RU2010132951A - NITROGEN SEPARATION METHOD - Google Patents

NITROGEN SEPARATION METHOD Download PDF

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Publication number
RU2010132951A
RU2010132951A RU2010132951/06A RU2010132951A RU2010132951A RU 2010132951 A RU2010132951 A RU 2010132951A RU 2010132951/06 A RU2010132951/06 A RU 2010132951/06A RU 2010132951 A RU2010132951 A RU 2010132951A RU 2010132951 A RU2010132951 A RU 2010132951A
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fraction
hydrocarbons
rich
separated
nitrogen
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RU2010132951/06A
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Russian (ru)
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RU2537110C2 (en
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Хайнц БАУЭР (DE)
Хайнц БАУЭР
Райнер ЗАППЕР (DE)
Райнер ЗАППЕР
Андреас БУБ (DE)
Андреас БУБ
Штефан БУРМБЕРГЕР (DE)
Штефан БУРМБЕРГЕР
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Линде Акциенгезелльшафт (De)
Линде Акциенгезелльшафт
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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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0204—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the feed stream
    • F25J3/0209—Natural gas or substitute 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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0233—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of CnHm with 1 carbon atom or more
    • 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
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0238—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of CnHm with 2 carbon atoms or more
    • 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
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0257—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/08—Processes or apparatus using separation by rectification in a triple pressure main column system
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/38—Processes or apparatus using separation by rectification using pre-separation or distributed distillation before a main column system, e.g. in a at least a double column system
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/74—Refluxing the column with at least a part of the partially condensed overhead 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
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/06—Splitting of the feed stream, e.g. for treating or cooling in different ways
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream

Abstract

1. Способ отделения С2+-углеводородов от содержащей, в основном, азот и углеводороды исходной фракции, при котором ! а) исходную фракцию (1, 20) частично конденсируют (Е1, Е1', Е3) и ректификаторно (Т) разделяют на обогащенную (11) и обедненную (2) С2+-углеводородами фракции; ! b) обедненную С2+-углеводородами фракцию (2) частично конденсируют (Е2) и разделяют на жидкую фракцию, образующую, по меньшей мере, частично обратный поток (3) для рефрикаторного разделения (Т), и обедненную С2+-углеводородами газовую фракцию (4); и ! c) обедненную С2+-углеводородами газовую фракцию (4) разделяют в двухколонном процессе (N) на богатую азотом (8') и богатую метаном (7'') фракции, ! отличающийся тем, что полученную на этапе b) жидкую фракцию, по меньшей мере, частично также подают (10) в двухколонный процесс (N) и разделяют в нем на богатую азотом (8') и богатую метаном (7'') фракции. ! 2. Способ по п.1, отличающийся тем, что содержащую в основном азот и углеводороды исходную фракцию разделяют на несколько частичных потоков (1, 20), которые отдельно друг от друга частично конденсируют (Е1, Е1', Е3), а затем ректификаторно разделяют (Т). ! 3. Способ по п.2, отличающийся тем, что охлаждение частичных потоков (1, 20) исходной фракции осуществляют в двухпоточных теплообменниках (Е1, Е1', Е3), преимущественно в намотанных теплообменниках (Е1, Е1'), причем охлаждение или частичную конденсацию частичных потоков (1, 20) осуществляют преимущественно в трубах, а испарение или нагрев холодных продуктов разложения (7', 8) осуществляют на боковой стороне намотанных теплообменников и/или преимущественно охлаждение или частичную конденсацию частичных потоков (1, 20) осуществляют по восходящей в трубах, а � 1. A method for separating C2+ hydrocarbons from an initial fraction containing mainly nitrogen and hydrocarbons, in which ! a) the initial fraction (1, 20) is partially condensed (E1, E1', E3) and fractionated (T) is divided into fractions enriched (11) and depleted (2) in C2+ hydrocarbons; ! b) the C2+-depleted hydrocarbon fraction (2) is partially condensed (E2) and separated into a liquid fraction forming at least partly a reverse flow (3) for refrigeration separation (T) and a C2+-depleted gas fraction (4) ; And ! c) the C2+-depleted gas fraction (4) is separated in a two-column process (N) into nitrogen-rich (8') and methane-rich (7'') fractions, ! characterized in that the liquid fraction obtained in step b) is at least partially also fed (10) to the two-column process (N) and separated therein into nitrogen-rich (8') and methane-rich (7'') fractions. ! 2. The method according to claim 1, characterized in that the initial fraction containing mainly nitrogen and hydrocarbons is divided into several partial streams (1, 20), which are partially condensed separately from each other (E1, E1', E3), and then rectified separate (T). ! 3. The method according to claim 2, characterized in that the cooling of partial flows (1, 20) of the initial fraction is carried out in two-flow heat exchangers (E1, E1', E3), mainly in wound heat exchangers (E1, E1'), and cooling or partial the partial streams (1, 20) are condensed predominantly in pipes, and the cold decomposition products (7', 8) are evaporated or heated on the side of the coiled heat exchangers and/or the partial streams (1, 20) are predominantly cooled or partially condensed in ascending order. in pipes, and �

Claims (4)

1. Способ отделения С2+-углеводородов от содержащей, в основном, азот и углеводороды исходной фракции, при котором1. The method of separation of C 2+ hydrocarbons from containing mainly nitrogen and hydrocarbons of the initial fraction, in which а) исходную фракцию (1, 20) частично конденсируют (Е1, Е1', Е3) и ректификаторно (Т) разделяют на обогащенную (11) и обедненную (2) С2+-углеводородами фракции;a) the initial fraction (1, 20) is partially condensed (E1, E1 ', E3) and fractionated (T) is separated into an enriched (11) and depleted (2) C 2+ -hydrocarbon fraction; b) обедненную С2+-углеводородами фракцию (2) частично конденсируют (Е2) и разделяют на жидкую фракцию, образующую, по меньшей мере, частично обратный поток (3) для рефрикаторного разделения (Т), и обедненную С2+-углеводородами газовую фракцию (4); иb) the C 2+ hydrocarbon depleted fraction (2) is partially condensed (E2) and separated into a liquid fraction that forms at least partially a reverse flow (3) for refractive separation (T), and a gas C 2+ hydrocarbon depleted gas fraction (4); and c) обедненную С2+-углеводородами газовую фракцию (4) разделяют в двухколонном процессе (N) на богатую азотом (8') и богатую метаном (7'') фракции,c) the gas fraction (4) depleted in C 2+ hydrocarbons is separated in a two-column process (N) into a nitrogen-rich (8 ') and methane-rich (7``) fraction, отличающийся тем, что полученную на этапе b) жидкую фракцию, по меньшей мере, частично также подают (10) в двухколонный процесс (N) и разделяют в нем на богатую азотом (8') и богатую метаном (7'') фракции.characterized in that the liquid fraction obtained in step b) is at least partially also fed (10) to the two-column process (N) and separated therein into a nitrogen-rich (8 ') and methane-rich (7' ') fraction. 2. Способ по п.1, отличающийся тем, что содержащую в основном азот и углеводороды исходную фракцию разделяют на несколько частичных потоков (1, 20), которые отдельно друг от друга частично конденсируют (Е1, Е1', Е3), а затем ректификаторно разделяют (Т).2. The method according to claim 1, characterized in that the initial fraction containing mainly nitrogen and hydrocarbons is divided into several partial streams (1, 20), which are partially condensed separately from each other (E1, E1 ', E3), and then rectified share (T). 3. Способ по п.2, отличающийся тем, что охлаждение частичных потоков (1, 20) исходной фракции осуществляют в двухпоточных теплообменниках (Е1, Е1', Е3), преимущественно в намотанных теплообменниках (Е1, Е1'), причем охлаждение или частичную конденсацию частичных потоков (1, 20) осуществляют преимущественно в трубах, а испарение или нагрев холодных продуктов разложения (7', 8) осуществляют на боковой стороне намотанных теплообменников и/или преимущественно охлаждение или частичную конденсацию частичных потоков (1, 20) осуществляют по восходящей в трубах, а нагрев или испарение продуктов разложения (7', 8) - по нисходящей на боковой стороне.3. The method according to claim 2, characterized in that the cooling of the partial flows (1, 20) of the initial fraction is carried out in double-flow heat exchangers (E1, E1 ', E3), mainly in wound heat exchangers (E1, E1'), moreover, cooling or partial the condensation of partial flows (1, 20) is carried out mainly in pipes, and the evaporation or heating of cold decomposition products (7 ', 8) is carried out on the side of the wound heat exchangers and / or mainly the cooling or partial condensation of partial flows (1, 20) is carried out in ascending order in the pipes and heating or evaporation of decomposition products (7 ', 8) - downward on the side. 4. Способ по п.2 или 3, отличающийся тем, что, по меньшей мере, один из частичных потоков (1, 20) исходной фракции разделяют (D') на газовую (22) и жидкую (21) фракции, которые отдельно друг от друга подают на ректификаторное разделение (Т). 4. The method according to claim 2 or 3, characterized in that at least one of the partial flows (1, 20) of the initial fraction is separated (D ') into gas (22) and liquid (21) fractions, which are separately from a friend serves on rectification separation (T).
RU2010132951/06A 2009-08-06 2010-08-05 Method of separating nitrogen RU2537110C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009036366.1 2009-08-06
DE102009036366A DE102009036366A1 (en) 2009-08-06 2009-08-06 Process for separating nitrogen

