СПОСОБ ПРОИЗВОДСТВА АЗОТНОЙ ШУГИ И УСТРОЙСТВО ДЛЯЕГО ОСУЩЕСТВЛЕНИЯ

Изобретение относится к способу и устройству для производства азотной шуги. Низкотемпературный сосуд заполняют жидким азотом; эжектор, который всасывает жидкий азот посредством продувания жидкого или газообразного хладагента, такого как охлажденный до низкой температуры газообразный гелий или жидкий гелий, имеющего давление выше, чем в пространстве внутри сосуда, расположен в сосуде, жидкий азот, выдуваемый вместе с хладагентом, охлаждается хладагентом до превращения в мелкодисперсные частицы твердого азота, которые падают, и газ, находящийся в пространстве сосуда, выводится из сосуда так, чтобы в этом пространстве поддерживалось давление выше атмосферного давления. Способ позволяет получить азотную шугу с мелкодисперстными частицами твердого азота и является простым в реализации. Второй заявленный способ производства азотной шуги заключается в снижении давления газовой фазы жидкого азота в адиабатическом сосуде таким образом, чтобы вызвать испарение азота из жидкой фазы и достигнуть состояния ...

Patent RU2019112456A3

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2019 112 456 A (51) МПК F25J 1/02 (2006.01) F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2019112456, 24.04.2019 (71) Заявитель(и): ЭР ПРОДАКТС ЭНД КЕМИКАЛЗ, ИНК. (US) Приоритет(ы): (30) Конвенционный приоритет: 27.04.2018 US 15/964,377 Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" Стр.: 1 A 2 0 1 9 1 1 2 4 5 6 R U A (57) Формула изобретения 1. Способ сжижения сырьевого потока природного газа с получением готового СПГ, причем способ включает в себя: (a) пропускание первого сырьевого потока природного газа через и охлаждение первого сырьевого потока природного газа на теплой стороне части из множества секций или всех из множества секций теплообменника, таким образом, чтобы предварительно охлаждать и сжижать первый сырьевой поток природного газа, причем множество секций теплообменника включает в себя первую секцию теплообменника, в которой поток природного газа предварительно охлаждается, и вторую секцию теплообменника, в которой поток предварительно охлажденного природного газа из первой секции теплообменника сжижают с получением первого потока сжиженного природного газа; (b) мгновенное испарение первого потока сжиженного природного газа, отводимого из второй секции теплообменника, с образованием газа мгновенного испарения и готового СПГ, и отделение газа мгновенного испарения от готового СПГ таким образом, чтобы получить поток газа мгновенного испарения и поток готового СПГ; (c) сжатие потока газа мгновенного испарения и рециркуляцию сжатого газа мгновенного испарения обратно в первый сырьевой поток природного газа; (d) циркуляцию метансодержащего хладагента в контуре охлаждения, включающем в себя множество секций теплообменника, компрессорную линию, содержащую множество компрессоров и/или ступеней сжатия и один или большее количество промежуточных охладителей и/или выходных охладителей, ...

СПОСОБЫ ХРАНЕНИЯ КРИОГЕННЫХ ТЕКУЧИХ СРЕД В РЕЗЕРВУАРАХ ДЛЯ ХРАНЕНИЯ

... 1. Способ поддержания переохлажденного состояния внутри донного слоя криогенной текучей среды в резервуаре для хранения, включающий отведение части криогенной текучей среды, охлаждение отведенной части криогенной текучей среды и повторное введение отведенной части криогенной текучей среды обратно в зону жидкости резервуара для хранения.2. Способ по п. 1, в котором отведенную часть криогенной текучей среды подают обратно в резервуар для хранения в более высоком положении, чем положение, из которого криогенную текучую среду отводили из резервуара для хранения.3. Способ по п. 1, в котором криогенную текучую среду используют для охлаждения отведенной части криогенной текучей среды.4. Способ по п. 3, в котором криогенная текучая среда находится в теплообменнике.5. Способ по п. 1, в котором создают циркуляцию отведенной части криогенной текучей среды.6. Способ по п. 4, в котором создают эффект термосифона для циркуляции отведенной части криогенной текучей среды.7. Способ по п. 3, в котором охлаждение ...

Крупномасштабное сжижение водорода посредством водородного холодильного цикла высокого давления, объединенного с новым предварительным охлаждением однократно смешанным хладагентом

FIELD: chemistry. SUBSTANCE: present invention relates to a method of liquefying hydrogen. Proposed method comprises steps of cooling feed gas stream containing hydrogen at pressure of at least 1.5 MPa abs (15 bar abs) To temperature below critical temperature of hydrogen at stage of first cooling to produce liquid product flow. According to the invention, the flow of the supplied gas is cooled by means of a closed cycle of the first cooling with the flow of the first high-pressure coolant containing hydrogen, where the flow of the first high-pressure coolant is divided into two partial flows. First partial flow is expanded to low pressure thus obtaining cold for cooling of pre-cooled fed gas below critical pressure of hydrogen, and compressed to medium pressure. Second partial flow is expanded to near average pressure and directed to the first partial flow of medium pressure. EFFECT: technical result is higher efficiency and reduced capital costs. 15 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 718 378 C1 (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/001 (2020.02); F25J 1/0042 (2020.02); F25J 1/005 (2020.02); F25J 1/0052 (2020.02); F25J 1/0055 (2020.02); F25J 1/0062 (2020.02); F25J 1/0065 (2020.02); F25J 1/0067 (2020.02); F25J 1/0072 (2020.02); F25J 1/0092 (2020.02); F25J 1/0095 (2020.02); F25J 1/0214 (2020.02); F25J 1/0215 (2020.02); F25J 1/0221 (2020.02); F25J 1/025 (2020.02); F25J 1/0259 (2020.02); F25J 1/0268 (2020.02); F25J 1/0279 (2020.02); F25J 1/0288 (2020.02); F25J 1/0291 (2020.02); F25J 1/0292 (2020.02); F25J 1/0294 (2020.02) 2018116437, 20.10.2016 (24) Дата начала отсчета срока действия патента: 20.10.2016 (73) Патентообладатель(и): ЛИНДЕ АКЦИЕНГЕЗЕЛЬШАФТ (DE) 02.04.2020 Приоритет(ы): (30) Конвенционный приоритет: 27.10.2015 EP 15003070.8 (45) Опубликовано: 02.04.2020 Бюл. № 10 C 1 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 28.05.2018 (86) ...

УСТАНОВКА ДЛЯ РЕДУЦИРОВАНИЯ ГАЗА И ВЫРАБОТКИ ПОСТОЯННОГО КОЛИЧЕСТВА СЖИЖЕННОГО ПРИРОДНОГО ГАЗА (ВАРИАНТЫ)

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2019 114 334 A (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2019114334, 07.05.2019 (71) Заявитель(и): Курочкин Андрей Владиславович (RU) Приоритет(ы): (22) Дата подачи заявки: 07.05.2019 (43) Дата публикации заявки: 09.11.2020 Бюл. № 31 (72) Автор(ы): Курочкин Андрей Владиславович (RU) R U Адрес для переписки: 450059, г. Уфа, пр. Октября, 43/5, кв. 169, Курочкину А.В. Стр.: 1 A 2 0 1 9 1 1 4 3 3 4 R U A (57) Формула изобретения 1. Установка для редуцирования газа и выработки постоянного количества сжиженного природного газа, включающая блоки осушки и очистки газа, теплообменник, сепаратор, редуцирующее устройство, детандер и компрессор, соединенные между собой, отличающаяся тем, что установка оснащена холодильной машиной с линией подвода энергии со стороны, компрессором и двумя испарителями, линия осушенного природного газа высокого давления разделена на по меньшей мере одну линию вспомогательного газа, линии основного и вспомогательного технологического газа и линию продукционного газа, на которой последовательно расположены первая секция теплообменника, блок очистки, вторая секция теплообменника, редуцирующее устройство и сепаратор, оснащенный линией вывода СПГ и линией обратного газа, на линии основного технологического газа расположены первый испаритель, соединение с линией вспомогательного технологического газа, оснащенной холодильником, детандер и соединение с линией обратного газа, а на образованной этими линиями линии газа низкого давления расположен теплообменник, при этом холодильник расположен также на по меньшей мере одной линии вспомогательного газа, оснащенной вторым редуцирующим устройством и вторым испарителем, кроме того, линия газа низкого давления соединена с линией основного технологического газа перед испарителем линией циркуляционного газа, на которой установлены циркуляционный компрессор и холодильник. 2. Установка для ...

СИСТЕМА РЕЦИРКУЛЯЦИИ КРИОАГЕНТА ЗАМКНУТОГО ЦИКЛА И СПОСОБ

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 121 595 A (51) МПК F25B 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017121595, 10.12.2015 (71) Заявитель(и): СЕРН ЮРОПИЭН ОРГАНИЗЕЙШЕН ФОР НЬЮКЛИЭ РИСЁЧ (CH) Приоритет(ы): (30) Конвенционный приоритет: 10.12.2014 EP 14197216.6 02 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 10.07.2017 EP 2015/079195 (10.12.2015) (87) Публикация заявки PCT: WO 2016/091990 (16.06.2016) A Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", С.В. Новоселовой R U (57) Формула изобретения 1. Система (1) охлаждения для дистанционного охлаждения тепловой нагрузки, имеющей первую часть (27) и вторую часть (25), которая содержит источник (4) холода, имеющий первую ступень (5) охлаждения и вторую ступень (6) охлаждения, причем температура первой ступени охлаждения выше, чем температура второй ступени охлаждения; контур циркуляции криогенного агента для циркуляции потока криогенного агента в замкнутом цикле, причем замкнутый цикл термически сопряжен с источником холода; и компрессор (7) для обеспечения сжатия и циркуляции потока криоагента в контуре циркуляции криоагента, причем контур циркуляции криоагента содержит первый трубопровод для термического соединения первой ступени охлаждения источника холода с первой частью тепловой нагрузки для охлаждения первой части в сторону температуры первой ступени охлаждения и второй трубопровод для термического соединения второй ступени охлаждения источника холода со второй частью тепловой нагрузки для охлаждения второй части в сторону температуры второй ступени охлаждения, и поток криоагента является потоком переохлажденной или насыщенной жидкости, двухфазного, насыщенного или перегретого, сверхкритического газообразного гелия. 2. Система (1) охлаждения по п. 1, отличающаяся тем, что первая часть (27) тепловой Стр.: 1 A 2 0 1 7 1 2 1 5 9 5 (54) СИСТЕМА РЕЦИРКУЛЯЦИИ КРИОАГЕНТА ЗАМКНУТОГО ЦИКЛА И СПОСОБ 2 0 1 7 1 ...

СПОСОБ ПОЛУЧЕНИЯ СЖИЖЕННОГО ПРИРОДНОГО ГАЗА

Verfahren und Vorrichtung zur Herstellung von Matsch aus verflüssigtem Gas

Liquefaction of gases

... 974,542. Liquefaction of gases.. PETROCARBON DEVELOPMENTS Ltd. Dec. 4, 1962, No. 45789/62. Addition to 912,478. Heading F4P. The method of cooling a compressed gas stream to below 70‹ K. in a plurality of inclined heat exchangers in series traversed by a separate stream of the gas after expansion in a turbine as claimed in the parent Specification, is modified in that helium is used as the coolant gas. Hydrogen is liquefied by passing it at 10 atmospheres pressure through an ammoniacooled exchanger 53, a nitrogen-cooled exchanger 53, a nitrogen-cooled exchanger 54 where its. temperature is reduced to 70‹ K. and further cooling is effected in exchangers 55, 56, 57 in series and wet hydrogen at 22‹ K. is expanded at a valve 58 into a container 59; each of the exchangers 55, 56, 57 being cooled by a countercurrent flow of helium cooled by expansion at an associated turbine 55b, 56b, 57b at a pressure of 7 atmospheres. The helium circuits are fed in parallel from a common discharge line of ...

METHOD AND APPARATUS FOR THE TREATMENT OF LIQUEFIED NATURAL GAS

METHOD AND APPARATUS FOR LIQUEFYING HELIUM BY ISENTROPIC EXPANSION

... 1358169 Gas liquefaction CRYOGENIC TECHNOLOGY Inc 18 Oct 1971 [19 Oct 1970] 48279/71 Heading F4P A helium liquefaction plant, comprises an indirect heat exchanger 16 in which a high pressure stream 14 of the gas to be liquefied is cooled by a low pressure stream 17 of the same gas, the cooled gas then being fed, via a further heat exchanger 40 and a surge chamber 41 to an engine 42 in which the gas is expanded isentropically to effect at least partial liquefaction any unliquefied gas returning via the low pressure stream. The high pressure stream is produced by a compressor 10 with an after-cooler 11 and is branched, one branch entering the first stage 15 of the heat exchanger, the other passing through a liquid nitrogen pre-cooler 18, the two branches joining up to enter the second stage 22 of the exchanger. The low pressure stream is obtained by drawing off some of the h.p. stream and passing it through charcoal traps 24, 32 before isentropically expanding it in engines 25, 33 and supplying ...

Liquefaction and revaporization of gases

... 1,082,789. Liquefaction and revaporization of gases. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. May 27, 1966 [May 31, 1965; Sept. 21, 1965; Nov. 5, 1965], No. 23828/66. Heading F4P. In liquefying natural hydrocarbon gases, e.g. methane, propane, butane, by indirect heat exchange with a cooled cold-carrier fluid or in revaporizing liquefied gas by indirect heat exchange with cold-carrier fluid which is thus cooled, the carrier fluid comprises a liquid which does not solidify during the heat exchange process, has a boiling point just below, equal to or above ambient temperature and contains particles of a substance which during the heat exchange undergoes a phase change. A suitable cold-carrier fluid comprises isopen. tane diluted with 12% normal pentane or with 15% isohexane serving as freezing point depressants and the particles may comprise water or water mixed with freezing point depressants such as ammonia, glycol, alcohol. The particles may also be absorbed by silica gel, carbon ...

Cooling in liquefaction process

Methods and apparatus are disclosed for efficient cooling within air liquefaction processes with integrated use of cold recycled from a thermal energy store. There is a cryogenic liquefaction device comprising a heat exchanger 100, a first phase separator 2, a first expansion device and a first expansion turbine 5. There is a cold recovery circuit including a heat transfer fluid and an arrangement of conduits arranged such that a first portion of a pressurised stream of gas is directed through the heat exchanger, the first expansion device and the first phase separator. A second portion of the pressurised stream of gas is directed through the first expansion turbine then through the heat exchanger in a counter-flow direction to the first portion of the pressurised stream of gas. The heat transfer fluid is directed through the heat exchanger. Also disclosed is a cryogenic energy storage device using such a liquefaction device and also methods for balancing such devices.

Liquefaction of nitrogen in regasificaton of liquid methane

... 910,489. Liquefaction and revaporization of gases. CONCH INTERNATIONAL METHANE Ltd. March 29, 1961 [June 16, 1960], No. 11540/61. Class 8(2). Liquefaction of gaseous nitrogen entering the system at atmospheric pressure, through a line 14, Fig. 1, is effected by cooling in a heat exchanger 7 traversed by pressurized liquid methane issuing from a pump 4 and which is thereby vaporized, compressing the so-cooled nitrogen gas at 15 and condensing it in an exchanger 13 cooled by feed liquid methane at atmospheric pressure; the resulting compressed methane gas leaving exchanger 7 being warmed in an exchanger 9 and expanded in a turbine 10 which provides a source of power to drive the pump 4 and compressor 15. As shown the nitrogen issuing from compressor 15 is further compressed at 18 before passing to the condenser 13, the heat of compression being removed by liquid methane exchangers 5, 6. Also turbine 10 discharges through an exchanger 11 traversed by waste hot water before final expansion ...

Production of solidified cooled bodies

Apparatus for producing hydrogen pellets for introduction into a plasma-physical equipment, fusion reactor or the like, comprises an extrusion cryostat T1 and a supply cryostat T2, the temperatures of which can be adjusted independently of each other. The solidified material is extruded from the extrusion cryostat T1 into the supply cryostat T2 at a relatively high temperature appropriate for extrusion, and the material is cooled in the supply cryostat to a lower temperature which is suitable for the ejection operation and which ensures high strength. The apparatus advantageously comprises a double ram 14 which is used as a whole for the extrusion and which incorporates a coaxially guided ejection ram of smaller diameter, by means of which the extruded material can be ejected from the supply cryostat at the required speed. The extruded material is prevented from freezing solid in the supply duct 76 of the supply cryostat T2 by a heating means which has a short time constant and by means ...

Gas manufacture

Process for producing a methane-rich liquid.

GAS SUPPLY SYSTEMS FOR GAS ENGINES

INTEGRATION OF HYDROGEN LIQUEFACTION WITH GAS PROCESSING UNITS

Abstract A method including, compressing a first hydrogen stream, and expanding a portion to produce a hydrogen refrigeration stream, cooling a second hydrogen stream thereby producing a cool hydrogen stream, wherein at least a portion of the refrigeration is provided by a nitrogen refrigeration stream, further cooling at least a portion of the cool hydrogen stream thereby producing a cold hydrogen stream, and a warm hydrogen refrigeration stream wherein at least a portion of the refrigeration is provided by the hydrogen refrigeration stream, compressing the warm hydrogen refrigeration stream, mixing the balance of the compressed first hydrogen stream with a high-pressure gaseous nitrogen stream to form an ammonia synthesis gas stream, and wherein the first hydrogen stream and the warm hydrogen refrigeration stream are compressed in the same compressor. r- I LO - I * * I0 (N t.0 o (N: I n * * 212 * . I I * * -0 00* LrL. m ...

PURGING AND RENDERING INERT A TANK STORAGE SITE

INTEGRATION OF HYDROGEN LIQUEFACTION WITH GAS PROCESSING UNITS

Abstract A method including, compressing a first hydrogen stream, and expanding a portion to produce a hydrogen refrigeration stream, cooling a second hydrogen stream thereby producing a cool hydrogen stream, wherein at least a portion of the refrigeration is provided by a nitrogen refrigeration stream, further cooling at least a portion of the cool hydrogen stream thereby producing a cold hydrogen stream, and a warm hydrogen refrigeration stream wherein at least a portion of the refrigeration is provided by the hydrogen refrigeration stream, compressing the warm hydrogen refrigeration stream, mixing the balance of the compressed first hydrogen stream with a high-pressure gaseous nitrogen stream to form an ammonia synthesis gas stream, and wherein the first hydrogen stream and the warm hydrogen refrigeration stream are compressed in the same compressor. r- I LO - I * * I0 (N t.0 o (N: I n * * 212 * . I I * * -0 00* LrL. m ...

