СПОСОБ УПРАВЛЕНИЯ ПРИ ОСТАНОВКЕ ТУРБОМАШИННОЙ ТЕХНОЛОГИЧЕСКОЙ ЛИНИИ В УСТАНОВКЕ ДЛЯ СЖИЖЕНИЯ ГАЗООБРАЗНОГО ПРОДУКТА

Предложен способ управления при останове турбомашинной технологической линии (2), установленной в установке (8) для сжижения газообразного продукта, содержащей по меньшей мере две турбомашинные технологические линии (2, 2'). Предложенный способ включает следующие этапы: обнаружение останова первой турбомашинной технологической линии (2'), незамедлительное повышение приводящего крутящего момента на валу (3) второй турбомашинной технологической линии (2) при обнаружении останова, поддержание повышения приводящего крутящего момента на валу (3) второй турбомашинной технологической линии (2) до тех пор, пока не будет достигнута заданная скорость двигательного привода (6, 7) или не истечет заданный период времени. 4 н. и 10 з. п. ф-лы, 2 ил.

СПОСОБ И СИСТЕМА СЖИЖЕНИЯ

FIELD: heating. SUBSTANCE: supplied gas is liquefied using a closed refrigerating system in which flow (150) of cooled compressed gaseous cooling agent expands (136) to provide the first flow (154) of expanded gaseous cooling agent that is actually vapour and is used for cooling and liquefaction of flow (100) of supplied gas by means of indirect heat exchange (110). Flow (102) of supplied liquefied gas is preferably supercooled by indirect heat exchange (112) with the second flow (172) of expanded gaseous cooling agent that is actually vapour too and can be represented with flow (170) of cooled compressed gaseous cooling agent or some part of the first flow (152) of expanded gaseous cooling agent. Cooling capacity for flow (146) of compressed gaseous cooling agent is provided by part (16) of the first flow (152) of expanded gaseous cooling agent; with that, gaseous cooling agent (156) is partially heated by means of the above heat exchange (11) with supplied gas and/or the second flow (174) of expanded gaseous cooling agent, which is heated by means of the above supercooling (112). EFFECT: improving safety and reliability. 15 cl, 13 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 505 762 (13) C2 (51) МПК F25J 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011124891/06, 16.11.2009 (24) Дата начала отсчета срока действия патента: 16.11.2009 (72) Автор(ы): БРОСТОУ Адам Адриан (US), РОБЕРТС Марк Джулиан (US) (43) Дата публикации заявки: 27.12.2012 Бюл. № 36 2 5 0 5 7 6 2 (45) Опубликовано: 27.01.2014 Бюл. № 3 (56) Список документов, цитированных в отчете о поиске: US 2005/056051 А1, 17.03.2005. RU 2137066 C1, 10.09.1999. WO 2005071333 А1, 04.08.2005. RU 2141084 С1, 10.11.1999. US 3511058 А, 12.05.1970. 2 5 0 5 7 6 2 R U (86) Заявка PCT: IB 2009/007519 (16.11.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 20.06.2011 (87) Публикация заявки РСТ: WO 2010/058277 (27.05.2010) ...

СИСТЕМЫ ПРИВОДА С ПЕРЕМЕННОЙ СКОРОСТЬЮ, СПОСОБ УПРАВЛЕНИЯ СИСТЕМОЙ ПРИВОДА С ПЕРЕМЕННОЙ СКОРОСТЬЮ И СПОСОБ ОХЛАЖДЕНИЯ ПОТОКА УГЛЕВОДОРОДОВ

FIELD: electricity. SUBSTANCE: variable speed drive system using an electric motor and a frequency converter disposed between an AC power source and an electric motor. The frequency inverter operates in such a way as to convert the AC power received from the AC power source to the source frequency into a converted power supply with a variable drive frequency. The mechanical unit is connected to an electric motor. A scheme of electrical modulation, interacting with a frequency converter, is created. It is designed to excite oscillations of the interharmonic frequencies of the interharmonic currents generated in the frequency converter, independent of the excitation of torsional vibrations in the mechanical node and the AC power source. EFFECT: increasing the accuracy of vibration damping and simplification. 15 cl, 23 dwg, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 642 827 C2 (51) МПК H02P 9/00 (2006.01) H02P 23/04 (2006.01) H02J 3/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H02P 9/00 (2006.01); H02P 23/04 (2006.01); H02J 3/24 (2006.01) (21)(22) Заявка: 2015111522, 29.08.2013 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Дата регистрации: 29.01.2018 31.08.2012 EP 12182645.7 (43) Дата публикации заявки: 20.10.2016 Бюл. № 29 (45) Опубликовано: 29.01.2018 Бюл. № 4 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 31.03.2015 2295191 С1, 10.03.2007. GB 2437845 B, 17.08.2011. JP 201333533 A, 30.11.2001. US 2006232250 A1, 19.10.2006. US 7173399 B2, 06.02.2007. EP 2073374 A1, 24.06.2009. WO 2011121049 A1, 06.10.2011. CN 101164225 A, 16.04.2008. 2 6 4 2 8 2 7 (56) Список документов, цитированных в отчете о поиске: RU 2339144 C1, 20.11.2008. RU Приоритет(ы): (30) Конвенционный приоритет: R U 29.08.2013 (72) Автор(ы): ВЕРХЮЛСТ Михел Питер Альфонс (NL) EP 2013/067870 (29.08.2013) C 2 C 2 (86) Заявка PCT: (87) Публикация ...

СПОСОБ БЕСПЕРЕБОЙНОЙ РАБОТЫ УСТАНОВКИ СЖИЖЕНИЯ ГАЗА

... 1. Способ бесперебойной работы установки (1) сжижения газа, включающей в себя блок (2) энергоснабжения, блок (3) передачи, блок (4) холодильного компрессора и регулирующее устройство (5), причем блок (2) энергоснабжения имеет несколько турбоагрегатов (6), а блок (4) холодильного компрессора имеет, по меньшей мере, один холодильный компрессор (7) и присоединенный к холодильному компрессору (7) приводной электродвигатель (8) для электропривода холодильного компрессора (7) с номинальным расходом электроэнергии, блок (3) передачи подает полученную от блока (2) энергоснабжения мощность на блок (4) холодильного компрессора, а регулирующее устройство (5) соединяют с блоком (2) энергоснабжения и блоком (4) холодильного компрессора, и в нормальном режиме работы, за счет работы всех турбоагрегатов (6) под частичной или полной нагрузкой предоставляют необходимую для номинального потребления мощность, причем количество турбоагрегатов (6) превосходит минимальное количество, необходимое для обеспечения ...

СИСТЕМЫ ПРИВОДА С ПЕРЕМЕННОЙ СКОРОСТЬЮ, СПОСОБ УПРАВЛЕНИЯ СИСТЕМОЙ ПРИВОДА С ПЕРЕМЕННОЙ СКОРОСТЬЮ И СПОСОБ ОХЛАЖДЕНИЯ ПОТОКА УГЛЕВОДОРОДОВ

1. Способ управления системой привода с переменной скоростью, содержащей электрический двигатель и частотный преобразователь, расположенный между источником питания переменного тока и электрическим двигателем, включающий этапы, на которыхпреобразуют питание переменного тока, полученное из источника питания переменного тока с частотой источника, в преобразованное питание с переменной частотой привода, которая не равна указанной частоте источника, при этом преобразованное питание содержит интергармонические токи, имеющие дополнительные частотные компоненты на интергармонических частотах, которые не кратны частоте источника с коэффициентом, равным целому числу;подают в электрический двигатель преобразованное питание;приводят в движение электрическим двигателем механический узел, содержащий по меньшей мере приводной вал и механическую нагрузку;вызывают колебания интергармонических частот, независящие от возбуждения крутильных колебаний в механическом узле и источнике питания переменного тока.2. Способ по п. 1, в котором указанные колебания накладывают в соответствии с заданной конфигурацией колебаний.3. Способ по п. 1 или 2, в котором указанные колебания интергармонических частот вызывают путем многократного и периодического изменения интергармонических частот.4. Способ по п. 1, в котором колебания выбранной интергармонической частоты ограничивают в пределах максимального отклонения, составляющего от 3% до 15% от частоты выбранной интергармонической частоты в случае, когда указанные колебания отсутствуют.5. Способ по п. 1, в котором указанные колебания интергармонических частот вызывают путем изменения частоты РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H02P 23/04 (13) 2015 111 522 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015111522, 29.08.2013 (71) Заявитель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: 31.08.2012 EP 12182645.7 (85) Дата начала рассмотрения ...

СПОСОБ И СИСТЕМА СЖИЖЕНИЯ

... 1. Способ сжижения, использующий замкнутую холодильную систему, содержащий этапы, на которых(а) сжимают поток (144) газообразного хладагента в, по меньшей мере, одном компрессоре (132);(b) охлаждают, по меньшей мере, часть потока (146) сжатого газообразного хладагента в первом теплообменнике (114);(c) расширяют, по меньшей мере, первую часть (150) потока охлажденного сжатого газообразного хладагента из первого теплообменника (114) в первом расширителе (136) для получения первого потока (152) расширенного газообразного хладагента; и(d) охлаждают и, по существу, сжижают поток (100) подаваемого газа для образования, по существу, потока (102) сжиженного подаваемого газа во втором теплообменнике (110) посредством косвенного теплообмена с, по меньшей мере, первой частью (154) первого потока расширенного газообразного хладагента из первого расширителя (136),причем первый поток (152) расширенного газообразного хладагента, выходящий из первого расширителя (136), является, по существу, паром.2. Способ ...

СПОСОБ УПРАВЛЕНИЯ ПРИ ОСТАНОВКЕ ТУРБОМАШИННОЙ ТЕХНОЛОГИЧЕСКОЙ ЛИНИИ В УСТАНОВКЕ ДЛЯ СЖИЖЕНИЯ ГАЗООБРАЗНОГО ПРОДУКТА

ANLAGE ZUR ERDGASVERFLÜSSIGUNG

Method for liquefying hydrocarbon-rich flow, in particular flow of natural gas first and second refrigerant-mixture circuits for precooling hydrocarbon-rich flow and third refrigerant-mixture circuit for liquefying and supercooling flow

The method involves the first and the second refrigerant-mixture circuits (2a-2b,3a-3b) are for precooling the hydrocarbon-rich flow and the third refrigerant-mixture circuit (4a-4b) is for liquefying and supercooling the flow. Method for liquefying a hydrocarbon-rich flow, in particular a flow of natural gas involves the first and the second refrigerant-mixture circuits (2a-2b,3a-3b) are for precooling the hydrocarbon-rich flow and the third refrigerant-mixture circuit (4a-4b) is for liquefying and supercooling said flow., the hydrocarbon-rich flow being liquefied against a refrigerant-mixture circuit cascade consisting of three refrigerant-mixture circuits.

METHOD AND APPARATUS FOR THE TREATMENT OF LIQUEFIED NATURAL GAS

Method and apparatus for cooling and liquefying a hydrocarbon stream

System and method for producing a liquefied hydrocarbon stream and method of operating a compressor

Offshore plant for liquefying natural gas.

Plant (1) for liquefying natural gas comprising a main heat exchanger (10) in which the natural gas (5) is liquefied by means of indirect heat exchange with evaporating refrigerant, and a refrigerant circuit (20) in which evaporated refrigerant is compressed (23a, 23b) and liquefied to produce liquid refrigerant that is used in the main heat exchanger (10), wherein the refrigerant circuit (20) includes a compressor train (23a, 23b) consisting of at least one compressor (65a-67b) driven by an electric motor (83a, 83b).

Method of operating a compressor and a apparatus therefor

Offhore plant for liquefying natural gas

Method of operating a compressor and an apparatus thereof.

System and method for producing a liquefied hydrocarbon stream and method of operating a compressor

Offshore plant for liquefying natural gas.

Motor driven compressor system for natural gas liquefaction.

Combined cascade and multicomponent refrigerant intercooling

Offhore plant for liquefying natural gas

Offhore plant for liquefying natural gas

Method of operating a compressor and an apparatus thereof.

Method of operating a compressor and an apparatus thereof.

Liquefaction apparatus, methods, and systems

Aspects of the present disclosure relate to at-shore liquefaction of natural gas. One exemplary aspect includes an apparatus comprising: (i) an air-cooled electric refrigeration module ("AER Module") configured to input electricity and preprocessed feed gas from a source, convert the preprocessed feed gas into a liquefied natural gas ("LNG"), and output the LNG; and (ii) a plurality of LNG storage tanks configured to input the LNG from the AER Module and output the LNG to an LNG transport vessel. According to this aspect, the AER Module may be on an upper deck of a water-based apparatus, and the plurality of LNG tanks may be in a hull of the apparatus. Numerous additional exemplary aspects of the apparatus and related kits, methods, and systems are disclosed.

Method for liquefying natural gas with a triple closed circuit of coolant gas

The present invention relates to a method for liquefying a natural gas primarily including methane, in which said natural gas to be liquefied is liquefied by performing the following concomitant steps: (a) circulating said natural gas to be liquefied that is circulating in three heat exchangers which are mounted in series and in which the gas is cooled to T3, T3 being no higher than the liquefaction temperature of said natural gas at atmospheric pressure; (b) the closed-circuit circulation of at least: a first stream of coolant gas at a pressure P1 that is lower than P3, which is entering the third exchanger and leaving said first exchanger, said first stream being obtained by expanding, in a first expansion valve, a first portion of said second stream to P3, which is higher than P2, said second stream circulating parallel to said stream of natural gas while entering said first exchanger and leaving said second exchanger; and a third stream at a pressure P2 higher than P1 and lower than ...

Floating power generation system

System and method of carbon capture and sequestration

Controlling refrigerant compression power in a natural gas liquefaction process

The present invention relates to a method of controlling the production of a liquefied natural gas product stream (31) obtained by removing heat from natural gas by indirect heat exchange with an expanded heavy mixed refrigerant and an expanded light mixed refrigerant. The method comprises executing a control loop comprising maintaining the flow rate of the liquefied natural gas product stream (31) at a dependent set point and maintaining the flow rates of the heavy mixed refrigerant (60a) and the light mixed refrigerant (65) at operator manipulated set points (80, 81). The method further comprises executing an override control loop comprising: determining an override set point (95') for the flow rate of the liquefied natural gas and computing an override set point (80') for the flow rate of the heavy mixed refrigerant and an override set point (81') to reduce residual available power of the electric motor.

Nitrogen rejection system for liquefied natural gas

Plant for liquefying natural gas

SCALABLE CAPACITY LIQUEFIED NATURAL GAS PLANT

SYSTEM AND METHOD FOR POWER STORAGE AND RELEASE

Systems and methods for storing and releasing energy comprise directing inlet air into a vertical cold flue assembly, cooling the air and removing a portion of moisture. The air is directed out of the cold flue assembly and compressed. The remaining moisture is substantially removed. The air is cooled in a main heat exchanger such that it is substantially liquefied using refrigerant loop air. The substantially liquefied air is directed to a storage apparatus. In energy release mode, working loop air warms the released liquid air such that the released liquid air is substantially vaporized, and the released liquid air cools the working loop air such that the working loop air is substantially liquefied. The substantially vaporized air is directed to a combustion chamber and combusted with a fuel stream. A portion of expanded combustion gas may be used to heat and substantially vaporize the released liquid air.

COPRODUCTION OF LIQUEFIED NATURAL GAS AND ELECTRIC POWER WITH REFRIGERATION RECOVERY

Systems and methods for increasing the efficiency of liquefied natural gas (LNG) production, as well as facilitating coproduction of electric power, and compressed natural gas (CNG) are described. The systems and methods facilitate producing an intermediate LNG at a higher temperature, recovering refrigeration from flash gas and boil-off gas from the LNG, using flash-gas and boil-off gas as fuel to generate electric power, and providing LNG, CNG, and electric power to a vehicle fueling facility.

SYSTEM AND METHOD FOR THE PRODUCTION OF LIQUEFIED NATURAL GAS

A system and method for producing liquefied natural gas are provided. The method may include compressing a process stream containing natural gas in a compression assembly to produce a compressed process stream. The method may also include removing non-hydrocarbons from the compressed process stream in a separator, and cooling the compressed process stream with a cooling assembly to thereby produce a cooled, compressed process stream containing natural gas in a supercritical state. The method may further include expanding a first portion and a second portion of the natural gas from the cooled, compressed process stream in a first expansion element and a second expansion element to generate a first refrigeration stream and a second refrigeration stream, respectively. The method may further include cooling the natural gas in the cooled, compressed process stream to a supercritical state with the first and second refrigeration streams thereby produce the liquefied natural gas.

SYSTEM AND METHOD FOR LIQUID AIR PRODUCTION, POWER STORAGE AND POWER RELEASE

Systems and methods for storing and releasing energy comprising directing inlet air into a vertical cold flue assembly, a portion of moisture being removed from the air within the cold flue assembly. The air is directed out of the cold flue assembly and compressed. The remaining moisture is substantially removed and the carbon dioxide is removed from the air by adsorption. The air is cooled in a main heat exchanger such that it is substantially liquefied using refrigerant loop air. The substantially liquefied air is directed to a storage apparatus. The refrigerant loop air is cooled by a mechanical chiller and by a plurality of refrigerant loop air expanders. In energy release mode, working loop fluid warms the released liquid air such that the released liquid air is substantially vaporized, and the released liquid air cools the working loop fluid such that the working loop fluid is substantially liquefied. A portion of the released liquid air is directed to the at least one generator and ...

FLEXIBLE LIQUEFIED NATURAL GAS PLANT

The present techniques are directed to a flexible liquefied natural gas (LNG) plant that may be tied to an external electric grid for importing or exporting electric power. Exemplary embodiments provide a method for producing LNG that includes producing a base load capacity of refrigeration capacity for LNG production from a first compression system. Electricity may be produced from a second compressor string if electricity is needed by an external power grid, or a second amount of refrigeration capacity may be provided by the second compressor string is natural gas feed is available and the external grid does not need power.

ГИДРАВЛИЧЕСКИЙ СТАРТЕР С ДВУХКОНЦЕВОЙ ПЕРЕДАЧЕЙ

Предложены способ управления гидротрансформатором для запуска компрессора, а также цепочка ротационного высокомощного оборудования, содержащая гидротрансформатор (CSTC) (16) для запуска компрессора, а также скоростные передачи для изменения входной и выходной скорости таким образом, чтобы она соответствовала требованиям скорости и мощности по меньшей мере одного компрессора (4), находящегося в конце цепочки. Эта цепочка также включает в себя первичный двигатель (10), представленный либо электродвигателем, либо турбиной со стартером. CSTC приводится первичным двигателем, в котором с помощью понижающей передачи (18) скорость понижается до скорости, подходящей для эффективной передачи мощности, после чего наступает очередь повышающей передачи (20), служащей для увеличения выходной скорости CSTC, чтобы привести ее в соответствие с необходимыми требованиями высокоскоростного компрессора. Эти передачи могут быть представлены двумя отдельными блоками со своими кожухами, или же заключенными в один ...

METHOD OF GAS LIQUEFACTION AND DENITRATION NATURAL GAS, INSTALLATION FOR ITS REALIZATION AND GASES, OBTAINED AS A RESULT OF THIS SEPARATION

ГИДРАВЛИЧЕСКИЙ СТАРТЕР С ДВУХКОНЦЕВОЙ ПЕРЕДАЧЕЙ

Предложены способ управления гидротрансформатором для запуска компрессора, а также цепочка ротационного высокомощного оборудования, содержащая гидротрансформатор (CSTC) (16) для запуска компрессора, а также скоростные передачи для изменения входной и выходной скорости таким образом, чтобы она соответствовала требованиям скорости и мощности по меньшей мере одного компрессора (4), находящегося в конце цепочки. Эта цепочка также включает в себя первичный двигатель (10), представленный либо электродвигателем, либо турбиной со стартером. CSTC приводится первичным двигателем, в котором с помощью понижающей передачи (18) скорость понижается до скорости, подходящей для эффективной передачи мощности, после чего наступает очередь повышающей передачи (20), служащей для увеличения выходной скорости CSTC, чтобы привести ее в соответствие с необходимыми требованиями высокоскоростного компрессора. Эти передачи могут быть представлены двумя отдельными блоками со своими кожухами или же заключенными в один ...

DEVICE FOR LIQUEFYING NATURAL GAS

СПОСОБ СЖИЖЕНИЯ И ДЕАЗОТАЦИИ ПРИРОДНОГО ГАЗА И ГАЗЫ, ПОЛУЧЕННЫЕ В РЕЗУЛЬТАТЕ ЭТОГО РАЗДЕЛЕНИЯ

Изобретение относится к способу сжижения и деазотации природного газа (1), содержащего азот, согласно которому упомянутый газ охлаждают, сжижают и разделяют на первую головную фракцию (9), относительно более летучую и обогащенную азотом, и на первую донную фракцию (15). Способ отличается тем, что первую головную фракцию (9) охлаждают и сжижают, разделяют на вторую, относительно более летучую головную фракцию (11), которая производит газообразный азот (29), и на вторую донную фракцию (12), которая подвергается снова обработке, и тем, что первую донную фракцию (15) охлаждают для того, чтобы произвести сжиженный природный газ, по существу, очищенный от азота (24). Описаны также другие варианты выполнения.

