RU2013122004A - METHOD FOR PARTIAL LIQUIDATION OF NATURAL GAS (OPTIONS) - Google Patents

METHOD FOR PARTIAL LIQUIDATION OF NATURAL GAS (OPTIONS) Download PDF

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Publication number
RU2013122004A
RU2013122004A RU2013122004/06A RU2013122004A RU2013122004A RU 2013122004 A RU2013122004 A RU 2013122004A RU 2013122004/06 A RU2013122004/06 A RU 2013122004/06A RU 2013122004 A RU2013122004 A RU 2013122004A RU 2013122004 A RU2013122004 A RU 2013122004A
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RU
Russia
Prior art keywords
stream
distillation column
direct
sent
cooling
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RU2013122004/06A
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Russian (ru)
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RU2543255C2 (en
Inventor
Станислав Прокофьевич Горбачев
Илья Сергеевич Медведков
Original Assignee
Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий-Газпром ВНИИГАЗ"
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Priority to RU2013122004/06A priority Critical patent/RU2543255C2/en
Publication of RU2013122004A publication Critical patent/RU2013122004A/en
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Classifications

    • 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
    • F25J1/0037—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 of a return 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
    • 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"
    • F25J1/004—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 flash gas recovery
    • 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"
    • F25J1/0045—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 vaporising a liquid return 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
    • 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
    • F25J1/0201—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 only internal refrigeration means, i.e. without external refrigeration
    • 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
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
    • F25J2220/66—Separating acid gases, e.g. CO2, SO2, H2S or RSH

Landscapes

  • 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)

Abstract

1. Способ частичного сжижения природного газа, включающий предварительное охлаждение прямого потока газа высокого давления, отличающийся тем, что после охлаждения прямой поток дросселируют и разделяют в ректификационной колонне на жидкую фракцию и паровую фракцию, которую направляют на реконденсацию с последующим направлением части реконденсированного продукционного потока в ректификационную колонну в качестве флегмового орошения, а также дросселированием другой части реконденсированного продукционного потока и разделением ее на жидкостную фазу, являющуюся готовым продуктом, и паровую фазу, направляемую далее в качестве обратного потока для охлаждения прямого потока, а жидкую фракцию из ректификационной колонны расширяют и, за счет реконденсации паровой фракции из ректификационной колонны, испаряют, далее нагревают прямым потоком, а после повторного дросселирования направляют в обратный поток.2. Способ частичного сжижения природного газа, включающий предварительное охлаждение прямого потока газа высокого давления, отличающийся тем, что после охлаждения прямой поток разделяют на два потока, первый из которых направляют в расширяющее устройство и далее отправляют в обратный поток, а второй охлаждают и разделяют в ректификационной колонне на жидкую фракцию и паровую фракцию, которую направляют на реконденсацию с последующим направлением части реконденсированного продукционного потока в ректификационную колонну в качестве флегмового орошения, а также дросселированием другой части реконденсированного продукционного потока и разделением ее на жидкостную фазу, являющуюся готовым продуктом, и 1. A method for partial liquefaction of natural gas, including pre-cooling of a direct high-pressure gas stream, characterized in that after cooling, the direct stream is throttled and separated in a distillation column into a liquid fraction and a vapor fraction, which is sent for recondensation with the subsequent direction of a part of the recondensed product stream into a distillation column as reflux reflux, as well as throttling another part of the recondensed product stream and separating it into a liquid phase, which is a finished product, and a vapor phase, directed further as a reverse flow to cool the direct flow, and the liquid fraction from the distillation column is expanded and, due to the recondensation of the vapor fraction from the distillation column, it is evaporated, then heated in a direct flow, and after repeated throttling, it is sent to the reverse flow. 2. A method for partial liquefaction of natural gas, including pre-cooling of a direct high-pressure gas stream, characterized in that after cooling, the direct stream is divided into two streams, the first of which is sent to an expansion device and then sent to a reverse stream, and the second is cooled and separated in a distillation column into a liquid fraction and a vapor fraction, which is sent for recondensation with the subsequent direction of a part of the recondensed product stream into a distillation column as reflux reflux, as well as throttling another part of the recondensed product stream and separating it into a liquid phase, which is a finished product, and