METHOD AND SYSTEM FOR COOLING A HYDROCARBON STREAM USING A GAS PHASE REFRIGERANT

Described herein are methods and systems for the liquefaction of a natural gas feed stream using a refrigerant comprising methane. The methods and systems use a refrigeration circuit and cycle that employs two or more turbo-expanders to expand two 5 or more streams of gaseous refrigerant down to different pressures to provide cold streams of at least predominantly gaseous refrigerant at different pressures that are used to provide refrigeration for precooling and liquefying the natural gas. The resulting liquefied natural gas stream is then flashed to produce an LNG product and a flash gas, the flash gas being recycled to the natural gas feed stream.

A method of storing energy and a cryogenic energy storage system

The present invention concerns systems for storing energy and using the stored energy to generate electrical energy or drive a propeller (505). In particular, the present invention provides a method of storing energy comprising: providing a gaseous input, producing a cryogen from the gaseous input; storing the cryogen; expanding the cryogen; using the expanded cryogen to drive a turbine (320) and recovering cold energy from the expansion of the cryogen. The present invention also provides a cryogenic energy storage system comprising: a source of cryogen; a cryogen storage facility (370); means for expanding the cryogen; a turbine (320) capable of being driven by the expanding cryogen; and means (340, 350) for recovering cold energy released during expansion of the cryogen.

METHOD OF RE-GASIFICATION OF LIQUID NATURAL GAS TO GENERATE LIQUID AIR

A method re-gasification of liquid natural gas. A first step involve providing at more than one heat exchanger, with each heat exchanger having a first flow path for passage of a first fluid and a second flow path for passage of a second fluid. A second step involves passing a stream of liquid natural gas sequentially along the first flow path of each heat exchanger until it is in gaseous form and concurrently passing a stream of air sequentially along the second flow path of each heat exchanger, allowing a gaseous portion of the stream of air to pass to a next sequential heat exchanger and capturing in a collection vessel a liquefied portion of the stream of air. This processes results in a cryogenic heat exchange in which the liquid natural gas is gasified in a series of stages and the air is separated in a series of stages through sequential cryogenic air separation.

INCORPORATED CASCADE COOLING CYCLE FOR LIQUEFYING A GAS BY REGASIFYING LIQUEFIED NATURAL GAS

LIQUEFIED NATURAL GAS PRODUCTION SYSTEM AND METHOD WITH GREENHOUSE GAS REMOVAL

HEAT EXCHANGER CONFIGURATION FOR A HIGH PRESSURE EXPANDER PROCESS AND A METHOD OF NATURAL GAS LIQUEFACTION USING THE SAME

A method for liquefying a feed gas stream. A compressed first refrigerant stream is cooled and expanded to produce an expanded first refrigerant stream. The feed gas stream is cooled to within a first temperature range by exchanging heat only with the expanded first refrigerant stream to form a liquefied feed gas stream and a warmed first refrigerant stream. A compressed second refrigerant stream is provided is cooled to produce a cooled second refrigerant stream. At least a portion of the cooled second refrigerant stream is further cooled by exchanging heat with the expanded first refrigerant stream, and then is expanded to form an expanded second refrigerant stream. The liquefied feed gas stream is cooled to within a second temperature range by exchanging heat with the expanded second refrigerant stream to form a sub-cooled LNG stream and a first warmed, second refrigerant stream.

METHOD FOR LIQUEFACTION OF INDUSTRIAL GAS BY INTEGRATION OF METHANOL PLANT AND AIR SEPARATION UNIT

A method for the liquefaction of an industrial gas by integration of a methanol plant and an air separation unit (ASU) is provided. The method can include the steps of: (a) providing a pressurized natural gas stream (24, 27), a pressurized purge gas stream (48) originating from a methanol plant, and a pressurized air gas stream (132) comprising an air gas originating from the ASU; (b) expanding three different pressurized gases to produce three cooled streams (32, 62, 142), wherein the three different pressurized gases are the pressurized natural gas stream, the pressurized purge gas stream, and the pressurized air gas stream; and (c) liquefying the industrial gas (44) in a liquefaction unit against the three cooled streams to produce a liquefied industrial gas stream (46). The industrial gas to be liquefied is selected from the group consisting of a first portion of the pressurized natural gas stream, a nitrogen gas stream, hydrogen and combinations thereof.

A SYSTEM AND METHOD FOR LIQUEFYING PRODUCTION GAS FROM A GAS SOURCE

A system for liquefying production gas from a gas source containing a fluid having C1-C12 entrained gases includes a first phase separator for separating the C1-C12 gases from the fluid from the gas source. The first phase separator has an inlet in fluid communication with the gas source, a gas outlet and at least one alternative outlet. A first cryogenic liquefaction vessel has an inlet and an outlet. The inlet is in fluid communication with the gas outlet of the first phase separator. The first cryogenic liquefaction vessel cools the C1-C12 gases to liquefy the C3-C12 petroleum gases. A second phase separator is provided for separating the C3-C12 liquefied gases from the C1-C2 gases. The second phase separator has an inlet, a liquid outlet and a gas outlet. The inlet is in fluid communication with the outlet of the first cryogenic liquefaction vessel. At least one storage vessel is provided in fluid communication with the liquid outlet of the second phase separator for collection of the ...

PROCEDURE AND DEVICE FOR DERIVING FROM WITH INCIDENTS FROM A STORAGE VESSEL WITHDRAWING GASES OR ITSELF WITH DERIVING EVAPORATING LIQUIDS.

Procedure for the liquefaction of a hydrocarbon-rich employment parliamentary group.

Es wird ein Verfahren zum Verflüssigen einer Kohlenwasserstoffreichen Einsatzfraktion, vorzugsweise von Erdgas, gegen einen Stickstoff-Kältekreislauf beschrieben, wobei die Abkühlung der Einsatzfraktion gegen anzuwärmenden, gasförmigen Stickstoff und die Verflüssigung der Einsatzfraktion gegen zu verdampfenden, flüssigen Stickstoff erfolgt. Erfindungsgemäss erfolgt die Abkühlung und Verflüssigung der Einsatzfraktion in einem wenigstens dreistufigen Wärmetauschprozess (E1aE1c), wobei in dem ersten Abschnitt des Wärmetauschprozesses (E1a) die Einsatzfraktion (1) gegen überhitzten gasförmigen Stickstoff (9) so weit abgekühlt wird, dass eine im Wesentlichen vollständige Abtrennung (D2) der schwereren Komponenten (2´) realisierbar ist, in dem zweiten Abschnitt des Wärmetauschprozesses (E1b) die von schwereren Komponenten befreite Einsatzfraktion (2) gegen zu überhitzenden gasförmigen Stickstoff (9) teilverflüssigt wird, und in dem dritten Abschnitt des Wärmetauschprozesses (E1c) die Einsatzfraktion ...

Method for liquefying a hydrocarbon-rich employment fraction.

Es wird ein Verfahren zum Verflüssigen einer kohlenwasserstoffreichen Einsatzfraktion, vorzugsweise von Erdgas, gegen einen Stickstoff-Kältekreislauf beschrieben, wobei die Abkühlung der Einsatzfraktion gegen anzuwärmenden, gasförmigen Stickstoff und die Verflüssigung der Einsatzfraktion gegen zu verdampfenden, flüssigen Stickstoff erfolgt. Erfindungsgemäss erfolgt die Abkühlung und Verflüssigung der Einsatzfraktion in einem wenigstens dreistufigen Wärmetauschprozess (E1aE1c), wobei in dem ersten Abschnitt des Wärmetauschprozesses (E1a) die Einsatzfraktion (1) gegen überhitzten gasförmigen Stickstoff (9) so weit abgekühlt wird, dass eine im Wesentlichen vollständige Abtrennung (D2) der schwereren Komponenten (2´) realisierbar ist, in dem zweiten Abschnitt des Wärmetauschprozesses (E1b) die von schwereren Komponenten befreite Einsatzfraktion (2) gegen zu überhitzenden gasförmigen Stickstoff (9) teilverflüssigt wird, und in dem dritten Abschnitt des Wärmetauschprozesses (E1c) die Einsatzfraktion ...

SYSTEM AND METHOD FOR PRODUCTION OF LIQUEFIED NATURAL GAS WITH REMOVAL OF HOTHOUSE GAS

Method for liquefying natural gas through double-expansion of high-temperature and low-temperature nitrogen gas

The invention discloses a method for liquefying natural gas through double-expansion of high-temperature and low-temperature nitrogen gas, which comprises the followings steps: pressurizing and cooling the nitrogen gas to obtain high-pressure nitrogen gas of 2.2 to 3.6 MPa; introducing the high-pressure nitrogen gas and raw natural gas into a main heat exchanger so that the gas is cooled to a temperature of between 70 DEG C below zero and 30 DEG C below zero by using low-pressure nitrogen gas at the outlet of a low-temperature expander, then extracting one stream of the cooled gas and introducing the cooled gas into a high-temperature expander for expansion refrigeration, and then returning the gas to a position of which the temperature is between 100 DEG C below zero and 80 DEG C below zero in the main heat exchanger; and continuously cooling the other stream of the gas to a temperature of between 110 DEG C below zero and 70 DEG C below zero, then introducing the gas into the low-temperature ...

Process of separation of the hydrogen and hydrocarbons of a gas of tail of refinery

Process and apparatus to liquify gases, in particular carbon dioxide

SHORT TERM PEAK SHAVING OF NATURAL GAS

Carbon dioxide separating method for iron and steel industry, involves receiving flow enriched in carbon dioxide from absorption unit, sending it towards homogenization unit and subjecting carbon dioxide to intermediate compression stage

The method involves receiving a flow enriched in carbon dioxide (6) from an absorption unit (3) containing 40 to 95 percentage of carbon dioxide. The carbon dioxide is sent towards a gas homogenization unit (17) for attenuating a cyclic variation of pressure, flow and/or gas composition and is subjected to an intermediate compression stage (7) before the entry of the carbon dioxide in a cryogenic unit (9). An independent claim is also included for an integrated installation for the production of carbon dioxide from a gas supply containing carbon dioxide.

HYBRID METHOD FOR LIQUEFYING A GAS FUEL AND INSTALLATION WORK

La présente invention concerne un procédé de liquéfaction d'un gaz combustible à forte teneur en méthane, qui est un procédé hybride entre un procédé à détente et un procédé à cycle ouvert classique. Plus précisément, le procédé selon l'invention comprime en premier lieu le medium de froid puis, dans un premier temps, utilise sa vaporisation comme pouvoir refroidissant, et le détend dans un deuxième temps pour générer du froid supplémentaire. La présente invention concerne également un procédé permettant la mise en œuvre du procédé selon l'invention.

METHOD AND PLANT FOR RE-GASIFICATION OF LNG

A method for re-gasification of LNG in which method natural gas is combusted in a burner to provide heat for evaporation of the LNG and where the heat is transferred from the burner to the LNG in a closed heat exchange system, wherein substantially pure oxygen is used in the combustion of natural gas, and that CO2 is separated from the exhaust gas for export or deposition, is described. A plant for re-gasification of LNG, the plant comprising a gas fired burner (14) for generation of heat for the re-gasification, a closed heat exchange system (5, 17,25) for transfer of heat from the burner to LNG to be vaporized, the plant additionally comprising a air separation unit (10) for generation of substantially pure oxygen to be fed to the burner (14), is also described. © KIPO & WIPO 2009 ...

Reliquefaction apparatus

método para resfriar um gás para liquefação

PROCEDURE TO LIQUEFY A TO BEGIN WITH RICH FRACTION IN HYDROCARBONS

Reivindicación 1: Procedimiento para licuar una fracción de partida rica en hidrocarburos, preferiblemente de gas natural, contra un circuito de refrigeración por nitrógeno, teniendo lugar el enfriamiento de la fracción de partida contra una corriente de nitrógeno gaseosa, a calentar, y la licuación de la fracción de partida contra una corriente de nitrógeno líquido, a evaporar, caracterizado porque: el enfriamiento y la licuación de la fracción de partida tiene lugar en un proceso de intercambio de calor de al menos tres etapas (E1a - E1c), siendo en una primera sección del proceso de intercambio de calor (E1a) enfriada la fracción de partida (1) contra una corriente de nitrógeno gaseosa a sobrecalentar (9) en una medida tal que se puede llevar a cabo una separación sustancialmente completa (D2) de los componentes pesados (2), siendo en una segunda sección del proceso de intercambio de calor (E1b) licuada parcialmente la fracción de partida (2), liberada de los componentes pesados, contra ...

BOG RECONDENSER AND LNG SUPPLY SYSTEM PROVIDED WITH SAME

METHOD AND DEVICE FOR LIQUEFYING NATURAL GAS

La présente invention concerne un procédé de liquéfaction de gaz naturel. Selon ce procédé, le gaz naturel est condensé sur des gaz réfrigérés et est ainsi purifié. La présente invention concerne également un dispositif de liquéfaction de gaz naturel comprenant un système de refroidissement (5) suivi d'un condensateur (7). Ledit condensateur (7) est relié à une source de gaz réfrigéré par une conduite (15).

Method and apparatus for reliquefying natural gas

Natural gas boiling off from LNG storage tanks located on board a sea-going vessel, is compressed in a plural stage compressor. At least part of the flow of compressed natural gas is sent to a liquefier operating on a Brayton cycle in order to be reliquefied. The temperature of the compressed natural gas from the final stage is reduced to below 0° C. by passage through a heat exchanger. The first compression stage is operated as a cold compressor and the resulting cold compressed natural gas is employed in the heat exchanger to effect the necessary cooling of the flow from the compression stage. Downstream of its passage through the heat exchanger the cold compressed natural gas flows through the remaining stages of the compressor. If desired, a part of the compressed natural gas may be supplied to the engines of the sea-going vessel as a fuel.

Rocket engine

Known air intake type rocket engines of the type in which air is condensed and liquefied by employing a propelling agent, loaded on the rocket, as a coolant, and in which the liquefied air is utilized as an oxidizing agent or working fluid, are improved according to the present invention in that air remaining uncondensed is compressed and then condensed and liquefield by employing the liquefied air as a coolant.

S cycle electric power system

A method for generating electric power comprises the S cycle, an air separation unit and a Rankine cycle. Steam, oxygen and coal are introduced into a reaction chamber to form fuel gas. The fuel gas flows through heat exchangers and a compressor-turbine group to three combustors. Three combustors are operated at different pressure levels. The combustion gases of the first combustor go to the first gas turbine. The exhaust of the first gas turbine is employed as working medium for the succeeding combustors and gas turbines. The combustion gases of the second combustor flow to the second gas turbine, and the combustion gases of the third combustor go to the third gas turbine. The exhaust of the third gas turbine is utilized to heat compressed air and to produce steam for coal gasification and Rankine cycle. An integrated air separation unit, including a pressure temperature swing process, produces pure oxygen on site and generates electricity through a turbine compressor group.

Incorporated cascade cooling cycle for liquefying a gas by regasifying liquefied natural gas

The present invention relates to a cooling cycle which enables a gas to be liquefied as the result of the regasification of liquefied natural gas.

Process and System for Reliquefying Boil-Off Gas (BOG)

A reliquefaction system and process for innovative reliquefaction of LNG boil-off gas (BOG), where the reliquefaction is propelled by LNG gas fuel. The reliquefaction system is preferably installed on shipboard including LNG carrier or harbor tug, where the LNG carrier and harbor tug use a gas fuel engine.

HYBRID METHOD FOR LIQUEFYING A FUEL GAS AND FACILITY FOR IMPLEMENTING SAME

УЛУЧШЕННЫЙ СПОСОБ И СИСТЕМА ДЛЯ ОХЛАЖДЕНИЯ УГЛЕВОДОРОДНОГО ПОТОКА С ПРИМЕНЕНИЕМ ХЛАДАГЕНТА В ГАЗОВОЙ ФАЗЕ

FIELD: gas industry.SUBSTANCE: invention relates to liquefaction of a natural gas feed stream using a methane-containing coolant. Method and systems use a cooling loop and cycle with two or more turbo-expander for expansion of two or more flows of gaseous coolant to different pressure values, to provide cold flows of at least a predominantly gaseous coolant at different pressure values, which are used to ensure cooling capacity for preliminary cooling and liquefaction of natural gas. Obtained liquefied natural gas flow is then subjected to instantaneous evaporation to produce finished LNG and flash gas, note here that flash gas is recycled into natural gas feed stream.EFFECT: technical result is higher efficiency of liquefaction of gas.17 cl, 5 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 743 094 C2 (51) МПК F25J 1/02 (2006.01) F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/0022 (2020.02); F25J 1/0047 (2020.02); F25J 1/005 (2020.02); F25J 1/0052 (2020.02); F25J 1/0072 (2020.02); F25J 1/0082 (2020.02); F25J 1/0092 (2020.02); F25J 1/0092 (2020.02); F25J 1/0204 (2020.02); F25J 1/0212 (2020.02); F25J 1/0214 (2020.02); F25J 1/0263 (2020.02); F25J 1/0288 (2020.02) (21)(22) Заявка: 2019112456, 24.04.2019 24.04.2019 15.02.2021 Приоритет(ы): (30) Конвенционный приоритет: 27.04.2018 US 15/964,377 (43) Дата публикации заявки: 26.10.2020 Бюл. № 30 (56) Список документов, цитированных в отчете о поиске: CN 105823304 A, 03.08.2016. US 2014/ 083132 A1, 27.03.2014. US 2016/327335 A1, 10.11.2016. SU 1355138 A3, 23.11.1987. US 2016/ 0313057 A1, 27.10.2016. 2 7 4 3 0 9 4 R U Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) УЛУЧШЕННЫЙ СПОСОБ И СИСТЕМА ДЛЯ ОХЛАЖДЕНИЯ УГЛЕВОДОРОДНОГО ПОТОКА С ПРИМЕНЕНИЕМ ХЛАДАГЕНТА В ГАЗОВОЙ ФАЗЕ (57) Реферат: Изобретение относится к сжижению сырьевого с целью обеспечения холодопроизводительности ...