PROCESS OF LIQUEFACTION PARTIAL Of a FLUID CONTAINING OF HYDROCARBONS TELQUE OF Natural gas

Scalable capacity liquefied natural gas plant

COMPRESSION TRAIN INCLUDING ONE CENTRIFUGAL COMPRESSOR AND LNG PLANT

The present invention relates to a compression train for a natural gas liquefaction process. The compression train includes a driving machine and only one centrifugal compressor rotated and driven by the driving machine. The compressor is configured to compress a refrigerant gas with a molecular weight of less than 30 g/mol from suction pressure to discharge pressure. A ratio between the discharge pressure and the suction pressure is greater than 10, preferably greater than 12, and more preferably greater than 15. An LNG plant includes one or more compression trains according to the present invention. Accordingly, the present invention can obtain a higher LNG yield in a smaller space and/or a smaller occupied area. COPYRIGHT KIPO 2018 ...

Processo e aparelho para a liquefação de gás natural

HYDROCARBON LIQUEFACTION SYSTEM AND METHOD

A floating offshore cryogenic hydrocarbon (such as LNG) export system (1) comprising one onshore (existing) gas/ oil treatment plant (3) for pretreatment of the natural (stranded or associated) gas, coming (12,13) from a near shore gas and/or oil field, a pipeline (14) connected on one side to the onshore plant (3) and on the other side to an offshore liquefaction system (2) for supplying pressurized pretreated gas from the plant to the liquefaction system, which system comprises at least one liquefaction unit (7) for the liquefaction of pretreated gas and LNG storing capacities (9) .

CONTROL METHOD FOR MIXED REFRIGERANT BASED NATURAL GAS LIQUEFIER

In a natural gas liquefaction system having a refrigerant storage circuit (10), a refrigerant circulation circuit (20) in fluid communication with the refrigerant storage circuit (10), and a natural gas liquefacation circuit (30) in thermal communication with the refrigerant circulation circuit (20), a method for liquefaction of natural gas in which pressure in the refrigerant circulation circuit (20) is adjusted to below about 12 bar G (175 psig) by exchange of refrigerant with the refrigerant storage circuit (10). A variable speed motor (25) is started whereby operation of a compressor (21) is initiated. The compressor (21) is operated at full discharge capacity. Operation of an expansion valve (56) is initiated whereby suction pressure at the suction pressure port of the compressor (21) is maintained below about 2 bar G (30 psig) and discharge pressure at the discharge pressure port of the compressor (21) is maintained below about 24 bar G (350 psig). Refrigerant vapor is introduced ...

Method of operating a compressor and system and method for producing a liquefied hydrocarbon stream

At least part of a fluid (210,110) is compressed in a compressor (120,220) driven by an electric motor (130,230). The compressor has variable inlet guide vanes of which an angle can be adjusted. The electric motor is powered using a power supply network (400), and a signal representative of a condition of the power supply network is monitored. From the signal, it is automatically determined whether additional load shedding is needed, by comparing the signal to a predetermined criterion. The variable inlet guide vanes angle is automatically adjusted when the criterion is satisfied and additional load shedding is needed. This automatically reduces the loading of the compressor. The compressor and the method of operating it may be employed as part of a system for producing a liquefied hydrocarbon stream (90) and/or in the course of producing a liquefied hydrocarbon stream (90), in which case the compressor can be a refrigerant compressor and the fluid a refrigerant fluid.

METHOD OF COOLING AND LIQUEFYING METHANE-RICH GAS FLOW

Reliquefaction of compressed vapour

Water combustion technology-methods,processes,systems and apparatus for the combustion of hydrogen and oxygen

METHOD FOR THE CONTROLLING OF A WITH OF MIXED COOLANT WORKING NATURAL GAS CONDENSOR

BACK LIQUEFACTION OF CONSOLIDATED STEAM

MOTOR DRIVEN COMPRESSOR SYSTEM FOR NATURAL GAS LIQUEFACTION

System and method for liquid air production, power storage and power release

Systems and methods for storing and releasing energy comprising directing inlet air into a vertical cold flue assembly, a portion of moisture being removed from the air within the cold flue assembly. The air is directed out of the cold flue assembly and compressed. The remaining moisture is substantially removed and the carbon dioxide is removed from the air by adsorption. The air is cooled in a main heat exchanger such that it is substantially liquefied using refrigerant loop air. The substantially liquefied air is directed to a storage apparatus. The refrigerant loop air is cooled by a mechanical chiller and by a plurality of refrigerant loop air expanders. In energy release mode, working loop fluid warms the released liquid air such that the released liquid air is substantially vaporized, and the released liquid air cools the working loop fluid such that the working loop fluid is substantially liquefied. A portion of the released liquid air is directed to the at least one generator and ...

Method for handling the shutdown of a turbomachine string in a liquefaction plant of a gaseous product

A method for handling the shutdown of a turbomachine string (2) installed in a plant (8) for the liquefaction of a gaseous product comprising at least two turbomachine strings (2, 2') comprises the steps of detecting the shutdown of a first turbomachine string (2'); promptly increasing the driving torque on a shaft (3) of a second turbomachine string (2) when the shutdown is detected; maintaining the driving torque increase on the shaft (3) of the second turbomachine string (2) until a preset speed of the motor driver (6, 7) is reached or a predetermined period of time expires.

Low pressure ethane liquefaction and purification from a high pressure liquid ethane source

A plant and process are used to liquefy and purify a high pressure ethane feed stream. The plant includes a cascaded refrigeration system that refrigerates the ethane feed stream. The refrigeration system includes a propylene circuit, an ethylene circuit and a mixed refrigerant circuit. The mixed refrigerant circuit includes a refrigerant that includes ethane and methane. The plant includes a demethanizer that is configured to remove methane and other natural gas liquids from the refrigerated ethane stream.

Low pressure ethane liquefaction and purification from a high pressure liquid ethane source

A plant and process are used to liquefy and purify a high pressure ethane feed stream. The plant includes a cascaded refrigeration system that refrigerates the ethane feed stream. The refrigeration system includes a propylene circuit, an ethylene circuit and a mixed refrigerant circuit. The mixed refrigerant circuit includes a refrigerant that includes ethane and methane. The plant includes a demethanizer that is configured to remove methane and other natural gas liquids from the refrigerated ethane stream.

Method and system for the small-scale production of liquified natural gas (LNG) from low-pressure gas

A system for the production of LNG from low-pressure feed gas sources, at small production scales and at lower energy input costs. A system for the small-scale production of cold compressed natural gas (CCNG). A method of dispensing natural gas from stored CCNG, comprising: dispensing CCNG from a CCNG storage tank; pumping the CCNG by a cryogenic liquid pump to a pressure suitable for compressed natural gas dispensing and storage in on vehicle compressed natural gas storage tanks; recovering cold from the CCNG by heat exchange with natural gas feeding the natural gas production plant to replace dispensed product. A system for the storage, transport, and dispensing of natural gas, comprising: means for handling natural gas in a CCNG state where the natural gas is a non-liquid, but is dense-enough to allow for pumping to pressure by a cryogenic liquid pump. C:2a :\C17 cIcx -'- 4 0 c C-4~e O ccswW0 3MIS- Oj Ifl~qX ~O 3 ...

Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition

... - 45 A B S T R A C T METHOD AND APPARATUS FOR REMOVING NITROGEN FROM A CRYOGENIC HYDROCARBON COMPOSITION Nitrogen is removed from a cryogenic hydrocarbon 5 composition comprising nitrogen and a methane-containing liquid phase. A by-product vapour from the cryogenic hydrocarbon composition, at a low pressure of between 1 and 2 bar absolute, is compressed to a separation pressure in the range of between 2 and 15 bar absolute. 10 The such compressed vapour is partially liquefied by heat exchanging the compressed vapour against an auxiliary refrigerant stream and thereby passing heat from the compressed vapour to the auxiliary refrigerant stream at a cooling duty. The condensed fraction of the partially 15 liquefied compressed vapour is depressurized and at least a portion of it is reinjected into the cryogenic hydrocarbon composition. An off gas consisting of a, non condensed, vapour fraction of the partially liquefied compressed vapour is discharged from the first gas/liquid 20 separator.

SYSTEM AND METHOD FOR LIQUEFIED NATURAL GAS PRODUCTION

A system and method for producing liquefied natural gas from a natural gas source is provided. The method may include feeding natural gas provided by the natural gas source to a liquefaction module. The method may also include flowing the natural gas through a product stream of the liquefaction module. The method may further include flowing a process fluid through a liquefaction stream of the liquefaction module to cool at least a portion of the natural gas flowing through the product stream to produce the liquefied natural gas.

PRE-COOLED LIQUEFACTION PROCESS

A system and method for liquefying a natural gas stream, the method including the steps of providing a dehydrated natural gas stream for liquefaction, pre-cooling the dehydrated natural gas stream in a pre-cooling apparatus, where the pre-cooling is performed by using a pre-coolant that consists essentially of a hydroflorocarbon (HFC) refrigerant, further cooling the pre-cooled dehydrated natural gas stream in a main heat exchanger through indirect heat exchange against a vaporized hydrocarbon mixed refrigerant coolant to produce a liquefied natural gas product stream, where the mixed refrigerant coolant comprises ethane, methane, nitrogen, and less than or equal to 3 mol % of propane.

SYSTEM AND METHOD FOR POWER STORAGE AND RELEASE

Systems and methods for storing and releasing energy comprise directing inlet air into a vertical cold flue assembly, cooling the air and removing a portion of moisture. The air is directed out of the cold flue assembly and compressed. The remaining moisture is substantially removed. The air is cooled in a main heat exchanger such that it is substantially liquefied using refrigerant loop air. The substantially liquefied air is directed to a storage apparatus. In energy release mode, working loop air warms the released liquid air such that the released liquid air is substantially vaporized, and the released liquid air cools the working loop air such that the working loop air is substantially liquefied. The substantially vaporized air is directed to a combustion chamber and combusted with a fuel stream. A portion of expanded combustion gas may be used to heat and substantially vaporize the released liquid air.

DUAL END GEAR FLUID DRIVE STARTER

INTEGRALLY-GEARED COMPRESSORS FOR PRECOOLING IN LNG APPLICATIONS

A natural gas liquefaction system is disclosed, which comprises at least a pre-cooling loop (103), through which a first refrigerant is adapted to circulate. The pre-cooling loop comprises at least one compressor (109) for pressurizing the first refrigerant; at least one prime mover (111) for driving the compressor (109); at least one condenser (115) for removing heat from the first refrigerant; at least a first expansion element (119A-119D) for expanding the first refrigerant; at least a first heat exchanger (123A-123D) for transferring heat from natural gas to the first refrigerant. The system further comprises at least a cooling loop (105), downstream of the pre-cooling loop, where through a second refrigerant circulates. The natural gas is adapted to be sequentially cooled in the pre-cooling loop and in the cooling loop. The compressor of the pre-cooling loop is an integrally-geared turbo-compressor comprising a plurality of compressor stages (109A-109D).

METHOD AND APPARATUS FOR REMOVING NITROGEN FROM A CRYOGENIC HYDROCARBON COMPOSITION

Nitrogen is removed from a cryogenic hydrocarbon composition. A least a first portion of the cryogenic hydrocarbon composition is fed to a nitrogen stripper column as a first nitrogen stripper feed stream. A nitrogen-stripped liquid is drawn from the nitrogen stripper column. A liquid hydrocarbon product stream and a process vapour are produced comprising at least a step of depressurizing the nitrogen-stripped liquid to a flash pressure. The process vapour is compressed, and selectively split into a stripping portion and a non-stripping portion. A stripping vapour stream comprising at least the stripping portion is passed into the nitrogen stripper column. A vapour fraction is discharged as off gas, comprising a discharge fraction of overhead vapour from the nitrogen stripper column and comprising at least the bypass portion from the non-stripping portion of the compressed vapour, which bypasses a stripping section positioned in the nitrogen stripper column.

REFRIGERATION SYSTEM

A refrigeration system using air as the refrigerant comprises a compressor which compresses air to 84 bar g. The compressed air is cooled first by cooling water and then by returning air in a plate-fin heat exchanger before being expanded to 59 bar g in an expander. The expanded air at -61.degree.C is passed through indirect cooling coils in a cold store which it leaves at -45.degree.C. This air is then passed through the plate-fin heat exchanger before being recycled to the compressor. The refrigeration delivered is about 1.05kw refrigeration/kw power input.

ПРИВОДИМАЯ ДВИГАТЕЛЕМ КОМПРЕССОРНАЯ СИСТЕМА ДЛЯ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА

Система сжижения природного газа, использующая электроприводы для привода компрессоров. Комплекс электродвигателей и паровых турбин может снабжаться энергией от когенерационной установки и применяться в качестве приводов.

УСТАНОВКА ДЛЯ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА

... 1. Установка для сжижения природного газа, включающая один предварительный теплообменник (2) с впускным отверстием (13) для природного газа и выпускным отверстием (14) для охлажденного газа, распределитель (4) с впускным отверстием (18), сообщенным с выпускным отверстием (14) для охлажденного газа, и имеющий, по меньшей мере, два выпускных отверстия (22, 23), и, по меньшей мере, два основных теплообменника (5, 5'), каждый из которых включает первую теплую секцию (25, 25') с одним впускным отверстием (26, 26'), сообщенным с соответствующим выпускным отверстием (22, 23) распределителя (4), и с выпускным отверстием (28, 28') для сжиженного природного газа, и кроме того, установка включает предварительный холодильный контур (3) для отвода тепла от природного газа в предварительном теплообменнике (2) и, по меньшей мере, два основных холодильных контура (9, 9') для отвода тепла от природного газа, проходящего через первую теплую секцию (25, 25') соответствующего основного теплообменника (5, 5 ...

All electric LNG system and process

Method for the uninterrupted operation of a gas liquefaction system

The invention relates to a method for the uninterrupted operation of a gas liquefaction system (1), wherein the operation is continuously monitored for at least those users of the refrigerant compressor component (4) which represent a two-digit percentage of the total load on the refrigerant compressor component (4). A total instantaneously available negative load reserve is calculated, and at least one predetermined turbine (10) is switched off when the load reserve reachable via a frequency regulation of the one or more refrigerant compressors (7) is lower than the energy demand of the largest of the refrigerant compressors (7) and either a refrigerant compressor (7) fails or a speed of frequency change (df/dt) for the power supply network for the gas liquefaction system (1) exceeds a preset threshold (121).

DEVICE AND CRYOGENIC PROCESS OF REFRIGERATION

DEVICE AND CRYOGENIC PROCESS OF REFRIGERATION

Dispositif de réfrigération cryogénique destiné à transférer de la chaleur d'une source froide (15) vers une source (1) chaude via un fluide de travail circulant dans un circuit (200) de travail fermé comprenant en série : une portion de compression sensiblement isotherme du fluide, une portion de refroidissement sensiblement isobare du fluide, une portion de détente sensiblement isotherme du fluide et une portion de réchauffement sensiblement isobare du fluide, la portion de compression du circuit (200) de travail comprenant au moins deux compresseurs (7, 5, 3) disposés en série, la portion de détente du circuit (200) de travail comprenant au moins une turbine (9, 11, 13) de détente, les compresseurs (7, 5, 3) et la ou les turbines (9, 11, 13) de détente étant entraînés par au moins un moteur (70) dit à haute vitesse comprenant un arbre de sortie dont l'une des extrémité porte et entraîne en rotation par accouplement direct un premier compresseur (7, 5, 3) et dont l'autre extrémité porte et entraîne en rotation par accouplement direct un second compresseur (7, 5, 3) ou une turbine (9, 11, 13) de détente

PROCESS OF LIQUEFACTION AND NATURAL GAS DEAZOTATION, INSTALLATION OF IMPLEMENTATION, AND GASES OBTAINED BY THIS SEPARATION

Procédé de liquéfaction et de déazotation de gaz naturel, installation de mise en oeuvre, et gaz obtenus par cette séparation. L'invention concerne un procédé de liquéfaction et de déazotation de gaz naturel (1) contenant de l'azote, dans lequel ledit gaz naturel (1) est refroidi, liquéfié et séparé en une première fraction de tête (9) relativement plus volatile enrichie en azote, et en une première fraction de pied (15).Le procédé est caractérisé en ce que la première fraction de tête (9) est refroidie et liquéfiée, séparée en une deuxième fraction de tête (11) relativement plus volatile qui fournit de l'azote gazeux (29), et en une deuxième fraction de pied (12) qui est retraitée, et en ce que la première fraction de pied (15) est refroidie pour fournir du gaz naturel liquéfié essentiellement exempt d'azote (24). D'autres modes de réalisation sont décrits. Process for liquefying and denitrogenation of natural gas, installation for using it, and gases obtained by this separation. The invention relates to a process for the liquefaction and denitrogenation of natural gas (1) containing nitrogen, in which said natural gas (1) is cooled, liquefied and separated into a relatively more volatile enriched first overhead (9). nitrogen, and a first bottom fraction (15). The process is characterized in that the first top fraction (9) is cooled and liquefied, separated into a second relatively more volatile top fraction (11) which provides nitrogen gas (29), and a second bottoms fraction (12) which is reprocessed, and in that the first bottoms fraction (15) is cooled to provide liquefied natural gas essentially free of nitrogen (24) . Other embodiments are described.

향상된 천연 가스 제조를 위한 초전도 시스템

... 천연 가스의 액화 또는 재기화를 위한 천연 가스 처리 시설이 제공된다. 시설은 적어도 액화 온도로 천연 가스를 가온하거나 냉각하기 위한 1차 처리 유닛, 예를 들어 냉동 유닛을 포함한다. 시설은 시설 내에 통합된 초전도성 전기 부품을 또한 갖는다. 초전도성 전기 부품은 통상의 전기 부품의 사용을 통해 경험될 수 있는 것에 비해 적어도 1 퍼센트만큼 시설의 전기 효율을 향상시키기 위해 초전도성 재료를 구비한다. 초전도성 전기 부품은 하나 이상의 모터, 하나 이상의 발전기, 하나 이상의 변압기, 개폐기, 하나 이상의 송전 전도체, 가변 속도 드라이브 또는 그 조합들일 수 있다.

Cryogenic Refrigeration Method And Device

The invention relates to a cryogenic refrigeration device intended to transfer heat from a cold source to a hot source via a working fluid flowing through a closed working circuit including the following portions in series, namely: a portion for the substantially isothermal compression of the fluid, a portion for the substantially isobaric cooling of the fluid, a portion for the substantially isothermal expansion of the fluid, and a portion for the substantially isobaric heating of the fluid. The compression portion of the working circuit includes at least two compressors disposed in series and the expansion portion of the working circuit includes at least one expansion turbine, said compressors and expansion turbine(s) being driven by at least one high-speed motor including an output shaft. One end of the output shaft supports and rotates, by means of direct coupling, a first compressor, while the other end of the output shaft supports and rotates, by means of direct coupling, a second ...

System and method for liquid air production, power storage and power release

Systems and methods for releasing and replacing stored energy comprise capturing inlet air from the ambient environment so the inlet air flows in a first general direction. Released liquid air flows in a second general direction, the second general direction being substantially opposite to the first general direction. The released liquid air is pumped to pressure, and the released liquid air and inlet air flow past each other such that heat exchange occurs. The inlet air warms the released liquid air such that the released liquid air is substantially vaporized, and the released liquid air cools the inlet air. Moisture and carbon dioxide are removed from the inlet air, and the inlet air is compressed and cooled such that the inlet air is substantially liquefied. The substantially liquefied air replaces a portion of the released liquid air; and the substantially vaporized released liquid air is combusted with fuel to produce electricity.

System and method for liquid air production, power storage and power release

Systems and methods for storing and releasing energy comprising directing inlet air into a vertical cold flue assembly, a portion of moisture being removed from the air within the cold flue assembly. The air is directed out of the cold flue assembly and compressed. The remaining moisture is substantially removed and the carbon dioxide is removed from the air by adsorption. The air is cooled in a main heat exchanger such that it is substantially liquefied using refrigerant loop air. The substantially liquefied air is directed to a storage apparatus. The refrigerant loop air is cooled by a mechanical chiller and by a plurality of refrigerant loop air expanders. In energy release mode, working loop fluid warms the released liquid air such that the released liquid air is substantially vaporized, and the released liquid air cools the working loop fluid such that the working loop fluid is substantially liquefied. A portion of the released liquid air is directed to the at least one generator and ...

Plant and process for liquefying natural gas

The invention relates to a novel plant and process for producing liquefied natural gas. The plant of the invention is of the type that comprises one natural gas pre-cooling heat exchanger (2) having an inlet (13) for natural gas and an outlet (14) for cooled natural gas, optionally a distributor (4) having an inlet (18) connected to the outlet for cooled natural gas and having one or more outlets (22,23), and one or more main heat exchangers (5,5') each comprising a first hot side (25,25') having one inlet (26,26') connected to one outlet (22,23) of the distributor (4) and an outlet (95,95') for liquefied natural gas, which plant further comprises a pre-cooling refrigerant circuit (3) for removing heat from the natural gas in the natural gas pre-cooling heat exchanger (15), and one or more main refrigerant circuits (43,43') for removing heat from natural gas flowing through the first hot side of the corresponding main heat exchanger. The invention is based on the use of separate pre-cooling ...

OFF-SHORE STRUCTURE COMPRISING TWO POWER SYSTEMS AND METHOD OF POWERING THE SAME

PRETREATMENT AND PRE-COOLING OF NATURAL GAS BY HIGH PRESSURE COMPRESSION AND EXPANSION

СПОСОБ ПРОИЗВОДСТВА ЖИДКОГО ВОДОРОДА И ЭЛЕКТРОЭНЕРГИИ

Настоящее изобретение относится к способу производства жидкого водорода и электроэнергии. Способ производства водорода и/или электроэнергии включает создание системы, подходящей для производства водорода и/или электроэнергии, содержащей, по меньшей мере, устройство реформинга, приспособленное для приема сырьевого природного газа и реформинга природного газа с получением водородсодержащего газа; устройство для производства электроэнергии, приспособленное для приема, по меньшей мере, части водорода, содержащегося в водородсодержащем газе, и осуществления реформинга водорода для производства электроэнергии; и устройство для сжижения водорода, приспособленное для приема части водорода, содержащегося в водородсодержащем газе, и для сжижения водорода с получением жидкого водорода, при этом во время работы в устройство для сжижения водорода подают по меньшей мере часть электроэнергии, произведенной в устройстве для выработки электроэнергии, и во время работы из системы отводят жидкий водород и ...

