Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 21. Отображено 21.
11-02-2015 дата публикации

Method for removing olefins by means of hydrogenation of reformed oil

Номер: CN104342201A
Принадлежит:

The invention relates to a method for removing olefins by means of hydrogenation of reformed oil. Active components of a catalyst include at least one of Pt and Pd; an additive is selected from one or two of Sn and Pb; a carrier is Al2O3; noble metals are distributed on the carrier in the form of thin egg shells; the egg shells are 0.05mm to 1mm in thickness; the specific surface area of the catalyst is 50m<2>/g to 400m<2>/g; the pore volume is 0.2cm<3>/g to 1.2cm<3>/g, wherein 50-80 percent of a total pore passage of the catalyst are pores of which the pore diameter is 5nm to 50nm; the content of the active components in percentage by mass is 0.05wt% to 0.5wt%; the content of the additive in percentage by mass is 0.5wt% to 10wt%; the balance is the carrier. According to the method, by using the catalyst, the amount of used noble metals is reduced and the utilization rate of the noble metals is increased; by adding an inorganic metal additive to inhibit the initial activity of the catalyst ...

Подробнее
17-12-2014 дата публикации

Method for controlling hydrogen-gasoline mixing ratio of catalytic gasoline selective hydrogenation

Номер: CN104212483A
Принадлежит:

The invention relates to a method for controlling the hydrogen-gasoline mixing ratio of catalytic gasoline selective hydrogenation. The method is completed by a flow ratio control system. The system is located on a gasoline pipeline connecting a selective hydrogenation reaction feeding pump outlet and a feed heat exchanger inlet and a hydrogen feed pipeline, and is composed of a gasoline flow orifice plate, a gasoline flow regulating valve, a hydrogen flow orifice plate, a hydrogen flow regulating valve, and a hydrogen calculator. The gasoline feed flow control and the hydrogen feed flow control are realized respectively through the flow transmitter and control valve on each pipeline. The hydrogen calculator calculates a needed hydrogen flow according to the gasoline flow and an initial given hydrogen-gasoline mixing ratio. The flow of hydrogen entering a selective hydrogenation reactor is controlled, the flow adjusted hydrogen is mixed with gasoline and heat exchange is carried out, and ...

Подробнее
11-02-2015 дата публикации

Method for presulfurizing catalytic gasoline hydrogenation catalyst

Номер: CN104338565A
Принадлежит:

The invention relates to a method for presulfurizing a catalytic gasoline hydrogenation catalyst. The method comprises the following steps: introducing naphtha into a buffer tank through a filter, the buffer tank, a feed pump, a heat exchanger shell side, a heating furnace, a prehydrogenation reactor, a hydrodesulfurization reactor, a heat exchanger tube side, an air cooler and a separation tank; introducing new hydrogen into a hydrogen mixing point through a new hydrogen liquid separation tank, a new hydrogen compressor, the hydrogen mixing point, the heat exchanger shell side, the heating furnace, the prehydrogenation reactor, the hydrodesulfurization reactor, the heat exchanger tube side, the air cooler, the separation tank, a circulating hydrogen cooler, a circulating hydrogen desulfurization tower inlet liquid separation tank, a circulating hydrogen desulfurization tower span line, a circulating hydrogen compressor inlet liquid separation tank and a circulating hydrogen compressor.

Подробнее
22-06-2011 дата публикации

Method for modifying NaY molecular sieves

Номер: CN0101570334B
Принадлежит:

The invention relates to a method for modifying NaY molecular sieves through ion exchange resin, wherein ion exchange reaction is performed in two adjacent reaction chambers and slurry and resin of the molecular sieves are separated by screen cloth and separately arranged inside the two reaction chambers, so that the NaY molecular sieves do not directly contact with the ion exchange resin but hydrogen ions and sodium ions can pass through the screen cloth and exchange can be realized under the action of the concentration difference of the hydrogen ions and the sodium irons. The method can solve the problems of subsequent wastewater treatment by an ammonium salt method, and the like. The invention also solves the problems generated under the condition of separation of the resin and the NaYmolecular sieves in the prior resin method. The Na2O content of the obtained product can be reduced to be less than 1 weight percent, and the crystallinity of the obtained product can be kept to be more ...