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RU2010132951A true RU2010132951A (en) 2012-02-10
RU2537110C2 RU2537110C2 (en) 2014-12-27

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US (1) US20110041551A1 (en)
AU (1) AU2010202696B2 (en)
DE (1) DE102009036366A1 (en)
MX (1) MX337989B (en)
NO (1) NO20101115A1 (en)
RU (1) RU2537110C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11604024B2 (en) 2017-12-21 2023-03-14 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Method for producing pure nitrogen from a natural gas stream containing nitrogen

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015001858A1 (en) * 2015-02-12 2016-08-18 Linde Aktiengesellschaft Combined separation of heavy and light ends from natural gas

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US4455158A (en) * 1983-03-21 1984-06-19 Air Products And Chemicals, Inc. Nitrogen rejection process incorporating a serpentine heat exchanger
US4519824A (en) * 1983-11-07 1985-05-28 The Randall Corporation Hydrocarbon gas separation
US4664686A (en) 1986-02-07 1987-05-12 Union Carbide Corporation Process to separate nitrogen and methane
US4710212A (en) * 1986-09-24 1987-12-01 Union Carbide Corporation Process to produce high pressure methane gas
US5183101A (en) * 1991-05-21 1993-02-02 Bio-Rad Laboratories, Inc. Circulating chiller for electrified solutions
GB2298034B (en) * 1995-02-10 1998-06-24 Air Prod & Chem Dual column process to remove nitrogen from natural gas
DE102009008229A1 (en) 2009-02-10 2010-08-12 Linde Ag Process for separating nitrogen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11604024B2 (en) 2017-12-21 2023-03-14 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Method for producing pure nitrogen from a natural gas stream containing nitrogen

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RU2537110C2 (en) 2014-12-27
DE102009036366A1 (en) 2011-02-10
AU2010202696B2 (en) 2016-02-25
NO20101115A1 (en) 2011-02-07
MX337989B (en) 2016-03-30
AU2010202696A1 (en) 2011-01-20
US20110041551A1 (en) 2011-02-24
MX2010007252A (en) 2011-02-07

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