СПОСОБ БЕСПЕРЕБОЙНОЙ РАБОТЫ УСТАНОВКИ СЖИЖЕНИЯ ГАЗА

Изобретение относится к способу бесперебойной работы установки сжижения газа. Непрерывно контролируется режим работы, по меньшей мере, тех потребителей электроэнергии блока холодильного компрессора, которые представляют собой второстепенную процентную долю в общей нагрузке блока холодильного компрессора. Рассчитывается весь имеющийся в данный момент времени отрицательный резерв по нагрузке, и, по меньшей мере, одна предварительно заданная турбина отключается, если получаемый посредством регулировки частоты холодильного компрессора или холодильных компрессоров отрицательный резерв по нагрузке меньше, чем потребность в энергии самого большого из холодильных компрессоров, и либо выходит из строя холодильный компрессор, либо скорость изменения частоты (df/dt) в сети энергообеспечения установки сжижения газа превышает определенное заранее предельное значение. Использование изобретения позволит увеличить период бесперебойной работы установки сжижения газа. 3 з.п. ф-лы, 8 ил.

УСТАНОВКА И СПОСОБ ДЛЯ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА

FIELD: power industry. SUBSTANCE: plant includes row (1) of in-series installed heat exchangers of preliminary cooling with one cooling agent circulation circuit, which has inlet (13) for natural gas and outlet (14) for preliminary cooled natural gas, and distributor (4). Row of heat exchangers of preliminary cooling and distributor are arranged with possibility of obtaining at least the first and the second pre-cooled natural gas sub-flows. Besides the plant includes two units for removal of liquid fractions from natural gas, which have inlet, outlet for heavy fraction and outlet for light fraction removed from the top of the column, as well as two main heat exchangers (5, 5) intended for cooling with liquefaction of light fraction removed from the top of the column of the appropriate unit for removal of liquids from natural gas. EFFECT: providing liquefied gas meeting various process requirements. 10 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 395 765 (13) C2 (51) МПК F25J 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2007130261/06, 15.02.2006 (24) Дата начала отсчета срока действия патента: 15.02.2006 (72) Автор(ы): БЁЙС Корнелис (NL), КЛЕЙН НАГЕЛВОРТ Роберт (NL) (43) Дата публикации заявки: 20.02.2009 2 3 9 5 7 6 5 (45) Опубликовано: 27.07.2010 Бюл. № 21 2 3 9 5 7 6 5 (85) Дата перевода заявки PCT на национальную фазу: 07.08.2007 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: US 2005005635 A1, 13.01.2005. VEGA DE LA F F et al, LNG plant reliability analysis, Meeting, Paper at cryogenic gas processing, no. 69B, 25.02.1996, c.1-20. EP 1092932 A1, 18.04.2001. US 2003154739 A1, 21.03.2003. US 6389844 B1, 21.05.2002. RU 2194930 C2, 20.12.2002. (86) Заявка PCT: EP 2006/050937 (15.02.2006) (87) Публикация PCT: WO 2006/087330 (24.08.2006) Адрес для переписки: 103735, Москва, ул. Ильинка, 5/2, ООО "Союзпатент", пат.пов. С.Б.Фелицыной, рег.№ 303 R U ...

СИСТЕМА И СПОСОБ ДЛЯ ПРОИЗВОДСТВА ПОТОКА СЖИЖЕННЫХ УГЛЕВОДОРОДОВ И СПОСОБ РАБОТЫ КОМПРЕССОРА

FIELD: engines and pumps. SUBSTANCE: at least part of the fluid medium is compressed in the compressor driven by an electric motor. The compressor includes adjustable inlet guide vanes, the rotation angle of which can be adjusted. The electric motor is supplied with electric power from the mains, and the signal indicating the mains state is controlled. The necessity of additional load reduction is determined automatically by this signal by means of comparing the received signal with a predetermined criterion. The adjustable inlet guide vanes are automatically adjusted when the predetermined criterion is met and the additional load reduction is necessary. The compressor and the method of its operation may be used as part of a system for producing the liquefied hydrocarbons flow and / or during the production of liquefied hydrocarbon flow. The compressor may be a refrigerant one, and the fluid medium may be a refrigerant. EFFECT: decreasing the compressor load. 19 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 621 591 C2 (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2014128901, 13.12.2012 (24) Дата начала отсчета срока действия патента: 13.12.2012 (72) Автор(ы): ВАН АКЕН Михил Гейсберт (NL) (73) Патентообладатель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: US 2010257895 A1, 14.10.2010. WO Приоритет(ы): (30) Конвенционный приоритет: R U 06.06.2017 2008086957 A2, 24.07.2008. WO 2011058129 A1, 19.05.2011. RU 2344359 C1, 20.01.2009. 15.12.2011 EP 11193688.6 (45) Опубликовано: 06.06.2017 Бюл. № 16 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.07.2014 (86) Заявка PCT: EP 2012/075314 (13.12.2012) (87) Публикация заявки PCT: 2 6 2 1 5 9 1 (43) Дата публикации заявки: 10.02.2016 Бюл. № 4 2 6 2 1 5 9 1 R U C 2 C 2 WO 2013/087740 (20.06.2013) Адрес для переписки: 109012, ...

УСТАНОВКА И СПОСОБ ДЛЯ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА

FIELD: power industry. SUBSTANCE: plant (10) for liquefaction of natural gas includes at least row (1) of in-series installed heat exchangers of preliminary cooling, which includes end heat exchanger (2a) for cooling flow (90) of natural gas, distributor (4) arranged upstream end heat exchanger, which is intended for separation of flow (90) of natural gas into the first and the second sub-flows of natural gas, the first and the second cryogenic systems (200, 200'). Each of systems (200, 200') includes the main heat exchanger having the first hot side with one inlet made for receipt of the first and the second natural gas sub-flows respectively, and outlet for liquefied natural gas, and circulation circuit of the main cooling agent for heat removal from natural gas flowing through the first hot side of the appropriate main heat exchanger. Heat exchangers of the row of in-series connected heat exchangers for preliminary cooling are the part of one and the same cooling agent circulation circuit. EFFECT: simplifying the gas liquefaction plant and providing alternative plant allowing to meet various process requirements for liquefied natural gas. 12 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 395 764 (13) C2 (51) МПК F25J 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2007130260/06, 15.02.2006 (24) Дата начала отсчета срока действия патента: 15.02.2006 (73) Патентообладатель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) (43) Дата публикации заявки: 20.02.2009 2 3 9 5 7 6 4 (45) Опубликовано: 27.07.2010 Бюл. № 21 2 3 9 5 7 6 4 R U (85) Дата перевода заявки PCT на национальную фазу: 07.08.2007 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: VEGA DE LA F F et al, LNG plant reliability analysis, Meeting, Paper at cryogenic gas processing, no. 69B, 25.02.1996, с.1-20. EP 1092932 A1, 18.04.2001. US 2003154739 A1, 21.03.2003. US 2005005635 A1, 13. ...

СТАНЦИЯ ДЛЯ СНИЖЕНИЯ ДАВЛЕНИЯ И СЖИЖЕНИЯ ГАЗА

FIELD: oil and gas industry.SUBSTANCE: invention relates to the treatment of natural gases. In the method, the station for reducing gas pressure and for liquefying natural gas contains expansion turbine (12), a means for recovering mechanical work produced in the process of gas pressure reduction, a cooling system containing compression means (C1, C2, C3), condensation means (14) for liquefying gas, equipped with branch pipe (09) downstream of expansion turbine (12), device for heat recovery (Q) produced by compression means (C1, C2, C3; C) of cooling systems that are connected to devices (10; 40; 110) for heating the gas upstream of expansion turbine (12). Said cooling system contains compressors and/or expanders with radial gas flow.EFFECT: utilization of the energy of gas expansion and the prevention of ice formation inside the pipes of the stations.9 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 680 285 C2 (51) МПК F25J 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/0022 (2018.08); F25J 1/0035 (2018.08); F25J 1/005 (2018.08); F25J 1/0052 (2018.08); F25J 1/0072 (2018.08); F25J 1/0072 (2018.08); F25J 1/0204 (2018.08); F25J 1/0212 (2018.08); F25J 1/0232 (2018.08); F25J 1/0242 (2018.08); F25J 1/0265 (2018.08); F25J 1/0281 (2018.08); F25J 1/0284 (2018.08); F25J 1/0285 (2018.08); F25J 1/0288 (2018.08); F25J 1/0296 (2018.08) 2015139854, 20.02.2014 (24) Дата начала отсчета срока действия патента: 20.02.2014 (72) Автор(ы): ПАЖ Гийом (FR), МАРКУЧЧИЛИ Фредерик (FR) 19.02.2019 (56) Список документов, цитированных в отчете о поиске: US 3608323 A, 28.09.1971. US Приоритет(ы): (30) Конвенционный приоритет: 20.02.2013 FR 13 00380 (43) Дата публикации заявки: 30.03.2017 Бюл. № 10 3608323 A, 28.09.1971. EP 1892457 A1, 27.02.2008. WO 2010036121 A2, 01.04.2010. RU 2137067 C1, 10.09.1999. RU 2002176 С1, 30.10.1993. 2 6 8 0 2 8 5 (73) Патентообладатель(и): КРИОСТАР САС (FR) Дата регистрации: R U (21)(22) ...

УПРАВЛЕНИЕ МОЩНОСТЬЮ КОМПРИМИРОВАНИЯ ХЛАДАГЕНТА В ПРОЦЕССЕ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 124 740 A (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018124740, 06.12.2016 (71) Заявитель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: 08.12.2015 IN 6543/CHE/2015; 19.01.2016 EP 16151934.3 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 09.07.2018 EP 2016/079893 (06.12.2016) (87) Публикация заявки PCT: WO 2017/097764 (15.06.2017) A Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент" R U (57) Формула изобретения 1. Способ управления производством потока (31) продукта сжиженного природного газа, получаемого путем отбора тепла от природного газа в основном теплообменнике (2), в котором природный газ находится в состоянии непрямого теплового обмена с расширенным тяжелым смешанным хладагентом и расширенным легким смешанным хладагентом, при этом способ включает в себя циркуляцию тяжелого и легкого смешанных хладагентов посредством холодильного цикла, причем холодильный цикл включает в себя центробежный компрессор (15), приводимый в действие электрическим двигателем (16), при этом, что способ включает в себя выполнение контура управления, который включает в себя: а) определение зависимого установочного значения (95) для скорости потока (31) продукта сжиженного природного газа на основе заданных оператором установочных значений для: (i) скорости потока одного из хладагентов (тяжелого смешанного хладагента (80), легкого смешанного хладагента (81), или всего смешанного хладагента), (ii) отношения скорости потока тяжелого смешанного хладагента к скорости потока легкого смешанного хладагента, и (iii) температуры потока (90) продукта сжиженного природного газа, Стр.: 1 A 2 0 1 8 1 2 4 7 4 0 (54) УПРАВЛЕНИЕ МОЩНОСТЬЮ КОМПРИМИРОВАНИЯ ХЛАДАГЕНТА В ПРОЦЕССЕ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА 2 0 1 8 1 2 4 7 4 0 (86) Заявка PCT: R U (43) Дата публикации заявки: 09.01.2020 Бюл. № 1 (72) ...

СПОСОБ И УСТРОЙСТВО ДЛЯ УДАЛЕНИЯ АЗОТА ИЗ КРИОГЕННОЙ УГЛЕВОДОРОДНОЙ КОМПОЗИЦИИ

1. Способ удаления азота из криогенной углеводородной композиции, содержащей азот- и метансодержащую жидкую фазу, причем данный способ включает:- обеспечение криогенной углеводородной композиции, содержащей азот- и метансодержащую жидкую фазу;- подачу первого потока сырья для колонны отпаривания азота при давлении отпаривания в колонну отпаривания азота, содержащую по меньшей мере одну внутреннюю секцию отпаривания, расположенную внутри колонны отпаривания азота, причем указанный первый поток сырья для колонны отпаривания азота содержит первую порцию криогенной углеводородной композиции;- отведение обедненной азотом жидкости из области сборника колонны отпаривания азота, расположенной ниже секции отпаривания;- получение по меньшей мере потока жидкого углеводородного продукта и технологического пара из обедненной азотом жидкости, включающее по меньшей мере стадию сброса давления обедненной азотом жидкости до давления мгновенного испарения;- сжатие указанного технологического пара до по меньшей мере давления отпаривания, тем самым получая сжатый пар;- селективное деление сжатого пара на отпарную порцию и неотпарную порцию, которая не содержит отпарной порции, при этом неотпарная порция содержит перепускаемую порцию указанного сжатого пара;- пропускание потока отпарного пара в колонну отпаривания азота на уровне, находящемся ниже по вертикали указанной секции отпаривания, причем указанный поток отпарного пара содержит по меньшей мере отпарную порцию указанного сжатого пара;- прохождение промежуточного пара через конденсатор, с помощью которого происходит косвенный теплообмен промежуточного пара с потоком РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F25J 3/02 (11) (13) 2014 128 669 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014128669, 10.12.2012 (71) Заявитель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: 12.12.2011 EP 11192922.0 (85) Дата начала рассмотрения ...

Verfahren zum Verflüssigen eines Kohlenwasserstoff-reichen Stromes

Es wird ein Verfahren zum Abkühlen oder Verflüssigen eines kohlenwasserstoffreichen Stromes, insbesondere eines Erdgas-Stromes, durch indirekten Wärmetausch mit dem Kältemittel oder Kältemittelgemisch wenigstens eines Kältemittel(gemisch)kreislaufes, wobei das Kältemittel bzw. Kältemittelgemisch einer Verdichtung unterworfen wird, beschrieben. Erfindungsgemäß wird das Kältemittel bzw. Kältemittelgemisch mittels wenigstens eines Vorleitgitter-geregelten Einwellen-Turboverdichters radialer Bauart verdichtet. Hierbei werden der oder die Vorleitgitter-geregelten Einwellen-Turboverdichter radialer Bauart vorzugsweise von wenigstens einem Elektromotor und/oder wenigstens einer Gasturbine angetrieben.

Method and apparatus for cooling and liquefying a hydrocarbon stream

PLANT FOR LIQUEFACTION OF NATURAL GAS

ARRANGEMENT, PROCEDURE AND PLANT FOR THE COMPRESSION OF A GAS OR A LIQUID

Method for the liquefaction and denitrogenation of natural gas, system for carrying out said method

Processes and systems for liquefying natural gas

LNG system and process with electrically powered refrigerant compressors and combined power generation cycle

Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition

Nitrogen is removed from a cryogenic hydrocarbon composition. A least a first portion of the cryogenic hydrocarbon composition is fed to a nitrogen stripper column as a first nitrogen stripper feed stream. A nitrogen-stripped liquid is drawn from the nitrogen stripper column. A liquid hydrocarbon product stream and a process vapour are produced comprising at least a step of depressurizing the nitrogen-stripped liquid to a flash pressure. The process vapour is compressed, and selectively split into a stripping portion and a non-stripping portion. A stripping vapour stream comprising at least the stripping portion is passed into the nitrogen stripper column. A vapour fraction is discharged as off gas, comprising a discharge fraction of overhead vapour from the nitrogen stripper column and comprising at least the bypass portion from the non-stripping portion of the compressed vapour, which bypasses a stripping section positioned in the nitrogen stripper column.

System and Method for the Production of Liquefied Natural Gas

A method for producing liquefied natural gas (LNG) is provided. The method may include feeding natural gas from a high-pressure natural gas source to a separator and removing a non-hydrocarbon from the natural gas. A portion of the natural gas from the separator may be precooled, and the precooled natural gas may be cooled in a first heat exchanger with a first refrigeration stream. A first portion of the cooled natural gas may be expanded in a turbo-expander to generate the first refrigeration stream. A second portion of the cooled natural gas may be cooled in a second heat exchanger with the first refrigeration stream and expanded in an expansion valve to produce a two-phase fluid containing the LNG and a vapor phase. The LNG may be separated from the vapor phase in a liquid separator and stored in a storage tank. 1. A method for producing liquefied natural gas from a high-pressure natural gas source , comprising:feeding natural gas from the high-pressure natural gas source to a separator;removing a non-hydrocarbon from the natural gas in the separator;precooling a portion of the natural gas from the separator in a cooling assembly;cooling the precooled natural gas from the cooling assembly in a first heat exchanger with a first refrigeration stream;expanding a first portion of the cooled natural gas from the first heat exchanger in a turbo-expander to generate the first refrigeration stream;cooling a second portion of the cooled natural gas from the first heat exchanger in a second heat exchanger with the first refrigeration stream;expanding the second portion of the cooled natural gas from the second heat exchanger in an expansion valve to produce a two-phase fluid containing the liquefied natural gas and a vapor phase;separating the liquefied natural gas from the vapor phase in a liquid separator; andstoring the liquefied natural gas in a storage tank.2. The method of claim 1 , further comprising at least partially separating natural gas liquids from the first ...

LIQUID NATURAL GAS PROCESSING WITH HYDROGEN PRODUCTION

Devices, systems, and methods for liquefied natural gas production facilities are disclosed herein. A liquefied natural gas (LNG) production facility includes a liquefaction unit that condenses natural gas vapor into liquefied natural gas; an electric-driven compression system for the refrigerant(s) in power to the liquefaction unit; and a sequestration compression unit configured to compress and convey at least one CO2-rich stream towards a sequestration site, thereby reducing the overall emissions from the LNG facility. 1. A liquefied natural gas (LNG) facility comprising:an acid gas removal unit configured to process a feed natural gas and generate an acid gas stream, a flash gas stream, and a purified natural gas stream, the LNG facility being configured to direct the acid gas stream to a sequestration compression unit;a liquefaction unit configured to condense a natural gas stream into an LNG; andthe sequestration compression unit configured to compress a CO2-rich stream and convey the compressed CO2-rich stream towards a sequestration site, the CO2-rich stream comprising the acid gas stream.2. The LNG facility of claim 1 , wherein the CO2-rich stream further comprises the flash gas stream.3. The LNG facility of claim 1 , wherein the sequestration compression unit comprises a compressor selected from the group consisting of an electric-driven compressor claim 1 , and electrically driven refrigerant compressor claim 1 , and combinations thereof.4. The LNG facility of claim 1 , wherein the sequestration site is selected from the group consisting ofan underground geological formation comprising an at least partially depleted hydrocarbon reservoir,a region on top of a seabed and located at a depth greater than about 3.0 kilometers below a sea level,a region below a seabed, andcombinations thereof.5. The LNG facility of claim 1 , wherein the acid gas removal unit comprises at least one of (i) an amine absorber and a liquid amine absorbent for absorbing CO2 from the ...

Gas Displacement Pump Assembly

A gas displacement assembly includes a storage container, a pump that pumps a pressurized gas material into the storage container, a cooling chamber that houses a coolant and cools the gas material to a cryogenic temperature, and a coolant line that transports coolant through the cooling chamber to cool the gas material. 1. A gas displacement assembly , comprising:a storage container;a pump that pumps a pressurized gas material into the storage container;a cooling chamber that houses a coolant and cools the gas material to a cryogenic temperature; anda coolant line that transports coolant through the cooling chamber.2. The gas displacement assembly of claim 1 , further comprising a gas line that transports the gas material through the pump and to the storage container.3. The gas displacement assembly of claim 2 , further comprising a reservoir located along the gas line that houses a supply of the gas material before the gas material reaches the pump.4. The gas displacement assembly of claim 1 , wherein the cooling chamber comprises a bath of the coolant and a coil that transports the gas material through the bath to cool the gas material to the cryogenic temperature.5. The gas displacement assembly of claim 1 , wherein the gas material is helium.6. The gas displacement assembly of claim 1 , wherein the gas material is argon.7. The gas displacement assembly of claim 1 , wherein the cooling chamber cools the gas material to a cryogenic temperature at which the gas material liquefies.8. The gas displacement assembly of claim 1 , wherein the cooling chamber cools the gas material to a cryogenic temperature before the gas material reaches the pump.9. The gas displacement assembly of claim 1 , further comprising a motor that drives the pump.10. The gas displacement assembly of claim 9 , wherein the motor is an electric motor.11. The gas displacement assembly of claim 1 , further comprising a cooling tower claim 1 , wherein the pump transmits the gas material through the ...

PROCESS FOR SUBCOOLING LIQUID STREAM WITH REFRIGERANT GAS

A liquefied gas cooling apparatus including: a gas flow path for carrying a liquefied gas that is liquefied by cooling; and a refrigeration unit including a refrigerating cycle formed by a compressor, a cooling unit, and an expander. The compressor is driven through an electric motor contained in a sealed housing together with a compressor mechanism. 1. A liquid sub-cooling apparatus comprising:a plurality of refrigeration units that sub-cool a liquid flowing in a liquid subcooling flow path, each of the refrigeration units includes a compressor, a cooling unit, and an expansion unit that form a refrigeration cycle without vaporizing or condensing refrigerant as well as a heat exchanger, each refrigeration unit is connected in parallel or series to the liquid subcooling flow path via the associated heat exchanger, the refrigeration units each subcool the liquid flowing in the liquid subcooling flow path, without evaporating refrigerant, wherein:each compressor includes a sealed housing, a compressor mechanism contained in the housing, and an electric motor contained in the housing together with the compressor mechanism and receiving electric power via an inverter;the compressor is driven by the electric motor;cooling performance of each of the refrigeration units is adjustable by each inverter that supplies electric power to each electric motor;the plurality of the refrigeration units are configured to obtain a predetermined cooling performance;the number of the plurality of the refrigeration units to operate is controlled according to a cold energy quantity of the liquefied gas cooling apparatus that varies depending on variations in the flow rate and in the temperature of the liquid flowing in the subcooled liquid flow path;a comparison is performed between an operation efficiency produced by adjusting the cooling performance by controlling the number of the plurality of the refrigeration units to operate; andan efficiency produced by adjusting the performance by ...