Подробнее
03-06-2015 дата публикации

Method for steam injection into vacuum furnace tube

Номер: CN104673354A
Принадлежит:

The invention discloses a method for steam injection into a vacuum furnace tube. The method comprises the following steps of 1, recording parameters of oil in a vacuum furnace tube, 2, determining positions of bubble points in the oil in the vacuum furnace tube, 3, determining a smallest amount of steam injected into the positions of the bubble points, and 4, carrying out steam injection at the positions of the bubble points according to the smallest amount. Through the parameters of oil, the positions of the bubble points of the oil are determined, temperatures at the positions of the bubble points are high so that the oil can be fast gasified only by injection of a small amount of steam into the furnace tube from the bubble points and oil and steam phases are transformed into annular flows from bubble flows and thus oil and steam blocky flows are avoided, coking in the furnace tube is reduced, water attack of the oil is prevented, and water attack-caused noise, furnace tube shaking and ...

Подробнее
01-10-2014 дата публикации

On-line sulfuration fluidized bed reaction device for olefin production by alkane dehydrogenation and method

Номер: CN104069778A
Принадлежит:

The invention discloses an on-line sulfuration fluidized bed reaction device for olefin production by alkane dehydrogenation and a method, and belongs to the field of olefin preparation. The fluidized bed reaction device comprises a reactor, a regenerator, a pre-sulfurization machine and some accessory devices. One end of the pre-sulfurization machine is connected to the regenerator, and the other end is connected to the reactor. The method includes steps of: preparing a sulfide catalyst, and performing a catalytic dehydrogenation reaction, a sulfide catalyst regeneration process and a pre-sulfurization process in the fluidized bed reaction device. By adoption of the fluidized bed reaction device and the method, an olefin preparation process is cyclic and performed continuously, the catalyst is in a fluidized state all the time in the reactor, the regenerator and the pre-sulfurization machine and a sulfide catalyst surface active component is in a form of a sulfide all the time, thus maintaining ...

Подробнее
20-07-2005 дата публикации

Method for manufacturing oil slurry vapour generator

Номер: CN0001641307A
Принадлежит:

The invention is a slurry oil steam generator manufacturing method, used in a remaining heat of catalytic cracking equipment recovering and heat exchanging system of petrochemical industry. It enlarges evaporation space between shell side and heat exchange pipe as well as between shell and heat exchange pipe; both the shell side and the shell are arranged axially and uniformly with a group of ascending pipes and descending pipes; the distance between the heat exchange pipes on a pipe plate and a support plate is greater than that of an ordinary heat exchanger and the pipe beam axially adopts the support plate to make the heat exchange pipes obtain an excellent support. The no-heat exchange pipe parts on the top and bottom sides of the support plate are cut off and the left and right sides of the support plate are uniformly made with holes, the connector adopted between the pipe plate and the heat exchange pipe is a butt connector; flexible graphite and enhancement metal combined pad sealing ...

Подробнее
18-03-2015 дата публикации

Electric desalting and electric dehydrating power supply equipment and control method thereof

Номер: CN104419450A
Принадлежит:

The invention discloses electric desalting and electric dehydrating power supply equipment and a control method thereof, and belongs to the field of crude oil treatment of an oil field. The power supply equipment comprises an adjusting module, a transformer module and an electric desalting tank body, wherein a first input end of the adjusting module is connected with a first phase of a three-phase power supply; a second input end of the adjusting module is connected with a second phase of the three-phase power supply; a third input end of the adjusting module is connected with a third phase of the three-phase power supply; an output end of the adjusting module is connected with the input end of the transformer module; and the output end of the transformer module is connected with the electric desalting tank body, so that an electric field is formed in the electric desalting tank body, and thus electric desalting and electric dehydrating on the crude oil are achieved. According to the electric ...