ПОВЫШЕНИЕ ЭФФЕКТИВНОСТИ СИСТЕМЫ ПРОИЗВОДСТВА СПГ ПУТЕМ ПРЕДВАРИТЕЛЬНОГО ОХЛАЖДЕНИЯ ПОСТУПАЮЩЕГО ПОТОКА ПРИРОДНОГО ГАЗА

FIELD: gas industry.SUBSTANCE: liquefied natural gas production system includes a heat exchanger configured to perform heat exchange between the coolant flow and natural gas flow, for evaporation of the flow of the natural gas flow condensation stream; natural gas compressor, natural gas cooler for cooling compressed natural gas stream to temperature close to ambient temperature, and a natural gas expander for expansion of natural gas after cooling. Natural gas expander is connected to at least one heat exchanger for supply of natural gas to the expander. Heat exchanger comprises a first heat exchanger and further comprises a second heat exchanger configured to cool a stream of natural gas before natural gas flow compression in natural gas compressor or compressed natural gas flow before cooling of compressed natural gas flow in natural gas cooler.EFFECT: technical result is higher efficiency of cooling agent cleaning.18 cl, 11 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 685 778 C1 (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/0022 (2019.02); F25J 1/0035 (2019.02); F25J 1/0042 (2019.02); F25J 1/0072 (2019.02); F25J 1/0221 (2019.02); F25J 1/023 (2019.02); F25J 1/025 (2019.02); F25J 3/0233 (2019.02); F25J 3/0257 (2019.02); F25J 3/08 (2019.02) (21) (22) Заявка: 2018105598, 14.06.2016 14.06.2016 Дата регистрации: (73) Патентообладатель(и): ЭКСОНМОБИЛ АПСТРИМ РИСЕРЧ КОМПАНИ (US) Приоритет(ы): (30) Конвенционный приоритет: 15.07.2015 US 62/192,657 (56) Список документов, цитированных в отчете о поиске: US 2009/217701 A1, 03.09.2009. US (45) Опубликовано: 23.04.2019 Бюл. № 12 2013/199238 A1, 08.08.2013. RU 2137067 C1, 10.09.1999. RU 2344359 C1, 20.01.2009. US 5638698 A, 17.06.1997. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.02.2018 2 6 8 5 7 7 8 23.04.2019 R U (24) Дата начала отсчета срока действия патента: (72) Автор(ы): ПЬЕР, Фритц (US), ГУПТ, Параг, А. (US), ...

Малогабаритная установка сжижения природного газа

Малогабаритная установка сжижения природного газа, включающая в себя участок газопровода, криогенную газовую машину, работающую по обратному циклу Стерлинга, теплообменники вымораживатели-конденсаторы природного газа (ПГ), криогенную емкость для СПГ, газодувку, подогреватель азота, отличающаяся тем, что охлаждение, очистка ПГ от HO и СОи его ожижение производится в попеременно работающих теплообменниках вымораживателях-конденсаторах, охлаждаемых жидким азотом, сжижаемым в КГМ и в циркулирующем в замкнутом контуре, при этом часть циркуляционного азота отбирается на газодувку с последующим подогревом в подогревателе и используется для отогрева теплообменников с последующим возвратом этого потока азота в поток циркуляционного азота.

ANLAGE ZUR ERZEUGUNG VON NIEDERSPANNUGSSTROM MIT EINER ANLAGE, DIE IN EINER LUFTZERLEGUNGSANLAGE INTEGRIERT IST

Verfahren und Vorrichtung zur Herstellung von flüssigem und/oder gasförmigem Methan

Verfahren zum Verfluessigen eines Gases

Method and apparatus for cooling in liquef action process

Method for recovering LPG boil offgas using LNG as a heat transfer medium

Improvements in or relating to gas-expansion refrigerators

... 1,114,659. Refrigerating; gas liquefaction apparatus. PHILIPS GLOEILAMPENFABRIEKEN N.V. 29 Nov., 1966 [2 Dec., 1965], No. 53327/66. Headings F4H and F4P. Refrigeration apparatus comprises two parallel fed expansion orifices, the input to one orifice being pre-cooled by gas from that orifice and the input to the other orifice being pre-cooled by gas from both orifices. As shown, a first tube 6 has a ribbed section wound around a cylinder 50 and is connected to an expansion orifice 8 inside a coupling piece 50 while a second tube has an unribbed section 5 wound around tube 6 and a ribbed section 51 wound around a further cylinder 51, the second tube being connected to an expansion orifice 14. Apertures, not shown, are provided in coupling 50 so that tube 6 and section 5 are both cooled by gas from orifice 8 while section 51 is cooled by gas from orifice 14. The above apparatus is housed in a vacuuminsulated tube (Fig. 3, not shown) which has an outlet for liquefied gas ( ...

PRODUCTION OF FIRM CARBON DIOXIDE

PROCEDURE AND DEVICE FOR THE PRODUCTION OF LIQUID AND/OR GASEOUS METHANE

INTEGRATED PROCEDURE AND INTEGRATED PLANT FOR THE CRYOGENIC ADSORPTION AND SEPARATION FOR THE PRODUCTION OF CO2

SYSTEM FOR THE COLD COMPRESSION OF AN AIR FLOW WITH COOLING BY NATURAL GAS

METHOD AN INSTALLATION FOR TREATING A STORAGE SITE

INTEGRATION OF HYDROGEN LIQUEFACTION WITH GAS PROCESSING UNITS

Abstract A method including, compressing a first hydrogen stream, and expanding a portion to produce a hydrogen refrigeration stream, cooling a second hydrogen stream thereby producing a cool hydrogen stream, wherein at least a portion of the refrigeration is provided by a nitrogen refrigeration stream, further cooling at least a portion of the cool hydrogen stream thereby producing a cold hydrogen stream, and a warm hydrogen refrigeration stream wherein at least a portion of the refrigeration is provided by the hydrogen refrigeration stream, compressing the warm hydrogen refrigeration stream, mixing the balance of the compressed first hydrogen stream with a high-pressure gaseous nitrogen stream to form an ammonia synthesis gas stream, and wherein the first hydrogen stream and the warm hydrogen refrigeration stream are compressed in the same compressor. r- I LO - I * * I0 (N t.0 o (N: I n * * 212 * . I I * * -0 00* LrL. m ...

Increasing efficiency in an LNG production system by pre-cooling a natural gas feed stream

Described herein are systems and processes to produce liquefied natural gas (LNG) using liquefied nitrogen (LIN) as the refrigerant. Greenhouse gas contaminants are removed from the LIN using a greenhouse gas removal unit. The LNG is compressed prior to being cooled by the LIN.

Industrial and hydrocarbon gas liquefaction

A method for liquefaction of industrial gases or gas mixtures (hydrocarbon and/or non-hydrocarbon) uses a modified aqua-ammonia absorption refrigeration system (ARP) that is used to chill the gas or gas mixture during the liquefaction process. The gas may be compressed to above its critical point, and the heat of compression energy may be recovered to provide some or all of the thermal energy required to drive the ARP. The method utilizes a Joule Thomson (JT) adiabatic expansion process which results in no requirement for specialty cryogenic rotating equipment. The aqua-ammonia absorption refrigeration system includes a vapour absorber tower (VAT) which permits the recovery of some or all of the heat of solution and heat of condensation energy in the system when anhydrous ammonia vapour is absorbed into a subcooled lean aqua-ammonia solution. The modified ARP with VAT may achieve operating pressures as low as 10 kPa which results in ammonia gas chiller operating temperatures as low as - ...

METHOD TO CONDENSE AND RECOVER CARBON DIOXIDE FROM FUEL CELLS

LIQUEFACTION AND REGASIFICATION OF A GAS,IN PARTICULAR NATURAL GAS

PROCESS AND INSTALLATION FOR THE TREATMENT OF A STORAGE SITE

INCORPORATED CASCADE COOLING CYCLE FOR LIQUEFYING A GAS BY REGASIFYING LIQUEFIED NATURAL GAS

METHOD AND SYSTEM FOR COOLING A HYDROCARBON STREAM USING A GAS PHASE REFRIGERANT

Described herein are methods and systems for the liquefaction of a natural gas stream using a refrigerant comprising methane or a mixture of methane and nitrogen. The methods and systems use a refrigeration circuit and cycle that employs one or more turbo-expanders to expand one or more streams of gaseous refrigerant to provide one or more streams of at least predominantly gaseous refrigerant that are used to provide refrigeration for liquefying and/or precooling the natural gas, and a J-T valve to expand down to a lower pressure a stream of liquid or two-phase refrigerant to provide a vaporizing stream of refrigerant that provides refrigeration for sub-cooling.

METHOD FOR RECOVERING LPG BOIL OFF GAS USING LNG AS A HEAT TRANSFER MEDIUM

COOLING OF A VAPORISED CONTENT OF A LIQUEFIED GAS FOR THE PURPOSE OF POWERING MACHINERY, PLANTS OR VEHICLES

Disclosed is a fuel system (1) for a liquefied gas drive system. The fuel system has a liquefied gas tank (21) and a cooling system (10) for the vaporised content of liquefied gas, which comprises a liquid nitrogen tank (11), a nitrogen pump (12), a heat exchanger (13), and a nitrogen cooler (14), which are connected to each other in a pipework circuit. The heat exchanger (13) is arranged in the interior of the liquefied gas tank (21). Also disclosed are a vehicle, a plant and a machine, in each case with a fuel system (1), and a method for cooling the vaporised content of liquefied gas of a liquefied gas drive system.

INTEGRATED REFUELING SYSTEM FOR VEHICLES

An integrated refueling system comprises a fluid circuit including multiple flow paths for directing natural gas to a natural gas liquefier. A portion of the resulting liquefied natural gas is provided to a liquefied natural gas delivery location. Another portion of the liquefied natural gas may be provided to a compressor and subsequently a heat exchanger/vaporizer to produce compressed natural gas. The heat exchanger/vaporizer may utilize the lower temperature of liquefied natural gas to precool incoming gaseous natural gas while simultaneously vaporizing the pressurized, liquefied natural gas to form the compressed natural gas. Compressed natural gas may be provided at a compressed natural gas delivery location.

Process for Producing Methane-Rich Liquid

Apparatus for storing multiple component low temperature liquid

Carbon dioxide condensation and trapping system

Process for liquefying hydrogen

The invention relates to a process for liquefying hydrogen. To reduce the specific energy consumption, the following process steps are used: a) the precooling of the hydrogen stream by indirect heat exchange against a pressurized LNG stream to a temperature of between 140 and 130 K, b) the precooling of the hydrogen stream by indirect heat exchange against a coolant to a temperature of between 85 and 75 K, c) where the precooling of the coolant takes place against a pressurized LNG stream, and d) the cooling and at least partial liquefaction of the precooled hydrogen stream takes place by indirect heat exchange against another hydrogen stream channeled through a closed cooling circuit, e) where the precooling of the condensed hydrogen stream, which is channeled through a closed cooling circuit, takes place against a pressurized LNG stream.

Proceeded of liquid production of nitrogen and liquid methane gasification

PROCESS AND INSTALLATION OF PURGING AND INERTAGE OF TANK

REFRIGERATING DEVICE, FOR EXAMPLE FOR A SYSTEM FOR PRODUCING LIQUEFIED GAS, COMPRISING AT LEAST ONE ROTATING MACHINE HAVING A GAS SEAL

Ce dispositif de réfrigération présente un circuit de réfrigération comportant : - au moins un étage de compression (C1, C2, C3), - un étage de détente (16) et un échangeur thermique (8), - un réservoir (22) de liquide réfrigérant, - un point d'injection (24) de liquide réfrigérant disposé en aval du(des) étage(s) de compression (C1, C2, C3) et en amont de l'échangeur thermique (8), ledit point d'injection (24) étant alimenté à partir du réservoir (22) de fluide réfrigérant, au moins une machine tournante avec un joint à gaz étant présente dans les étages de compression et de détente. Application à un système de production de gaz naturel liquéfié.

PROCEDE ET DISPOSITIF POUR LE DETOURNEMENT DE GAZ S'ECHAPPANT D'UN RESERVOIR D'ENTREPOSAGE EN CAS D'INCIDENT

PROCEDE ET DISPOSITIF POUR LE DETOURNEMENT DE GAZ S'ECHAPPANT EN 12 D'UN RESERVOIR D'ENTREPOSAGE 10 EN CAS D'INCIDENT OU DE LIQUIDES SE VOLATILISANT A L'ECOULEMENT, LE GAZ QUI SORT ETANT REFROIDI EN 13 AU-DESSOUS DE SON POINT D'EBULLITION AU MOYEN D'ANHYDRIDE CARBONIQUE LIQUIDE OU D'UN GAZ A BAS POINT D'EBULLITION LIQUIDE, ET ETANT DIRIGE VERS UN RESERVOIR RECEPTEUR 15 A L'ETAT LIQUIDE DANS LEQUEL IL PREND MOINS DE PLACE.

METHOD AND SYSTEM FOR PROCESSING GAS FROM A GAS STORAGE FACILITY FOR A CARRYING VESSEL

L'invention concerne un procédé et un système de traitement de gaz d'une installation (2) de stockage de gaz, en particulier embarquée sur un navire, le procédé comprenant les étapes suivantes: - une extraction d'un premier gaz (4a, 4b, 5a, 5b,) à l'état liquide d'une première cuve (4) ou premier réservoir (5 ; 500), - un premier sous-refroidissement du premier gaz à l'état liquide, et - un stockage du premier gaz à l'état liquide sous-refroidi en partie inférieure de la première cuve (4) ou du premier réservoir (5 ; 500) ou d'une seconde cuve ou d'un second réservoir de manière à constituer une couche de réserve de froid (4c, 5c, 500c) du premier gaz à l'état liquide au fond de la première ou seconde cuve (4) ou du premier ou second réservoir (5 ; 500). The invention relates to a method and a system for treating gas in a gas storage installation (2), in particular on a ship, the method comprising the following steps: - extraction of a first gas (4a, 4b, 5a, 5b) in the liquid state of a first tank (4) or first tank (5; 500), a first subcooling of the first gas in the liquid state, and a storage of the first gas in the liquid state subcooled in the lower part of the first tank (4) or the first tank (5; 500) or a second tank or a second tank so as to form a cold reserve layer (4c, 5c, 500c) of the first gas in the liquid state at the bottom of the first or second tank (4) or the first or second tank (5; 500).

Liquefaction of natural gas

CYCLE FR

Biogas purification and liquefaction by combining a crystallization system with a liquefaction exchanger

HYBRID METHOD FOR LIQUEFYING A COMBUSTIBLE GAS AND AIR IS PUMPED INTO A ŒUVRE

La présente invention concerne un procédé de liquéfaction d'un gaz combustible à forte teneur en méthane, qui est un procédé hybride entre un procédé à détente et un procédé à cycle ouvert classique. Plus précisément, le procédé selon l'invention comprime en premier lieu le medium de froid puis, dans un premier temps, utilise sa vaporisation comme pouvoir refroidissant, et le détend dans un deuxième temps pour générer du froid supplémentaire. La présente invention concerne également un procédé permettant la mise en œuvre du procédé selon l'invention.

PROCESS FOR LIQUEFYING HYDROGEN

The invention relates to a process for liquefying hydrogen. To reduce the specific energy consumption, the following process steps are used: a) the precooling of the hydrogen stream by indirect heat exchange against a pressurized LNG stream to a temperature of between 140 and 130 K, b) the precooling of the hydrogen stream by indirect heat exchange against a coolant to a temperature of between 85 and 75 K, c) where the precooling of the coolant takes place against a pressurized LNG stream, and d) the cooling and at least partial liquefaction of the precooled hydrogen stream takes place by indirect heat exchange against another hydrogen stream channeled through a closed cooling circuit, e) where the precooling of the condensed hydrogen stream, which is channeled through a closed cooling circuit, takes place against a pressurized LNG stream. © KIPO & WIPO 2009 ...

METHODS AND APPARATUS FOR LIQUEFACTION OF NATURAL GAS

A liquefaction unit that may include a first treating unit, a second treating unit, a liquefaction heat exchanger, a changeover unit, a liquid nitrogen tank, an LNG product storage tank, and a pressure build unit. During a first operating phase, the associated piping defines a first operating phase flow path for natural gas from the natural gas inlet stream to the first treating unit to the liquefaction unit to the LNG product stream, and a first operating phase flow path for nitrogen from the liquid nitrogen stream to the liquefaction unit to the second treating unit. During a second operating phase, the associated piping defines a second operating phase flow path for natural gas from the natural gas inlet stream to the second treating unit to the liquefaction unit to the LNG product stream, and a first operating phase flow path for nitrogen from the liquid nitrogen stream to the liquefaction unit to the first treating unit. During a changeover operating phase, the associated piping defines a changeover flow path for the natural gas from the natural gas inlet stream to the changeover treating unit to the liquefaction unit to the LNG product stream.

SYSTEMS AND METHODS FOR RE-CONDENSATION OF BOIL-OFF GAS

A system in one embodiment includes a heat exchanger, a detection unit, and a controller. The heat exchanger includes a first passage and a second passage configured for exchange of heat therebetween. The first passage is configured to receive a boil-off gas stream of a first cryogenic fluid. The second passage is configured to receive a liquid stream of a second cryogenic fluid. The detection unit is configured to detect a characteristic of the boil-off gas stream. The controller is configured to, responsive to information acquired from the detection unit corresponding to the characteristic, control the flow of the second cryogenic fluid to provide sufficient exchange of heat from the boil-off gas stream via the heat exchanger to condense at least a portion of the boil-off gas stream. A liquid stream of the first cryogenic fluid is output from the first passage and returned to a first tank.

REFRIGERATION METHOD, AND CORRESPONDING COLD BOX AND CRYOGENIC EQUIPMENT

Embodiments of the present invention relate to a refrigeration method, during which a user is supplied with frigories by means of a working gas, such as helium, that is cooled by having the same flow into a cold box that comprises, in series, at least one first aluminum heat exchanger having brazed plates and flanges, one second heat exchanger having welded plates, and one third aluminum heat exchanger having brazed plates and flanges in such a way that the flow of said working gas is at least partially caused to pass, consecutively, through the first exchanger, then through the second exchanger, and finally through the third exchanger before said working gas flow is directed to the user in order to supply the user with frigories.

METHOD AND DEVICE FOR PRODUCING SLUSH FROM LIQUEFIED GAS

Moving thermal bed to time shift liquifaction and vaporization

A method to store and utilize thermal energy is provided. During a first phase, transferring heat from the heat relocation media to the lower temperature reservoir, transferring heat from the higher temperature stream to the heat relocation media, and transferring heat from the heat relocation media to the high temperature reservoir, thereby at least partially liquefying the higher temperature stream. During a second phase, transferring heat from the higher temperature reserve to the heat relocation media, transferring heat from the heat relocation media to the lower temperature stream, and transferring heat from the heat relocation media to the lower temperature reservoir, thereby at least partially vaporizing the lower temperature stream.