Isolated Power Networks Within An All-Electric LNG Plant And Methods For Operating Same

Embodiments generally relate to a motor driven compressor (MDC) power network electrically isolated and independent from a balance of plant (BOP) power network within an electrical power system and methods for operating the same. In one embodiment, the MDC power network can include one or more MDC trains, and each of the MDC trains can include an MDC distribution bus, one or more MDC turbine generators, one or more electric motors, and one or more compressors. The BOP power network can include a BOP distribution bus, one or more BOP turbine generators, and one or more plant circuits comprising the balance of the plant. 1. An electrical power system , comprising: a motor driven compressor turbine generator configured to generate the motor driven compressor electrical power;', 'a motor driven compressor distribution bus electrically connected to the motor driven compressor turbine generator and configured to distribute the motor driven compressor electrical power;', 'the electric motor electrically connected to the motor driven compressor distribution bus; and', 'the motor driven compressor coupled to the electric motor and configured to be driven by the electric motor; and, 'a motor driven compressor power network powering a single motor driven compressor train and configured to generate and distribute motor driven compressor electrical power, wherein each motor driven compressor train comprises a balance of plant turbine generator configured to generate the balance of plant electrical power;', 'a balance of plant distribution bus electrically connected to the balance of plant turbine generator and configured to distribute the balance of plant electrical power; and', 'one or more plant circuits electrically connected to the balance of plant distribution bus and configured to be powered by the balance of plant electrical power,, 'a balance of plant power network configured to generate and distribute balance of plant electrical power, wherein the balance of plant power ...

NATURAL GAS LIQUEFACTION INSTALLATION ARRANGED AT THE SURFACE OF AN EXPANSE OF WATER, AND ASSOCIATED COOLING METHOD

The installation () comprises: —at least one air-cooled heat exchanger (), the air-cooled heat exchanger () comprising a tube bundle capable of accepting a flow () that is to be cooled, and a fan capable of causing a flow of air to circulate across the bundle of tubes; —a water spraying assembly (). The desalination assembly () comprises a salt water pickup () in the expanse of water (), the desalination assembly () being coupled downstream to the water-spraying assembly (). The water spraying assembly () comprises at least one spray nozzle opening into the bundle of tubes, the or each spray nozzle being directed towards the tubes of the tube bundle so as to spray liquid demineralised water coming from the desalination assembly () into contact with the tubes of the tube bundle. 1. A natural gas liquefaction installation , arranged at the surface of a body of water , comprising:at least one air-cooled heat exchanger, the at least one air-cooled heat exchanger including a tube bundle configured to receive a flow that is to be cooled, and a fan configured to cause a flow of air to circulate across the tube bundle;a water-sprayer;a desalinizer including a salt water pickup in the body of water, the desalinizer being coupled downstream to the water sprayer,the water-sprayer including at least one spray nozzle emerging in the tube bundle, the at least one spray nozzle being directed towards tubes of the tube bundle so as to spray liquid demineralized water coming from the desalinizer into contact with the tubes of the tube bundle.2. The installation according to claim 1 , wherein the tube bundle has several levels of tubes claim 1 , the water-sprayer including at least a first spray nozzle emerging across from the tubes of a first level of tubes and at least one second spray nozzle emerging across from tubes of a second level of tubes.3. The installation according to claim 2 , wherein the air-cooled heat exchanger includes an enclosure defining an inner circulation pipe ...

Cooling and/or liquefying system and method

Disclosed is a low-temperature refrigeration device comprising a working circuit that forms a loop and contains a working fluid, the device further comprising a cooling exchanger for extracting heat from at least one member by exchanging heat with the working fluid, the working circuit forming a cycle comprising, connected in series: a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism, wherein the mechanism for cooling the working fluid and the heating mechanism comprise a common heat exchanger in which the working fluid flows in opposite directions in two separate transit portions of the circuit according to whether it is cooled or heated, the device being designed to ensure equal mass flow rates in the two transit portions in the common heat exchanger, the device also comprising a bypass for bypassing one of the two transit portions, said bypass comprising a bypass valve which, in the open state, changes the mass flow rate in one of the two transit portions.

SYSTEM AND METHOD FOR LIQUEFACTION OF NATURAL GAS

Systems and methods are provided for the production of liquefied natural gas. At least one of the systems may include a plurality of compression assemblies in fluid communication with a precooler assembly. One compression assembly may be a part of a precooling loop and may include at least one compressor driven by a variable or fixed speed motor. Another compression assembly may be part of a liquefaction loop and may include at least one pair of compressors, each compressor driven by a respective turbine. The liquefaction loop may be fluidly coupled to a main heat exchanger utilized to liquefy at least a portion of a feed gas stream containing natural gas flowing through the main heat exchanger, thereby producing liquefied natural gas. 1. A liquefaction system comprising:a first heat exchanger configured to receive a natural gas stream from a natural gas source and cool at least a first portion of the natural gas stream to liquefied natural gas; a plurality of first refrigerant compressors configured to compress the first refrigerant; and', 'a plurality of turbines configured to drive the plurality of first refrigerant compressors;, 'a first compression assembly fluidly coupled to the first heat exchanger and configured to circulate a first refrigerant through the first heat exchanger to cool the first portion of the natural gas stream to the liquefied natural gas, the first compression assembly comprising'}a precooler assembly fluidly coupled to the first compression assembly and the first heat exchanger and configured to cool the natural gas stream and the first refrigerant compressed by the plurality of first refrigerant compressors prior to the natural gas stream entering the first heat exchanger, the precooler assembly comprising a plurality of chillers configured to transfer thermal energy from the first refrigerant and the natural gas stream to a second refrigerant; and a plurality of second refrigerant compressors configured to compress the second ...

METHOD FOR HANDLING THE SHUTDOWN OF A TURBOMACHINE STRING IN A LIQUEFACTION PLANT OF A GASEOUS PRODUCT

A method for handling the shutdown of a turbomachine string installed in a plant for the liquefaction of a gaseous product comprising at least two turbomachine strings comprises the steps of detecting the shutdown of a first turbomachine string; promptly increasing the driving torque on a shaft of a second turbomachine string when the shutdown is detected; maintaining the driving torque increase on the shaft of the second turbomachine string until a preset speed of the motor driver is reached or a predetermined period of time expires. 1. A method for handling the shutdown of a turbomachine string , said turbomachine string being installed in a plant for the liquefaction of a gaseous product comprising at least two turbomachine strings , each turbomachine string comprises at least a motor driver and at least a driven compressor , the method comprising the steps of:detecting the shutdown of a first turbomachine string;promptly increasing the driving torque on a shaft of a second turbomachine string when the shutdown is detected;maintaining said driving torque increase on the shaft of the second turbomachine string so that the speed of the motor driver is increased from a current speed to a preset speed or a predetermined period of time expires.2. The method according to claim 1 , wherein the motor driver is a turbine and/or a helper motor claim 1 , preferably a helper electric motor.3. The method according to claim 1 , wherein the preset speed is the maximum operating speed of the motor driver.4. The method according to claim 1 , further comprising the step of maintaining said preset speed for a predetermined period of time or until the event causing the shutdown of the first turbomachine string is ended.5. The method according to claim 1 , further comprising the step of maintaining said driving torque increase until the event causing the shutdown of the first turbomachine string is ended.6. The method according to claim 1 , wherein said driving torque increase is ...

Method for the Production of Liquefied Natural Gas

A system and method for producing liquefied natural gas are provided. The method may include compressing a process stream containing natural gas in a compression assembly to produce a compressed process stream. The method may also include removing non-hydrocarbons from the compressed process stream in a separator, and cooling the compressed process stream with a cooling assembly to thereby produce a cooled, compressed process stream containing natural gas in a supercritical state. The method may further include expanding a first portion and a second portion of the natural gas from the cooled, compressed process stream in a first expansion element and a second expansion element to generate a first refrigeration stream and a second refrigeration stream, respectively. The method may further include cooling the natural gas in the cooled, compressed process stream to a supercritical state with the first and second refrigeration streams to thereby produce the liquefied natural gas. 1. A method for producing liquefied natural gas , comprising:compressing a process stream containing natural gas from a natural gas source in a compression assembly fluidly coupled with the natural gas source to produce a compressed process stream;removing one or more non-hydrocarbons from the compressed process stream in a separator fluidly coupled with the compression assembly;cooling the compressed process stream with a cooling assembly fluidly coupled with the compression assembly, thereby producing a cooled, compressed process stream containing the natural gas in a supercritical state;expanding a first portion of the natural gas in the cooled, compressed process stream in a first expansion element to generate a first refrigeration stream;expanding a second portion of the natural gas in the cooled, compressed process stream in a second expansion element to generate a second refrigeration stream; andcooling at least a portion of the natural gas in the cooled, compressed process stream to a ...

METHOD FOR STARTING AND OPERATING A PLANT FOR THE LIQUEFACTION OF A GASEOUS PRODUCT

A method for starting and operating a plant for the liquefaction of a gaseous product comprising the steps of electrically connecting a variable frequency drive to a motor of a first machine string; increasing the speed of the motor of the first machine string up until a first predefined threshold; electrically disconnecting the variable frequency drive from the motor of the first machine string; electrically connecting the variable frequency drive to a motor of a second machine string; the first predefined threshold is function of said frequency of the power supply grid. The variable frequency drive can be switched during operation of the plant among the strings according to process requirements. 1. A method for starting and operating a plant for the liquefaction of a gaseous product , said plant comprising at least a first and a second machine string , each string comprising an electrical motor and a load mechanically connected to the electric motor , the plant comprising a variable frequency drive connected to a power supply grid having an its own frequency and associable to the electrical motors , the method comprising the steps of:electrically connecting the variable frequency drive to the motor of the first machine string;increasing the speed of the motor of the first machine string up until a first predefined threshold is reached, wherein the first predefined threshold is function of said frequency of the power supply grid;electrically disconnecting the variable frequency drive from the motor of the first machine string and electrically connecting the motor of the first machine string to the power supply grid;electrically connecting the variable frequency drive to the motor of the second machine string; andregulating the speed of the motor of the second machine string by said variable frequency drive.2. The method according to claim 1 , wherein the speed of the motor of the first machine string is substantially maintained at the first predefined threshold.3. ...

Hydrocarbon Distillation

Systems and methods are provided for increasing the efficiency of liquefied natural gas production and heavy hydrocarbon distillation. In one embodiment, air within an LNG production facility can be utilized as a heat source to provide heat to HHC liquid for distillation in a HHC distillation system. The mechanism of heat transfer from the air can be natural convection. In another embodiment, heat provided by natural gas, or compressed natural gas, can be used for HHC distillation. In other embodiments, various other liquids can be used to transfer heat to HHC liquid for distillation. 119-. (canceled)20. A system for producing liquefied natural gas (LNG) and electrical power , comprising:a LNG production facility configured to receive a natural gas feedstock and to form liquefied natural gas from the natural gas feedstock, wherein the LNG production facility receives electrical power from an external power source; anda power generation facility configured to create electrical power using the natural gas feedstock or an additional fuel source and to provide a first portion of the electrical power to the LNG production facility.21. The system of claim 20 , wherein the external power source includes one of a local power grid and a battery bank.22. The system of claim 20 , wherein the additional fuel source includes a fuel vapor received from the LNG production facility claim 20 , the fuel vapor collected while reducing a pressure of the liquefied natural gas within the LNG production facility.23. The system of claim 20 , wherein the additional fuel source includes one of petroleum fuel claim 20 , diesel fuel claim 20 , propane claim 20 , and kerosene.24. The system of claim 20 , wherein the power generation facility is further configured to provide a second portion of the electrical power for storage in batteries or to a local power grid.25. The system of claim 20 , wherein waste heat generated at the power generation facility can be provided to the LNG production ...

System and Method for the Production of Liquefied Natural Gas

A method for producing liquefied natural gas (LNG) and separating natural gas liquids (NGLs) from the LNG is provided. The method may include compressing natural gas to compressed natural gas, removing a non-hydrocarbon from the compressed natural gas, and cooling the compressed natural gas to a cooled, compressed natural gas. The method may also include expanding a first portion and a second portion of the cooled, compressed natural gas in a first expansion element and a second expansion element to generate a first refrigeration stream and a second refrigeration stream, respectively. The method may further include separating a third portion of the cooled, compressed natural gas into a methane lean natural gas fraction containing the NGLs and a methane rich natural gas fraction. The methane rich natural gas fraction may be cooled in a liquefaction assembly with the first and second refrigeration streams to thereby produce the LNG. 1. A method for producing liquefied natural gas from a natural gas source and separating natural gas liquids from the liquefied natural gas produced , comprising:compressing natural gas from the natural gas source in a compression assembly fluidly coupled with the natural gas source to produce a compressed natural gas;removing a non-hydrocarbon from the compressed natural gas in a separator fluidly coupled with the compression assembly;cooling the compressed natural gas to a cooled, compressed natural gas with a cooling assembly in thermal communication with the compression assembly;expanding a first portion of the cooled, compressed natural gas in a first expansion element to generate a first refrigeration stream;expanding a second portion of the cooled, compressed natural gas in a second expansion element to generate a second refrigeration stream;feeding a third portion of the cooled, compressed natural gas to a distillation column of a distillation assembly;separating the third portion of the cooled, compressed natural gas into a ...

NATURAL GAS LIQUEFACTION SYSTEM INCLUDING AN INTEGRALLY-GEARED TURBO-COMPRESSOR

According to one aspect of the present disclosure, a natural gas liquefaction system () is provided. The system comprises an integrally-geared turbo-compressor () with a plurality of compressor stages; a prime mover () for driving the compressor; a pre-cooling loop (), through which a first refrigerant is adapted to circulate, wherein one or more first compressor stages () of the plurality of compressor stages are adapted to pressurize the first refrigerant; a cooling loop (), through which a second refrigerant is adapted to circulate, wherein one or more second compressor stages () of the plurality of compressor stages are adapted to pressurize the second refrigerant; a first heat exchanger device () for transferring heat from a natural gas and/or from the second refrigerant to the first refrigerant; and a second heat exchanger device () for transferring heat from the natural gas to the second refrigerant. A further aspect relates to a compressor arrangement for a natural gas liquefaction system. A yet further aspect relates to a method of liquefying natural gas. 1100. A natural gas liquefaction system () , comprising:{'b': '150', 'an integrally-geared turbo-compressor () with a plurality of compressor stages;'}{'b': 160', '150, 'a single prime mover () for driving the compressor ();'}{'b': 110', '151, 'a pre-cooling loop (), through which a first refrigerant is adapted to circulate, wherein one or more first compressor stages () of the plurality of compressor stages are adapted to pressurize the first refrigerant;'}{'b': 130', '155, 'a cooling loop (), through which a second refrigerant is adapted to circulate, wherein one or more second compressor stages () of the plurality of compressor stages are adapted to pressurize the second refrigerant;'}{'b': '170', 'a first heat exchanger device () for transferring heat from a natural gas and/or from the second refrigerant to the first refrigerant; and'}{'b': '180', 'a second heat exchanger device () for transferring ...

System and Method for the Production of Liquefied Natural Gas

A system and method for producing liquefied natural gas are provided. The method may include compressing a process stream containing natural gas in a compression assembly to produce a compressed process stream. The method may also include removing non-hydrocarbons from the compressed process stream in a separator, and cooling the compressed process stream with a cooling assembly to thereby produce a cooled, compressed process stream containing natural gas in a supercritical state. The method may further include expanding a first portion and a second portion of the natural gas from the cooled, compressed process stream in a first expansion element and a second expansion element to generate a first refrigeration stream and a second refrigeration stream, respectively. The method may further include cooling the natural gas in the cooled, compressed process stream to a supercritical state with the first and second refrigeration streams to thereby produce the liquefied natural gas.

LOW PRESSURE ETHANE LIQUEFACTION AND PURIFICATION FROM A HIGH PRESSURE LIQUID ETHANE SOURCE

A plant and process are used to liquefy and purify a high pressure ethane feed stream. The plant includes a cascaded refrigeration system that refrigerates the ethane feed stream. The refrigeration system includes a propylene circuit, an ethylene circuit and a mixed refrigerant circuit. The mixed refrigerant circuit includes a refrigerant that includes ethane and methane. The plant includes a demethanizer that is configured to remove methane and other natural gas liquids from the refrigerated ethane stream. 1. A method for liquefying and purifying a high pressure ethane feed stream , the method comprising the steps of:dehydrating the ethane feed stream; and passing the dehydrated ethane feed stream through a plurality of cascaded refrigeration circuits; and', 'demethanizing a portion of the refrigerated ethane feed stream., 'refrigerating the dehydrated ethane feed stream, wherein the step of refrigerating the dehydrated ethane feed stream further comprises2. The method of claim 1 , wherein the step of refrigerating the dehydrated ethane feed stream further comprises passing the dehydrated ethane feed stream through a plurality of cascaded refrigeration circuits that use a plurality of refrigerants.3. The method of claim 2 , wherein the step of refrigerating the dehydrated ethane feed stream further comprises:passing a propylene refrigerant through a first refrigeration circuit;passing the dehydrated ethane feed stream through the first refrigeration circuit;passing an ethylene refrigerant through a second refrigeration circuit;passing the dehydrated ethane feed stream through the second refrigeration circuit;passing a mixed refrigerant through a third refrigeration circuit; andpassing the dehydrated ethane feed stream through the third refrigeration circuit.4. The method of claim 3 , wherein the step of passing the mixed refrigerant further comprises passing a mixed refrigerant that includes methane and ethane through the third refrigeration circuit.5. The method ...

PROCESS FOR PRODUCING LIQUID HYDROGEN

The invention relates to an integrated process for continuous production of liquid hydrogen, comprising (a) producing gaseous hydrogen by electrolysis; and (b) liquefying said gaseous hydrogen in a hydrogen liquefaction unit, which liquefaction unit is powered by energy essentially from renewable sources; and, (c) when additional power is needed, using electrical energy generated in a process in which electrical energy and hydrogen are co-generated by an integrated electrolysis process comprising: (d) electrolysing a metal salt or mixture of metal salts and water into the corresponding metal or metals, acid or acids, and oxygen (electricity storage phase), and (e) producing gaseous hydrogen and recovering electricity in a regeneration reaction of the metal (s) and acid(s) of step (d) (regeneration phase); wherein at least part of the gaseous hydrogen generated in step (e) is used in step (b) of the process. 2. The process of claim 1 , wherein the metal salt or mixture of metal salt is/are selected from ZnSO claim 1 , MgSO claim 1 , and/or MgCl claim 1 , and the like.3. The process of claim 2 , wherein the metal salt is ZnSO.4. The process of claim 1 , wherein the hydrogen and electricity products of step (e) are individually produced as needed “on-demand”.5. The process of claim 1 , wherein additional sources of electricity supply are used as back-up when the renewable power source is not available and/or electricity regenerated in step (e) is not enough.6. The process of claim 1 , wherein gaseous hydrogen is stored after step (e) and before liquefying the hydrogen.7. An integrated system for continuously producing liquid hydrogen claim 1 , comprising an energy inlet for feeding energy from renewable sources into an electrolysis system for co-generation of electrical energy and hydrogen claim 1 , which comprises an energy storage part and a regeneration part claim 1 , wherein the regeneration part of the electrolysis system has an outlet for hydrogen that is ...

Liquefied gas cooling apparatus

A liquefied gas cooling apparatus includes: a gas flow path for carrying a liquefied gas that is liquefied by cooling; and a refrigeration unit including a refrigerating cycle formed by an evaporator for cooling the liquefied gas flowing through the gas flow path, a compressor, a condenser, and a throttle expansion unit. The refrigeration unit includes: an inlet-side open/close valve and an outlet-side open/close valve provided in an inlet path and an outlet path of the compressor, respectively; and a service open/close valve in a refrigerant path between the inlet-side open/close valve and the outlet-side open/close valve.

LIQUEFIED GAS COOLING APPARATUS

A liquefied gas cooling apparatus including: a gas flow path for carrying a liquefied gas that is liquefied by cooling; and a refrigeration unit including a refrigerating cycle formed by an evaporator for cooling the liquefied gas flowing through the gas flow path, a compressor, a condenser, and a throttle expansion unit. The compressor is driven through an electric motor contained in a sealed housing together with a compressor mechanism. 112.-. (canceled)13. A liquefied gas cooling apparatus comprising:a gas flow path for carrying a liquefied gas that is liquefied by cooling; and a sealed housing;', 'a compressor mechanism contained in the housing; and', 'an electric motor contained in the housing together with the compressor mechanism, wherein, 'a refrigeration unit including a refrigerating cycle formed by an evaporator for cooling the liquefied gas flowing through the gas flow path, a compressor, a condenser, and a throttle expansion unit, the compressor comprisingthe compressor is driven through the electric motor,the refrigeration unit is modularized into multiple refrigeration modules connected in parallel or series to the gas flow path to achieve needed cooling performance,the number of refrigeration modules to operate is controlled according to needed cooling performance dependent on variations in the flow rate of the liquefied gas and in the temperature of the liquefied gas flowing in,the performances of the refrigeration modules are adjustable by the respective inverters, a comparison is performed between an efficiency produced by adjusting the performance by controlling the number of modules to operate, and an efficiency produced by adjusting the performance by controlling the rotation speed of the compressor, and adjustment is performed by one of these with higher efficiency, andto select control of the number of refrigeration modules to operate or control of the rotation speed of the compressor, maintenance cost per operation time of the compressor ...