Claims (2)

1. Способ частичного сжижения природного газа, включающий предварительное охлаждение прямого потока газа высокого давления, отличающийся тем, что после охлаждения прямой поток дросселируют и разделяют в ректификационной колонне на жидкую фракцию и паровую фракцию, которую направляют на реконденсацию с последующим направлением части реконденсированного продукционного потока в ректификационную колонну в качестве флегмового орошения, а также дросселированием другой части реконденсированного продукционного потока и разделением ее на жидкостную фазу, являющуюся готовым продуктом, и паровую фазу, направляемую далее в качестве обратного потока для охлаждения прямого потока, а жидкую фракцию из ректификационной колонны расширяют и, за счет реконденсации паровой фракции из ректификационной колонны, испаряют, далее нагревают прямым потоком, а после повторного дросселирования направляют в обратный поток.1. The method of partial liquefaction of natural gas, including pre-cooling the direct flow of high pressure gas, characterized in that after cooling the direct flow is throttled and separated in a distillation column into a liquid fraction and a vapor fraction, which is sent for condensation with the subsequent direction of the part of the condensed production stream to distillation column as reflux irrigation, as well as throttling another part of the condensed production stream and dividing it into the liquid phase, which is the finished product, and the vapor phase, which is further directed as a return stream for cooling the direct stream, and the liquid fraction from the distillation column is expanded and, due to the condensation of the vapor fraction from the distillation column, is evaporated, then heated by direct flow, and after repeated throttling is directed into the return flow. 2. Способ частичного сжижения природного газа, включающий предварительное охлаждение прямого потока газа высокого давления, отличающийся тем, что после охлаждения прямой поток разделяют на два потока, первый из которых направляют в расширяющее устройство и далее отправляют в обратный поток, а второй охлаждают и разделяют в ректификационной колонне на жидкую фракцию и паровую фракцию, которую направляют на реконденсацию с последующим направлением части реконденсированного продукционного потока в ректификационную колонну в качестве флегмового орошения, а также дросселированием другой части реконденсированного продукционного потока и разделением ее на жидкостную фазу, являющуюся готовым продуктом, и паровую фазу, направляемую далее в качестве обратного потока для охлаждения прямого потока, а жидкую фракцию из ректификационной колонны расширяют и, за счет реконденсации паровой фракции из ректификационной колонны, испаряют, далее нагревают прямым потоком, а после повторного дросселирования направляют в обратный поток. 2. A method of partial liquefaction of natural gas, comprising pre-cooling the direct high pressure gas stream, characterized in that after cooling the direct stream is divided into two streams, the first of which is sent to an expansion device and then sent to the return stream, and the second is cooled and divided into distillation column to the liquid fraction and the vapor fraction, which is sent for condensation, followed by the direction of part of the condensed production stream to the distillation column as a fl irrigation, as well as throttling another part of the condensed production stream and separating it into the liquid phase, which is the finished product, and the vapor phase, which is further directed as a return stream to cool the direct stream, and the liquid fraction from the distillation column is expanded and, due to steam condensation fractions from the distillation column are evaporated, then heated by a direct stream, and after repeated throttling, they are sent to the return stream.
RU2013122004/06A 2013-05-14 2013-05-14 Method of partial liquefaction of natural gas (versions) RU2543255C2 (en)

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US10627158B2 (en) * 2017-03-13 2020-04-21 Baker Hughes, A Ge Company, Llc Coproduction of liquefied natural gas and electric power with refrigeration recovery

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6085546A (en) * 1998-09-18 2000-07-11 Johnston; Richard P. Method and apparatus for the partial conversion of natural gas to liquid natural gas
RU2168124C2 (en) * 1999-06-15 2001-05-27 ЗАО "Сигма-Газ" Method for liquefaction of natural gas
RU2212598C1 (en) * 2002-02-26 2003-09-20 Горбачев Станислав Прокофьевич Method and apparatus for natural gas partial liquefaction
RU2280826C2 (en) * 2004-03-31 2006-07-27 Открытое акционерное общество "Научно-производственное объединение "ГЕЛИЙМАШ" (ОАО "НПО "ГЕЛИЙМАШ") Method and plant for partial natural gas liquefaction

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Effective date: 20180920