Apparatus for storing hydrogen and magnetic energy and a method for the operation of said apparatus

An apparatus for storing hydrogen and magnetic energy includes a storage tank for liquefied hydrogen with an inlet line for compressed hydrogen and an outlet line for hydrogen at a relatively low pressure. The apparatus includes a superconducting magnetic energy store, which comprises a magnetic coil relative to which electrical energy can be supplied or withdrawn via power supply lines to the magnet coil, the energy being located in a cryogenic tank provided with a cooling device and being held at operating temperature. The storage tank for liquefied hydrogen includes cooling device, at least one regenerator, with a heat-absorbing and heat-emitting storage medium, a warm side and a cold side. From the warm side, the compressed hydrogen and, from the cold side, liquefied hydrogen can be supplied from the storage tank for liquefied hydrogen. A relief valve is located in the field region of the at least one magnet coil. The relief valve is connected to the cold side of the regenerator so the compressed hydrogen, having passed through the regenerator, can be fed into the relief valve and, owing to the pressure relief, can be supplied, at least partially as liquefied hydrogen to the storage tank for liquefied hydrogen.

RAW MATERIAL GAS LIQUEFYING DEVICE AND METHOD OF CONTROLLING THIS RAW MATERIAL GAS LIQUEFYING DEVICE

A raw material gas liquefying device includes a feed line which feeds a raw material gas, a refrigerant circulation line which circulates a refrigerant, the refrigerant circulation line including an expansion unit of a turbine type which expands the refrigerant to generate cryogenic energy, and an expansion unit entrance valve provided at an entrance side of the expansion unit, a heat exchanger which exchanges heat between the raw material gas and the refrigerant, a cooler which performs initial cooling of the raw material gas and the refrigerant by heat exchange with liquid nitrogen, and a controller which manipulates the opening rate of the expansion unit entrance value and performs a feedback control so that the rotation speed of the expansion unit reaches a predetermined target value, and outputs the opening rate command to the expansion unit entrance valve, at start-up and stop of the expansion unit. 1. raw material gas liquefying device comprising:a feed line which feeds a raw material gas whose boiling temperature is lower than a boiling temperature of nitrogen;a refrigerant circulation line which circulates a refrigerant for cooling the raw material gas, the refrigerant circulation line including an expansion unit of a turbine type which expands the refrigerant to generate cryogenic energy, and an expansion unit entrance valve provided at an entrance side of the expansion unit;a heat exchanger which exchanges heat between the raw material gas and the refrigerant;a cooler which performs initial cooling of the raw material gas and the refrigerant by heat exchange with liquid nitrogen;an expansion unit rotation speed sensor which detects a rotation speed of the expansion unit; anda controller which generates an opening rate command for the expansion unit entrance valve by performing a feedback control so that the rotation speed of the expansion unit reaches a predetermined target value, and outputs the opening rate command to the expansion unit entrance valve, ...

Liquefied Natural Gas Production System and Method With Greenhouse Gas Removal

Described herein are systems and processes to produce liquefied natural gas (LNG) using liquefied nitrogen (LIN) as the refrigerant. Greenhouse gas contaminants are removed from the LIN using a greenhouse gas removal unit.

LIQUID HYDROGEN PRODUCTION FACILITY AND HYDROGEN GAS PRODUCTION FACILITY

A reformer configured to generate hydrogen gas by reforming a hydrocarbon; a hydrogen liquefier configured to generate liquid hydrogen by liquefying the hydrogen gas; a reservoir for storing the liquid hydrogen; and a heat exchanger configured to cause heat exchange between boil-off gas that occurs in the reservoir and carbon dioxide that occurs during a process of generating the hydrogen gas to liquefy the carbon dioxide. 1. A liquid hydrogen production facility comprising:a reformer configured to generate hydrogen gas by reforming a hydrocarbon;a hydrogen liquefier configured to generate liquid hydrogen by liquefying the hydrogen gas;a reservoir for storing the liquid hydrogen; anda heat exchanger configured to cause heat exchange between boil-off gas that occurs in the reservoir and carbon dioxide that occurs during a process of generating the hydrogen gas to liquefy the carbon dioxide.2. A liquid hydrogen production facility comprising:a reformer configured to generate hydrogen gas by reforming a hydrocarbon;a hydrogen liquefier configured to generate liquid hydrogen by liquefying the hydrogen gas by cooling the hydrogen gas with use of heat of vaporization of liquid nitrogen; anda heat exchanger configured to cause heat exchange between nitrogen gas that is discharged from the hydrogen liquefier and carbon dioxide that occurs during a process of generating the hydrogen gas to liquefy the carbon dioxide.3. The liquid hydrogen production facility according to claim 1 , whereinthe hydrocarbon is methane contained in liquefied natural gas as a major component.4. The liquid hydrogen production facility according to claim 1 , whereinthe reformer reforms the hydrocarbon by steam reforming.5. A hydrogen gas production facility comprising:a reformer configured to generate hydrogen gas by reforming a hydrocarbon;a reservoir for storing liquid hydrogen supplied from outside; anda heat exchanger configured to cause heat exchange between boil-off gas that occurs in the ...

Methods and systems for integration of industrial site efficiency losses to produce lng and/or lin

A method includes receiving input corresponding to a proposed configuration of a liquefaction facility and identifying a plurality of components utilized to produce LNG and/or LIN at the facility. The method includes determining an alternative configuration that is different from the proposed configuration. Determining the alternative configuration may include identifying resources accessible to a proposed location for the liquefaction facility and whether at least one of the resources accessible to the proposed location corresponds to a resource generated by a component identified by the proposed configuration, and determining whether to omit at least one component of the plurality of components identified by the proposed configuration. The method includes omitting the at least one component from the alternative configuration, and generating a report based on the proposed configuration and the alternative configuration. The report includes information indicating a difference between the proposed configuration and the alternative configuration.

Cooling of a vaporized content of a liquefied gas for the purpose of powering machinery, plants or vehicles

A fuel system for a liquefied gas drive system. The fuel system has a liquefied gas tank and a cooling system for the vaporized content of liquefied gas, which comprises a liquid nitrogen tank, a nitrogen pump, a heat exchanger, and a nitrogen cooler, which are connected to each other in a pipework circuit. The heat exchanger is arranged in the interior of the liquefied gas tank. Also disclosed are a vehicle, a plant and a machine, in each case with a fuel system, and a method for cooling the vaporized content of liquefied gas of a liquefied gas drive system. 1. A fuel system for a liquefied gas drive system , comprising:a liquefied gas tank; and wherein the cooling system comprises a liquid nitrogen tank, a nitrogen pump, a heat exchanger, and a nitrogen cooler, which are connected to each other in a pipework circuit, and', 'wherein the heat exchanger is arranged in an interior of the liquefied gas tank., 'a cooling system,'}2. The fuel system in accordance with claim 1 , wherein the heat exchanger has a multiplicity of cooling tubes through which nitrogen can be fed.3. The fuel system in accordance with claim 2 , wherein the multiplicity of cooling tubes comprises at least two cooling tubes claim 2 , at least sections of which extend along a respective ring about a common central axis.4. The fuel system in accordance with claim 1 , further comprising at least one extraction system with a flue claim 1 , to which the liquefied gas tank is connected via at least one pipe.5. The fuel system in accordance with claim 4 , wherein the at least one extraction system comprises at least one burner to flare discharged gas.6. The fuel system in accordance with claim 4 , further comprising a nitrogen purge system to feed nitrogen into the extraction system.7. The fuel system in accordance with claim 1 , further comprising a pressurization system for the liquefied gas tank claim 1 , which comprises a vaporization heat exchanger to vaporize liquefied gas from the liquefied gas ...

Heat Exchanger Configuration for a High Pressure Expander Process and a Method of Natural Gas Liquefaction using the Same

A method for liquefying a feed gas stream. A compressed first refrigerant stream is cooled and expanded to produce an expanded first refrigerant stream. The feed gas stream is cooled to within a first temperature range by exchanging heat only with the expanded first refrigerant stream to form a liquefied feed gas stream and a warmed first refrigerant stream. A compressed second refrigerant stream is provided is cooled to produce a cooled second refrigerant stream. At least a portion of the cooled second refrigerant stream is further cooled by exchanging heat with the expanded first refrigerant stream, and then is expanded to form an expanded second refrigerant stream. The liquefied feed gas stream is cooled to within a second temperature range by exchanging heat with the expanded second refrigerant stream to form a sub-cooled LNG stream and a first warmed, second refrigerant stream. 1. A method for liquefying a feed gas stream rich in methane using a first refrigeration system having a first refrigerant and a second refrigeration system using a second refrigerant , the method comprising:a. providing the feed gas stream at a pressure less than 1,200 psia;b. providing a compressed first refrigerant stream with a pressure greater than or equal to 1,500 psia, wherein the first refrigerant comprises the compressed first refrigerant stream;c. cooling the compressed first refrigerant stream by indirect heat exchange with an ambient temperature air or water, to produce a cooled first refrigerant stream;d. expanding the cooled first refrigerant stream in at least one work producing expander, thereby producing an expanded first refrigerant stream;e. cooling the feed gas stream to within a first temperature range by exchanging heat only with the expanded first refrigerant stream to form a liquefied feed gas stream and a warmed first refrigerant stream;f. providing a compressed second refrigerant stream, comprising the second refrigerant, and cooling the compressed second ...

Method for Energy Storage with Co-production of Peaking Power and Liquefied Natural Gas

A method for energy storage with co-production of peaking power and liquefied natural gas (LNG) which integrates the processes of liquid air energy storage and reduction in pressure of natural gas through expander at the co-located city gate station and includes consumption of excessive power from the grid, mechanical power of the natural gas expander and cold thermal energy of expanded natural gas for charging the storage with a liquid air during off-peak hours and production of peaking (on-demand) power by the expanders of natural gas and highly-pressurized re-gasified air with recovering the cold thermal energy of expanded natural gas and regasified liquid air for liquefying a part of delivered natural gas at the city gate station and energy storage facility.

Thermal performing refrigeration cycle

An improved refrigeration cycle is provided. The cycle provides for improved thermal performance by incorporating a refrigerant makeup tank that introduces liquid refrigerant with expanded refrigerant upstream of the heat exchanger, thereby providing a savings in either electricity costs or refrigerant.

Offshore liquefaction process without compression

A process for producing liquid oxygen, including an offshore platform the system including cooling a high-pressure nitrogen gas stream in a main heat exchanger, thereby producing a cooled high-pressure nitrogen gas stream, expanding the cooled high-pressure nitrogen gas stream in a turbo-expander, thereby producing a cold low-pressure nitrogen gas stream, warming the cold low-pressure nitrogen gas stream by indirect heat exchange with a high-pressure gaseous oxygen stream, thereby producing a liquefied oxygen stream and a warm low-pressure nitrogen gas stream, wherein, at least a portion of the warm low-pressure nitrogen gas stream is vented to the atmosphere.

System for converting gaseous fuel into liquid fuel

A system for converting gaseous fuel into liquid fuel is provided. The system may have a combustor configured to receive a supply of gaseous fuel. The system may also have a gas compressor configured to direct gaseous fuel from the supply into the combustor. The system may also have an air compressor configured to direct compressed air into the combustor, and a turbine in fluid communication with an outlet of the combustor. The turbine may be connected to drive the gas compressor and the air compressor. The system may also have at least one heat exchanger in fluid communication with an outlet of the gas compressor and an outlet of the air compressor. The system may also have at least one expander in fluid communication with an outlet of the at least one heat exchanger. The system may also have a condenser in fluid communication with an outlet of the at least one expander.

Partial open-loop nitrogen refrigeration process and system for an oil or gas production operation

A method for cooling a hydrocarbon production stream such as natural gas uses cryogenic nitrogen as a cooling medium (“refrigerant”) wherein only a portion of a nitrogen refrigerant stream is recovered, with a vapor portion of the nitrogen refrigeration stream being vented from the system. Unlike a conventional sacrificial nitrogen refrigeration process which vents all the nitrogen refrigerant after cooling a production stream, the method comprise means for recovering some of the nitrogen refrigerant thereby improving the operating efficiency of the process compared to conventional sacrificial nitrogen refrigeration processes. Also unlike conventional closed loop nitrogen refrigeration processes which recover all of the nitrogen refrigerant after cooling a production stream, the method can recover nitrogen refrigerant without the complex and costly equipment used in closed loop systems to compress nitrogen vapor.

SYSTEM AND METHOD FOR PRECOOLING IN HYDROGEN OR HELIUM LIQUEFACTION PROCESSING

Described herein are systems and processes for precooling hydrogen or helium gas streams for liquefaction using liquid nitrogen having reduced energy consumption and amount of liquid nitrogen usage. The systems include a stream of pressurized liquid nitrogen, at least one turboexpander, and at least one heat exchanger. 1. A method for precooling hydrogen or helium gas using a liquid nitrogen stream , the method comprising:a. providing a pressurized liquid nitrogen stream containing liquid nitrogen at a pressure between about 15 bar(a) and about 70 bar(a);b. passing the pressurized liquid nitrogen stream and a partially-cooled hydrogen or helium gas stream through a first heat exchanger that exchanges heat between the pressurized liquid nitrogen stream and the partially-cooled hydrogen or helium gas stream to provide a first partially-warmed nitrogen stream and a precooled hydrogen or helium gas stream;c. passing the first partially-warmed nitrogen stream through one or more turboexpanders that lowers the temperature and pressure of the partially-warmed nitrogen stream to provide a cold nitrogen stream; andd. passing the cold nitrogen stream through the first heat exchanger and through a second heat exchanger to provide the precooled hydrogen or helium gas stream, and a fully-warmed nitrogen gas stream.2. The method of claim 1 , wherein step (d) comprises: passing the cold nitrogen stream through the first heat exchanger that exchanges heat between the cold nitrogen stream and the partially-cooled hydrogen or helium gas stream to provide a second partially-warmed nitrogen gas stream and the precooled hydrogen or helium gas stream; and passing the second partially-warmed nitrogen gas stream through the second heat exchanger that exchanges heat between the second partially-warmed nitrogen gas stream and a warm hydrogen or helium gas stream to provide a fully-warmed nitrogen gas stream and the partially-cooled hydrogen or helium gas stream.3. The method of claim 2 , ...

Method of Natural Gas Liquefaction on LNG Carriers Storing Liquid Nitrogen

A method for producing liquefied natural gas (LNG). A natural gas stream is transported to a liquefaction vessel. The natural gas stream is liquefied on the liquefaction vessel using at least one heat exchanger that exchanges heat between the natural gas stream and a liquid nitrogen stream to at least partially vaporize the liquefied nitrogen stream, thereby forming a warmed nitrogen gas stream and an at least partially condensed natural gas stream comprising LNG. The liquefaction vessel includes at least one tank that only stores liquid nitrogen and at least one tank that only stores LNG. 1. A method for producing liquefied natural gas (LNG) , comprising:transporting a natural gas stream to a liquefaction vessel;liquefying the natural gas stream on the liquefaction vessel using at least one heat exchanger that exchanges heat between the natural gas stream and a liquid nitrogen stream to at least partially vaporize the liquefied nitrogen stream, thereby forming a warmed nitrogen gas stream and an at least partially condensed natural gas stream comprising LNG;wherein the liquefaction vessel includes at least one tank that only stores liquid nitrogen and at least one tank that only stores LNG.2. The method of claim 1 , further comprising:obtaining the natural gas stream from a floating production unit (FPU) vessel that produces natural gas from a reservoir and treats the produced natural gas to remove at least one of water, heavy hydrocarbons, and sour gases therefrom prior to transporting the natural gas stream to the liquefaction vessel.3. The method of claim 2 , further comprising:transporting the warmed nitrogen gas stream to the FPU vessel; andusing the warmed nitrogen gas stream within a process on the FPU vessel.4. The method of claim 3 , further comprising:compressing the warmed nitrogen gas stream on the FPU; andinjecting the compressed warmed nitrogen gas stream into a reservoir for pressure maintenance.5. The method of claim 1 , further comprising:reducing ...

Method for Exhaust Waste Energy Recovery at the Reciprocating Gas Engine-based Polygeneration Plant

A method for exhaust waste energy recovery at the reciprocating gas engine-based polygeneration plant which includes supplying this plant with any on-site available methaneous gas, converting from 15 to 30% of supplied gas into electric or mechanical power and producing a liquefied methaneous gas (LMG) co-product from the other 85-70% of supplied gas, and thereby obviates a need for any specialized refrigeration equipment, refrigerants and fuel for LMG co-production at a rate of 0.4-0.6 ton/h for each MW of engine output and makes possible to increase the LMG co-production rate up to 0.9-1.1 t/MWh at the sacrifice of a fuel self-consumption minimized down to 1-2% of the amount of gas intended for liquefaction.

Increasing Efficiency in an LNG Production System by Pre-Cooling a Natural Gas Feed Stream

Described herein are systems and processes to produce liquefied natural gas (LNG) using liquefied nitrogen (LIN) as the refrigerant. Greenhouse gas contaminants are removed from the LIN using a greenhouse gas removal unit. The LNG is compressed prior to being cooled by the LIN.

SYSTEM AND METHOD FOR LIQUEFYING PRODUCTION GAS FROM A GAS SOURCE

A system for liquefying production gas from a gas source containing a fluid having C1-C12 entrained gases includes a first phase separator for separating the C1-C12 gases from the fluid from the gas source. The first phase separator has an inlet in fluid communication with the gas source, a gas outlet and at least one alternative outlet. A first cryogenic liquefaction vessel has an inlet and an outlet. The inlet is in fluid communication with the gas outlet of the first phase separator. The first cryogenic liquefaction vessel cools the C1-C12 gases to liquefy the C3-C12 petroleum gases. A second phase separator is provided for separating the C3-C12 liquefied gases from the C1-C2 gases. The second phase separator has an inlet, a liquid outlet and a gas outlet. The inlet is in fluid communication with the outlet of the first cryogenic liquefaction vessel. At least one storage vessel is provided in fluid communication with the liquid outlet of the second phase separator for collection of the liquefied C3-C12 petroleum gases. 1. A method for liquefying production gas from a gas source , comprising the steps of:introducing a flow stream from the gas source into a first phase separator to separate the C1-C12 production gases from the flow stream;passing the gas through a first stage of cryogenic liquefaction, the first stage of cryogenic liquefaction cooling the gas to create a fluid containing liquefied C3-C12 petroleum gas and a gaseous C1-C2 natural gas;passing the fluid containing liquefied C3-C12 petroleum gas and the gaseous C1-C2 natural gas through a second phase separator to separate the liquefied C3-C12 petroleum gas from the gaseous C1-C2 natural gas;collecting the liquefied C3-C12 petroleum gas into at least one liquefied petroleum gas storage vessel.2. The method of claim 1 , further comprising the steps of passing the gaseous C1-C2 natural gas through a second stage of cryogenic liquefaction for liquefying the gaseous C1-C2 natural gas and collecting the ...