CONTROLLING REFRIGERANT COMPRESSION POWER IN A NATURAL GAS LIQUEFACTION PROCESS

The present invention relates to a method of controlling the production of a liquefied natural gas product stream () obtained by removing heat from natural gas by indirect heat exchange with an expanded heavy mixed refrigerant and an expanded light mixed refrigerant. The method comprises executing a control loop comprising maintaining the flow rate of the liquefied natural gas product stream () at a dependent set point and maintaining the flow rates of the heavy mixed refrigerant () and the light mixed refrigerant () at operator manipulated set points (). The method further comprises executing an override control loop comprising: determining an override set point (′) for the flow rate of the liquefied natural gas and computing an override set point (′) for the flow rate of the heavy mixed refrigerant and an override set point (′) to reduce residual available power of the electric motor. 1. A method of controlling the production of a liquefied natural gas product stream obtained by removing heat from natural gas in a main heat exchanger in which the natural gas is in indirect heat exchange with an expanded heavy mixed refrigerant and an expanded light mixed refrigerant ,wherein the method comprises circulating the heavy and light mixed refrigerant through a refrigerant cycle, the refrigerant cycle comprising a centrifugal compressor driven by an electric motor,wherein the method comprises executing a control loop comprising:a) determining a dependent set point for the flow rate of the liquefied natural gas product stream based on operator manipulated set points for (i) a flow rate of one of the refrigerants (the heavy mixed refrigerant, the light mixed refrigerant or the total mixed refrigerant), (ii) a ratio of the flow rate of the heavy mixed refrigerant to the flow rate of the light mixed refrigerant, and (iii) a temperature of the liquefied natural gas product stream,determining the operator manipulated set point for the flow rate of the heavy mixed refrigerant ...

Low pressure ethane liquefaction and purification from a high pressure liquid ethane source

A plant and process are used to liquefy and purify a high pressure ethane feed stream. The plant includes a cascaded refrigeration system that refrigerates the ethane feed stream. The refrigeration system includes a propylene circuit, an ethylene circuit and a mixed refrigerant circuit. The mixed refrigerant circuit includes a refrigerant that includes ethane and methane. The plant includes a demethanizer that is configured to remove methane and other natural gas liquids from the refrigerated ethane stream.

Method and apparatus for removing nitrogen from cryogenic hydrocarbon composition

FIELD: technological processes. SUBSTANCE: invention relates to method and device for removing nitrogen from cryogenic hydrocarbon composition. At least first part of cryogenic hydrocarbon composition is supplied into nitrogen desorption column. Nitrogen desorption column operates under desorption pressure. In nitrogen desorption column desorbing steam is supplied, containing at least stripping part of compressed process steam, which was produced from nitrogen-depleted fluid, in which pressure was released after its removal from nitrogen desorption column. Reverse irrigation is formed with participation of nitrogen desorption column head partially condensed steam by means of heat transfer from head steam to auxiliary coolant flow in amount of cooling efficiency. Exhaust gas consisting of non-condensed steam fraction from head steam, is removed. Cooling efficiency is adjusted to control of discharged steam fraction calorific capacity. EFFECT: technical result is possibility of discharged steam fraction calorific capacity control. 20 cl, 2 dwg, 3 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 607 708 C2 (51) МПК F25J 3/02 (2006.01) F25J 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2014128666, 10.12.2012 (24) Дата начала отсчета срока действия патента: 10.12.2012 (72) Автор(ы): САНТОС Алексадр М.К.Р. (MY) (73) Патентообладатель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: WO 2011/009832 A2, 27.01.2011. RU Приоритет(ы): (30) Конвенционный приоритет: R U 09.01.2017 2362954 C2, 27.07.2009. US 2011/0239701 A1, 06.10.2011. 12.12.2011 EP 11192920.4 (45) Опубликовано: 10.01.2017 Бюл. № 1 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 14.07.2014 (86) Заявка PCT: EP 2012/074959 (10.12.2012) (87) Публикация заявки PCT: 2 6 0 7 7 0 8 (43) Дата публикации заявки: 10.02.2016 Бюл. № 4 2 6 0 7 7 0 8 ...

Способ и устройство для охлаждения и сжижения потока углеводородов

1. Способ охлаждения и сжижения потока углеводородов на плавучем основании или морской платформе, включающий, по меньшей мере, стадии: !(a) пропускания исходного потока углеводородов в противотоке с двумя или большим количеством потоков хладагента с получением охлажденного и сжиженного потока углеводородов и двух или большего количества, по меньшей мере, частично испаренных потоков хладагента; ! (b) сжатия, по меньшей мере, одного из, по меньшей мере, частично испаренных потоков углеводородов при прохождении через, по меньшей мере, один или большее число первых компрессоров для хладагента; ! (c) сжатия, по меньшей мере, одного из, по меньшей мере, частично испаренных потоков углеводородов при прохождении через, по меньшей мере, один или большее число вторых компрессоров для хладагента; ! (d) привода в действие одной или большего числа газовых турбин для получения: ! (i) электрической энергии и ! (ii) горячего газа; ! (e) пропускания горячего газа стадии (d) (ii) через один или большее число парогенерирующих теплообменников для получения энергии водяного пара; ! (f) использования электрической энергии для привода, по меньшей мере, одного из вторых компрессоров для хладагента; и ! (g) использования энергии пара для привода в действие одной или большего числа паровых турбин, приводящих в действие, по меньшей мере, один из первых компрессоров для хладагента; ! при этом способ осуществляют на плавучем основании или морской платформе, содержащей один или большее количество резервуаров для хранения сжиженных углеводородов и/или сжиженных компонент для хладагентов, причем одна или большее число газовых турбин приводятся в действие РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 122 953 (13) A (51) МПК F25J 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2010122953/06, 05.11.2008 (71) Заявитель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: 07.11.2007 EP 07120144.6 08.11.2007 ...

Liquefaction method and system

실질적으로 증기인 제1 팽창 가스상 냉매 스트림(154)을 공급하도록 냉각 압축 가스상 냉매 스트림(150)이 팽창되며(136), 간접 열교환(110)을 통해 공급 가스 스트림(100)을 냉각하고 실질적으로 액화하는 데 사용되는 폐쇄 루프 냉각 시스템을 사용하여 공급 가스가 액화된다. 실질적으로 액화된 공급 가스 스트림(102)은, 바람직하게는 역시 실질적으로 증기이고, 냉각 압축 가스상 냉매 스트림(170) 또는 제1 팽창 가스상 냉매 스트림(152)의 일부에 의해 제공될 수 있는 제2 팽창 가스상 냉매 스트림(172)에 대한 간접 열교환(112)을 통해 과냉각되는 것이 바람직하다. 압축 가스상 냉매 스트림(146)에 대한 냉각 듀티(duty)는 제1 팽창 가스상 냉매 스트림(152)의 일부(160), 공급 가스에 대한 상기 열교환(110)에 의해 부분적으로 가열된 가스상 냉매(156), 및/또는 상기 과냉각(112)에 의해 가열된 제2 팽창 가스상 냉매 스트림(174)에 의해 공급된다. The cold compressed gaseous refrigerant stream 150 is expanded 136 to supply a substantially vaporized first expanded gaseous refrigerant stream 154, which cools and substantially liquefies the feed gas stream 100 through an indirect heat exchange 110. The feed gas is liquefied using a closed loop cooling system that is used to. The substantially liquefied feed gas stream 102 is preferably a second expansion, which is also substantially vapor and may be provided by a cold compressed gaseous refrigerant stream 170 or a portion of the first expanded gaseous refrigerant stream 152. Preferably, supercooled through indirect heat exchange 112 for gaseous refrigerant stream 172. The cooling duty for the compressed gaseous refrigerant stream 146 is a portion 160 of the first expanded gaseous refrigerant stream 152, the gaseous refrigerant 156 partially heated by the heat exchange 110 for feed gas. And / or by a second expanding gaseous refrigerant stream 174 heated by the subcooling 112.

Способ сжиженя предварительно охлажденных газов

1. Способ сжижения потока природного газа, включающий этапы, на которых: ! обеспечивают обезвоженный поток природного газа для сжижения; ! предварительно охлаждают обезвоженный поток природного газа в устройстве предварительного охлаждения, при этом предварительное охлаждение осуществляют путем использования предохладителя, который состоит в основном из гидрофторуглеродного (ГФУ) хладагента; ! дополнительно охлаждают предварительно охлажденный обезвоженный поток природного газа в основном теплообменнике посредством непрямого теплообмена с парообразным углеводородным смешанным холодильным агентом для получения потока продукта - сжиженного природного газа, при этом смешанный холодильный агент содержит этан, метан, азот и менее 3 мол.% пропана или 3 мол.% пропана. ! 2. Способ по п.1, при этом способ для проведения сжижения потока природного газа имеет место на плавучей платформе нефтедобычи хранения и выгрузки нефти (FPSO) (Floating Production Storage and Offloading platform). ! 3. Способ по п.1, в котором смешанный холодильный агент содержит менее 2 мол.% пропана. ! 4. Способ по п.1, в котором смешанный холодильный агент содержит менее 1 мол.% пропана. ! 5. Способ по п.1, в котором гидрофторуглеродным хладагентом является R410A. ! 6. Способ по п.1, в котором гидрофторуглеродный хладагент имеет температурный гистерезис, менее или равный 7°C. ! 7. Способ по п.1 дополнительно включает в себя подачу предварительно охлажденного обезвоженного потока природного газа в промывную колонну, где предварительно охлажденный обезвоженный поток природного газа перегоняется и очищается от части тяжелых углеводородов, присутствующих в предварительно охлажденном о РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 117 633 (13) A (51) МПК F23C 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2010117633/06, 04.05.2010 (71) Заявитель(и): ЭР ПРОДАКТС ЭНД КЕМИКАЛЗ, ИНК. (US) Приоритет(ы): (30) Конвенционный ...

Natural gas liquefaction method

FIELD: oil, gas and coke-chemical industries. SUBSTANCE: invention relates to liquefaction of a hydrocarbon-enriched fraction, particularly natural gas. Fraction enriched with hydrocarbons is cooled and liquefied in at least two refrigerating cycles. Each refrigerating cycle has at least one circulation compressor. Coldest refrigerating cycle has two series-connected circulation compressors, namely one low-pressure circulating compressor and one high-pressure circulating compressor. With the exception of the high-pressure circulating compressor (C4, C4') in the coldest refrigerating cycle, circulating compressors (C1-C3, C1'-C3') with the same number of revolutions are used, which have a drive from only one gas turbine (GT). Gas turbine (GT) supplies at least 70 %, preferably at least 75 % of required total drive power of all circulation compressors (C1-C4, C1'-C4'). Circulation compressor (C4, C4') of high pressure in the coldest refrigerating cycle is driven by electric motor (M2) or steam turbine. EFFECT: technical result is improved reliability and compactness and simplified design. 5 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 698 565 C2 (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/0022 (2019.05); F25J 1/0207 (2019.05); F25J 1/0214 (2019.05); F25J 1/0217 (2019.05); F25J 1/0264 (2019.05); F25J 1/0282 (2019.05); F25J 1/0283 (2019.05); F25J 1/0284 (2019.05); F25J 1/0287 (2019.05); F25J 1/0289 (2019.05); F25J 1/029 (2019.05); F25J 1/0292 (2019.05) (21)(22) Заявка: 2016105466, 18.02.2016 18.02.2016 (73) Патентообладатель(и): ЛИНДЕ АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: RU 2373465 C2, 20.11.2009. US 6253574 B1, 03.07.2001. RU 2352877 C2, 20.04.2009. DE 102005029275 A1, 28.12.2006. EA 800 B1, 24.04.2000. Приоритет(ы): (30) Конвенционный приоритет: 19.02.2015 DE 102015002164.8 (43) Дата ...

液化设备、方法和系统

本公开的方面涉及天然气的岸边液化。一个示例性方面包括一种设备，其包括：(i)风冷电动制冷模块(“AER模块”)，其配置为从源输入电力和预处理的进料气体、将预处理的进料气体转换成液化天然气(“LNG”)、并输出LNG；(ii)多个LNG储箱，其配置为从AER模块输入LNG并将LNG输出到LNG运输船。根据该方面，AER模块可位于水上设备的上甲板上，并且所述多个LNG储箱可位于设备的船体中。公开了设备以及相关套件、方法和系统的许多其他示例性方面。

Pre­cooled liquefaction process

Natural gas stream liquefaction system and natural gas stream liquefaction method, the natural gas stream liquefaction method includes a stream supply step of supplying a dehydrated natural gas stream for liquefaction, and a dehydration natural gas stream in a precooler. The precooling step of cooling, wherein the precooling step is carried out by using a precooling agent based on a HydroFluoroCarbon (HFC) refrigerant, and the main heat exchanger to produce a liquefied natural gas product stream. And, further cooling the precooled dehydrated natural gas stream through indirect heat exchange with the vaporized hydrocarbon mixed refrigerant coolant, wherein the mixed refrigerant coolant comprises ethane, methane, nitrogen and up to 3 mole percent propane.

METHOD AND DEVICE FOR REMOVING NITROGEN FROM CRYOGENIC HYDROCARBON COMPOSITION

1. Способ удаления азота из криогенной углеводородной композиции, содержащей азот- и метансодержащую жидкую фазу, причем данный способ включает в себя:- обеспечение криогенной углеводородной композиции, содержащей азот- и метансодержащую жидкую фазу при исходном давлении от 1 до 2 бар абс. (0,1-0,2 МПа);- отбор побочного пара из криогенной углеводородной композиции;- сжатие указанного побочного пара до давления обработки в диапазоне от 2 до 15 бар абс. (0,2-1,5 МПа), тем самым получая сжатый пар;- образование частично сконденсированного промежуточного потока из сжатого пара, содержащего сконденсированную фракцию и паровую фракцию, причем указанное образование включает в себя частичную конденсацию сжатого пара с помощью теплообмена сжатого пара с потоком вспомогательного хладагента и, таким образом, поступление тепла от сжатого пара в поток вспомогательного хладагента в режиме охлаждения;- отделение сконденсированной фракции от паровой фракции в первом газожидкостном сепараторе, при давлении сепарации от 2 до 15 бар абс. (0,2-1,5 МПа);- отведение паровой фракции из первого газожидкостного сепаратора в виде отходящего газа, причем указанная паровая фракция обладает теплотворной способностью;- отведение сконденсированной фракции из первого газожидкостного сепаратора;- сброс давления сконденсированной фракции до давления не ниже, чем исходное давление, тем самым образуя порцию рециркулята сниженного давления;- введение порции рециркулята сниженного давления в криогенную углеводородную композицию;- корректировку режима охлаждения для регулирования теплотворной способности паровой фракции, отводимой из первого газожид РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F25J 1/00 (11) (13) 2014 125 539 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014125539/06, 22.11.2012 (71) Заявитель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: 25.11.2011 EP 11190671.5 (85) Дата начала ...

Motor driven compressor system for natural gas liquefaction

천연가스 액화시스템은 모터를 압축기 드라이버로서 사용한다. 모터와 스팀 터빈의 조합은 코제너레이션 플랜트에 의해 구동되어 드라이버로서 사용된다.

Cooling power capacity control during natural gas liquefaction

Изобретение относится к способу управления производством потока (31) продукта сжиженного природного газа, получаемого путем отбора тепла от природного газа путем непрямого теплового обмена с расширенным тяжелым смешанным хладагентом и расширенным легким смешанным хладагентом. Способ включает выполнение контура управления, включающего поддержание скорости потока (31) продукта сжиженного природного газа при зависимом установочном значении, и поддержание скоростей потока тяжелого смешанного хладагента (60а) и легкого смешанного хладагента (65) при заданных оператором установочных значениях (80, 81). Способ дополнительно включает выполнение контура управления переопределением, содержащего определение установочного значения (95’) переопределения для скорости потока сжиженного природного газа, и вычисление установочного значения (80’) переопределения для скорости потока тяжелого смешанного хладагента и установочного значения (81’) переопределения. Техническим результатом является оптимизация доступной мощности для привода компрессора в циклах смешанного хладагента. 2 н. и 7 з.п. ф-лы, 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 723 109 C2 (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/0022 (2020.02); F25J 1/0052 (2020.02); F25J 1/0055 (2020.02); F25J 1/0212 (2020.02); F25J 1/0214 (2020.02); F25J 1/0216 (2020.02); F25J 1/0252 (2020.02); F25J 1/0284 (2020.02); F25J 1/0292 (2020.02) (21)(22) Заявка: 2018124740, 06.12.2016 06.12.2016 Дата регистрации: Приоритет(ы): (30) Конвенционный приоритет: 08.12.2015 IN 6543/CHE/2015; 19.01.2016 EP 16151934.3 (43) Дата публикации заявки: 09.01.2020 Бюл. № 1 (56) Список документов, цитированных в отчете о поиске: EP 1281033 A1, 05.02.2003. RU 2170894 C2, 20.07.2001 . EA 200501207 A1, 24.02.2006. US 2012079850 A1, 05.04.2012. EP 0893665 A2, 27.01.1999. (45) Опубликовано: 08.06.2020 Бюл. № 16 C 2 C 2 (85) Дата начала рассмотрения заявки PCT на ...

Apparatus and method for reliquefying boil-off gas capable of refrigeration load variable operation

An apparatus for reliquefying boil-off gas is provided to minimize amount of nitrogen gas during reliquefying load operation, and to reduce power consumption during idling by allowing refrigeration load of a refrigeration system to be varied during variation of reliquefying load. An apparatus for reliquefying boil-off gas comprises a refrigeration system. The refrigeration system for compressing and expanding refrigerant is connected to an ultra low temperature heat exchanger(11). The refrigeration system includes a multi-step compressor(53), an expander(23) and a motor(M). An inverter(60) is connected to the motor. The refrigeration system uses nitrogen as refrigerant. A refrigerant circuit of the multi-step compressor is connected to one end of a nitrogen gas supply line(L4) for supplying nitrogen gas inside the refrigeration system.

Refrigerating apparatus and refrigerating method

一种制冷装置，该制冷装置旨在通过与在工作回路(10)中循环的工作流体进行热交换而从至少一个构件(15)中提取热量，该装置包括以下串联的机构：流体压缩机构(13)，优选地等压或基本上等压流体冷却机构，流体膨胀机构(8)，以及流体加热机构(9，6)，在该装置中，压缩机构(13，4)是离心压缩型的并且由串联地布置在回路(10)中的两个压缩级(13，4)组成，该装置包括对两个压缩级(13，4)进行驱动的两个相应的电驱动马达(2，7)，该膨胀机构由涡轮(8)组成，该涡轮联接到压缩级(13，4)中的一个压缩级的马达(2)，该膨胀机构的涡轮(8)联接到该第一压缩级的驱动马达(2)。

Patent RU2018124740A3

ВУ” 2018124740” АЗ Дата публикации: 14.04.2020 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2018124740/12(039271) 06.12.2016 РСТ/ЕР2016/079893 06.12.2016 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 6543/СНЕ/2015 08.12.2015 [М 2. 16151934.3 19.01.2016 ЕР Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) УПРАВЛЕНИЕ МОЩНОСТЬЮ КОМПРИМИРОВАНИЯ ХЛАДАГЕНТА В ПРОЦЕССЕ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА Заявитель: ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В., М1. 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты см. п см. Примечания [ ] приняты во внимание следующие пункты: р [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) Е25.7 1/00 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) Е257 1/00, 1/02 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): Езрасепе, РАТЕМТСОРЕ, Рабеагсв, КОРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория ...

Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition

질소와 메탄-함유 액상을 포함하는 극저온 탄화수소 조성물로부터 질소가 제거된다. 1-2 bara 사이의 낮은 압력에서 극저온 탄화수소 조성물로부터 부산물 증기가 2-15bara 사이 범위의 분리압력으로 압축된다. 그와같이 압축 증기는, 보조냉매 스트림에 대해 압축 증기를 열교환하고 이로써 압축 증기의 열을 쿨링 듀티에서 보조냉매 스트림으로 전달하여 부분적으로 액화된다. 부분적으로 액화된 압축 증기의 응축 분획은 감압되고 적어도 그 일부분이 극저온 탄화수소 조성물에 재주입된다. 부분적으로 액화된 압축 증기의 비응축된 증기분획으로 이루어지는 오프가스는 제 1 가스/액체 분리기로부터 배출된다. 쿨링 듀티는 배출되는 증기 분획의 발열량을 조절하도록 조정된다. Nitrogen is removed from the cryogenic hydrocarbon composition comprising nitrogen and a methane-containing liquid phase. At low pressure between 1-2 bara, the byproduct vapor from the cryogenic hydrocarbon composition is compressed to a separation pressure in the range of 2-15 bara. As such, the compressed vapor is partially liquefied by heat exchanging the compressed vapor against the auxiliary refrigerant stream, thereby transferring the heat of the compressed vapor from the cooling duty to the auxiliary refrigerant stream. The condensed fraction of the partially liquefied compressed vapor is reduced and at least a portion thereof is re-injected into the cryogenic hydrocarbon composition. The off-gas comprising the uncondensed vapor fraction of the partially liquefied compressed vapor is discharged from the first gas / liquid separator. The cooling duty is adjusted to regulate the calorific value of the discharged steam fraction.