Подробнее
07-03-2012 дата публикации

Method for modifying molecular sieve

Номер: CN0101823727B
Принадлежит:

The invention relates to a method for modifying a molecular sieve. A ceramic membrane technique is applied to a molecular sieve modification process, so that the modification of an NaY molecular sieve by using a cation exchange resin is realized, direct contact of the NaY molecular sieve with the cation exchange resin is avoided and the regeneration difficulty of the resin is reduced. Non-direct contact exchange is adopted, so that raw material wastage of the molecular sieve because the molecular sieve is adhered to the resin when the molecular sieve is separated from the resin is avoided andthe regeneration difficulty of the resin is reduced; alternatively used ion exchange columns can regenerate the resin without separately taking the resin out, so that operation becomes convenient; and the solid and liquid separating property of the ceramic membrane technique is combined and ion diffusion in two-phase solution is accelerated by using a ceramic membrane, so that the modification reaction ...

Подробнее
04-05-2011 дата публикации

Method for controlling and reforming ultrahigh final boiling point of high-octane gasoline blending component

Номер: CN0102041030A
Принадлежит:

The invention relates to a method for controlling and reforming an ultrahigh final boiling point of a high-octane gasoline blending component. The method comprises the following steps: feeding C8<+> into the middle part of a xylene tower; after xylene fractions (at the top of the tower) as the heat sources of other heat-used devices are cooled, returning the xylene fractions to a reflux accumulator at the top of the xylene tower, pressurizing the xylene fractions, then returning part of the pressurized xylene fractions to the xylene tower to serve as reflux, and cooling the rest part of xylene fractions to serve as products; carrying out fluid-phase side-draw on the side high-octane gasoline blending component at the lower part of the retention section of the xylene tower so as to draw out C9 to C10 components, after carrying out waste heat recovery on the C9 to C10 components by utilizing a heat exchanger, cooling the C9 to C10 components and then sending the C9 to C10 components to a ...

Подробнее
18-03-2015 дата публикации

Method for drying catalytic gasoline hydrogenation catalyst

Номер: CN104422249A
Принадлежит:

The invention relates to a method for drying a catalytic gasoline hydrogenation catalyst. Nitrogen gas is returned to a recycled hydrogen compressor after passing through a recycled hydrogen compressor, a hydrogenation desulfurization feeding/reaction product heat exchanger shell side, a hydrogenation desulfurization reaction product heating furnace, a heavy petrol hydrogenation desulfurization reactor and an arsenic removal reactor which are connected in series, the hydrogenation desulfurization feeding/reaction product heat exchanger shell side, a hydrogenation desulfurization reaction product air cooler, a hydrogenation desulfurization reaction product separating tank, a recycled hydrogen cooler, an inlet liquid-separating tank of the recycled hydrogen desulfurization tower, a recycled hydrogen desulfurization tower cross line, an inlet liquid-separating tank of the recycled hydrogen compressor. Part of equipment and pipeline in the normal operation flow are utilized, and a few cross ...

Подробнее
17-12-2014 дата публикации

Method for removing arsenic from catalytic gasoline hydrogenation raw material

Номер: CN104212487A
Принадлежит:

The invention relates to a method for removing arsenic from a catalytic gasoline hydrogenation raw material. According to the method, when a fixed bed hydrogenation technology is adopted for hydrotreatment on catalytic cracking gasoline, Ni-Mo and Co-Mo series catalysts are used as the hydrogenation catalysts, and when the arsenic content of the raw material is greater than or equal to 20ppbw, the catalytic cracking gasoline firstly enters a coalescence dehydration device to undergo coalescence dehydration so as to make the free water content less than or equal to 100ppm, and the dehydrated catalytic cracking gasoline enters a dearsenication reactor by means of entering at bottom and leaving at top. The inlet temperature of the dearsenication reactor is the catalytic gasoline feed temperature 40DEG C, the inlet pressure is the catalytic gasoline feed pressure 0.5-1.0MPag, and the volume space velocity is 1.5-2.0h<-1>. The method provided by the invention can make the arsenic content of ...