Hydraulic Turbine Between Middle and Cold Bundles of Natural Gas Liquefaction Heat Exchanger

A system and method for liquefying a natural gas stream, including a liquefaction heat exchanger having at least three cooling bundles and arranged such that the natural gas stream passes sequentially therethrough. A first cooling bundle condenses heavy hydrocarbon components in the natural gas stream. A second cooling bundle liquefies the natural gas stream. A third cooling bundle sub-cools the LNG stream. A hydraulic turbine has an inlet operationally connected to an outlet of the second cooling bundle, and an outlet operationally connected to an inlet of the third cooling bundle. The hydraulic turbine cools the LNG stream and reduces the pressure of the LNG stream to form a reduced-pressure LNG stream. 1. A system for liquefying a natural gas stream , comprising:a liquefaction heat exchanger having at least three cooling bundles and arranged such that the natural gas stream passes sequentially therethrough, includinga first cooling bundle configured to condense heavy hydrocarbon components in the natural gas stream,a second cooling bundle configured to liquefy the natural gas stream, the second cooling bundle having an outlet for passing an LNG stream therethrough, anda third cooling bundle having an inlet to receive the LNG, the third cooling bundle configured to sub-cool the LNG stream; anda hydraulic turbine having an inlet operationally connected to the outlet of the second cooling bundle and an outlet operationally connected to the inlet of the third cooling bundle, the hydraulic turbine configured to cool the LNG stream and reduce a pressure of the LNG stream to form a reduced-pressure LNG stream.2. The system of claim 1 , further comprising:a first set of one or more sensors situated to sense at least one of a pressure and a temperature of the LNG stream prior to entering the hydraulic turbine; anda second set of one or more sensors situated to sense at least one of a pressure and a temperature of the LNG stream as the LNG stream exits the hydraulic ...

Liquid natural gas liquefier utilizing mechanical and liquid nitrogen refrigeration

The present invention relates to a method and system for producing liquefied natural gas (LNG) from a stream of pressurized natural gas which involves a combination of mechanical refrigeration.

CLOSED CYCLE CRYOGEN RECIRCULATION SYSTEM AND METHOD

There is provided refrigeration system () and method for remote cooling of a thermal load having a first portion () and a second portion (). The system comprises a cold source () having a first cooling stage () and a second cooling stage (), the temperature of the first cooling stage being higher than the temperature of the second cooling stage. The system also comprises a cryogen circuit for circulation of a cryogen flow in a closed cycle, the closed cycle being thermally coupled to the cold source. The system further comprises a compressor () for compressing and circulating the cryogen flow in the cryogen circuit. The cryogen circuit comprises a first conduit for thermally connecting the first cooling stage of the cold source to the first portion of the thermal load so as to cool said first portion towards the temperature of the first cooling stage, and a second conduit for thermally connecting the second cooling stage of the cold source to the second portion of the thermal load so as to cool said second portion to wards the temperature of the second cooling stage. The cryogen flow in the system is a sub-cooled or saturated liquid, two phase, saturated or overheated, supercritical gas helium flow. 112725. A refrigeration system () for remote cooling of a thermal load having a first portion () and a second portion () , the system comprising:{'b': 4', '5', '6, 'a cold source () having a first cooling stage () and a second cooling stage (), the temperature of the first cooling stage being higher than the temperature of the second cooling stage;'}a cryogen circuit for circulation of a cryogen flow in a closed cycle, the closed cycle being thermally coupled to the cold source; and{'b': '7', 'a compressor () for compressing and circulating the cryogen flow in the cryogen circuit,'}wherein the cryogen circuit comprises a first conduit for thermally connecting the first cooling stage of the cold source to the first portion of the thermal load so as to cool said first ...

Method and System for Cooling a Hydrocarbon Stream Using a Gas Phase Refrigerant

Described herein are methods and systems for the liquefaction of a natural gas feed stream using a refrigerant comprising methane. The methods and systems use a refrigeration circuit and cycle that employs two or more turbo-expanders to expand two or more streams of gaseous refrigerant down to different pressures to provide cold streams of at least predominantly gaseous refrigerant at different pressures that are used to provide refrigeration for precooling and liquefying the natural gas. The resulting liquefied natural gas stream is then flashed to produce an LNG product and a flash gas, the flash gas being recycled to the natural gas feed stream.

LARGE-SCALE HYDROGEN LIQUEFACTION BY MEANS OF A HIGH PRESSURE HYDROGEN REFRIGERATION CYCLE COMBINED TO A NOVEL SINGLE MIXED-REFRIGERANT PRECOOLING

The present invention relates to a method for liquefying hydrogen, the method comprises the steps of: cooling a feed gas stream comprising hydrogen with a pressure of at least 15 bar(a) to a temperature below the critical temperature of hydrogen in a first cooling step yielding a liquid product stream. According to the invention, the feed gas stream is cooled by a closed first cooling cycle with a high pressure first refrigerant stream comprising hydrogen, wherein the high pressure first refrigerant stream is separated into at least two partial streams, a first partial stream is expanded to low pressure, thereby producing cold to cool the precooled feed gas below the critical pressure of hydrogen, and compressed to a medium pressure, and wherein a second partial stream is expanded at least close to the medium pressure and guided into the medium pressure first partial stream. 2212425. The method according to claim 1 , wherein said first refrigerant stream () is further separated at least into a third partial stream () claim 1 , and optionally a fourth partial stream () claim 1 , wherein{'b': 24', '25', '54', '55', '56', '57', '31', '32, 'said third partial stream (), and optionally said fourth partial stream (), is expanded in a third expansion device (, ), and optionally a fourth expansion device (, ), respectively, yielding a partially expanded third partial stream (), and optionally a partially expanded fourth partial stream (),'}{'b': 31', '30', '32', '33, 'said partially expanded third partial stream () and said partially expanded first partial stream (), and optionally said expanded fourth partial stream (), are merged to form a combined partially expanded partial stream (), and'}{'b': 33', '35', '34, 'said combined partially expanded partial stream () and said partially expanded second partial stream () are merged to form said partially expanded first refrigerant stream ().'}32353292952302922292222. The method according to claim 1 , wherein said first partial ...

INDUSTRIAL AND HYDROCARBON GAS LIQUEFACTION

Liquefaction of industrial gases or gas mixtures (hydrocarbon and/or non-hydrocarbon) uses a modified aqua-ammonia absorption refrigeration system (ARP) to chill the gas or gas mixture during the liquefaction process. The gas is compressed to above its critical point, and the heat of compression energy may be recovered to provide some or all of the thermal energy required to drive the ARP. A Joule Thomson (JT) adiabatic expansion process results in no requirement for specialty cryogenic rotating equipment. The aqua-ammonia absorption refrigeration system includes a vapour absorber tower (VAT) that permits the recovery of some or all of the heat of solution and heat of condensation energy in the system when anhydrous ammonia vapour is absorbed into a subcooled lean aqua-ammonia solution. The modified ARP with VAT may operate at pressures as low as 10 kPa, and the ammonia gas chiller may operate at temperatures as low as −71° C. 1. A method for liquefying a gas comprising the following non-sequential steps:(a) receiving a gas having an inlet pressure and compressing the gas to a desired pressure;(b) chilling the gas through at least one absorption chiller;(c) adiabatically reducing the pressure of the gas to liquefy at least a portion of the gas, and thereby producing a liquefied gas;(d) heating a rich aqua-ammonia fluid in a rectifier to liberate ammonia gas using heat of compression recovered from step (a), producing a lean aqua-ammonia fluid;(e) subcooling the lean aqua-ammonia and circulating to the top of a vapour absorption tower (VAT);(f) condensing ammonia gas from the rectifier and flashing the liquid ammonia to produce chilled ammonia gas for use in the at least one absorption chiller; and(g) absorbing ammonia gas from the at least one absorption chiller into the lean aqua-ammonia in the vapour absorption tower to produce the rich aqua-ammonia fluid for step (d).2. The method of wherein the gas is partially liquefied in step (c) and comprising the further ...

Large-scale hydrogen liquefaction by means of a high pressure hydrogen refrigeration cycle combined to a novel single mixed-refrigerant precooling

The present invention relates to a method for liquefying hydrogen, the method comprises the steps of: cooling a feed gas stream comprising hydrogen with a pressure of at least 15 bar(a) to a temperature below the critical temperature of hydrogen in a first cooling step yielding a liquid product stream. According to the invention, the feed gas stream is cooled by a closed first cooling cycle with a high pressure first refrigerant stream comprising hydrogen, wherein the high pressure first refrigerant stream is separated into at least two partial streams, a first partial stream is expanded to low pressure, thereby producing cold to cool the precooled feed gas below the critical pressure of hydrogen, and compressed to a medium pressure, and wherein a second partial stream is expanded at least close to the medium pressure and guided into the medium pressure first partial stream.

Cryogenic air separation process and apparatus

A low temperature air separation process and apparatus for producing pressurized gaseous product in an air separation unit using a system of distillation columns (10,11) which include cooling a compressed air stream in a heat exchange line (30) to form a compressed cooled air stream, sending at least part of the compressed, cooled air stream to a column of the system, liquefying (60) a process stream (47) to form a first liquid product, storing at least part of the first liquid product in a storage tank (50), sending at least part of the above first liquid product from the storage tank to the air separation unit as one of the feeds (60,61), extracting at least one second liquid product stream from a column of the column system and pressurizing the at least one second liquid product stream (6), vaporizing the above pressurized second liquid product stream to form pressurized gaseous product in the heat exchange line and extracting a cold gas (40) without warming it completely in the heat exchange line.

Method and apparatus for condensing fugitive methane vapors

Fugitive methane or natural gas vapors are recovered from a handling or delivery system and are blown through solid methane chips or a slush of solid and liquid methane. The solid methane melts and cools the vapors below the vaporization temperature to condense them. The condensed vapors and melted solid can be mixed with liquid methane for use therewith. The solid methane is produced by cooling liquid methane or natural gas in a liquid nitrogen heat exchanger or refrigerator. The liquid methane is solidified in a sheet on an endless belt, which breaks the sheet into pieces at a tail section.

Apparatus for storing a multi-component cryogenic liquid

An apparatus for storing a multi-component cryogenic liquid in which headspace vapor in a storage tank is condensed in an external condensation tank through indirect heat exchange with liquid being vented from the storage tank. The resulting condensate can then be re-introduced into the storage tank through a pressure building circuit applied to the external condensation tank. In such manner, the pressure within the storage tank is regulated and the composition of the liquid stored within the storage tank is held with some degree of consistency. The use of an external condensation tank allows prior art cryogenic storage tanks and dewars to be retrofitted to store a multi-component cryogenic liquids.

Process and device for liquefying natural gas and re-liquefying boil-off gas

A process and device for liquefying natural gas and re-liquefying boil-off gas, in which the natural gas to be liquefied an the boil-off gas to be re-liquefied are liquefied or re-liquefied in heat exchange with a heat carrying fluid, preferably liquid nitrogen, and in which the re-liquefaction of boil-off gas takes place only in those periods when the natural gas is not being liquefied. According to the invention, the heat exchanger(s) (E) in which the heat exchange between the heat carrying fluid (10, 11) and the natural gas (1, 2) to be liquefied or the boil-off gas (6, 2) to be re-liquefied takes the form of a double-flow heat exchanger (E) and, during the periods when natural gas is not being liquefied, the supply of natural gas to the heat exchanger(s) (E) is interrupted and the boil-off gas (6, 2) to be re-liquefied is brought into heat-exchange contact with the heat carrying fluid (10, 11).

Process for producing a pressurized methane-rich liquid from a methane-rich gas

A process is disclosed for producing from a pressurized methane-rich gas stream a pressurized methane-rich liquid stream having a temperature above −112° C. (−170° F.) and having a pressure sufficient for the liquid to be at or below its bubble point. In this process, a methane-rich liquid stream having a temperature below about −155° C. (−247° F.) is supplied and its pressure is increased. A pressurized methane-rich gas to be liquefied is supplied and introduced to the pressurized methane-rich liquid stream at a rate that produces a methane-rich liquid stream having a temperature above −112° C. (−170° F.) and a pressure sufficient for the liquid to be at or below its bubble point.

Process and system for reliquefying boil-off gas (BOG)

A reliquefaction system and process for innovative reliquefaction of LNG boil-off gas (BOG), where the reliquefaction is propelled by LNG gas fuel. The reliquefaction system is preferably installed on shipboard including LNG carrier or harbor tug, where the LNG carrier and harbor tug use a gas fuel engine.

System for reliquefying boil-off vapor from liquefied gas

Apparatus and processes for recondensing boil-off vapor from an insulated storage tank containing a liquefied gas, such as liquefied natural gas, so that it continues to comprise a part of the stored liquefied gas. Boil-off vapor is recondensed by refrigeration obtained from expansion of a liquefied gas stream withdrawn from the storage tank. The expanded stream, as a vapor, can be pressurized by feeding it to the suction side of an ejector to which a high pressure gas is fed to supply the motive force. Alternatively, a vapor stream derived from the stored liquefied gas can be fed to a venturi ejector as the motive force to pressurize boil-off vapor fed from the storage tank to the suction side of the ejector. The combined stream from the ejector, after being refrigerated by the withdrawn liquefied gas stream, is expanded to the tank vapor space to cool the tank contents. Under either system, liquefied gas stored at about atmospheric pressure can be vaporized and distributed at a pressure greater than atmospheric pressure.

Apparatus for storing a multi-component cryogenic liquid

System and method for liquefying production gas from a gas source

A system for liquefying production gas from a gas source containing a fluid having C1-C12 entrained gases includes a first phase separator for separating the C1-C12 gases from the fluid from the gas source. The first phase separator has an inlet in fluid communication with the gas source, a gas outlet and at least one alternative outlet. A first cryogenic liquefaction vessel has an inlet and an outlet. The inlet is in fluid communication with the gas outlet of the first phase separator. The first cryogenic liquefaction vessel cools the C1-C12 gases to liquefy the C3-C12 petroleum gases. A second phase separator is provided for separating the C3-C12 liquefied gases from the C1-C2 gases. The second phase separator has an inlet, a liquid outlet and a gas outlet. The inlet is in fluid communication with the outlet of the first cryogenic liquefaction vessel. At least one storage vessel is provided in fluid communication with the liquid outlet of the second phase separator for collection of the liquefied C3-C12 petroleum gases.

System and method for liquefying production gas from a gas source

A method for liquefying production gas from a gas source containing a fluid having C1-C12 entrained gases includes passing the gas through a first stage of cryogenic liquefaction to cool the gas to a temperature between −50 degrees Celsius and −87 degrees Celsius to create a fluid containing a liquefied C3-C12 petroleum gas and a gaseous C1-C2 natural gas. The liquefied C3-C12 petroleum gas and gaseous C1-C2 natural gas are passed through a second phase separator to separate the liquefied C3-C12 petroleum gas from the gaseous C1-C2 natural gas. The liquefied C3-C12 petroleum gas is collected into liquefied petroleum gas storage vessels.

Process to obtain liquefied natural gas

A process to obtain liquefied natural gas (LNG) which comprises the use of air as refrigerant in an open or closed cycle. The invention also refers to a system to carry out said process and uses thereof.

Process to obtain liquefied natural gas

A process to obtain liquefied natural gas (LNG) which comprises the use of air as refrigerant in an open or closed cycle. The invention also refers to a system to carry out said process and uses thereof.

A system and method for liquefying production gas from a gas source

A system for liquefying production gas from a gas source containing a fluid having C1-C12 entrained gases includes a first phase separator for separating the C1-C12 gases from the fluid from the gas source. The first phase separator has an inlet in fluid communication with the gas source, a gas outlet and at least one alternative outlet. A first cryogenic liquefaction vessel has an inlet and an outlet. The inlet is in fluid communication with the gas outlet of the first phase separator. The first cryogenic liquefaction vessel cools the C1-C12 gases to liquefy the C3-C12 petroleum gases. A second phase separator is provided for separating the C3-C12 liquefied gases from the C1-C2 gases. The second phase separator has an inlet, a liquid outlet and a gas outlet. The inlet is in fluid communication with the outlet of the first cryogenic liquefaction vessel. At least one storage vessel is provided in fluid communication with the liquid outlet of the second phase separator for collection of the liquefied C3-C12 petroleum gases.

Methods of storage of cryogenic fluid environments in storage tanks

FIELD: machine engineering. SUBSTANCE: method to maintain the supercooled state of the bottom portion or the natural convective flow of LNG in the storage tank comprises allocating part of the cryogenic fluid cooling portion abstracted cryogenic medium and re-introduction portion abstracted cryogenic fluid back into the fluid reservoir area for storage. Cooling is provided by mechanical cooling. The method of advantageously maintenance of the supercooled state throughout the volume of fluid in the storage tank, comprises allocating the part of the cryogenic fluid of cooling portion abstracted cryogenic medium and re-introduction of abstracted cryogenic fluid portion back into the fluid reservoir area for storage. Cooling is provided by mechanical cooling. EFFECT: exclusion of gas discharge into the tank. 24 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 628 337 C2 (51) МПК F25D 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2014132348, 13.12.2012 (24) Дата начала отсчета срока действия патента: 13.12.2012 (72) Автор(ы): ЛИ Рон (US) (73) Патентообладатель(и): ЛИНДЕ АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: US 3889485 A, 17.06.1972. US Приоритет(ы): (30) Конвенционный приоритет: 6336331 B1, 08.01.2002. RU 2258174 C2, 19.08.2005. KR 0100777560 B1, 20.11.2007. 06.01.2012 US 13/344,824 (45) Опубликовано: 16.08.2017 Бюл. № 23 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 06.08.2014 (86) Заявка PCT: IB 2012/003107 (13.12.2012) (87) Публикация заявки PCT: 2 6 2 8 3 3 7 (43) Дата публикации заявки: 27.02.2016 Бюл. № 6 R U 16.08.2017 2 6 2 8 3 3 7 R U Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) СПОСОБЫ ХРАНЕНИЯ КРИОГЕННЫХ ТЕКУЧИХ СРЕД В РЕЗЕРВУАРАХ ДЛЯ ХРАНЕНИЯ (57) Реферат: Способ поддержания переохлажденного переохлажденного состояния по всему объему ...

