RU2017100038A - Liquefaction method and device for gas processing (options) - Google Patents

Liquefaction method and device for gas processing (options) Download PDF

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Publication number
RU2017100038A
RU2017100038A RU2017100038A RU2017100038A RU2017100038A RU 2017100038 A RU2017100038 A RU 2017100038A RU 2017100038 A RU2017100038 A RU 2017100038A RU 2017100038 A RU2017100038 A RU 2017100038A RU 2017100038 A RU2017100038 A RU 2017100038A
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pressure
stream
process stream
heat exchanger
fluid circuit
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RU2017100038A
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RU2731153C2 (en
RU2017100038A3 (en
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Эдуардо АНДРАДЕ
Негар ДАВАНИ
Дэвид Аллен КЕННЕДИ
Джон Рэймонд ЗИГТЕМА
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ДжиИ Ойл энд Гэс, Инк.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0035—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by gas expansion with extraction of work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/007—Primary atmospheric gases, mixtures thereof
    • F25J1/0072—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/008—Hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0203—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
    • F25J1/0204—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle as a single flow SCR cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0203—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
    • F25J1/0208—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle in combination with an internal quasi-closed refrigeration loop, e.g. with deep flash recycle loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0211—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
    • F25J1/0212—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a single flow MCR cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0211—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
    • F25J1/0219—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle in combination with an internal quasi-closed refrigeration loop, e.g. using a deep flash recycle loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0229—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock
    • F25J1/0231—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock for the working-up of the hydrocarbon feed, e.g. reinjection of heavier hydrocarbons into the liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/08—Separating gaseous impurities from gases or gaseous mixtures or from liquefied gases or liquefied gaseous mixtures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
    • F25J2220/64—Separating heavy hydrocarbons, e.g. NGL, LPG, C4+ hydrocarbons or heavy condensates in general
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/30—Compression of the feed stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/60—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being hydrocarbons or a mixture of hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/66—Closed external refrigeration cycle with multi component refrigerant [MCR], e.g. mixture of hydrocarbons

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Claims (56)

