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RU2011122689A - METHOD FOR REMOVING NITROGEN - Google Patents

METHOD FOR REMOVING NITROGEN Download PDF

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RU2011122689A
RU2011122689A RU2011122689/06A RU2011122689A RU2011122689A RU 2011122689 A RU2011122689 A RU 2011122689A RU 2011122689/06 A RU2011122689/06 A RU 2011122689/06A RU 2011122689 A RU2011122689 A RU 2011122689A RU 2011122689 A RU2011122689 A RU 2011122689A
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fraction
pressure
high nitrogen
compressed
nitrogen content
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RU2011122689/06A
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Russian (ru)
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RU2514804C2 (en
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Хайнц БАУЭР
Мартин ГВИННЕР
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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
    • F25J3/0257—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
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • 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
    • F25J2200/72—Refluxing the column with at least a part of the totally 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/76—Refluxing the column with condensed overhead gas being cycled in a quasi-closed loop refrigeration 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/78—Refluxing the column with a liquid stream originating from an upstream or downstream fractionator column
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/04—Recovery of liquid products
    • 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/60—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being (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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/02—Bath type boiler-condenser using thermo-siphon effect, e.g. with natural or forced circulation or pool boiling, i.e. core-in-kettle heat exchanger
    • 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
    • F25J2270/02—Internal refrigeration with liquid vaporising 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
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/04—Internal refrigeration with work-producing gas expansion 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
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/42—Quasi-closed internal or closed external nitrogen refrigeration 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
    • F25J2280/00—Control of the process or apparatus
    • F25J2280/02—Control in general, load changes, different modes ("runs"), measurements

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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)

Abstract

1. Способ удаления фракции с высоким содержанием азота из исходной фракции, содержащей в основном азот и углеводороды, где исходную фракцию разделяют методом ректификации на фракцию с высоким содержанием азота и фракцию с высоким содержанием метана, и при этом фракцию с высоким содержанием метана с целью получения холода выпаривают и перегревают при возможно наибольшем давлении по отношению к подлежащей охлаждению исходной фракции, и фракцию с высоким содержанием азота, по меньшей мере, временно и/или, по меньшей мере, частично сжимают и подают на ректификацию в виде возвратного потока, отличающийся тем, что, по меньшей мере, временно, по меньшей мере, один частичный поток (16) сжатой (C) фракции (9') с высоким содержанием азота после осуществленной конденсации (E1) расширяют (f) и с целью получения холода, по меньшей мере, частично, предпочтительно полностью выпаривают (E1).2. Способ по п.1, отличающийся тем, что фракцию (9) с высоким содержанием азота сжимают (C) до давления от 20 до 80 бар и после осуществленной конденсации (E1) расширяют (f) до давления от 1 до 5 бар.3. Способ по п.1 или 2, отличающийся тем, что, по меньшей мере, временно, по меньшей мере, один частичный поток (15) сжатой (C) фракции (9') с высоким содержанием азота после осуществленного охлаждения (E1) расширяют (X), вырабатывая холод, предпочтительно до давления от 1 до 20 бар и с целью получения холода при необходимости выпаривают и нагревают (E1).4. Способ по п.1 или 2, отличающийся тем, что еще не полностью выпаренную фракцию (5') с высоким содержанием метана подводят к циркуляционной емкости (D), образующуюся исключительно в циркуляционной емкости (D) жидкую долю фракции (5') с высоки�1. A method for removing a high nitrogen fraction from an initial fraction containing mainly nitrogen and hydrocarbons, where the initial fraction is separated by rectification into a high nitrogen fraction and a high methane fraction, and the high methane fraction to obtain the cold is evaporated and overheated at the highest possible pressure with respect to the starting fraction to be cooled, and the fraction with a high nitrogen content is at least temporarily and / or at least partially compressed and fed to rectification in the form of a return stream, characterized in that at least temporarily, at least one partial stream (16) of compressed (C) fraction (9 ') with a high nitrogen content after the condensation (E1) is carried out is expanded ( f) and in order to obtain a cold, at least partially, preferably completely (E1) is evaporated. 2. The method according to claim 1, characterized in that the fraction (9) with a high nitrogen content is compressed (C) to a pressure of 20 to 80 bar and, after the condensation has been carried out (E1), expanded (f) to a pressure of 1 to 5 bar. A method according to claim 1 or 2, characterized in that at least temporarily at least one partial stream (15) of compressed (C) fraction (9 ') with a high nitrogen content is expanded after cooling (E1) ( X), producing cold, preferably up to a pressure of 1 to 20 bar, and in order to obtain cold, if necessary, evaporate and heat (E1). 4. The method according to claim 1 or 2, characterized in that the still not completely evaporated fraction (5 ') with a high methane content is fed to the circulation tank (D), which is formed exclusively in the circulation tank (D), the liquid fraction of the fraction (5') with a high �

Claims (7)