천연 가스 공급 스트림을 사전 냉각시킴으로써 lng 생산 시스템에서 효율을 증가시키는 것

액화 질소(LIN)를 냉매로서 사용하여 액화 천연 가스(LNG)를 생산하는 시스템 및 공정이 기재되어 있다. 온실 가스 오염물들이 온실 가스 제거 유닛을 사용하여 LIN으로부터 제거된다. LNG는 LIN에 의해서 냉각되기 전에 압축된다.

기상 냉매를 사용하여 탄화수소 스트림을 냉각하기 위한 개선된 방법 및 시스템

메탄을 포함하는 냉매를 사용하여 천연 가스 스트림을 액화하기 위한 방법 및 시스템이 본원에 기재되어 있다. 이 방법 및 시스템은 천연 가스를 예냉 및 액화하기 위한 냉동을 제공하는데 사용되는 적어도 주로 가스인 냉매의 하나 이상의 스트림들을 상이한 압력에서 제공하기 위해 상이한 압력으로 가스 냉매의 2 이상의 스트림을 팽창시키기 위해 2 이상의 터보-익스팬더를 채택하는 냉동 회로 및 사이클을 이용한다. 결과적으로 액화된 천연 가스 스트림은 그후 플래시되어 LNG 생성물 및 플래시 가스를 생산하고, 플래시 가스는 천연 가스 공급물 스트림으로 리사이클된다.

天然气的液化

本发明描述了将富烃原料馏分优选天然气与氮制冷回路相对地进行液化的方法，其中将原料馏分与待加热的气态氮相对地进行冷却，及将原料馏分与待蒸发的液态氮相对地进行液化。根据本发明，在至少三级的热交换过程(E1a-E1c)中将原料馏分冷却和液化；其中在热交换过程的第一区段(E1a)中将原料馏分(1)与过热的气态氮(9)相对地进行冷却，直至实现基本上完全分离出(D2)较重的成分(2′)；在热交换过程的第二区段(E1b)中将去除了较重成分的原料馏分(2)与待过热的气态氮(9)相对地进行部分液化；及在热交换过程的第三区段(E1c)中将原料馏分(2)与有待部分蒸发的氮(8)相对地进行液化。

Plant for reducing gas and generating a constant amount of liquefied natural gas (options)

FIELD: cryogenic technology. SUBSTANCE: invention relates to cryogenic technology, it can be used to liquefy natural gas at gas distribution stations. The proposed plant includes, in option 1, drying and cleaning units, a heat exchanger, a compression refrigerator with two evaporators, two refrigerators, an expander, two reducing devices, a circulation compressor and a separator. In options 2 and 4, a second expander is additionally placed, and in options 3 and 4, a second compressor is placed. When operating in winter mode, natural gas is drained and separated into at least one auxiliary gas stream, the main and auxiliary process gas and the production gas, which is cooled, are purified from carbon dioxide, re-cooled, reduced and separated into liquefied natural gas (hereinafter – LNG), and the return gas supplied to the main process gas line, which is cooled in the first evaporator, mixed with the cooled auxiliary process gas, reduced in the expander, mixed with the return gas, and then the resulting low-pressure gas is heated in the heat exchanger and removed. The auxiliary gas is cooled in the second evaporator, reduced, heated in the refrigerator and removed. In the spring-autumn mode, additional energy is supplied to the drive of the refrigerator compressor from the outside. In the summer mode, part of the compressed low-pressure cooled gas is recirculated. The operation of options 2 and 4 differs in that the cooled auxiliary process gas is reduced in the second expander and mixed with the main process gas after the first expander. The operation of options 3 and 4 is characterized by compression and cooling of the production gas before feeding it to the heat exchanger. EFFECT: technical result is an increase in the LNG output, the possibility of gas extraction by several consumers at different pressures, and ensuring the consistency of the LNG output. 4 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 749 700 C2 (51) МПК F25J 1/00 (2006.01) F25J 1/02 (2006. ...

Hydrogen liquefying method with use of helium refrigeration cycle and apparatus for performing the same

FIELD: development of mean- and high-efficiency hydrogen liquefiers. SUBSTANCE: method comprises steps of compressing productive hydrogen flow; preliminarily cooling it at performing adiabatic conversion; realizing intermediate expansion; liquefying hydrogen by means of helium at performing adiabatic conversion; performing expansion of liquid parahydrogen. Helium is compressed in helium refrigeration cycle and after cooling it with use of liquid nitrogen, larger part of compressed flow is expanded in two mounted successively centrifugal expanders and temperature of said flow is lowered. Part of expanded flow is fed for cooling hydrogen; remaining smaller part of compressed flow of helium is cooled and expanded in third centrifugal expander and temperature of helium is reduced. Then it is fed for cooling hydrogen flow for further combining with helium flow used after second centrifugal expander. Then heat exchange with hydrogen flow is realized. Helium flow is divided then by three flows for returning them to helium cycle at three temperature levels. EFFECT: lowered specific consumption of energy, improved thermodynamic effectiveness of hydrogen liquefying cycle in wide range of efficiency control. 2 cl, 2 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 309 342 (13) C1 (51) ÌÏÊ F25J 1/02 F25J 5/00 (2006.01) (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2006115476/06, 05.05.2006 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 05.05.2006 (45) Îïóáëèêîâàíî: 27.10.2007 Áþë. ¹ 30 (73) Ïàòåíòîîáëàäàòåëü(è): Îòêðûòîå àêöèîíåðíîå îáùåñòâî êðèîãåííîãî ìàøèíîñòðîåíè (ÎÀÎ "Êðèîãåíìàø") (RU) Àäðåñ äë ïåðåïèñêè: 143907, Ìîñêîâñêà îáë., ã. Áàëàøèõà-7, ïð-êò Ëåíèíà, 67, ÎÀÎ "Êðèîãåíìàø" (54) ÑÏÎÑÎÁ ÎÆÈÆÅÍÈß ÂÎÄÎÐÎÄÀ Ñ ÃÅËÈÅÂÛÌ ÕÎËÎÄÈËÜÍÛÌ ÖÈÊËÎÌ È 2 3 0 9 3 4 2 R U (57) Ðåôåðàò: Èçîáðåòåíèå ìîæåò áûòü èñïîëüçîâàíî ïðè ñîçäàíèè âîäîðîäíûõ îæèæèòåëåé ñðåäíåé è êðóïíîé ïðîèçâîäèòåëüíîñòè. ...

利用天然气制冷对空气流进行冷压缩的系统

本发明涉及一种利用天然气制冷对空气流进行冷压缩的系统。空气流受到多级压缩，源自含有天然气的制冷剂的制冷被用于级间冷却。通过使用中间冷却介质将制冷从制冷剂传给级间空气流减少了天然气泄漏进入该空气流的可能性。被压缩空气流可供给一种深冷空气分离装置，该空气分离装置包括基于液化天然气的液化器装置，从该液化器装置中提取出用作所述制冷剂的冷天然气流。

Process for producing a methane-rich liquid

工业气体场所与液氢生产的一体化

用于生产液氢的方法(346)可以包括以下步骤：将来自高压天然气管道(300)的加压天然气(302)引入处于有效产生经纯化氢流(315)的条件下的气体处理单元；并且将该经纯化氢流引入处于有效产生液氢流的条件下的氢液化单元(346)，其中，该氢液化单元对该经纯化氢流提供暖温冷却和冷温冷却，其中，该暖温冷却是通过利用选自下组的加压流的泄放能量来提供的，该组由以下组成：源自氮管道的氮流(320)、源自该高压天然气管道(300)的天然气流(2)、源自空气分离单元(ASU)的空气气体(86)、及其组合，其中，通过利用该经纯化氢流的泄放能量来提供该冷温。

Method of liquefying natural gas during development of underwater fields

FIELD: oil and gas industry. SUBSTANCE: invention relates to methods for liquefying natural gas and can be used for underwater development of gas and gas condensate fields. Consistently carry out two independent refrigerant liquefaction cycles of natural gas. First independent cycle is carried out in one step in a flexible underwater pipeline connecting the producing underwater structure with a subsea plant for liquefying natural gas, with use of Arctic seawater as a refrigerant and the process of liquefaction isobaric at a pressure of not less than 4.0 MPa, with the cooling of natural gas to a temperature below plus 10 °C. Gas is then fed to a second independent liquefaction cycle at a subsea plant for liquefying natural gas. It includes four stages with interstage separation and supply of liquefied natural gas in countercurrent with the refrigerant, which is used as air in the liquid phase, having a pressure of at least 4.0 MPa, which is fed to the last fourth stage along the course of natural gas. Gas is cooled in the first stage of this cycle to a temperature of -15…-20 °C, in the second stage – to -35…-45 °C, in the third stage – up to -60…-75 °C, on the fourth stage – to -161.5 °C with a decrease in pressure at this stage to 0.15 MPa with production of liquefied natural gas. EFFECT: technical result consists in simplifying the technological scheme of the method, reducing the refrigerant flow, increasing the output of the target LNG and eliminating the need to remove gaseous nitrogen under the level of ice formations or into the atmosphere, in improving the environmental factor. 1 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 660 213 C1 (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/00 (2006.01) (21)(22) Заявка: 2017125928, 19.07.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 05.07.2018 (45) Опубликовано: 05.07.2018 Бюл. № 19 2 6 6 0 2 1 3 R U (56) ...

Methods and systems for gas treatment in gas storage facilities for gas tankers

본 발명은 특히 선박의 선상의, 가스 저장 시설(2)의 가스 처리 방법 및 시스템에 관한 것이며, 상기 방법은, - 제 1 탱크(4) 또는 제 1 용기(5, 500)로부터 액체 상태의 제 1 가스(4a, 4b, 5a, 5b)의 추출 단계와, - 액체 상태의 제 1 가스의 제 1 과냉각 단계와, - 제 1 탱크(4) 또는 제 1 용기(5, 500) 또는 제 2 탱크 또는 제 2 용기의 바닥부에 액체 상태의 제 1 가스의 냉기 예비 층(4c, 5c, 500c)을 구성하기 위해, 제 1 또는 제 2 탱크(4) 또는 제 1 또는 제 2 용기(5, 500)의 하측 부분에의 액체 상태의 과냉각된 제 1 가스의 저장 단계를 포함한다.

IMPROVED METHOD AND SYSTEM FOR COOLING A HYDROCARBON FLOW USING A REFRIGERANT IN THE GAS PHASE

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2019 112 456 A (51) МПК F25J 1/02 (2006.01) F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2019112456, 24.04.2019 (71) Заявитель(и): ЭР ПРОДАКТС ЭНД КЕМИКАЛЗ, ИНК. (US) Приоритет(ы): (30) Конвенционный приоритет: 27.04.2018 US 15/964,377 Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" Стр.: 1 A 2 0 1 9 1 1 2 4 5 6 R U A (57) Формула изобретения 1. Способ сжижения сырьевого потока природного газа с получением готового СПГ, причем способ включает в себя: (a) пропускание первого сырьевого потока природного газа через и охлаждение первого сырьевого потока природного газа на теплой стороне части из множества секций или всех из множества секций теплообменника, таким образом, чтобы предварительно охлаждать и сжижать первый сырьевой поток природного газа, причем множество секций теплообменника включает в себя первую секцию теплообменника, в которой поток природного газа предварительно охлаждается, и вторую секцию теплообменника, в которой поток предварительно охлажденного природного газа из первой секции теплообменника сжижают с получением первого потока сжиженного природного газа; (b) мгновенное испарение первого потока сжиженного природного газа, отводимого из второй секции теплообменника, с образованием газа мгновенного испарения и готового СПГ, и отделение газа мгновенного испарения от готового СПГ таким образом, чтобы получить поток газа мгновенного испарения и поток готового СПГ; (c) сжатие потока газа мгновенного испарения и рециркуляцию сжатого газа мгновенного испарения обратно в первый сырьевой поток природного газа; (d) циркуляцию метансодержащего хладагента в контуре охлаждения, включающем в себя множество секций теплообменника, компрессорную линию, содержащую множество компрессоров и/или ступеней сжатия и один или большее количество промежуточных охладителей и/или выходных охладителей, ...

低温空气分离过程及设备

一种在使用蒸馏塔系统(10、11)的空气分离装置中用来产生加压气态产品的低温空气分离过程及设备，其包括：在换热管路(30)内冷却一压缩空气流束以形成压缩的冷却空气流束、输送至少一部分压缩的冷却空气流束至系统的一个塔中、液化(60)工业流束(47)以形成第一液体产品、储存至少一部分第一液体产品到储存罐(50)、将储存罐中的至少一部分上述第一液体产品作为供给(60、61)之一输送至空气分离装置、从塔系统的一个塔中提取至少一第二液体产品流束，并压缩该至少一第二液体产品流束(6)、在换热管路里汽化上述压缩的第二液体产品流束以形成加压气态产品，并提取冷气体(40)(在换热管路里完全没有被加热)。

Apparatus for storing multicomponent frozen liquids

본 발명은 저장탱크로부터 배출되는 액체와의 간접적인 열교환을 통하여 저장탱크내의 상부공간 수증기가 외부 응축탱크내에서 응축되는 다중성분 냉동액체를 저장하기 위한 장치에 관한 것이다. 생성된 응축물은 외부 응축탱크에 적용되는 압력 증가 회로를 통하여 저장탱크내로 재유입될 수 있다. 이러한 방법으로 저장탱크내의 압력은 조절되고 저장탱크내에 저장된 액체 조성물은 어느정도의 농도를 유지한다. 외부 응축탱크를 사용함으로써 다중성분 냉동액체를 저장하도록 선행 기술의 냉동 저장탱크 및 보온용기를 개조할 수 있다.

Liquid natural gas liquefier utilizing mechanical and liquid nitrogen refrigeration

The present invention relates to a method and system for producing liquefied natural gas (LNG) from a stream of pressurized natural gas (1) which involves a combination of mechanical refrigeration produced by the reverse Brayton cycle (53,58) as well as refrigeration from evaporation of liquid nitrogen (31).

Process for producing methane-rich liquid

公开了一种从加压的富甲烷气体流生产温度在-112℃(-170°F)上、压力足以使该液体保持在或低于其沸点的加压的富甲烷液体流的方法。在该方法中，供给温度低于-155℃(-247°F)的富甲烷液体流并增加它的压力，供给一种待液化的加压的富甲烷气体(12)，并以一定的速度引入加压的富甲烷液体流(10)，从而生产出温度在-112℃(-170°F)、压力足以使该液体保持在或低于其沸点上的富甲烷液体流。

Natural gas liquefaction plant that uses mechanical cooling and liquid nitrogen cooling

FIELD: liquefaction systems. SUBSTANCE: invention relates to the production of liquefied natural gas. The natural gas liquefaction system comprises a natural gas inlet, a liquid nitrogen inlet, a refrigerant inlet, a gaseous refrigerant outlet located at a lower pressure than the refrigerant inlet, a liquefaction unit communicating through a fluid medium to receive natural gas, liquid nitrogen, and incoming and outgoing refrigerant flows, which also includes at least one turbine, which receives the incoming refrigerant flow and releases the refrigerant flow at a reduced temperature and at a reduced pressure. The incoming flow to at least one turbine can be pre-cooled inside the liquefaction plant to a temperature lower than the ambient temperature. The liquefaction unit accepts a low temperature and pressure refrigerant fluid, which is further heated in the treatment area and discharged from the liquefaction unit as outgoing gaseous refrigerant flow; and has a liquefied natural gas outlet connected to the liquefaction unit. EFFECT: reduced capital and operating costs. 9 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 749 931 C2 (51) МПК F25J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/0012 (2020.08); F25J 1/0022 (2020.08); F25J 1/005 (2020.08); F25J 1/004 (2020.08); F25J 1/0072 (2020.08); F25J 1/0204 (2020.08); F25J 1/0205 (2020.08); F25J 1/0221 (2020.08); F25J 1/0258 (2020.08); F25J 1/0263 (2020.08); F25J 1/0265 (2020.08); F25J 1/0267 (2020.08); F25J 1/0274 (2020.08); F25J 1/0281 (2020.08); F25J 5/002 (2020.08) (24) Дата начала отсчета срока действия патента: 26.02.2018 Дата регистрации: 21.06.2021 Приоритет(ы): (30) Конвенционный приоритет: 23.02.2018 US 15/903,172; 24.02.2017 US 62/463,269 (43) Дата публикации заявки: 03.03.2021 Бюл. № 7 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 03.09.2019 (73) Патентообладатель(и): ПРАКСАЙР ТЕКНОЛОДЖИ, ИНК. (US) (56) Список ...

Improved method and system for cooling a hydrocarbon stream using a gas phase refrigerant

메탄 및 메탄과 질소의 혼합물을 포함하는 냉매를 사용하여 천연 가스 스트림의 액화를 위한 방법 및 시스템이 본원에 기재되어 있다. 이 방법 및 시스템은 천연 가스를 액화 및/또는 예냉시키기 위한 냉동을 제공하는데 사용되는 적어도 주로 가스인 냉매의 하나 이상의 스트림들을 제공하기 위해 가스 냉매의 하나 이상의 스트림을 팽창시키기 위한 하나 이상의 터보-익스팬더를 채용하는 냉동 회로 및 사이클, 그리고 서브-냉각을 위한 냉동을 제공하는 냉매의 기화 스트림을 제공하기 위해 2상 냉매 또는 액체의 스트림을 저압까지 팽창시키기 위한 J-T 밸브를 사용한다. Methods and systems for the liquefaction of natural gas streams using a refrigerant comprising methane and a mixture of methane and nitrogen are described herein. The method and system comprises one or more turbo-expanders for expanding one or more streams of gaseous refrigerant to provide one or more streams of at least primarily gaseous refrigerant used to provide refrigeration for liquefying and/or precooling natural gas. The refrigeration circuit and cycle employed, and a JT valve to expand the stream of two-phase refrigerant or liquid to low pressure to provide a vaporized stream of refrigerant providing refrigeration for sub-cooling are used.