Подробнее
01-10-2014 дата публикации

Fluidized bed reaction device for olefin production by alkane dehydrogenation and method

Номер: CN104069779A
Принадлежит:

The invention discloses a fluidized bed reaction device for olefin production by alkane dehydrogenation and a method, and belongs to the field of olefin preparation. The fluidized bed reaction device comprises a reactor, a regenerator, a pre-sulfurization section and some accessory devices. The pre-sulfurization section is disposed below the regenerator, and is connected to the reactor through a regeneration inclined tube. The method includes steps of: preparing a sulfide catalyst, and performing a catalytic dehydrogenation reaction, a sulfide catalyst regeneration process and a pre-sulfurization process in the fluidized bed reaction device. By adoption of the fluidized bed reaction device and the method, an olefin preparation process is cyclic and performed continuously, the catalyst is in a fluidized state all the time in the reactor, the regenerator and the pre-sulfurization section and a sulfide catalyst surface active component is in a form of a sulfide all the time, thus maintaining ...

Подробнее
29-08-2023 дата публикации

Heat-taking non-water-taking mode heating system for medium-deep geothermal energy

Номер: CN116659103A
Принадлежит:

The invention belongs to the field of geothermal energy utilization, and discloses a heat-taking non-water-taking mode heating system for medium-deep geothermal energy, which specifically comprises a heat source input module, a heat exchanger module, a heating module, a flow control module, a temperature sensor module, a wireless transmission module, a signal enhancement module and a frequency conversion control module, by adopting the closed circulating buried pipe heat exchanger, the geothermal energy of the underground rock stratum is extracted in a heat conduction mode, underground water does not need to be consumed, the underground heat exchanger goes deep into the deep heat storage aquifer, the heat exchange effect is improved through the convection effect of the underground water, and geological conditions are not polluted or disturbed. Meanwhile, the system can adjust the input water flow in real time through the frequency conversion control module according to loads and heat source ...

Подробнее
14-07-2023 дата публикации

Method for removing phosphorus from acidic phosphorus-containing wastewater

Номер: CN116425331A
Принадлежит:

The invention relates to a phosphorus removal method for acidic phosphorus-containing wastewater, which comprises the following steps: 1) carrying out mud-water separation on catalyst wastewater to obtain phosphorus-containing waste liquid and sludge; (2) adding electrolyte salts into the phosphorus-containing waste liquid, and stirring and homogenizing; (3) alkali is continuously added into the phosphorus-containing waste liquid, the pH of the phosphorus-containing waste liquid is adjusted to be 3-7, and the waste liquid is in a sol state; and 4) carrying out solid-liquid separation on the sol-like waste liquid. After the ultrahigh-concentration phosphorus-containing catalyst wastewater with the concentration exceeding 10000 mg/L is treated, the phosphorus content is reduced to 3 mg/L or below, efficient phosphorus removal of the ultrahigh-phosphorus-containing catalyst wastewater is achieved, and impact on a sewage treatment plant is avoided.

Подробнее
11-07-2023 дата публикации

Absorbent for deep mercaptan removal of refinery fuel gas as well as preparation method and application of absorbent

Номер: CN116407927A
Принадлежит:

The invention discloses an absorbent for deep mercaptan removal of refinery fuel gas and a preparation method and application thereof, and the absorbent comprises the following components in percentage by mass: 1.0%-10.0% of organic alcohol amine, 0.5%-20.0% of organic solvent, 2.0%-30.0% of oxidizing solvent, 0.2%-1.0% of inorganic salt and the balance of water. The absorption method is a method for deeply removing the organic mercaptan in the fuel gas by using the absorbent under a super-gravity field, and super-gravity absorption equipment is simple to operate, small in occupied area, small in using amount of the absorbent, high in impact resistance and low in investment and operation cost. The absorbent provided by the invention is composed of the organic alcohol amine, the organic solvent, the oxidizing solvent, the inorganic salt and the water, is wide in raw material source, low in price, non-toxic and harmless, simple to prepare and safe to transport and store, can simultaneously ...