Method of cooling and liquefying a hydrocarbon stream, an apparatus therefor, and a floating structure, caisson or off-shore platform comprising such an apparatus

A method and apparatus for cooling and liquefying a hydrocarbon stream (10, 20) using a liquefaction process wherein a hydrocarbon stream is cooled and at least partially liquefied to obtain a liquefied hydrocarbon stream (20, 50, 70). In the method, one or more compressors (32, 34, 36) are driven with one or more electric drivers (Dl, D2, D3), that are powered with one or more dual-fuel diesel-electric generators (300). These dual-fuel diesel-electric generations (300) are operated by passing one or more hydrocarbon fuel streams (96) to the one or more dual-fuel diesel-electric generators, wherein at least one of the one or more hydrocarbon fuel streams comprises a stream (40, 60) that is generated in the liquefaction process. The apparatus may be provided on a floating structure (52), a caisson, or off-shore platform.

PROCESS FOR THE LIQUEFACTION AND DEAZOTATION OF NATURAL GAS, THE INSTALLATION FOR IMPLEMENTATION, AND GASES OBTAINED BY THIS SEPARATION

Condensation system for expansion of untreated brönnström from an offshore gas or gas condensate field

In a method of condensing an unprocessed well stream from an offshore gas or gas condensate field the well stream taken from one or more wellheads is cooled and directly expanded, isentropically, or near isentropically, to a state in which the pressure is close to that of a storage tank. Part of the well stream is condensed and condensed fractions thereof is drawn off the expander and fed to the storage tank along with condensation products from the exit of the expander. Hence, without any preprocessing, a condensed well stream product is produced which comprises a mixture of liquids and solids which is collected in the storage tank for transport therefrom to land. A system for carrying out the method is also disclosed. The invention makes the condensation of an unprocessed well stream possible without any preprocessing thereof, such as extraction of solid particles, e.g. sands, removal of water, cleaning or drying. Thus, by means of the invention smaller gas or gas condensate fields can be developed in a more cost efficient way.

Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition

Nitrogen is removed from a cryogenic hydrocarbon composition. The cryogenic hydrocarbon composition is split into a first portion and a second portion having the same composition and phase as the first portion. The first portion is fed to a nitrogen stripper column, operating at a stripping pressure, from which a nitrogenstripped liquid is drawn. The second portion is fed into the nitrogen-stripped liquid or in a liquid hydrocarbon product stream or in a process vapour which are produced from the nitrogen-stripped liquid involving at least a step of depressurizing the nitrogen-stripped liquid to a flash pressure that is lower than the stripping pressure. The second portion bypasses the nitrogen stripper column between the stream splitting and the feeding of the second portion into the nitrogen-stripped liquid or the liquid hydrocarbon product stream or the process vapour.

Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition

Nitrogen is removed from a cryogenic hydrocarbon composition comprising nitrogen and a methane-containing liquid phase. A by-product vapour from the cryogenic hydrocarbon composition, at a low pressure of between and 2 bar absolute, is compressed to a separation pressure in the range of between 2 and 15 bar absolute. The such compressed vapour is partially liquefied by heat exchanging the compressed vapour against an auxiliary refrigerant stream and thereby passing heat from the compressed vapour to the auxiliary refrigerant stream at a cooling duty. The condensed fraction of the partially liquefied compressed vapour is depressurized and at least a portion of it is reinjected into the cryogenic hydrocarbon composition. An off gas consisting of a, non condensed, vapour fraction of the partially liquefied compressed vapour is discharged from the first gas/liquid separator. The cooling duty is adjusted to regulate a heating value of the vapour fraction being discharged.

Method and device for liquefying natural gas

FIELD: gas industry. SUBSTANCE: method comprises liquefying natural gas with the plant that has two or more dependent devices made of members connected in series. The gas flows through at lest one of dependent devices for primary cooling by means of heat exchange with the first cooling agent and further cooling down to the cryogenic temperature by means of heat exchange of preliminary cooled gas with the second cooling agent. The first cooling agent is supplied to the dependent devices from the members connected in series from the common first compression. The second cooling agent is supplied to the dependent devices from the members connected in series from the common second compression section. EFFECT: reduced cost of liquefying. 16 cl, 2 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 301 384 (13) C2 (51) ÌÏÊ F25J 1/02 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004126223/06, 29.01.2003 (72) Àâòîð(û): ÔÝÍÍÈÍà Ðîáåðò À. (US), ÄÝÂÈÑ Êèíèñ Ý. (US), ÊÀÓ×ÅÐ Äæåéìñ Ý. (US) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 29.01.2003 (73) Ïàòåíòîîáëàäàòåëü(è): ÝÊÑÎÍÌÎÁÈË ÀÏÑÒÐÈÌ ÐÈÑÅÐ× ÊÎÌÏÀÍÈ (US) (43) Äàòà ïóáëèêàöèè çà âêè: 27.04.2005 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 28.01.2003 (ïï.1-14) US 10/352,441 (45) Îïóáëèêîâàíî: 20.06.2007 Áþë. ¹ 17 2 3 0 1 3 8 4 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: RU 2148761 C1, 10.05.2000. RU 2144649 C1, 20.01.2000. SU 1627097 A3, 07.02.1991. US 4970867 A, 20.11.1990. US 6016665 À, 25.01.2000. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 30.08.2004 2 3 0 1 3 8 4 R U (87) Ïóáëèêàöè PCT: WO 03/064947 (07.08.2003) C 2 C 2 (86) Çà âêà PCT: US 03/02497 (29.01.2003) Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Ñ.À.Äîðîôååâó (54) ÑÏÎÑÎÁ È ÓÑÒÀÍÎÂÊÀ ÄËß ÑÆÈÆÅÍÈß ÏÐÈÐÎÄÍÎÃÎ ÃÀÇÀ (57) Ðåôåðàò: Ñïîñîá äë ñæèæåíè ïðèðîäíîãî ãàçà â óñòàíîâêå, ñîäåðæàùåé äâà èëè ...

METHOD AND DEVICE FOR REMOVING NITROGEN FROM CRYOGENIC HYDROCARBON COMPOSITION

1. Способ удаления азота из криогенной углеводородной композиции, содержащей азот- и метансодержащую жидкую фазу, который включает:- обеспечение криогенной углеводородной композиции, содержащей азот- и метансодержащую жидкую фазу;- подачу первого потока сырья десорбера азота при давлении десорбции в колонну десорбции азота, содержащую по меньшей мере одну внутреннюю десорбционную секцию, расположенную внутри колонны десорбции азота, причем указанный первый поток сырья десорбера азота содержит первую часть указанной криогенной углеводородной композиции;- отведение обедненной азотом жидкости из области сборника колонны десорбции азота, расположенной под десорбционной секцией;- получение по меньшей мере потока жидкого углеводородного продукта и технологического пара из обедненной азотом жидкости, включающее по меньшей мере стадию сброса давления обедненной азотом жидкости до давления мгновенного испарения, которое ниже, чем давление десорбции;- сжатие указанного технологического пара до по меньшей мере давления десорбции, тем самым получая сжатый пар;- пропускание потока десорбирующего пара в колонну десорбции азота на уровне, находящемся ниже по вертикали от указанной десорбционной секции, причем указанный поток десорбирующего пара содержит по меньшей мере десорбирующую часть указанного сжатого пара;- отведение паровой фракции, содержащей отводимую фракцию пара головного погона, полученную из головной части колонны десорбции азота, в виде отходящего газа;- деление потока криогенной углеводородной композиции на указанную первую часть и вторую часть, имеющую тот же самый состав и фазу, что и первая часть;- сброс да РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F25J 3/02 (11) (13) 2014 128 650 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014128650, 10.12.2012 (71) Заявитель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: 12.12.2011 EP 11192921.2 (85) Дата начала ...

SYSTEM AND METHOD FOR PRODUCING LIQUID HYDROCARBON FLOWS AND COMPRESSOR OPERATION METHOD

1. Способ производства потока сжиженных углеводородов, включающий:циркуляцию хладагента через контур циркуляции хладагента, включающую сжатие, по меньшей мере, части хладагента в холодильном компрессоре, приводимом в действие с помощью электродвигателя, при этом холодильный компрессор содержит регулируемые входные направляющие лопатки, угол поворота которых является регулируемым по отношению к исходному положению;отвод теплоты от первоначально парообразного потока углеводородов с конденсацией тем самым, по меньшей мере, части первоначально парообразного потока углеводородов для образования потока сжиженных углеводородов, причем отвод теплоты включает теплообмен между, по меньшей мере, частью первоначально парообразного потока углеводородов и, по меньшей мере, частью хладагента, циркулирующего по контуру циркуляции хладагента;подвод электроэнергии к электродвигателю от электрической сети;контроль сигнала, характеризующего состояние электросети;автоматическое определение по указанному сигналу, существует ли необходимость дополнительного снижения нагрузки по результатам сравнения полученного сигнала с предварительно заданным критерием;автоматическое регулирование угла поворота регулируемых входных направляющих лопаток с уменьшением тем самым нагрузки холодильного компрессора, если критерий удовлетворяется и необходимо дополнительное снижение нагрузки.2. Способ по п. 1, который дополнительно включает поддержание регулируемых входных направляющих лопаток под оптимальным заданным углом для оптимизации эффективности работы и/или рабочего диапазона холодильного компрессора, если критери РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F25J 1/00 (11) (13) 2014 128 901 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014128901, 13.12.2012 (71) Заявитель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: 15.12.2011 EP 11193688.6 (85) Дата начала рассмотрения заявки PCT на национальной ...

Liquifying method and system

使用闭环制冷系统液化进料气体，其中使冷却的压缩气态制冷剂流(150)膨胀(136)以提供第一膨胀气态制冷剂流(154)，第一膨胀气态制冷剂流(154)基本上为蒸汽且用于通过间接热交换(110)来冷却且基本上液化进料气流(100)。基本上液化的进料气流(102)优选地通过与第二膨胀气态制冷剂流(172)间接热交换(112)而过冷，第二膨胀气态制冷剂流(172)优选地也基本上为蒸汽且可由冷却的压缩气态制冷剂流(170)或者由第一膨胀气态制冷剂流(152)的一部分提供。用于压缩气态制冷剂流(146)的冷却负荷由第一膨胀气态制冷剂流(152)的一部分（160）、通过与进料气体进行所述热交换(110)而部分地温热的气态制冷剂(156)和/或通过所述过冷(112)而温热的第二膨胀气态制冷剂流(174)提供。

Natural gas liquefaction plant

System and method for liquid air production, power storage and power release

본 발명은 유입 공기를 수직방향의 냉각관 조립체 안으로 유입되도록 유도하는 단계와, 공기를 냉각하고 수분 부분을 제거하는 단계를 포함하는 에너지 저장 및 방출 시스템 및 장치에 관한 것이다. 상기 공기는 상기 냉각관 조립체로부터 밖으로 향하여 압축된다. 남아있는 수분은 실질적으로 제거된다. 상기 공기는 냉매 루프 공기를 사용하여 실질적으로 액화되도록 주 열교환기에서 냉각된다. 상기 실질적으로 액화된 공기는 저장 장치로 향한다. 에너지 방출 모드에서, 작동 루프 공기는 상기 방출된 액체 공기가 실질적으로 증발되도록 방출된 액체 공기를 가온시키고, 상기 방출된 액체 공기는 상기 작동 루프 공기가 실질적으로 액화되도록 상기 작동 루프 공기를 냉각시킨다. 상기 실질적으로 증발된 공기는 연소실로 향하여 연소 흐름에 의하여 연소된다. 팽창된 연소가스의 일부는 상기 방출된 액체 공기를 가열하여 실질적으로 증발시키는데 사용될 수 있다.

Boil-off gas reliquefaction installation

本发明提供一种蒸发气体再液化装置，减小热负荷且制成小型且高效率的冷冻循环部，且对设备的配置进行设计，即使在现有的LNG船中也可以设置。一种蒸发气体再液化装置(1)，其具有：液化处理部(5)，该液化处理部具有BOG供给配管(35)、燃料用压缩机(33)、BOG输送配管(39)；冷冻循环部(3)，其具有凝缩部(17)，该凝缩部(17)将来自制冷剂压缩机(9)的制冷剂通过膨胀器(13)进一步降温，冷却通过BOG输送配管(39)的BOG，其中，在液化处理部(5)具备BOG预冷却器(57)，该BOG预冷却器(57)在凝缩部(17)的上游侧在通过BOG输送配管(39)的BOG和通过BOG供给配管(35)的BOG间进行热交换，在冷冻循环部(3)具备：在凝缩部(17)的下游侧通过膨胀器(13)驱动的增压压缩机(19)和冷却来自增压压缩机(19)的制冷剂的第二后冷却器(29)。

Method and device for cooling and liquefaction of hydrocarbon flow

FIELD: machine building. SUBSTANCE: method for bringing into action of two or more compressors for cooling agent during hydrocarbon cooling process. In such a hydrocarbon cooling process the initial hydrocarbon flow can be passed in a counterflow with partially evaporated cooling agent flows. At least partially evaporated above cooling agent flows are compressed in cooling agent compressors. In order to obtain electric energy and hot gas, one ore more gas turbines are brought into action. Hot gas is passed through one or more steam generating heat exchangers so that water vapour energy is obtained, which is used to bring into action one or more steam turbines bringing into action at least one of the cooling agent compressors. Electric energy is used for bringing at least the other one cooling agent compressor into action. EFFECT: higher safety. 16 cl, 4 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 503 900 (13) C2 (51) МПК F25J 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010122953/06, 05.11.2008 (24) Дата начала отсчета срока действия патента: 05.11.2008 (73) Патентообладатель(и): ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) (43) Дата публикации заявки: 20.12.2011 Бюл. № 35 2 5 0 3 9 0 0 (45) Опубликовано: 10.01.2014 Бюл. № 1 (56) Список документов, цитированных в отчете о поиске: US 6640586 B1, 04.11.2003. US 2004/129020 A1, 08.07.2004. US 3161492 A, 15.12.1964. RU 2141084 C1, 10.11.1999. RU 2300061 C2, 27.05.2007. US 5025860 A, 25.06.1991. 2 5 0 3 9 0 0 R U (86) Заявка PCT: EP 2008/064973 (05.11.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 07.06.2010 (87) Публикация заявки РСТ: WO 2009/059985 (14.05.2009) Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент", пат.пов. Ю.В. Пинчуку, рег.№ 656 (54) СПОСОБ И УСТРОЙСТВО ДЛЯ ОХЛАЖДЕНИЯ И СЖИЖЕНИЯ ПОТОКА УГЛЕВОДОРОДОВ (57) Реферат: Способ привода в действие двух или большего количества ...

Method of operating a compressor and an apparatus therefor

본 발명은 출구 폐색 현상 중에 릴리프 부하를 감소시키기 위하여 압축기 (100) 을 구동시키는 방법 및 상기 방법을 위한 장치를 제공한다. 상기 방법은 적어도, (a) 압축기 공급 밸브 (12, 22, 32, 42) 를 통과하는 하나 이상의 압축기 공급 흐름 (10, 20, 30, 40) 을 제 1 압축기 (100) 의 하나 이상의 입구부 (18, 28, 38, 48) 로 통과시키는 단계; (b) 제 1 압축기 (100) 에서 하나 이상의 압축기 공급 흐름 (10, 20, 30, 40) 을 압축하여 제 1 압축기 (100) 의 출구부 (105) 에서 압축된 배출 흐름 (150) 을 제공하는 단계; (c) 제 1 압축기 (100) 의 출구 폐색 현상에 대한 제 1 지표를 모니터링하는 단계; 및 (d) 제 1 압축기 (100) 의 출구 폐색 현상에 대한 제 1 지표가 검출되었을 때 압축기 공급 밸브 (12, 22, 32, 42) 의 차단을 지시하는 단계를 포함한다. The present invention provides a method of driving the compressor (100) and an apparatus for the method to reduce the relief load during exit clogging. The method comprises, at least, (a) one or more compressor feed streams 10, 20, 30, 40 through compressor feed valves 12, 22, 32, 42 to one or more inlet sections 18, 28, 38 , 48); (b) compressing one or more compressor feed streams (10,20, 30,40) in a first compressor (100) to provide a compressed exhaust stream (150) at an outlet (105) of a first compressor step; (c) monitoring a first indicator of an outlet clogging of the first compressor (100); And (d) instructing to shut off the compressor supply valves (12, 22, 32, 42) when a first indicator of the outlet clogging of the first compressor (100) is detected.

Natural gas liquefaction plant

FIELD: liquefaction of natural gas. SUBSTANCE: the plant has the main heat exchanger, in which natural gas is liquefied by an indirect heat exchange with an evaporating refrigerant agent, and a refrigerant agent contour, in which the evaporated refrigerant agent is compressed and liquefied so as to obtain a liquefied agent, that is used in the main heat exchanger. The refrigerant agent contour includes a series of compressors, in which at least one compressor operates only from an electric motor. EFFECT: enhanced efficiency. 6 cl, 2 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 289 770 (13) C2 (51) ÌÏÊ F25J 1/02 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2002117309/06, 29.11.2000 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 29.11.2000 (72) Àâòîð(û): ÐÅÈÉÍÅÍ Äóíêàí Ïåòåð Ìèõàýë (NL), ÐÓÍÁÀËÊ Äàâèä Áåðòèë (NL) (43) Äàòà ïóáëèêàöèè çà âêè: 10.02.2004 R U (73) Ïàòåíòîîáëàäàòåëü(è): ØÅËË ÈÍÒÅÐÍÝØÍË ÐÈÑÅÐ× ÌÀÀÒÑÕÀÏÏÈÉ Á.Â. (NL) (30) Êîíâåíöèîííûé ïðèîðèòåò: 01.12.1999 (ïï.1-5) EP 99204067.5 (45) Îïóáëèêîâàíî: 20.12.2006 Áþë. ¹ 35 2 2 8 9 7 7 0 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: US 5689141 À, 18.11.1997. RU 2141084 C1, 10.11.1999. GB 2065284 A, 24.06.1981. WO 9930094 À, 17.06.1999. US 4566885 À, 28.06.1986. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 01.07.2002 Àäðåñ äë ïåðåïèñêè: 103735, Ìîñêâà, óë. Èëüèíêà, 5/2, ÎÎÎ "Ñîþçïàòåíò", ïàò.ïîâ. Î.Ô.Èâàíîâîé, ðåã. ¹ 331 (54) ÓÑÒÀÍÎÂÊÀ ÄËß ÑÆÈÆÅÍÈß ÏÐÈÐÎÄÍÎÃÎ ÃÀÇÀ (57) Ðåôåðàò: Óñòàíîâêà, ïðåäíàçíà÷åííà äë ñæèæåíè ïðèðîäíîãî ãàçà, ñîäåðæèò îñíîâíîé òåïëîîáìåííèê, â êîòîðîì ïðèðîäíûé ãàç ñæèæàþò ïóòåì êîñâåííîãî òåïëîîáìåíà ñ èñïàð þùèìñ õëàäàãåíòîì, è êîíòóð õëàäàãåíòà, â êîòîðîì èñïàðèâøèéñ õëàäàãåíò ñæèìàþò è ñæèæàþò äë ïîëó÷åíè ñæèæåííîãî õëàäàãåíòà, êîòîðûé èñïîëüçóþò â îñíîâíîì òåïëîîáìåííèêå. Êîíòóð õëàäàãåíòà âêëþ÷àåò ïîñëåäîâàòåëüíîñòü êîìïðåññîðîâ, â êîòîðîé, ïî ìåíüøåé ìåðå, îäèí êîìïðåññîð ...

Method and apparatus for liquefying natural gas stream

【課題】天然ガス流を液化する装置及び方法を提供すること。 【解決手段】該方法は、液化のための脱水された天然ガス流を供給する工程、該脱水された天然ガス流を予冷装置で予冷する工程であって、該予冷をハイドロフルオロカーボン（ＨＦＣ）冷媒から本質的になる予冷冷却剤を用いて行う予冷工程、該予冷された脱水された天然ガス流を主熱交換器において気化される炭化水素混合冷媒冷却剤との間接的熱交換によって更に冷却して液化した天然ガス製品流を製造する工程を含み、該混合冷媒冷却剤はエタン、メタン、窒素、及び３モル％以下のプロパンを含む。 【選択図】図１

Refrigeration device and installation

Dispositif de réfrigération à basse température comprenant un circuit de travail (10) formant une boucle et contenant un fluide de travail, le circuit (10) de travail formant un cycle comprenant en série: un mécanisme (2, 3) de compression, un mécanisme (4, 5, 6) de refroidissement, un mécanisme (7) de détente et un mécanisme (6, 8) de réchauffement, le dispositif (1) comprenant un échangeur (8) de chaleur de réfrigération destiné à extraire de la chaleur à au moins un organe (125) par échange de chaleur avec le fluide de travail circulant dans le circuit (10) de travail, le mécanisme (2, 3) de compression comprenant deux compresseurs (2, 3) distincts, le mécanisme (4, 5, 6) de refroidissement du fluide de travail comprenant deux échangeurs (4, 5) de chaleur de refroidissement disposés respectivement à la sortie des deux compresseurs (2, 3) et assurant un échange de chaleur entre le fluide de travail et un fluide de refroidissement, chaque échangeur (4, 5 ) de chaleur de refroidissement comprenant une entrée (24, 25) de fluide de refroidissement et une sortie (34, 35) de fluide de refroidissement, caractérisé en ce que la sortie (34, 35) de fluide de refroidissement de l’un des deux échangeur (4, 5) de chaleur de refroidissement est raccordée à l’entrée (25, 24) de fluide de refroidissement de l’autre échangeur (5) de chaleur de refroidissement. Figure de l’abrégé : Fig. 1 A low temperature refrigeration device comprising a working circuit (10) forming a loop and containing a working fluid, the working circuit (10) forming a cycle comprising in series: a compression mechanism (2, 3), a (4, 5, 6), an expansion mechanism (7) and a heating mechanism (6, 8), the device (1) comprising a refrigeration heat exchanger (8) intended to extract heat from at least one member (125) by heat exchange with the working fluid circulating in the working circuit (10), the compression mechanism (2, 3) comprising two separate compressors (2, 3), the mechanism (4, 5, 6) for cooling the ...