Fuel gas supply and re-liquefaction system of lng/lpg combined carrier

본 발명은 LNG/LPG 겸용선의 재액화 시스템 및 연료 공급 방법에 관한 것으로, LNG 저장탱크 내의 증발가스를 외부로 순환시키는 LNG증발가스 순환라인; 상기 LNG증발가스 순환라인에 설치되어 LNG증발가스와 LNG액체연료를 상호 분리하는 LNG기액분리기; 상기 LNG기액분리기 후방측 LNG증발가스 순환라인에 설치되는 LNG증발가스 압축기; 상기 LNG증발가스 순환라인으로부터 분기되어 상기 LNG증발가스 압축기로부터 토출되는 일부의 증발가스를 엔진으로 공급하는 엔진연료 공급라인; 상기 LNG증발가스 순환라인에 설치되는 LNG증발가스 재액화기; LPG 저장탱크 내의 증발가스를 외부로 순환시키는 LPG증발가스 순환라인; 상기 LPG증발가스 순환라인에 설치되는 LPG증발가스 압축기; 및 상기 LPG증발가스 순환라인에 설치되는 LPG증발가스 재액화기;를 포함하되, 상기 LNG 저장탱크 내의 액체연료를 외부로 빼내어 상기 LPG증발가스 재액화기, LNG기액분리기를 순차적으로 통과 후 다시 LNG 저장탱크로 복귀시키는 LNG액체연료 공급수단을 포함하여 구성된 것을 특징으로 한다. 이에 따라, LPG증발가스를 보다 효율적으로 냉각시킬 수 있을 뿐만 아니라, LNG 저장탱크 내에 저장된 연료를 먼저 하역작업 하더라도 LPG증발가스의 재액화작업을 안정적으로 수행할 수 있는 효과가 있다. The present invention relates to a reliquefaction system and fuel supply method of the LNG / LPG combined vessel, LNG evaporation gas circulation line for circulating the boil-off gas in the LNG storage tank to the outside; An LNG gas-liquid separator installed in the LNG evaporation gas circulation line to separate the LNG evaporation gas from the LNG liquid fuel; LNG evaporation gas compressor installed in the LNG evaporation gas circulation line on the rear side of the LNG gas liquid separator; An engine fuel supply line branching from the LNG evaporation gas circulation line and supplying a part of boil-off gas discharged from the LNG evaporation gas compressor to an engine; LNG evaporator gas reliquefaction unit is installed in the LNG evaporation gas circulation line; LPG evaporation gas circulation line for circulating the boil-off gas in the LPG storage tank to the outside; LPG evaporation gas compressor installed in the LPG evaporation gas circulation line; And an LPG evaporator gas reliquefaction device installed in the LPG evaporation gas circulation line; including, but taking out the liquid fuel in the LNG storage tank to the outside, the LPG evaporator gas re-liquefier, the LNG gas-liquid separator after passing sequentially through the LNG storage tank It characterized in that it comprises a LNG ...

Manufacture of dry ice and liquefied nitrogen and device thereof, and re-liquefying method of boil-off gas and device thereof

(57)【要約】 【課題】 ＬＮＧの冷熱を有効に利用すること及び発生 量が変動するＢＯＧを効率よく液化することができる方 法及びそのための装置を提供すること。 【解決手段】 払い出し液化天然ガスの冷熱を利用して 燃焼排ガスを冷却し、該燃焼排ガスに含有される炭酸ガ スを固化することによりドライアイスを生成して分離 し、ドライアイスを分離した残排ガスを更に圧縮、冷却 して液化窒素を製造することを特徴とするドライアイス 及び液化窒素の製造方法並びに得られた液化窒素を用い てボイルオフガスを液化することを特徴とするボイルオ フガスの再液化方法並びにこれらの方法で使用される装 置。

Integration of hydrogen liquefaction and gas processing units

披露了一种方法，该方法包括：压缩第一氢流，并使一部分膨胀以产生氢制冷流，冷却第二氢流，从而产生凉氢流，其中制冷的至少一部分由氮制冷流提供，进一步冷却该凉氢流的至少一部分，从而产生冷氢流和暖氢制冷流，其中制冷的至少一部分由该氢制冷流提供，压缩该暖氢制冷流，将压缩的第一氢流的其余部分与高压气态氮流混合以形成氨合成气流，并且其中该第一氢流和该暖氢制冷流在同一压缩机中被压缩。

Power generation and LNG production

The present techniques are directed to a system and method for generating power and producing liquefied natural gas (LNG). The system includes a power plant configured to generate power, wherein an exhaust gas from the power plant provides a gas mixture including nitrogen and carbon dioxide. The system also includes a dehydration system configured to dehydrate the gas mixture to generate a nitrogen refrigerant stream and a refrigeration system configured to produce LNG from a natural gas stream using the nitrogen refrigerant stream.

Gas supply systems for gas engines

극저온 열교환기, 증발가스 예열기를 구비하는 증발가스 압축기 및 압신기(compander)를 구비하는 질소 회로를 포함하고, 증발가스 재액화 설비에 통합되며, 상기 증발가스는 화물 탱크로부터 나오는 액화 천연 가스 또는 재액화 설비로부터 나온 응축물의 액화 천연 가스 형태인, 이중연료 엔진 또는 가스 엔진용 가스 공급 시스템이 개시되어 있다. 상기 가스 공급 시스템에는, 엔진에 의해 연소될 가스로부터 나오는 냉각 듀티를 재액화 설비에서 활용하기 위해, 가스 공급 시스템에는 냉각 듀티를 추출하는 증발기(옵티마이저) 및/또는 냉각 듀티 추출을 최적화하는 데에 사용되는 중간 매체를 가열하는 열원과 하나 이상의 펌프를 포함하는 폐회로 내에 배치되어 있는 증발기가 마련되어 있다. A cryogenic heat exchanger, an evaporative gas compressor with an evaporative gas preheater and a nitrogen circuit with a compander, which are integrated into an evaporative gas reliquefaction plant, which is a liquefied natural gas or ash from a cargo tank. A gas supply system for a dual fuel engine or gas engine, in the form of liquefied natural gas of condensate from a liquefaction plant, is disclosed. In the gas supply system, in order to utilize the cooling duty from the gas to be burned by the engine in the reliquefaction facility, the gas supply system may be used to optimize the evaporator (optimizer) and / or cooling duty extraction that extracts the cooling duty. An evaporator is provided which is arranged in a closed circuit comprising a heat source for heating the intermediate medium used and one or more pumps.

Method of production of methane-rich liquid

FIELD: production of compressed liquid natural gas at temperature above minus 112 C and pressure at point of beginning of boiling. SUBSTANCE: proposed method includes delivery of methane-rich liquid flow at temperature of minus 155 C and compression to definite pressure. Then methane-rich gas flow is expanded reducing its pressure to preset level and gas flow is joined with liquid flow for liquefaction of gas. EFFECT: enhanced efficiency. 13 cl, 3 dwg, 1 tbl сбрУссс ПЧ сэ (19) РОССИЙСКОЕ — АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ 12 ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ ВЦ 2 224 192 (51) МПК? Е 25 4 1/00 (13) С2 (21), (22) Заявка: 2001122814/06 , 17.12.1999 (24) Дата начала действия патента: 17.12.1999 (30) Приоритет: 15.01.1999 1$ — 60/115,980 (43) Дата публикации заявки: 10.05.2003 (46) Дата публикации: 20.02.2004 (56) Ссылки: ММО 98159206 АЛ, 30.12.1998. КО 2044973 С1, 21.09.1995. КУ 2093765 С1, 20.10.1997. Ч$ 4010622 А, 08.03.1977. М/О 99/01706 АЛ, 14.01.1999. (85) Дата перевода заявки РСТ на национальную фазу: 15.08.2001 (86) Заявка РСТ: 4$ 99/30256 (17.12.1999) (87) Публикация РСТ: УМО 00/42348 (20.07.2000) (98) Адрес для переписки: 129010, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. Г.Б. Егоровой (72) Изобретатель: СТОУН Джон Б. (4$) (73) Патентообладатель: ЭКСОНМОБИЛ АПСТРИМ РИСЕРЧ КОМПАНИ (Ц5$) (74) Патентный поверенный: Егорова Галина Борисовна (54) СПОСОБ ПРОИЗВОДСТВА БОГАТОЙ МЕТАНОМ ЖИДКОСТИ (57) Способ обеспечивает производство сжатого жидкого природного газа, имеющего температуру выше -112°С и давление по существу в точке начала кипения. Подают поток богатой метаном ЖИДКОСТИ с температурой ниже -155°С и сжимают до заранее определенного давления. Расширяют поток богатого метаном газа, понижая его давление до заранее определенного. Соединяют поток газа с ПОТОКОМ Жидкости, чтобы произвести ожижение потока газа. Использование изобретен ия позволит усовершенствовать способ получения сжатого ...

Gas liquidation system

FIELD: refrigeration and cryogenic technology. SUBSTANCE: gas liquefaction system refers to refrigeration and cryogenic technology and is designed to liquefy evaporated components, for example, fuels in land-based power plants and vehicles. The heat exchanger is made in the form of a cryogenic vessel with a collector located in its lower part of the liquid volume; a liquefied gas supply pipeline with a shut-off valve and a pressure regulator is connected to the collector. Pipelines are connected with the lower part of the cryogenic vessel through valves for supplying liquid refrigerant and removing liquefied gas. The gas cavity of the cryogenic vessel is connected to a refrigerant vapor outlet pipe in which a drain valve is installed. The collector contains capillary channels for the release of the liquefied gas in the form of bubbles into the liquid refrigerant, while the capillary channels are located on the collector in such a way that the trajectories of the bubbles emerging from different capillary channels upward through the layers of the liquid coolant do not coincide. EFFECT: increasing the efficiency of the gas liquefaction process and improving the economy due to the fact that the bubbles coming out of different capillary channels do not mix, completely condense and do not reach the gas cavity of the cryogenic vessel. 5 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 746 143 C1 (51) МПК F25J 1/02 (2006.01) F28C 3/08 (2006.01) F17C 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F25J 1/0221 (2021.02); F28C 3/08 (2021.02); F17C 3/00 (2021.02) (21)(22) Заявка: 2020127998, 20.08.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Шишков Владимир Александрович (RU) Дата регистрации: 07.04.2021 Приоритет(ы): (22) Дата подачи заявки: 20.08.2020 (45) Опубликовано: 07.04.2021 Бюл. № 10 2 7 4 6 1 4 3 R U (54) СИСТЕМА СЖИЖЕНИЯ ГАЗА (57) Реферат: Система сжижения газа ...

Hydrogen-floating production and treatment system

부유식 수소 생산 및 관리시스템이 개시된다. 본 실시 예에 의한 부유식 수소 생산 및 관리시스템은 액화천연가스 및 이로부터 발생하는 증발가스를 수용하는 저장탱크, 저장탱크로부터 기화된 천연가스 및 증발가스 중 적어도 어느 하나를 공급받아 수소가스를 생산하는 개질기, 개질기에 의해 생산된 수소가스를 액화시키는 수소 액화라인 및 개질기에서 발생되는 이산화탄소를 액화시켜 CO2 수요처로 공급하는 CO2 공급라인을 포함하고, CO2 공급라인은 유입된 이산화탄소를 가압하는 컴프레서와, 컴프레서에 의해 가압된 이산화탄소를 냉각시켜 액화하는 냉각장치를 포함하고, 냉각장치는 저장탱크의 액화천연가스를 재기화하여 제1 수요처로 공급하는 재기화장치로 유입된 액화천연가스로부터 냉열을 공급받는 열교환장치로 마련될 수 있다.

Liquefaction of industrial gas and hydrocarbon gas

Method and system for treating gas in a gas storage facility of a gas tanker

本发明一种气体存储设施(2)、特别是船上的气体存储设施的气体处理方法，所述方法包括以下步骤：从第一罐(4)或第一容器(5；500)中提取液态的第一气体(4a，4b，5a，5b)，对液态的第一气体进行第一过冷，和在所述第一罐(4)的或所述第一容器(5；500)的或第二罐的或第二容器的下部部分中储存液态的过冷的第一气体，以便在第一罐或第二罐(4)、或第一容器或第二容器(5；500)的底部处构成液态的第一气体的冷储备层(4c，5c，500c)。

Industrial and hydrocarbon gas liquefaction

산업용 가스 또는 가스 혼합물(탄화수소 및/또는 비 탄화수소)의 액화 방법은 액화 공정 중에 상기 가스 또는 가스 혼합물을 냉각시키는 데 사용되는 변형된 수화 암모니아 흡수식 냉동 시스템(ARP)을 사용한다. 상기 가스는 그 임계점 이상으로 압축될 수 있고, 압축열 에너지는 ARP를 작동하는데 필요한 열 에너지의 일부 또는 전부를 제공하기 위하여 회수될 수 있다. 상기 방법은 Joule Thomson (JT) 단열 팽창 과정을 사용하여 특수 극저온 회전 장비가 필요하지 않는다. 수화 암모니아 흡수식 냉동 시스템은 증기 흡수 탑(VAT, vapour absorber tower)을 포함하며, 이는 무수 암모니아 증기가 과냉각된 린(lean) 수화 암모니아 용액에 흡수될 때 시스템 내의 용액의 열 및 응축 에너지 열의 일부 또는 전부를 회수할 수 있다. VAT를 포함하는 변형된 ARP는 암모니아 가스 냉각기 작동 온도가 -71℃로 낮아지도록 10kPa까지 낮은 작동 압력을 달성할 수 있다. The liquefaction process for industrial gases or gas mixtures (hydrocarbons and/or non-hydrocarbons) uses a modified hydrated ammonia absorption refrigeration system (ARP) which is used to cool the gas or gas mixture during the liquefaction process. The gas may be compressed above its critical point, and the thermal energy of compression may be recovered to provide some or all of the thermal energy required to operate the ARP. The method uses a Joule Thomson (JT) adiabatic expansion process and does not require special cryogenic rotating equipment. Hydrated ammonia absorption refrigeration systems include a vapor absorber tower (VAT), which is part or all of the heat and condensation energy heat of the solution in the system when the anhydrous ammonia vapor is absorbed into the supercooled lean hydrated ammonia solution. can be recovered A modified ARP with VAT can achieve operating pressures as low as 10 kPa to bring the ammonia gas cooler operating temperature down to -71°C.

Utilize boats and ships CO2 liquefaction collecting system of LNG cold energy

本申请公开一种利用LNG冷能的船舶CO 2 液化收集系统，包括液化处理单元、收集及卸放单元和放散单元。液化处理单元包括依次设置的缓冲收集罐、压缩机、冷却器、降温换热器、液化用CO 2 管路、气液分离器和液体CO 2 输送泵。液化用CO 2 管路包括液化前管路和液化后管路,用于在LNG供气系统设备中的CO 2 液化换热器内换热。气液分离器的液体出口连接液体CO 2 输送泵，而气液分离器的气体出口连接有节流阀,然后连接放散单元进行放散。收集及卸放单元包括相连接的液态CO 2 储罐和卸放站。液态CO 2 储罐通过安全阀或通过气相CO 2 卸放管路连接放散单元。本申请能够有效利用LNG燃料的冷能，液化和收集船舶排放的CO 2 ，提升船舶使用LNG燃料的碳减排能力。

Hydrogen liquefaction system with ortho-para hydrogen conversion

本发明公开了一种带正–仲氢转化的氢液化系统，由七个串联设置的氢液化冷箱构成，每个氢液化冷箱的结构包括：由内壳体和外壳体构成的壳体，在壳体中设置有用于输送氢液化制冷剂的呈螺旋状盘旋的换热管、用于输送氢气/液氢的第一输氢管道和第二输氢管道、以及用于将正仲氢转化催化剂填满或泄出于内壳体中的催化剂进料管和催化剂出料管，在第一输氢管道和第二输氢管道中分别设置有管道过滤嘴；排列于第一个的氢液化冷箱中的氢液化制冷剂为液化丙烷，排列于第二个至第七个的氢液化冷箱中的氢液化制冷剂均为液氮。该系统能在氢液化的同时完成氢气/液氢正‑仲态的转化、并确保氢液化的同时仲氢占比超过95%。

Improved method and system for cooling hydrocarbon flow using gas-phase coolant

FIELD: cooling. SUBSTANCE: invention relates to liquefaction of a natural gas stream using a coolant containing methane or a mixture of methane and nitrogen. In methods and systems one uses a contour and a cooling cycle, in which one or more turbine expander is used to expand one or more flows of gaseous cooling agent, in order to obtain one or more gaseous coolant streams which are used to provide cooling capacity for liquefaction and/or pre-cooling of natural gas, and a Joule-Thomson valve for expanding the flow of the liquid or two-phase coolant to a lower pressure to form an evaporating coolant flow which provides cooling capacity for overcooling. EFFECT: technical result is higher refrigerating capacity of coolant circuit. 25 cl, 2 tbl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 727 500 C1 (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 1/0221 (2020.02); F25J 1/0052 (2020.02) (21)(22) Заявка: 2019112455, 24.04.2019 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): ЭР ПРОДАКТС ЭНД КЕМИКАЛЗ, ИНК. (US) Дата регистрации: 21.07.2020 (56) Список документов, цитированных в отчете о поиске: CN 105823304 A, 03.08.2016. US 2013/ 174603 A1, 11.07.2013. SU 1355138 A3, 23.11.1987. US 6250244 B1, 26.06.2001. US 2016/313057 A1, 27.10.2016. 27.04.2018 US 15/964,302 (45) Опубликовано: 21.07.2020 Бюл. № 21 2 7 2 7 5 0 0 R U (54) УЛУЧШЕННЫЙ СПОСОБ И СИСТЕМА ОХЛАЖДЕНИЯ УГЛЕВОДОРОДНОГО ПОТОКА С ПРИМЕНЕНИЕМ ХЛАДАГЕНТА В ГАЗОВОЙ ФАЗЕ (57) Реферат: Изобретение относится к сжижению потока холодопроизводительность для сжижения и/или природного газа с применением хладагента, предварительного охлаждения природного газа, содержащего метан или смесь метана и азота. В и клапан Джоуля-Томсона для расширения способах и системах применяют контур и цикл потока жидкого или двухфазного хладагента до охлаждения, в которых используется один или более низкого ...

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.

System and method of production of liquefied natural gas

본 발명은 개방 사이클 또는 폐쇄 사이클 내 냉각제(refrigerant)로써 공기를 사용하는 단계를 포함하는 액화 천연가스의 제조 방법에 관한 것이다. 또한, 상기 본 발명은 상기 처리 공정을 수행하기 위한 시스템에 관한 것이다. The present invention relates to a process for the production of liquefied natural gas comprising the step of using air as a refrigerant in an open cycle or closed cycle. The present invention also relates to a system for performing the process.