1. Способ удаления фракции с высоким содержанием азота из исходной фракции, содержащей в основном азот и углеводороды, где исходную фракцию разделяют методом ректификации на фракцию с высоким содержанием азота и фракцию с высоким содержанием метана, и при этом фракцию с высоким содержанием метана с целью получения холода выпаривают и перегревают при возможно наибольшем давлении по отношению к подлежащей охлаждению исходной фракции, и фракцию с высоким содержанием азота, по меньшей мере, временно и/или, по меньшей мере, частично сжимают и подают на ректификацию в виде возвратного потока, отличающийся тем, что, по меньшей мере, временно, по меньшей мере, один частичный поток (16) сжатой (C) фракции (9') с высоким содержанием азота после осуществленной конденсации (E1) расширяют (f) и с целью получения холода, по меньшей мере, частично, предпочтительно полностью выпаривают (E1).1. A method for removing a high nitrogen fraction from an initial fraction containing mainly nitrogen and hydrocarbons, where the initial fraction is separated by rectification into a high nitrogen fraction and a high methane fraction, and the high methane fraction to obtain the cold is evaporated and overheated at the highest possible pressure with respect to the starting fraction to be cooled, and the fraction with a high nitrogen content is at least temporarily and / or at least partially compressed and fed to rectification in the form of a return stream, characterized in that at least temporarily, at least one partial stream (16) of compressed (C) fraction (9 ') with a high nitrogen content after the condensation (E1) is carried out is expanded ( f) and in order to obtain a cold, at least partially, preferably completely, is evaporated (E1). 2. Способ по п.1, отличающийся тем, что фракцию (9) с высоким содержанием азота сжимают (C) до давления от 20 до 80 бар и после осуществленной конденсации (E1) расширяют (f) до давления от 1 до 5 бар.2. The method according to claim 1, characterized in that the fraction (9) with a high nitrogen content is compressed (C) to a pressure of 20 to 80 bar and, after the condensation (E1) has been carried out, expanded (f) to a pressure of 1 to 5 bar. 3. Способ по п.1 или 2, отличающийся тем, что, по меньшей мере, временно, по меньшей мере, один частичный поток (15) сжатой (C) фракции (9') с высоким содержанием азота после осуществленного охлаждения (E1) расширяют (X), вырабатывая холод, предпочтительно до давления от 1 до 20 бар и с целью получения холода при необходимости выпаривают и нагревают (E1).3. The method according to claim 1 or 2, characterized in that at least temporarily at least one partial stream (15) of compressed (C) fraction (9 ') with a high nitrogen content after cooling (E1) expand (X), producing cold, preferably up to a pressure of 1 to 20 bar, and in order to obtain cold, if necessary, evaporate and heat (E1). 4. Способ по п.1 или 2, отличающийся тем, что еще не полностью выпаренную фракцию (5') с высоким содержанием метана подводят к циркуляционной емкости (D), образующуюся исключительно в циркуляционной емкости (D) жидкую долю фракции (5') с высоким содержанием метана частично выпаривают (E1) и снова подводят к циркуляционной емкости (D), и полностью выпаренный головной продукт (7) циркуляционной емкости (D) перегревают (E1).4. The method according to claim 1 or 2, characterized in that the still not completely evaporated fraction (5 ') with a high methane content is fed to the circulation tank (D), which is formed exclusively in the circulation tank (D), the liquid fraction of the fraction (5') with a high methane content, partially evaporated (E1) and again brought to the circulation tank (D), and the completely evaporated head product (7) of the circulation tank (D) is overheated (E1). 5. Способ п.1 или 2, отличающийся тем, что содержание метана в полученной методом ректификации (T1/T2) фракции (4-4'') с высоким содержанием азота составляет менее 1 об.%.5. The method of claim 1 or 2, characterized in that the methane content in the fraction obtained by distillation (T1 / T2) (4-4``) with a high nitrogen content is less than 1 vol.%. 6. Способ по п.1 или 2, отличающийся тем, что содержание азота в полученной методом ректификации (T1/T2) фракции (5) с высоким содержанием метана составляет менее 5 об.%.6. The method according to claim 1 or 2, characterized in that the nitrogen content in the fraction obtained by distillation (T1 / T2) fraction (5) with a high methane content is less than 5 vol.%. 7. Способ по п.1 или 2, при котором проводят разделение методом ректификации исходной фракции в двух колоннах, состоящих из колонны предварительного разделения и низконапорной колонны, отличающийся тем, что в верхней области колонны (T1) для предварительного разделения, предпочтительно выше верхней тарелки колонны (T1) для предварительного разделения, отводят фракцию (8) с высоким содержанием гелия и расширяют (c) в низконапорной колонне (T2), предпочтительно в головной части низконапорной колонны (T2). 7. The method according to claim 1 or 2, in which the separation is carried out by rectification of the initial fraction in two columns consisting of a preliminary separation column and a low-pressure column, characterized in that in the upper region of the column (T1) for preliminary separation, preferably above the upper plate columns for pre-separation (T1), a high helium fraction (8) is withdrawn and expanded (c) in a low-pressure column (T2), preferably in the head of the low-pressure column (T2).
RU2011122689/06A 2008-11-06 2009-11-03 Method of nitrogen removal RU2514804C2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008056196.7 2008-11-06
DE102008056196A DE102008056196A1 (en) 2008-11-06 2008-11-06 Process for separating nitrogen
PCT/EP2009/007879 WO2010051971A2 (en) 2008-11-06 2009-11-03 Method for removing nitrogen

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RU2011122689A true RU2011122689A (en) 2012-12-20
RU2514804C2 RU2514804C2 (en) 2014-05-10

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US (1) US20110209498A1 (en)
EP (1) EP2347206B1 (en)
AU (1) AU2009313087B2 (en)
DE (1) DE102008056196A1 (en)
MX (1) MX2011004358A (en)
PL (1) PL2347206T3 (en)
RU (1) RU2514804C2 (en)
WO (1) WO2010051971A2 (en)

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US20230076428A1 (en) * 2021-09-02 2023-03-09 Air Products And Chemicals, Inc. Integrated nitrogen rejection for liquefaction of natural gas

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