NATURAL GAS LIQUEFACTION SYSTEM PROVIDED ON SURFACE OF A WATER EXTEND, AND ASSOCIATED COOLING METHOD

L'installation (10) comporte : - au moins un échangeur thermique refroidi à l'air (22), l'échangeur thermique refroidi à l'air (22) comportant un faisceau de tubes propre à recevoir un flux à refroidir (24) et un ventilateur, propre à faire circuler un flux d'air à travers le faisceau de tubes ; - un ensemble de projection (26) d'eau. L'ensemble de dessalement (20) comporte une prise de prélèvement d'eau salée (100) dans l'étendue d'eau (12), l'ensemble de dessalement (20) étant raccordé en aval à l'ensemble de projection (26) d'eau. L'ensemble de projection (26) d'eau comporte au moins une buse de projection débouchant dans le faisceau de tubes, la ou chaque buse de projection étant dirigée vers les tubes du faisceau de tubes pour projeter de l'eau déminéralisée liquide provenant de l'ensemble de dessalement (20) au contact des tubes du faisceau de tubes. The installation (10) comprises: - at least one air-cooled heat exchanger (22), the air-cooled heat exchanger (22) comprising a bundle of tubes capable of receiving a stream to be cooled (24) and a fan adapted to circulate a flow of air through the bundle of tubes; - A projection assembly (26) of water. The desalination unit (20) has a salt water sampling plug (100) in the water body (12), the desalination unit (20) being connected downstream to the projection assembly ( 26) of water. The water projection assembly (26) comprises at least one projection nozzle opening into the bundle of tubes, the or each projection nozzle being directed towards the tubes of the tube bundle to project liquid demineralized water from the desalination unit (20) in contact with the tubes of the bundle of tubes.

System and method for the production of liquefied natural gas

A system and method for producing liquefied natural gas are provided. The method may include compressing a process stream containing natural gas in a compression assembly to produce a compressed process stream. The method may also include removing non-hydrocarbons from the compressed process stream in a separator, and cooling the compressed process stream with a cooling assembly to thereby produce a cooled, compressed process stream containing natural gas in a supercritical state. The method may further include expanding a first portion and a second portion of the natural gas from the cooled, compressed process stream in a first expansion element and a second expansion element to generate a first refrigeration stream and a second refrigeration stream, respectively. The method may further include cooling the natural gas in the cooled, compressed process stream to a supercritical state with the first and second refrigeration streams thereby produce the liquefied natural gas.

PROCESS FOR PARTIAL LIQUEFACTION OF A HYDROCARBON CONTAINING FLUID SUCH AS NATURAL GAS

Procédé de liquéfaction partielle d'un fluide G formé au moins en partie d'hydrocarbures, produisant simultanément :. une fraction liquide après détente. une fraction gazeuse représentant au moins 10 % poids, qui pourra être soit réinjectée, soit utilisée pour produire de l'électricité.. et comportant au moins deux étapes de réfrigération au cours desquelles : - dans la première étape a) on refroidit le fluide G essentiellement gazeux à l'aide d'un réfrigérant externe M pour qu'à l'issue de cette première étape il soit au moins partiellement liquide à la pression opératoire et - dans la deuxième étape b) on termine si nécessaire la liquéfaction dudit fluide G et on sous refroidit ledit fluide G, à l'aide d'une partie du même fluide G, ladite partie étant ainsi détendue et vaporisée de manière à produire le froid nécessaire pour récupérer l'autre partie dudit fluide G totalement liquide à la pression du stockage. Process for the partial liquefaction of a fluid G formed at least in part of hydrocarbons, simultaneously producing:. a liquid fraction after expansion. a gaseous fraction representing at least 10% by weight, which can either be reinjected or used to produce electricity. and comprising at least two refrigeration stages during which: - in the first stage a) the fluid G is cooled essentially gaseous using an external coolant M so that at the end of this first step it is at least partially liquid at the operating pressure and - in the second step b) the liquefaction of said fluid G is terminated if necessary and said fluid G is sub-cooled, using a part of the same fluid G, said part being thus relaxed and vaporized so as to produce the cold necessary to recover the other part of said fluid G totally liquid at the pressure of the storage.

Refrigeration device and system

Disclosed is a low-temperature refrigeration device comprising a working circuit (10) that forms a loop and contains a working fluid, the working circuit (10) forming a cycle which includes, connected in series: a compression mechanism (2, 3), a cooling mechanism (4, 5, 6), an expansion mechanism (7) and a heating mechanism (6, 8), the device (1) further comprising a refrigeration heat exchanger (8) for extracting heat from at least one member (125) by exchanging heat with the working fluid flowing in the working circuit (10), the compression mechanism (2, 3) comprising two separate compressors (2, 3), the mechanism (4, 5, 6) for cooling the working fluid comprising two cooling heat exchangers (4, 5) which are arranged respectively at the outlet of the two compressors (2, 3) and ensure heat exchange between the working fluid and a cooling fluid, each cooling heat exchanger (4, 5 ) comprising a cooling fluid inlet (24, 25) and a cooling fluid outlet (34, 35), characterized in that the cooling fluid outlet (34, 35) of one of the two cooling heat exchangers (4, 5) is connected to the cooling fluid inlet (25, 24) of the other cooling heat exchanger (5).

NATURAL GAS LIQUEFACTION SYSTEM PROVIDED ON SURFACE OF A WATER EXTEND, AND ASSOCIATED COOLING METHOD

L'installation (10) comporte : - au moins un échangeur thermique refroidi à l'air (22), l'échangeur thermique refroidi à l'air (22) comportant un faisceau de tubes propre à recevoir un flux à refroidir (24) et un ventilateur, propre à faire circuler un flux d'air à travers le faisceau de tubes ; - un ensemble de projection (26) d'eau. L'ensemble de dessalement (20) comporte une prise de prélèvement d'eau salée (100) dans l'étendue d'eau (12), l'ensemble de dessalement (20) étant raccordé en aval à l'ensemble de projection (26) d'eau. L'ensemble de projection (26) d'eau comporte au moins une buse de projection débouchant dans le faisceau de tubes, la ou chaque buse de projection étant dirigée vers les tubes du faisceau de tubes pour projeter de l'eau déminéralisée liquide provenant de l'ensemble de dessalement (20) au contact des tubes du faisceau de tubes. The installation (10) comprises: - at least one air-cooled heat exchanger (22), the air-cooled heat exchanger (22) comprising a bundle of tubes capable of receiving a stream to be cooled (24) and a fan, adapted to circulate a flow of air through the bundle of tubes; - A projection assembly (26) of water. The desalination unit (20) has a salt water sampling plug (100) in the water body (12), the desalination unit (20) being connected downstream to the projection assembly ( 26) of water. The water projection assembly (26) comprises at least one projection nozzle opening into the bundle of tubes, the or each projection nozzle being directed towards the tubes of the tube bundle to project liquid demineralized water from the desalination unit (20) in contact with the tubes of the bundle of tubes.

Device and method for liquefying a fluid such as hydrogen and/or helium

Dispositif de liquéfaction d’un fluide comprenant un circuit (3) de fluide à refroidir, le dispositif (1) comprenant un ensemble d’échangeur(s) (6, 7, 8, 9, 10, 11, 12, 13) de chaleur en échange thermique avec le circuit (3) de fluide à refroidir, au moins un premier système (20) de refroidissement en échange thermique avec au moins une partie de l’ensemble d’échangeur(s) (6, 7, 8, 9, 10, 11, 12, 13) de chaleur, le premier système (20) de refroidissement étant un réfrigérateur à cycle de réfrigération d’un gaz de cycle comprenant majoritairement de l’hélium, ledit le réfrigérateur (20) comprenant, disposés en série dans un circuit (14) de cycle : un mécanisme (15) de compression du gaz de cycle, au moins un organe (16, 5, 6, 8, 10, 12) de refroidissement du gaz de cycle, un mécanisme (17) de détente du gaz de cycle et au moins un organe (13, 12, 11, 10, 9, 8, 7, 6, 5) de réchauffage du gaz de cycle détendu, dans lequel le mécanisme de compression comprend au moins quatre étages de compression (15) en série composés d’un ensemble de compresseur(s) (15) de type centrifuge, les étages de compressions (15) étant monté sur des arbres (19, 190) entraînés en rotation par un ensemble de moteur(s) (18), le mécanisme de détente comprenant au moins trois étages de détente en série composés d’un ensemble de turbines (17) de type centripète, le au moins un organe (16, 5, 6, 8, 10, 12) de refroidissement du gaz de cycle étant configuré pour refroidir le gaz de cycle à la sortie de l’une au moins des turbines (17) et dans lequel au moins une des turbines (17) est accouplée au même arbre (19) qu’au moins un étage de compression (15) de façon à fournir à l’étage de compression (15) du travail mécanique produit lors de la détente. Figure de l’abrégé: Fig. 1 Device for liquefying a fluid comprising a circuit (3) of fluid to be cooled, the device (1) comprising a set of heat exchanger(s) (6, 7, 8, 9, 10, 11, 12, 13) heat in heat exchange with the fluid circuit (3) to be cooled, at ...

Liquefaction method and system

A feed gas is liquefied using a closed loop refrigeration system in which a cooled compressed gaseous refrigerant stream (150) is expanded (136) to provide a first expanded gaseous refrigerant stream (154) that is substantially vapor and is used to cool and substantially liquefy a feed gas stream (100) through indirect heat exchange (110). The substantially liquefied feed gas stream (102) preferably is subcooled through indirect heat exchange (112) against a second expanded gaseous refrigerant stream (172) that preferably also is substantially vapor and can be provided by a cooled compressed gaseous refrigerant stream (170) or by a portion of the first expanded gaseous refrigerant stream (152). Cooling duty for the compressed gaseous refrigerant stream (146) is provided by a portion (160) of the first expanded gaseous refrigerant stream (152), gaseous refrigerant (156) partially warmed by said heat exchange (110) against feed gas, and/or second expanded gaseous refrigerant stream (174) warmed by said subcooling (112).

NATURAL GAS PURIFICATION AND LIQUEFACTION INSTALLATION AND METHOD

Installation et procédé d'épuration et de liquéfaction de gaz naturel comprenant disposés en série, une unité (3) de purification par adsorption, une unité (4) de séparation d'hydrocarbure(s) par réfrigération, et un liquéfacteur (5), l'unité (3) de purification par adsorption comprenant une entrée (2), une première sortie (6) de gaz purifié raccordée à une entrée de l'unité (4) de séparation d'hydrocarbure(s) par réfrigération, une seconde sortie (7) de gaz effluents produits lors de la purification, l'unité (4) comprenant une première sortie (8) de gaz purifié raccordée à une entrée du liquéfacteur (5) et une seconde sortie (9) de gaz effluents, l'installation comprenant une centrale (10) à gaz de production combinée de chaleur et d'électricité par combustion d'hydrocarbure comprenant une entrée (12) raccordée à la seconde sortie (7) de l'unité (3) et à la seconde sortie (9) de l'une unité (4), l'installation comprenant au moins un organe électrique, la centrale (10) étant reliée électriquement à au moins l'un du ou des organes (11, 5, 17, 3) électriques pour fournir à ces dernier de l'énergie électrique. Installation and method for purifying and liquefying natural gas comprising, arranged in series, a unit (3) for purification by adsorption, a unit (4) for separating hydrocarbon (s) by refrigeration, and a liquefier (5), the unit (3) for adsorption purification comprising an inlet (2), a first outlet (6) of purified gas connected to an inlet of the unit (4) for separating hydrocarbon (s) by refrigeration, a second outlet (7) of effluent gases produced during purification, the unit (4) comprising a first outlet (8) of purified gas connected to an inlet of the liquefier (5) and a second outlet (9) of effluent gases, l installation comprising a gas power plant for the combined production of heat and electricity by combustion of hydrocarbon comprising an inlet (12) connected to the second outlet (7) of the unit ...

NATURAL GAS LIQUID METHOD

А 2016105466 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) 11 3 << < < Хх << < < << <® 13 ВО ‘’ 2016 105 466 А (50) МПК Е257 1000 (2006.01) Е25В 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016105466, 18.02.2016 (71) Заявитель(и): ЛИНДЕ АКЦИЕНГЕЗЕЛЛЬШАФТ (ОЕ) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): 19.02.2015 РЕ 102015002164.8 БАУЭР, Хайнц (ОЕ) (43) Дата публикации заявки: 21.08.2017 Бюл. № 24 Адрес для переписки: 129090, Москва, ул. Большая Спасская, д. 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) СПОСОБ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА (57) Формула изобретения 1. Способ сжижения обогащенной углеводородами фракции, в частности природного газа, причем - обогащенную углеводородами фракцию охлаждают и сжижают по меньшей мере в двух холодильных циклах, - каждый холодильный цикл имеет по меньшей мере один циркуляционный компрессор, и - наиболее холодный холодильный цикл имеет два последовательно подключенных циркуляционных компрессора, а именно один циркуляционный компрессор низкого давления и один циркуляционный компрессор высокого давления, отличающийся тем, что - за исключением циркуляционного компрессора (С4, С4”) высокого давления в наиболее холодном холодильном цикле применяют циркуляционные компрессоры (С1- СЗ, СГ-СЗ?) с одинаковым числом оборотов, - циркуляционные компрессоры (С1-СЗ, СТ’-СЗ?) с одинаковым числом оборотов имеют привод только от одной газовой турбины (СТ), - причем газовая турбина (СТ) поставляет по меньшей мере 70%, предпочтительно по меньшей мере 75% требуемой общей приводной мощности всех циркуляционных компрессоров (С1-С4, СГ-С4?), и - циркуляционный компрессор (С4, С4’) высокого давления в наиболее холодном холодильном цикле имеет привод от электрического двигателя (М2) или паровой турбины. 2. Способ по п.1, отличающийся тем, что между циркуляционными компрессорами (С1-СЗ, СР-СЗ’), имеющими привод от газовой турбины (СТ), и между этими циркуляционными ...

Device and method for liquefying a fluid such as hydrogen and/or helium

Disclosed is a device for liquefying a fluid, comprising a circuit (3) for fluid to be cooled, the device (1) comprising a set of one or more heat exchangers (6, 7, 8, 9, 10, 11, 12, 13) exchanging heat with the circuit (3) of fluid to be cooled, at least one first cooling system (20) exchanging heat with at least some of the set of one or more heat exchangers (6, 7, 8, 9, 10, 11, 12, 13), the first cooling system (20) being a refrigerator with refrigeration cycle of a cycle gas mostly comprising helium, the refrigerator (20) comprising, arranged in series in a cycle circuit (14): a cycle gas compression mechanism (15), at least one cycle gas cooling member (16, 5, 6, 8, 10, 12), a mechanism (17) for expansion of the cycle gas and at least one expanded cycle gas heating member (13, 12, 11, 10, 9, 8, 7, 6, 5), wherein the compression mechanism comprises at least four compression stages (15) in series, consisting of a set of one or more centrifuge-type compressors (15), the compression stages (15) being mounted on shafts (19, 190) rotated by a set of one or more motors (18), the expansion mechanism comprising at least three expansion stages in series, consisting of a set of centripetal turbines (17), the at least one cycle gas cooling member (16, 5, 6, 8, 10, 12) being configured to cool the cycle gas at the outlet of at least one of the turbines (17) and wherein at least one of the turbines (17) is coupled to the same shaft (19) as at least one compression stage (15) so as to supply the compression stage (15) with the mechanical work produced during the expansion.

Refrigeration device and installation

Dispositif de réfrigération à basse température comprenant un circuit de travail (10) formant une boucle et contenant un fluide de travail, le circuit (10) de travail formant un cycle comprenant en série: un mécanisme (2, 3) de compression, un mécanisme (4, 5, 6) de refroidissement, un mécanisme (7) de détente et un mécanisme (6, 8) de réchauffement, le dispositif (1) comprenant un échangeur (8) de chaleur de réfrigération destiné à extraire de la chaleur à au moins un organe (125) par échange de chaleur avec le fluide de travail circulant dans le circuit (10) de travail, le mécanisme (2, 3) de compression comprenant deux compresseurs (2, 3) distincts, le mécanisme (4, 5, 6) de refroidissement du fluide de travail comprenant deux échangeurs (4, 5) de chaleur de refroidissement disposés respectivement à la sortie des deux compresseurs (2, 3) et assurant un échange de chaleur entre le fluide de travail et un fluide de refroidissement, chaque échangeur (4, 5 ) de chaleur de refroidissement comprenant une entrée (24, 25) de fluide de refroidissement et une sortie (34, 35) de fluide de refroidissement, caractérisé en ce que la sortie (34, 35) de fluide de refroidissement de l’un des deux échangeur (4, 5) de chaleur de refroidissement est raccordée à l’entrée (25, 24) de fluide de refroidissement de l’autre échangeur (5) de chaleur de refroidissement. Figure de l’abrégé : Fig. 1 Low temperature refrigeration device comprising a working circuit (10) forming a loop and containing a working fluid, the working circuit (10) forming a cycle comprising in series: a compression mechanism (2, 3), a mechanism (4, 5, 6), an expansion mechanism (7) and a heating mechanism (6, 8), the device (1) comprising a refrigeration heat exchanger (8) for extracting heat to at least one member (125) by heat exchange with the working fluid circulating in the working circuit (10), the compression mechanism (2, 3) comprising two separate compressors (2, 3), the mechanism (4, 5, 6) for cooling the ...

Liquefied natural gas producing method for power plant, involves transporting processed natural gas until offshore installation, cooling and liquefying gas in offshore installation, and storing liquefied natural gas in offshore installation

The method involves processing natural gas in a ground installation (6) by drying the natural gas, where the natural gas is extracted from a deposit located in ground and sea, and transporting the processed natural gas until an offshore installation (1) through a processed natural gas conduit (5). The processed natural gas is cooled and liquefied in the offshore installation, and the liquefied natural gas is stored in the offshore installation. An independent claim is also included for a liquefied natural gas producing installation comprising a ground installation with a natural gas processing unit comprising a natural gas drying unit.

Integrated pressure regulator and motor compressor assembly and closed-loop cooling circuit comprising such an assembly

L’ensemble détendeur et moto compresseur intégrés (2) comprend une section de compression (9) montée entre les deux paliers radiaux (15, 16) sur un arbre de transmission (10), un détendeur (30) placé en porte-à-faux à une extrémité libre de l’arbre de transmission, un diffuseur de gaz (33) et une conduite (34) entre le détendeur et un premier palier radial (16), le premier palier radial étant le palier le plus proche du détendeur. Le diffuseur de gaz diffuse une barrière contre les gaz qui est aspirée par la conduite. Figure pour l’abrégé : Fig 1 The integrated expander and motor compressor assembly (2) comprises a compression section (9) mounted between the two radial bearings (15, 16) on a transmission shaft (10), an expander (30) placed side by side false at a free end of the transmission shaft, a gas diffuser (33) and a pipe (34) between the expander and a first radial bearing (16), the first radial bearing being the bearing closest to the expander. The gas diffuser diffuses a barrier against the gases which are sucked up by the pipe. Figure for the abstract: Fig 1

Patent FR2165729B1

Refrigeration device and installation and method for cooling and/or liquefaction

Dispositif de réfrigération à basse température comprenant un circuit de travail (10) formant une boucle et contenant un fluide de travail, le dispositif (1) comprenant un échangeur (8) de refroidissement destiné à extraire de la chaleur à au moins un organe (25) par échange de chaleur avec le fluide de travail, le circuit (10) de travail formant un cycle comprenant en série: un mécanisme (2, 3) de compression, un mécanisme (6) de refroidissement, un mécanisme (7) de détente et un mécanisme (6, 8) de réchauffement, dans lequel, le mécanisme de refroidissement du fluide de travail et le mécanisme de réchauffement comprennent un échangeur de chaleur (6) commun dans lequel le fluide de travail transite à contre-courant dans deux portions de transit distinctes du circuit selon qu'il est refroidi ou réchauffé, le dispositif (1) étant configuré pour assurer un débit massique égal dans lesdites deux portions de transit dans l’échangeur (6) de chaleur commun, le dispositif (1) comprenant une conduite (9) de dérivation d’une des deux portions de transit, ladite conduite (9) de dérivation comprenant une vanne (11) de dérivation qui, lorsqu’elle est ouverte, modifie le débit massique dans l’une des deux portions de transit Figure de l’abrégé : Fig. 2 Low temperature refrigeration device comprising a working circuit (10) forming a loop and containing a working fluid, the device (1) comprising a cooling exchanger (8) intended to extract heat from at least one member (25 ) by heat exchange with the working fluid, the working circuit (10) forming a cycle comprising in series: a compression mechanism (2, 3), a cooling mechanism (6), an expansion mechanism (7) and a heating mechanism (6, 8), in which the working fluid cooling mechanism and the heating mechanism comprise a common heat exchanger (6) in which the working fluid passes in countercurrent in two portions distinct transit portions of the circuit depending on whether it is cooled or heated, the device (1) being ...