Combination system for production of nitrogen and liquefaction of natural gas on the basis of plant with cryogenic stirling machine

FIELD: production of nitrogen and liquefaction of natural gas. SUBSTANCE: cryogenic Stirling machine, fractionating tower and heat exchanger for freezing out of moisture and carbon dioxide in the combination system are used as a plant for production of liquid nitrogen. The nitrogen gasification line consists of pipe-lines with liquid and gaseous nitrogen connecting in succession a heat-insulated vessel for liquid nitrogen, high-pressure pump, heat exchanger for liquefaction of natural gas and a gas-filling station. The gas-filling station has a receiver vessel, filling line with pressure-reducing and filling valves, and vessels for gaseous high-pressure nitrogen. The pipe-line for feeding of free air to the plant for nitrogen liquefaction passes through the heat-exchanger used for heating of gaseous nitrogen. The vessel for storage of liquefied natural gas communicates with the liquefaction heat exchanger through a liquefied gas drain line made in the form of a coil-pipe in the vessel gas-containing section. EFFECT: enhanced efficiency of systems and reduced material costs at production of nitrogen and liquefied natural gas. 1 dwg дб стс ПЧ Го (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 21541 977‘ (51) МПК? 13) С1 Е 25 4 1/02, 3/04 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 99107205/06, 13.04.1999 (24) Дата начала действия патента: 13.04.1999 (46) Дата публикации: 27.06.2000 (56) Ссылки: СВ 1135871 А, 04.12.68. ЗЦ 690255 А, 05.10.79. ЗЧ 246536 А 20.06.69. СВ 2172388 А, 17.09.86. ЦЗ 3878689 А, 22.04.75. ЦЗ 5327729 А, 12.07.94. ЕВ 2471567 А, 16.06.81. Вопросы глубокого охлаждения: Сборник статей. Под ред. М.П.Малкова. -М.: Иностранная литература, 1961, с.44. (98) Адрес для переписки: 197082, Санкт-Петербург, П-82, ул. Красного Курсанта 16, Военный инженерно-космический университет им. А.Ф. Можайского, НИО, НИЛ-6, Кириллову Н.Г. (71) Заявитель: Военный инженерно-космический университет им. АФ. Можайского (72) Изобретатель ...

Hydrogen-floating production and treatment system

부유식 수소 생산 및 관리시스템이 개시된다. 본 실시 예에 의한 부유식 수소 생산 및 관리시스템은 액화천연가스 및 이로부터 발생하는 증발가스를 수용하는 저장탱크, 저장탱크로부터 기화된 천연가스 및 증발가스 중 적어도 어느 하나를 공급받아 수소가스를 생산하는 개질기, 개질기에 의해 생산된 수소가스를 액화시키는 수소 액화라인, 개질기로 제공되는 스팀을 발생시키는 스팀 보일러, 개질기에서 발생하는 폐열을 수집하는 폐열회수라인 및 스팀 보일러로 물을 공급하되, 물을 폐열회수라인을 따라 이송되는 가열된 열매체와 열교환하여 예열시킨 후 스팀 보일러로 공급하는 H2O 공급라인을 포함하여 제공될 수 있다.

Method for underwater development of gas deposits, method for underwater natural gas liquefaction and underwater system therefor

FIELD: gas industry. SUBSTANCE: group of inventions relates to underwater structures and is intended for underwater development of gas deposits and liquefaction of natural gas in water areas of Arctic Ocean, which for a long time or permanently are covered with ice fields that are hard to navigate for Arctic ice breakers prevent production and transport of borehole fluid by conventional method. Underwater system for underwater development of gas deposits and natural gas liquefaction is designed for year-round operation at depth within range of 100-120 m from sea level. Said system comprises drilling-extraction underwater structure, underwater accommodations with control center, underwater nuclear power plant, underwater plant to liquefy natural gas, underwater tank for receiving/storage of liquid nitrogen, underwater tank for receiving/storage/shipment of liquefied natural gas and underwater liquefied gas tanker. Drilling-extraction underwater structure has capacity for year-round underwater well drilling and operation with well fluid purification from mechanical impurities. Drilling-extraction underwater structure is connected to plant for natural gas liquefaction by binding flexible tube with length, providing cooling of natural gas in Arctic environment of sea to a specified value. Underwater plant to liquefy natural gas is configured for its liquefaction by cascade stepped successive cooling to condensation temperature in counterflow with liquid nitrogen and providing output of spent liquid nitrogen in exhaust flexible pipe into atmosphere and/or under ice. Underwater nuclear power plant is configured to provide electric energy via flexible floating cables to all underwater structures. EFFECT: higher safety and quality of work in underwater development of gas deposits and underwater liquefaction of natural gas. 7 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 604 887 C1 (51) МПК E21B 43/017 (2006.01) E02D 29/09 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ...

METHOD FOR LIQUID HYDROGEN

Способ сжижения водорода, включающий следующие стадии: ! a) предварительное охлаждение потока водорода посредством непрямого теплообмена с потоком ЖПГ, находящегося под давлением, до температуры между 140 и 130 К, ! b) предварительное охлаждение потока водорода посредством непрямого теплообмена с хладагентом до температуры между 85 и 75 К, ! c) где предварительное охлаждение хладагента осуществляют с потоком ЖПГ, находящегося под давлением, и ! d) охлаждение и сжижение, по меньшей мере, части предварительно охлажденного потока водорода посредством непрямого теплообмена со следующим потоком водорода, который ведут в замкнутом холодильном цикле, ! e) причем предварительное охлаждение конденсированного, проводимого в замкнутом цикле потока водорода осуществляют с потоком ЖПГ, находящегося под давлением. ! 2. Способ по п.1, отличающийся тем, что в качестве хладагента для предварительного охлаждение потока водорода используют азот. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 100 154 (13) A (51) МПК F25J 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2009100154/06, 01.06.2007 (71) Заявитель(и): ЛИНДЕ АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) (30) Конвенционный приоритет: 12.06.2006 DE 102006027199.8 (43) Дата публикации заявки: 20.07.2010 Бюл. № 20 (72) Автор(ы): КЮНДИГ Андреас (CH) (87) Публикация PCT: WO 2007/144078 (21.12.2007) R U (54) СПОСОБ СЖИЖЕНИЯ ВОДОРОДА (57) Формула изобретения Способ сжижения водорода, включающий следующие стадии: a) предварительное охлаждение потока водорода посредством непрямого теплообмена с потоком ЖПГ, находящегося под давлением, до температуры между 140 и 130 К, b) предварительное охлаждение потока водорода посредством непрямого теплообмена с хладагентом до температуры между 85 и 75 К, c) где предварительное охлаждение хладагента осуществляют с потоком ЖПГ, находящегося под давлением, и d) охлаждение и сжижение, по меньшей мере, части предварительно охлажденного ...

Cryogenic air separation process for producing pressurized gaseous product in air separation device

一种在使用蒸馏塔系统(10、11)的空气分离装置中用来产生加压气态产品的低温空气分离过程及设备，其包括：在换热管路(30)内冷却一压缩空气流束以形成压缩的冷却空气流束、输送至少一部分压缩的冷却空气流束至系统的一个塔中、液化(60)工业流束(47)以形成第一液体产品、储存至少一部分第一液体产品到储存罐(50)、将储存罐中的至少一部分上述第一液体产品作为供给(60、61)之一输送至空气分离装置、从塔系统的一个塔中提取至少一第二液体产品流束，并压缩该至少一第二液体产品流束(6)、在换热管路里汽化上述压缩的第二液体产品流束以形成加压气态产品，并提取冷气体(40)(在换热管路里完全没有被加热)。

Liquefying device for achieving liquid argon cold energy recovery

一种实现液氩冷量回收的液化装置，它主要包括循环氮气透平压缩机组、增压透平膨胀机组、液化冷箱及仪电控系统，所述的液化冷箱由板翅式换热器、管道、阀门、钢结构冷箱等组成，所述循环氮气透平压缩机组的压力氮气出口连接于增压透平膨胀机组的增压端使继续增压后的压力氮气进入相连的液化冷箱内板翅式换热器中，与返流的低压循环氮气和液氩换热，所述板翅式换热器的中间复热氮气抽出口连接于增压透平膨胀机组的膨胀端，使复热氮气膨胀制冷并降温后作为返流的低压循环氮气进入连接的板翅式换热器返流氮气流道，板翅式换热器的返流氮气流道出口再次连通循环氮气透平压缩机组或连接氮气管网；所述板翅式换热器中的液氩换热流道管接液氩，且所述液氩在经过板翅式换热器换热后变为常温气氩作为产品送出。

Patent RU2020125193A3

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2020 125 193 A (51) МПК F17C 13/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2020125193, 23.01.2019 (71) Заявитель(и): ГАЗТРАНСПОРТ ЭТ ТЕХНИГАЗ (FR) Приоритет(ы): (30) Конвенционный приоритет: 23.01.2018 FR 1850519; 09.02.2018 FR 1851136 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.07.2020 EP 2019/051590 (23.01.2019) (87) Публикация заявки PCT: WO 2019/145342 (01.08.2019) A Адрес для переписки: 129110, Москва, а/я 165, Зуйков Сергей Анатольевич R U (57) Формула изобретения 1. Способ обработки газа установки (2) для хранения газа, в частности, на борту судна, включающий этапы, на которых: - извлекают первый газ (4a, 4b, 5a, 5b) в жидком состоянии из первого резервуара (4) или первой емкости (5, 500), - осуществляют первое переохлаждение первого газа в жидком состоянии, и - хранят переохлажденный первый газ в жидком состоянии в нижней части первого резервуара (4) или первой емкости (5, 500) или второго резервуара или второй емкости для образования холодного резервного слоя (4c, 5c, 500c) первого газа в жидком состоянии на дне первого или второго резервуара (4) или первой или второй емкости (5, 500). 2. Способ по предыдущему пункту, в котором первый газ подают в первый или второй резервуар (4) или первую или вторую емкость (5, 500) по трубопроводу (16, 56, 156), который выходит на дне (19, 190) первого или второго резервуара (4) или первой или второй емкости (5, 500). 3. Способ по любому из предыдущих пунктов, в котором первый газ, хранящийся в холодном резервном слое (4c, 5c, 500c) первого или второго резервуара (4) или первой или второй емкости (5, 500), используют для охлаждения газа в парообразном состоянии. 4. Способ по предыдущему пункту, в которомгаз в парообразном состоянии Стр.: 1 A 2 0 2 0 1 2 5 1 9 3 (54) СПОСОБ И СИСТЕМА ОБРАБОТКИ ГАЗА В УСТАНОВКЕ ДЛЯ ХРАНЕНИЯ ГАЗА ТАНКЕРА ДЛЯ ПЕРЕВОЗКИ ГАЗА 2 0 2 0 1 2 5 1 9 3 (86) Заявка PCT: R U ( ...

Liquid hydrogen production method and liquid hydrogen production equipment

Industrial and hydrocarbon gas liquefaction

A method for liquefaction of industrial gases or gas mixtures (hydrocarbon and/or non-hydrocarbon) uses a modified aqua-ammonia absorption refrigeration system (ARP) that is used to chill the gas or gas mixture during the liquefaction process. The gas may be compressed to above its critical point, and the heat of compression energy may be recovered to provide some or all of the thermal energy required to drive the ARP. The method utilizes a Joule Thomson (JT) adiabatic expansion process which results in no requirement for specialty cryogenic rotating equipment. The aqua-ammonia absorption refrigeration system includes a vapour absorber tower (VAT) which permits the recovery of some or all of the heat of solution and heat of condensation energy in the system when anhydrous ammonia vapour is absorbed into a subcooled lean aqua-ammonia solution. The modified ARP with VAT may achieve operating pressures as low as 10 kPa which results in ammonia gas chiller operating temperatures as low as -71 C.

Method and apparatus for producing liquefied natural gas

Systems and methods for producing liquid natural gas from heat exchange with liquid nitrogen or air is provided. The produced liquid natural gas may be used as vehicle fuel. After heat exchange, the vaporized liquid nitrogen or air may be routed in the system to regenerate a heat exchange unit and/or a natural gas pretreatment unit. After assisting with the regeneration, the vaporized nitrogen or air may be safely vented to atmosphere. In one embodiment, a system for liquefying natural gas using a refrigerant includes a first treating unit configured to remove a contaminant from the natural gas; a first exchanger unit for liquefying the natural gas using the refrigerant; a second exchanger unit configured to receive the refrigerant from the first exchanger unit, wherein the first exchanger unit and the second exchanger unit operate on alternating cycles; a second treating unit configured to receive the refrigerant from the second exchanger unit; and a storage unit for the receiving the liquid natural gas.

INSTALLATION AND METHOD FOR PROVIDING LIQUID XENON

Cette installation (1) comprend un réservoir (4) adapté pour contenir une masse dite utile de xénon, un dispositif cryogénique (10) adapté pour condenser du xénon gazeux (GXe) et relié au réservoir (4), ainsi qu'un équipement d'isolation thermique agencé pour isoler thermiquement le réservoir (4). This installation (1) comprises a tank (4) adapted to contain a so-called useful mass of xenon, a cryogenic device (10) suitable for condensing xenon gas (GXe) and connected to the tank (4), as well as equipment for thermal insulation arranged to thermally isolate the tank (4).

Method for production of liquefied air and separation of air, involves cooling and liquefying air flow by indirect heat transfer with liquid nitrogen flow that is vaporized by indirect heat transfer to form nitrogen gas

Dans un procédé de production d'air liquéfié comme produit final, de l'air gazeux est épuré pour enlever du dioxyde de carbone et de l'eau par adsorption dans une unité d'adsorption (7) puis refroidi et liquéfié par échange de chaleur indirect avec un débit d'azote liquide (29), l'azote liquide provenant d'un stockage (27) autre qu'une colonne de distillation et étant vaporisé par l'échange de chaleur indirect pour former de l'azote gazeux (33).

Installation and process for producing hydrogen at cryogenic temperature

Installation et procédé de production d’hydrogène à température cryogénique, comprenant un électrolyseur (2), un circuit (3) d’hydrogène à refroidir comprenant une extrémité amont reliée à la sortie d’hydrogène et une extrémité aval (22) destinée à être reliée à un organe (23) de collecte de l’hydrogène refroidi et/ou liquéfié, l’installation (1) comprenant un ensemble d’échangeur(s) (4, 5, 6, 7, 8) de chaleur en échange thermique avec le circuit (3) d’hydrogène à refroidir, l’installation (1) comprenant au moins un dispositif (9, 10) de refroidissement en échange thermique avec au moins une partie de l’ensemble d’échangeur(s) (4, 5, 6, 7, 8) de chaleur, l’installation (1) comprenant un circuit (190) d’oxygène comprenant une extrémité amont reliée à la sortie d’oxygène et une extrémité aval (11), le circuit (9) d’oxygène comprenant un système (13) de détente du flux d’oxygène et au moins un échange de chaleur entre le flux d’oxygène détendu et le circuit (3) d’hydrogène à refroidir, caractérisée en ce que le circuit (190) d’oxygène comprend un moins un compresseur (12) de l’oxygène disposé en amont du système (13) de détente du flux d’oxygène, le système (13) de détente du flux d’oxygène comprenant une turbine (13) de détente et en ce que ladite turbine (13) de détente et ledit compresseur (12) sont accouplés à un même arbre (14) rotatif pour transférer du travail de détente du flux d’oxygène sous pression au compresseur (12) pour comprimer le flux d’oxygène en amont de la turbine (13). Figure de l’abrégé : Fig. 1 Installation and method for producing hydrogen at cryogenic temperature, comprising an electrolyser (2), a hydrogen circuit (3) to be cooled comprising an upstream end connected to the hydrogen outlet and a downstream end (22) intended to be connected to a unit (23) for collecting cooled and/or liquefied hydrogen, the installation (1) comprising a set of heat exchanger(s) (4, 5, 6, 7, 8) for heat exchange with the hydrogen circuit (3) to be cooled, the ...

Natural gas letdown liquefaction system

A conventional air separator unit separates nitrogen, oxygen or argon merchant gas to be liquefied. Input pressurized natural gas is processed through a pressure letdown liquefaction system including gas separators for removing moisture and for drying the gas. The dried gas is then separated into large and small gas stream portions wherein CO 2 in the smaller portion is removed. The two portions are passed through a first heat exchanger from which the larger portion is expanded which cools it and then passed through two heat exchangers including the first exchanger, used to regenerate the CO 2 separator and drier and then returned to the input stream. The smaller portion is passed through the two heat exchangers to a throttle valve where the gas is liquefied and processed to a second set of heat exchangers which receive compressed separated merchant gas to be cooled by the liquefied natural gas and liquefied via an additional heat exchanger which receives cooled vapor separated from the liquefied merchant gas, the vapor being formed by a flash valve. The vapor is repetitively recycled through a compressor and passed through the second set of heat exchangers. Different embodiments are disclosed including a compander for expanding the merchant gas which is passed through the first and second set of heat exchangers and including an embodiment for supplying cold merchant gas rather than liquid merchant gas to an air separation unit for producing liquefied merchant gases.

PROCESS AND PLANT FOR TRANSFERRING LIQUID HYDROGEN.

PROCESS FOR THE PRODUCTION OF LIQUID BIOMETHANE BY CRYOGENIC SEPARATION

Procédé de production de biométhane liquide par séparation cryogénique à partir d'un flux de biogaz (1) comprenant du méthane et du dioxyde de carbone comprenant : - une première étape de production de biométhane (4) par séparation cryogénique du flux de biogaz (1) dans un régénérateur cryogénique (3), - une deuxième étape de liquéfaction du biométhane (4) dans un échangeur, avec la première et la deuxième étape mettant en œuvre un circuit unique d'azote. Process for the production of liquid biomethane by cryogenic separation from a biogas stream (1) comprising methane and carbon dioxide, comprising: - a first stage of production of biomethane (4) by cryogenic separation of the biogas stream (1) ) in a cryogenic regenerator (3), - a second biomethane liquefaction step (4) in an exchanger, with the first and the second stage using a single nitrogen circuit.

Cold heat recovery apparatus using an lng fuel, and liquefied gas carrier including same

本发明涉及一种使用LNG燃料的寒热回收设备，其在来自液化气的蒸发气体被再液化为货物时回收来自LNG燃料的寒热，从而减少用于安装和操作再液化设备所需的成本，且减少能量消耗和环境污染材料，而在再液化过程中不会消耗额外的能量，且本发明涉及包含所述设备的液化气运输船。根据本发明，使用来自LNG燃料的寒热来处理液化气罐中所产生的蒸发气体的寒热回收设备包含寒热使用单元，所述寒热使用单元使用来自从储存LNG的LNG燃料罐作为燃料供应给引擎的LNG的寒热来处理在液化气罐中所产生的蒸发气体。

Method and apparatus for liquefying and storing natural gas rich in methane