FR2418770A1 - Treatment of purge gas from ammonia synthesis - to recover and recycle hydrogen - Google Patents

Treatment of purge gas from ammonia synthesis - to recover and recycle hydrogen

Info

Publication number
FR2418770A1
FR2418770A1 FR7806084A FR7806084A FR2418770A1 FR 2418770 A1 FR2418770 A1 FR 2418770A1 FR 7806084 A FR7806084 A FR 7806084A FR 7806084 A FR7806084 A FR 7806084A FR 2418770 A1 FR2418770 A1 FR 2418770A1
Authority
FR
France
Prior art keywords
fraction
purge gas
ammonia
liq
treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7806084A
Other languages
French (fr)
Other versions
FR2418770B1 (en
Inventor
Gerard Vandenbussche
Albert Halfon
Herve Le Bihan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
Original Assignee
Air Liquide SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA filed Critical Air Liquide SA
Priority to FR7806084A priority Critical patent/FR2418770A1/en
Priority to IN123/DEL/79A priority patent/IN151149B/en
Priority to IT20434/79A priority patent/IT1112017B/en
Publication of FR2418770A1 publication Critical patent/FR2418770A1/en
Application granted granted Critical
Publication of FR2418770B1 publication Critical patent/FR2418770B1/fr
Granted legal-status Critical Current

Links

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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
    • F25J3/0605—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the feed stream
    • F25J3/062—Refinery gas, cracking gas, coke oven gas, gaseous mixtures containing aliphatic unsaturated CnHm or gaseous mixtures of undefined nature
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/025—Preparation or purification of gas mixtures for ammonia synthesis
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/506—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification at low temperatures
    • 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
    • F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
    • F25J3/063—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream
    • F25J3/068—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream separation of H2/N2 mixtures, i.e. of ammonia synthesis gas
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/048—Composition of the impurity the impurity being an organic compound
    • 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
    • F25J2210/20—H2/N2 mixture, i.e. synthesis gas for or purge gas from ammonia synthesis
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The treatment of a purge gas from an ammonia synthesis plant, contg. a large proportion of hydrogen and nitrogen and non-negligible amts. of argon, methane, ammonia and helium, involves a preliminary extn. of ammonia. The gas is then fractionated by partial condensn. in an exchanger, with formation at the cold end of a H2-enriched vapour fraction and a liq. fraction enriched in argon and methane. At least a large part of the H2-enriched gaseous fraction is recycled into the synthesis cycle. The liq. fraction is expanded to a vaporisation pressure by heat exchange at counter-current with the purge gas during cooling. The vaporised liq. fraction is, during the heat exchange, expanded to a second low pressure in an expansion turbine with external work, before being reheated by thermal exchange at counter-current with the purge gas.
FR7806084A 1978-03-03 1978-03-03 Treatment of purge gas from ammonia synthesis - to recover and recycle hydrogen Granted FR2418770A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7806084A FR2418770A1 (en) 1978-03-03 1978-03-03 Treatment of purge gas from ammonia synthesis - to recover and recycle hydrogen
IN123/DEL/79A IN151149B (en) 1978-03-03 1979-02-20
IT20434/79A IT1112017B (en) 1978-03-03 1979-02-22 PURGE GAS TREATMENT PROCESS OF A SUMMARY PLANT FOR AMMONIACS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7806084A FR2418770A1 (en) 1978-03-03 1978-03-03 Treatment of purge gas from ammonia synthesis - to recover and recycle hydrogen

Publications (2)

Publication Number Publication Date
FR2418770A1 true FR2418770A1 (en) 1979-09-28
FR2418770B1 FR2418770B1 (en) 1981-10-02

Family

ID=9205290

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806084A Granted FR2418770A1 (en) 1978-03-03 1978-03-03 Treatment of purge gas from ammonia synthesis - to recover and recycle hydrogen

Country Status (3)

Country Link
FR (1) FR2418770A1 (en)
IN (1) IN151149B (en)
IT (1) IT1112017B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119001A2 (en) * 1983-02-14 1984-09-19 Exxon Research And Engineering Company Improved cryogenic production of ammonia synthesis gas
WO1986000286A1 (en) * 1984-06-30 1986-01-16 Stamicarbon B.V. (Licensing Subsidiary Of Dsm) Process for preparing ammonia
WO1992012927A1 (en) * 1991-01-23 1992-08-06 Norsk Hydro A.S Method for purification of synthesis gas

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1457243A (en) * 1964-12-17 1966-10-28 Petrocarbon Dev Ltd Recovery of hydrogen from a mixture of gases

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1457243A (en) * 1964-12-17 1966-10-28 Petrocarbon Dev Ltd Recovery of hydrogen from a mixture of gases

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV488/69 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119001A2 (en) * 1983-02-14 1984-09-19 Exxon Research And Engineering Company Improved cryogenic production of ammonia synthesis gas
EP0119001A3 (en) * 1983-02-14 1987-04-08 Exxon Research And Engineering Company Improved cryogenic production of ammonia synthesis gas
WO1986000286A1 (en) * 1984-06-30 1986-01-16 Stamicarbon B.V. (Licensing Subsidiary Of Dsm) Process for preparing ammonia
WO1992012927A1 (en) * 1991-01-23 1992-08-06 Norsk Hydro A.S Method for purification of synthesis gas

Also Published As

Publication number Publication date
FR2418770B1 (en) 1981-10-02
IT7920434A0 (en) 1979-02-22
IT1112017B (en) 1986-01-13
IN151149B (en) 1983-02-26

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