Flexible liquefied natural gas plant

The present techniques are directed to a flexible liquefied natural gas (LNG) plant that may be tied to an external electric grid for importing or exporting electric power. Exemplary embodiments provide a method for producing LNG that includes producing a base load capacity of refrigeration capacity for LNG production from a first compression system. Electricity may be produced from a second compressor string if electricity is needed by an external power grid, or a second amount of refrigeration capacity may be provided by the second compressor string is natural gas feed is available and the external grid does not need power.

PRE-COOLED LICUATION PROCESS

REFERIDO A UN SISTEMA Y METODO DE LICUACION QUE UTILIZA UN HIDROFLUOR CARBURO PARA PREENFRIAR UNA CORRIENTE DE ALIMENTACION DE GAS NATURAL ANTES DE LICUAR A LA ALIMENTACION PREENFRIADA UTILIZANDO UN REFRIGERANTE MEZCLADO. DICHO METODO COMPRENDE LAS ETAPAS DE: i) PROPORCIONAR UNA CORRIENTE DE GAS NATURAL DESHIDRATADO EN UN APARATO DE PREENFRIAMIENTO; Y ii) ENFRIAR ADICIONALMENTE A LA CORRIENTE DE GAS NATURAL PREENFRIADO Y DESHIDRATADO EN UN PERMUTADOR TERMICO PRINCIPAL, A TRAVES DE PERMUTACION TERMICA INDIRECTA CONTRA UN REFRIGERANTE MEZCLADO CON HIDROCARBURO VAPORIZADO A FIN DE OBTENER UNA CORRIENTE DE GAS NATURAL LICUADO; EN EL CUAL EL REFRIGERANTE MEZCLADO COMPRENDE ETANO, METANO, NITROGENO Y UNA CANTIDAD MENOR O IGUAL A 3 MOLES POR CIENTO DE PROPANO. DICHO SISTEMA COMPRENDE: a) UN COMPRESOR DE VARIAS ETAPAS PARA HIDROFLUOR CARBURO; b) UN APARATO DE PREENFRIAMIENTO CONECTADO EN COMUNICACION DE FLUIDO CON EL COMPRESOR DE VARIAS ETAPAS PARA HIDROFLUOR CARBURO, DICHO APARATO DE PREENFRIAMIENTO COMPRENDE POR LO MENOS UN EVAPORADOR PARA PREENFRIAR UNA CORRIENTE DE GAS NATURAL DESHIDRATADO; Y c) UN PERMUTADOR TERMICO PRINCIPAL CONECTADO EN COMUNICACION DE FLUIDO CON UN APARATO DE PREENFRIAMIENTO PARA ENFRIAR ADICIONALMENTE A LA CORRIENTE DE GAS NATURAL PREENFRIADO Y DESHIDRATADO A FIN DE PRODUCIR UNA CORRIENTE DE GAS NATURAL LICUADO REFERRING TO A LIQUIDATION SYSTEM AND METHOD THAT USES A CARBIDE HYDROFLUOR TO PRECOOL A NATURAL GAS FEED STREAM BEFORE LIQUEFIED THE PRE-COOLED FEED USING A MIXED REFRIGERANT. SAID METHOD INCLUDES THE STAGES OF: i) PROVIDING A FLOW OF DEHYDRATED NATURAL GAS IN A PRECOOLING APPARATUS; AND ii) ADDITIONALLY COOLING TO THE PRE-COOLED AND DEHYDRATED NATURAL GAS CURRENT IN A MAIN THERMAL SWITCHER, THROUGH INDIRECT THERMAL PERMUTATION AGAINST A REFRIGERANT MIXED WITH VAPORIZED HYDROCARBON IN A CORRELATED LATERAL GATE; IN WHICH THE MIXED REFRIGERANT INCLUDES ETHANE, METHANE, NITROGEN AND A QUANTITY LESS THAN OR EQUAL TO 3 MOLS PERCENT OF PROPANE. ...

Multi-Compressor String With Multiple Variable Speed Fluid Drives

Starter arrangement for high power rotating equipment strings with multiple compressors driven by a single turbine or motor includes multiple variable fluid drive torque converters (CSTCs) to start the compressors in a pressurized start. The string can use a single CSTC for each compressor or a single CSTC for more than one compressor with at least two CSTCs for a given string. The starting procedure is sequential. After the turbine or motor is started and brought up to speed, successive CSTCs are operated from zero to lock-up speed sequentially to start each compressor or group of compressors in turn. In order to cool the working fluid of the CSTCs, a single heat exchanger is provided and the working fluid of each CSTC in turn is circulated through the heat exchanger as they are sequentially started. At lock-up speed, the CSTC is locked up, the working fluid is drained, and the working fluid of the active CSTC is isolated from the heat exchanger and the next succeeding CSTC in the start sequence is in turn, filled with the working fluid and connected to the heat exchanger. At full start, with all compressors operating at full speed, no working fluid is present in the CSTCs, and no working fluid is circulated through the heat exchangers from the locked-up CSTCs. A single heat exchanger may also be used for multiple strings, each having multiple CSTCs for multiple compressors. The starter arrangement is useful in high compressor load strings for LNG refrigeration service.

Refrigeration device and installation

Dispositif de réfrigération à basse température disposé dans un cadre (100) et comprenant un circuit de travail (10) formant une boucle et contenant un fluide de travail, le circuit (10) de travail formant un cycle comprenant en série: un mécanisme (2, 3) de compression, un mécanisme (4, 5, 6) de refroidissement, un mécanisme (7) de détente et un mécanisme (6, 8) de réchauffement, le dispositif (1) comprenant un échangeur (8) de chaleur de réfrigération destiné à extraire de la chaleur à au moins un organe (125) par échange de chaleur avec le fluide de travail, les mécanismes de refroidissement et de réchauffage du fluide de travail comprenant un échangeur (6) de chaleur commun dans lequel le fluide de travail transite à contre-courant dans deux portions de transit distinctes du circuit (10) de travail, le mécanisme de compression comprenant au moins deux compresseurs (2, 3) et au moins un moteur (14, 15) d’entraînement des compresseur (2, 3), le mécanisme de détente du fluide de travail comprenant au moins un turbine (7) rotative, le dispositif comprenant au moins un moteur (14, 15) d’entraînement comprenant un arbre d’entraînement dont une extrémité entraîne un compresseur (2) et dont une autre extrémité est accouplée à une turbine (7), ledit moteur (14) étant fixé au cadre (100) au niveau d’au moins un point (104) fixe, l’échangeur (6) de chaleur commun étant fixé au cadre (100) au niveau d’au moins un point (106) fixe, les deux portions de transit à contre-courant de l’échangeur (6) de chaleur commun étant orientées selon une direction (A) longitudinale du cadre (100), l’arbre d’entraînement dudit moteur (14, 15) d’entraînement étant orienté selon une direction parallèle ou sensiblement parallèle à la direction (A) longitudinale et la turbine (7) et le compresseur (2) sont agencés relativement longitudinalement de sorte que la turbine (7) est située longitudinalement du côté correspondant à l’extrémité relativement froide de échangeur (6) de chaleur commun ...

Method for starting and operating a plant for liquefaction of gas products

Integrally-geared compressors for precooling in lng applications

A natural gas liquefaction system is disclosed, which comprises at least a pre-cooling loop (103), through which a first refrigerant is adapted to circulate. The pre-cooling loop comprises at least one compressor (109) for pressurizing the first refrigerant; at least one prime mover (111) for driving the compressor (109); at least one condenser (115) for removing heat from the first refrigerant; at least a first expansion element (119A-119D) for expanding the first refrigerant; at least a first heat exchanger (123A-123D) for transferring heat from natural gas to the first refrigerant. The system further comprises at least a cooling loop (105), downstream of the pre-cooling loop, where through a second refrigerant circulates. The natural gas is adapted to be sequentially cooled in the pre-cooling loop and in the cooling loop. The compressor of the pre-cooling loop is an integrally-geared turbo-compressor comprising a plurality of compressor stages (109A-109D).

Variable speed drive system, method for operating a variable speed drive system and method for refrigerating a hydrocarbon stream

A variable speed drive system employing an electric motor and a frequency converter arranged between an AC power source and the electric motor is operated. The frequency converter functions to convert AC power obtained from the AC power source at a source frequency to converted power at a variable drive frequency. A mechanical assembly can be coupled to the electric motor. Electric modulation circuitry is provided interacting with the frequency converter. It is arranged to impose fluctuations, independently from any torsional excitation in the mechanical assembly and the AC power source, in the inter-harmonic frequencies of inter-harmonic currents generated in the frequency converter.

Method and system for the small-scale production of liquified natural gas (lng) and cold compressed gas (ccng) from low-pressure natural gas

A system for the production of LNG from low-pressure feed gas sources, at small production scales and at lower energy input costs. A system for the small- scale production of cold compressed natural gas (CCNG). A method of dispensing natural gas from stored CCNG, comprising: dispensing CCNG from a CCNG storage tank; pumping the CCNG by a cryogenic liquid pump to a pressure suitable for compressed natural gas dispensing and storage in on-vehicle compressed natural gas storage tanks; recovering cold from the CCNG by heat exchange with natural gas feeding the natural gas production plant to replace dispensed product. A system for the storage, transport, and dispensing of natural gas, comprising: means for handling natural gas in a CCNG state where the natural gas is a non-liquid, but is dense-enough to allow for pumping to pressure by a cryogenic liquid pump.

Patent JPH0240601B2

A system for producing liquefied product gas and method of operating the same

Invention relates a system (10) for producing liquefied product gas comprising atleast two compressors (12.1,12.2,12.3,12.4), at least two expanders (14.1, 14.2)and a system of heat exchangers (18) arranged to a closed single phase refrig-erant gas flow circuit (20), and a gas liquefaction passage arranged in connectionwith the system of heat exchangers (18) so as to liquefy the product gas,5wherein the least two compressors (12.1,12.2,12.3,12.4) are coupled in serieswith each other in the refrigerant circuit (20), andthe at least two expanders (14.1, 14.2) are coupled in parallel which each otherin the refrigerant circuit (20), and whereinthe compressors (12.1,12.2,12.3,12.4) and the expanders (14.1, 14.2) are me-10chanically coupled with each other by a drive system (16).

Dual end gear fluid drive starter

用于高功率旋转设备串的压缩机起动转矩转换器的方法和装置，所述高功率旋转设备串包括压缩机起动转矩转换器(CSTC)和传动装置，以使输入和输出速度符合在串末端的至少一个压缩机的速度和动力需求。该串还包括原动机，或是发动机或是具有起动器发动机的燃气涡轮。CSTC由原动机驱动，所述原动机已经调整至合适的速度以用于有效的动力传递，随后通过齿轮增速单元使CSTC的输出的速度增加以符合高速压缩机的必要需求。该传动装置可以是两个具有各自机壳的分离单元，或与CSTC并入单个机壳内。CSTC可以是在LNG制冷设施的高压缩机负载串的加压起动中使用的CSTC。

Method and apparatus for pressurizing a gas

A gas pressurization system comprising a gas inlet valve configured to receive an inlet gas stream. A clean-up system is coupled to the gas inlet valve. A recovery heat exchanger coupled to the clean-up system. The recovery heat exchanger is configured to remove thermal energy from the inlet gas stream and cool the inlet gas stream to one of a pre-cooled gas and liquid stream. An expander coupled to the recovery heat exchanger is configured to expand the pre-cooled liquid stream. A refrigeration unit coupled to the expander and configured to cool the expanded pre-cooled liquid stream to a liquid phase. A buffer storage unit is coupled to the refrigeration unit. A pump is coupled to the buffer storage unit at a pump suction and has a pump discharge coupled to the recovery heat exchanger. A high-pressure storage unit coupled to the pump discharge downstream of the recovery heat exchanger.

Process for producing liquid hydrogen

The invention relates to an integrated process for continuous production of liquid hydrogen, comprising (a) producing gaseous hydrogen by electrolysis; and (b) liquefying said gaseous hydrogen in a hydrogen liquefaction unit, which liquefaction unit is powered by energy essentially from renewable sources; and, (c) when additional power is needed, using electrical energy generated in a process in which electrical energy and hydrogen are co-generated by an integrated electrolysis process comprising: (d) electrolysing a metal salt or mixture of metal salts and water into the corresponding metal or metals, acid or acids, and oxygen (electricity storage phase), and (e) producing gaseous hydrogen and recovering electricity in a regeneration reaction of the metal (s) and acid(s) of step (d) (regeneration phase); wherein at least part of the gaseous hydrogen generated in step (e) is used in step (b) of the process.

Plant and process for liquefying natural gas

The invention relates to a novel plant and process for producing liquefied natural gas. The plant of the invention is of the type that comprises one natural gas pre-cooling heat exchanger (2) having an inlet (13) for natural gas and an outlet (14) for cooled natural gas, optionally a distributor (4) having an inlet (18) connected to the outlet for cooled natural gas and having one or more outlets (22,23), and one or more main heat exchangers (5,5') each comprising a first hot side (25,25') having one inlet (26,26') connected to one outlet (22,23) of the distributor (4) and an outlet (95,95') for liquefied natural gas, which plant further comprises a pre-cooling refrigerant circuit (3) for removing heat from the natural gas in the natural gas pre-cooling heat exchanger (15), and one or more main refrigerant circuits (43,43') for removing heat from natural gas flowing through the first hot side of the corresponding main heat exchanger. The invention is based on the use of separate pre-cooling circuits: one for the pre-cooling of the natural gas and one for the pre-cooling of the main refrigerant.

liquefaction system of boil-off gas and ship having the same

본 발명은 가스 처리 시스템 및 이를 포함하는 선박에 관한 것으로서, 액화가스 저장탱크; 하나의 구동원에 의해 가동되는 다단으로 구성되며 최종단의 토출압력이 엔진의 요구압력을 초과하도록 마련되고, 상기 액화가스 저장탱크에서 발생한 증발가스를 압축하여 중간단에서 상기 엔진으로 공급하는 압축기; 상기 압축기의 적어도 1단에 의해 압축된 증발가스 중 적어도 일부를 감압하는 감압밸브; 증발가스의 흐름을 기준으로 상기 감압밸브와 직렬로 마련되며 증발가스를 냉매로 냉각하는 냉각부; 및 상기 압축기의 중간단 하류 및 최종단 하류의 증발가스가 상기 감압밸브와 상기 냉각부를 경유해 상기 액화가스 저장탱크로 전달되도록 하는 증발가스 액화라인을 포함하는 것을 특징으로 한다.

Process for liquefaction and denitrogenation of natural gas and plant therefor

Procédé de liquéfaction et de déazotation de gaz naturel, installation de mise en oeuvre, et gaz obtenus par cette séparation. L'invention concerne un procédé de liquéfaction et de déazotation de gaz naturel (1) contenant de l'azote, dans lequel ledit gaz naturel (1) est refroidi, liquéfié et séparé en une première fraction de tête (9) relativement plus volatile enrichie en azote, et en une première fraction de pied (15). Le procédé est caractérisé en ce que la première fraction de tête (9) est refroidie et liquéfiée, séparée en une deuxième fraction de tête (11) relativement plus volatile qui fournit de l'azote gazeux (29), et en une deuxième fraction de pied (12) qui est retraitée, et en ce que la première fraction de pied (15) est refroidie pour fournir du gaz naturel liquéfié essentiellement exempt d'azote (24). D'autres modes de réalisation sont décrits.

Refrigeration device and installation

Dispositif de réfrigération à basse température, le dispositif de réfrigération étant disposé dans un cadre (100) et comprenant un circuit de travail (10) formant une boucle et contenant un fluide de travail, le circuit (10) de travail formant un cycle comprenant en série: un mécanisme (2, 3) de compression, un mécanisme (4, 5, 6) de refroidissement, un mécanisme (7) de détente et un mécanisme (6, 8) de réchauffement, les mécanismes de refroidissement et de réchauffage du fluide de travail comprenant un échangeur (6) de chaleur commun dans lequel le fluide de travail transite à contre-courant dans deux portions de transit distinctes du circuit (10) de travail, le dispositif (1) comprenant un échangeur (8) de chaleur de réfrigération destiné à extraire de la chaleur à au moins un organe (125) par échange de chaleur avec le fluide de travail circulant dans le circuit (10) de travail, le mécanisme (2, 3) de compression comprenant deux compresseurs (2, 3) distincts, le mécanisme (4, 5, 6) de refroidissement du fluide de travail comprenant deux échangeurs (4, 5) de chaleur de refroidissement disposés respectivement à la sortie des deux compresseurs (2, 3) et assurant un échange de chaleur entre le fluide de travail et un fluide de refroidissement, le cadre (100) s’étendant selon une direction (A) longitudinale et comprenant une base (101) inférieure destinée à être fixée sur un support, les échangeurs (4, 5) de chaleur de refroidissement étant situés dans le cadre (100) autour de l’échangeur (6) de chaleur commun, c’est-à-dire que les échangeurs (4, 5) de chaleur de refroidissement ne sont pas situés en dessous de l’échangeur (6) de chaleur commun entre l’échangeur (6) de chaleur commun et la base (101) inférieure du cadre (100). Figure de l’abrégé : Fig. 1

STATION FOR REDUCING PRESSURE AND LIQUID GAS

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2015 139 854 A (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015139854, 20.02.2014 (71) Заявитель(и): КРИОСТАР САС (FR) Приоритет(ы): (30) Конвенционный приоритет: 20.02.2013 FR 13 00380 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.09.2015 R U (43) Дата публикации заявки: 30.03.2017 Бюл. № 10 (72) Автор(ы): ПАЖ Гийом (FR), МАРКУЧЧИЛИ Фредерик (FR) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2014/128408 (28.08.2014) R U (54) СТАНЦИЯ ДЛЯ СНИЖЕНИЯ ДАВЛЕНИЯ И СЖИЖЕНИЯ ГАЗА (57) Формула изобретения 1. Станция для снижения давления (PLD) газа и для сжижения газа, в частности природного газа, содержащая: - турбодетандер (12), - устройство для утилизации механической работы (WM), произведенной в процессе снижения давления газа, - систему охлаждения, содержащую устройства для сжатия (C1, С2, С3), и - устройство для конденсации (14) сжижаемого газа, отличающаяся тем, что содержит: - устройство для утилизации тепла ((?), производимого устройствами для сжатия (C1, С2, С3; С) системы охлаждения, которые связаны с устройствами (10; 40; 110) для нагрева газа выше по потоку от входа в турбодетандер (12). 2. Станция по п. 1, отличающаяся тем, что устройства для конденсации (14) снабжены ответвлением трубопровода (09) вниз по потоку от турбодетандера (12). 3. Станция по любому из пп. 1 или 2, отличающаяся тем, что она содержит замкнутый контур между устройством для конденсации (14), устройствами для сжатия (C1, С2, С3; С) и устройствами (10; 40) для нагрева газа. 4. Станция по любому из пп. 1 или 2, отличающаяся тем, что содержит первый замкнутый контур между устройствами для сжатия (С1, С2, С3), устройством для конденсации (14) и по меньшей мере одним Стр.: 1 A 2 0 1 5 1 3 9 8 5 4 A Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" 2 0 1 5 1 3 9 8 5 4 FR 2014/050349 (20.02.2014 ...

Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition

Nitrogen is removed from a cryogenic hydrocarbon composition. The cryogenic hydrocarbon composition is split into a first portion and a second portion having the same composition and phase as the first portion. The first portion is fed to a nitrogen stripper column, operating at a stripping pressure, from which a nitrogenstripped liquid is drawn. The second portion is fed into the nitrogen-stripped liquid or in a liquid hydrocarbon product stream or in a process vapour which are produced from the nitrogen-stripped liquid involving at least a step of depressurizing the nitrogen-stripped liquid to a flash pressure that is lower than the stripping pressure. The second portion bypasses the nitrogen stripper column between the stream splitting and the feeding of the second portion into the nitrogen-stripped liquid or the liquid hydrocarbon product stream or the process vapour.

Pre-cooled liquifying method

本发明涉及预冷却的液化方法，具体地涉及一种用于对天然气流进行液化的系统和方法，该方法包括步骤：提供用于液化的脱水天然气流，在预冷却设备中预冷却该脱水天然气流，这里该预冷却是使用基本由氢氟碳化物(HFC)制冷剂组成的预冷却剂来进行的，在主热交换器中，通过与汽化的烃混合制冷冷却剂的间接热交换，来进一步冷却该预冷却过的脱水天然气流，来产生液化的天然气产物流，这里该混合的制冷冷却剂包含乙烷、甲烷、氮气、和小于或者等于3mol％的丙烷。

Integrally-geared compressors for precooling in lng applications

A natural gas liquefaction system is disclosed, which comprises at least a pre-cooling loop (103), through which a first refrigerant is adapted to circulate. The pre-cooling loop comprises at least one compressor (109) for pressurizing the first refrigerant; at least one prime mover (111) for driving the compressor (109); at least one condenser (115) for removing heat from the first refrigerant; at least a first expansion element (119A-119D) for expanding the first refrigerant; at least a first heat exchanger (123A- 123D) for transferring heat from natural gas to the first refrigerant. The system further comprises at least a cooling loop (105), downstream of the pre-cooling loop, where through a second refrigerant circulates. The natural gas is adapted to be sequentially cooled in the pre-cooling loop and in the cooling loop. The compressor of the pre-cooling loop is an integrally-geared turbo-compressor comprising a plurality of compressor stages (109A-109D).