Подробнее
04-11-2009 дата публикации

Method for modifying NaY molecular sieves

Номер: CN0101570334A
Принадлежит:

The invention relates to a method for modifying NaY molecular sieves through ion exchange resin, wherein ion exchange reaction is performed in two adjacent reaction chambers and slurry and resin of the molecular sieves are separated by screen cloth and separately arranged inside the two reaction chambers, so that the NaY molecular sieves do not directly contact with the ion exchange resin but hydrogen ions and sodium ions can pass through the screen cloth and exchange can be realized under the action of the concentration difference of the hydrogen ions and the sodium irons. The method can solve the problems of subsequent wastewater treatment by an ammonium salt method, and the like. The invention also solves the problems generated under the condition of separation of the resin and the NaY molecular sieves in the prior resin method. The Na2O content of the obtained product can be reduced to be less than 1 weight percent, and the crystallinity of the obtained product can be kept to be more ...

Подробнее
18-03-2015 дата публикации

Method for producing reformer feedstock through blending of inferior gasoline and hydrofining

Номер: CN104419451A
Принадлежит:

The invention relates to a method for producing reformer feedstock through blending of inferior gasoline and hydrofining. The method comprises the following step: after vulcanizing a catalyst by using a single-stage single-dosage technological process, producing the reformer feedstock through catalyzing naphtha fraction obtained through hydrofining and blending catalyzed and coked inferior secondarily-processed gasoline under the technological conditions of reaction temperature of 220-340 DEG C, hydrogen partial pressure of 1.0-6.0 MPa, hydrogen-oil volume ratio of 100: 1-500: 1 and volume airspeed of 1.0-8.0h<-1>, wherein the catalyst takes modified aluminum oxide as a carrier and takes at least one of group VIII metals such as Fe, Co and Ni and at least one of group VIB metals such as Mo and W as active components, and the modified aluminum oxide carrier indicates that an Al2O3 carrier is modified by introducing a group IV B metal-containing modifier during the forming of the Al2O3 carrier ...

Подробнее
22-06-2005 дата публикации

Welding structure of bottom seal head and skirt for large-scale container

Номер: CN0001629057A
Принадлежит:

This invention relates to a large capacitor bottom enclosure head and skirt wielding part, which comprises the following: enclosure head, upper angle wielding seal, wielding wire, down angle wielding seal, skirt socket upper part, skirt cylinder, ring wielding seam, and cushion plate. There are located with wielding wire and upper angle wielding seam and down angle wielding seam and cushion plate between the enclosure head and skirt socket.

Подробнее
08-09-2010 дата публикации

Method for modifying molecular sieve

Номер: CN0101823727A
Принадлежит:

The invention relates to a method for modifying a molecular sieve. A ceramic membrane technique is applied to a molecular sieve modification process, so that the modification of an NaY molecular sieve by using a cation exchange resin is realized, direct contact of the NaY molecular sieve with the cation exchange resin is avoided and the regeneration difficulty of the resin is reduced. Non-direct contact exchange is adopted, so that raw material wastage of the molecular sieve because the molecular sieve is adhered to the resin when the molecular sieve is separated from the resin is avoided and the regeneration difficulty of the resin is reduced; alternatively used ion exchange columns can regenerate the resin without separately taking the resin out, so that operation becomes convenient; and the solid and liquid separating property of the ceramic membrane technique is combined and ion diffusion in two-phase solution is accelerated by using a ceramic membrane, so that the modification reaction ...

Подробнее
11-08-2023 дата публикации

High-efficiency temperature control heat removal system of medium-deep geothermal energy heat exchange station

Номер: CN116576587A
Принадлежит:

The invention belongs to the field of geothermal energy utilization, and discloses a medium-deep geothermal energy heat exchange station efficient temperature control heat extraction system which specifically comprises a heat source input module, a heat exchanger module, a flow control module, a temperature sensor module, a wireless transmission module, a signal enhancement module and a frequency conversion control module. The problems that in the using process of an existing efficient temperature control heat taking system of the medium-deep layer geothermal energy heat exchange station, operation strategies cannot be flexibly adjusted according to heat source supply states at different stages, and therefore flexibility of heat supply control of the system is reduced, and certain inconvenience is caused to the heat supply process of the whole system are solved. Efficient heat pump circulation and heat exchange technologies are utilized, geothermal energy is utilized to the maximum extent ...

Подробнее