1. Способ сжижения, включающий:1. The method of liquefaction, including: сжатие технологического потока до достижения первого давления;compression of the process stream until the first pressure is reached; охлаждение технологического потока до первой температуры;cooling the process stream to a first temperature; расширение технологического потока от первого давления до достижения второго давления, которое ниже, чем первое давление;expanding the process stream from the first pressure to a second pressure that is lower than the first pressure; отведение первого продукта от технологического потока при втором давлении; иdiverting the first product from the process stream at a second pressure; and кондиционирование первого продукта для хранения в виде сжиженного природного газа (СПГ).conditioning the first storage product in the form of liquefied natural gas (LNG). 2. Способ сжижения по п. 1, дополнительно включающий:2. The liquefaction method according to claim 1, further comprising: сжатие технологического потока от второго давления до достижения промежуточного давления, которое находится между первым давлением и вторым давлением.compressing the process stream from the second pressure to an intermediate pressure that is between the first pressure and the second pressure. 3. Способ сжижения по п. 1, в котором технологический поток включает жидкость при первом давлении.3. The liquefaction method of claim 1, wherein the process stream comprises a liquid at a first pressure. 4. Способ сжижения по п. 3, в котором технологический поток включает как пар, так и жидкость при втором давлении.4. The liquefaction process of claim 3, wherein the process stream includes both steam and liquid at a second pressure. 5. Способ сжижения по п. 1, в котором отношение первого давления и второго давления составляет от 3 до 10.5. The liquefaction method according to claim 1, wherein the ratio of the first pressure to the second pressure is from 3 to 10. 6. Способ сжижения по п. 1, дополнительно включающий:6. The liquefaction method according to claim 1, further comprising: формирование технологического потока из сырья, имеющего концентрацию метана 84% или выше.the formation of the process stream from raw materials having a methane concentration of 84% or higher. 7. Способ сжижения по п. 6, дополнительно включающий:7. The liquefaction method according to claim 6, further comprising: формирование из сырья первого потока и второго потока, каждый из которых содержит преимущественно пары метана; причем технологический поток включает первый поток и второй поток.the formation of raw materials of the first stream and the second stream, each of which contains mainly methane vapor; moreover, the process stream includes a first stream and a second stream. 8. Способ сжижения по п. 7, дополнительно включающий:8. The liquefaction method according to claim 7, further comprising: введение первого потока в технологический поток при промежуточном давлении.introducing the first stream into the process stream at an intermediate pressure. 9. Способ сжижения по п. 7, дополнительно включающий:9. The liquefaction method according to claim 7, further comprising: введение второго потока в технологический поток при втором давлении.introducing a second stream into the process stream at a second pressure. 10. Способ сжижения по п. 7, дополнительно включающий:10. The liquefaction method according to claim 7, further comprising: разделение сырья на первый поток и первый кубовый продукт;separation of raw materials into a first stream and a first bottoms product; перегонку первого кубового продукта с образованием второго потока и второго кубового продукта.distillation of the first bottoms product to form a second stream and a second bottoms product. 11. Устройство для переработки газа, включающее:11. A device for processing gas, including: теплообменник;heat exchanger; контур циркуляции текучей среды, соединенный с теплообменником, при этом контур циркуляции текучей среды направляет технологический поток через теплообменник;a fluid circuit connected to the heat exchanger, the fluid circuit directing the process stream through the heat exchanger; причем контур циркуляции текучей среды выполнен с возможностью:moreover, the fluid circuit is configured to: осуществления сжатия технологического потока до достижения первого давления;compressing the process stream until the first pressure is reached; осуществления пропускания технологического потока через теплообменник при первом давлении;transmitting a process stream through a heat exchanger at a first pressure; осуществления расширения технологического потока от первого давления до достижения второго давления, которое ниже, чем первое давление;the implementation of the expansion of the process stream from the first pressure to achieve a second pressure that is lower than the first pressure; отведения первого потока от технологического потока при втором давлении; иdiverting the first stream from the process stream at a second pressure; and осуществления кондиционирования первого потока для хранения в виде сжиженного природного газа (СПГ).conditioning the first stream for storage in the form of liquefied natural gas (LNG). 12. Устройство для переработки газа по п. 11, дополнительно включающее:12. A device for processing gas according to claim 11, further comprising: блок охлаждения, соединенный с теплообменником;a cooling unit connected to a heat exchanger; причем блок охлаждения выполнен с возможностью осуществления циркуляции холодильного агента через теплообменник.moreover, the cooling unit is configured to circulate the refrigerant through a heat exchanger. 13. Устройство для переработки газа по п. 11, в котором контур циркуляции текучей среды выполнен с возможностью приема сырья и осуществления циркуляции сырья в качестве технологического потока.13. The gas processing device according to claim 11, wherein the fluid circuit is adapted to receive raw materials and circulate the raw materials as a process stream. 14. Устройство для переработки газа по п. 13, дополнительно включающее:14. A device for processing gas according to claim 13, further comprising: блок предварительной обработки, соединенный с контуром циркуляции текучей среды и с теплообменником; при этом блок предварительной обработки имеет:a pre-treatment unit connected to a fluid circuit and to a heat exchanger; wherein the pre-processing unit has: блок сепаратора, выполненный с возможностью приема сырья ниже по потоку относительно теплообменника; иa separator unit configured to receive raw materials downstream of the heat exchanger; and деметанизатор, присоединенный ниже по потоку относительно блока сепаратора;a demethanizer attached downstream of the separator unit; при этом блок сепаратора и деметанизатор выполнены с возможностью формирования первого потока и второго потока, соответственно, каждый из которых содержит пары метана; иwherein the separator unit and demethanizer are configured to form a first stream and a second stream, respectively, each of which contains methane vapor; and при этом технологический поток включает первый поток и второй поток.wherein the process stream includes a first stream and a second stream. 15. Устройство для переработки газа, включающее:15. A device for gas processing, including: теплообменник; иheat exchanger; and контур циркуляции текучей среды, соединенный с теплообменником, причем контур циркуляции текучей среды выполнен с возможностью осуществления циркуляции технологического потока через теплообменник; при этом контур циркуляции текучей среды включает:a fluid circuit connected to the heat exchanger, the fluid circuit being configured to circulate the process stream through the heat exchanger; wherein the fluid circuit includes: компрессор метана, соединенный с теплообменником;a methane compressor connected to a heat exchanger; турбокомпрессор, расположенный между компрессором метана и теплообменником;a turbocharger located between the methane compressor and the heat exchanger; турбодетандер, соединенный с компрессором и теплообменником; иa turboexpander connected to a compressor and a heat exchanger; and первый блок сепаратора, расположенный между турбодетандером и теплообменником.a first separator unit located between the turboexpander and the heat exchanger. 16. Устройство для переработки газа по п. 15, в котором компрессор метана выполнен с возможностью осуществления сжатия технологического потока до достижения первого давления, а турбодетандер выполнен с возможностью осуществления расширения технологического потока до достижения второго давления, при этом отношение между первым давлением и вторым давлением поддерживают в диапазоне от 3 до 10.16. The gas processing device according to claim 15, wherein the methane compressor is configured to compress the process stream until the first pressure is reached, and the turboexpander is configured to expand the process stream until the second pressure is reached, wherein the ratio between the first pressure and the second pressure support in the range of 3 to 10. 17. Устройство для переработки газа по п. 16, в котором турбокомпрессор выполнен с возможностью осуществления сжатия технологического потока до достижения промежуточного давления, которое находится между первым давлением и вторым давлением.17. The device for processing gas under item 16, in which the turbocharger is configured to compress the process stream to achieve an intermediate pressure that is between the first pressure and the second pressure. 18. Устройство для переработки газа по п. 17, в котором компрессор метана выполнен с возможностью осуществления сжатия технологического потока от промежуточного давления до достижения первого давления.18. The gas processing device according to claim 17, wherein the methane compressor is configured to compress the process stream from the intermediate pressure to the first pressure. 19. Устройство для переработки газа по п. 15, дополнительно включающее:19. A device for processing gas according to claim 15, further comprising: второй блок сепаратора, соединенный с теплообменником и с компрессором метана; иa second separator unit connected to a heat exchanger and to a methane compressor; and деметанизатор, соединенный со вторым блоком сепаратора и с первым блоком сепаратора.a demethanizer connected to the second separator unit and to the first separator unit. 20. Устройство для переработки газа по п. 15, дополнительно включающее:20. A device for processing gas according to claim 15, further comprising: расширительный клапан, расположенный ниже по потоку относительно первого блока сепаратора и теплообменника.an expansion valve located downstream relative to the first block of the separator and heat exchanger.
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