AU509078B2

AU509078B2 – Pressure-swing adsorption recovery of hydrogen and nitrogen from ammonia plant gas
– Google Patents

AU509078B2 – Pressure-swing adsorption recovery of hydrogen and nitrogen from ammonia plant gas
– Google Patents
Pressure-swing adsorption recovery of hydrogen and nitrogen from ammonia plant gas

Info

Publication number
AU509078B2

AU509078B2
AU29861/77A
AU2986177A
AU509078B2
AU 509078 B2
AU509078 B2
AU 509078B2
AU 29861/77 A
AU29861/77 A
AU 29861/77A
AU 2986177 A
AU2986177 A
AU 2986177A
AU 509078 B2
AU509078 B2
AU 509078B2
Authority
AU
Australia
Prior art keywords
nitrogen
hydrogen
pressure
swing adsorption
ammonia plant
Prior art date
1976-10-20
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.)

Expired

Application number
AU29861/77A
Other versions

AU2986177A
(en

Inventor
K. J Doshi
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.)

Union Carbide Corp

Original Assignee
Union Carbide Corp
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.)
1976-10-20
Filing date
1977-10-19
Publication date
1980-04-17

1977-10-19
Application filed by Union Carbide Corp
filed
Critical
Union Carbide Corp

1979-04-26
Publication of AU2986177A
publication
Critical
patent/AU2986177A/en

1980-04-17
Application granted
granted
Critical

1980-04-17
Publication of AU509078B2
publication
Critical
patent/AU509078B2/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

C—CHEMISTRY; METALLURGY

C01—INORGANIC CHEMISTRY

C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF

C01C1/00—Ammonia; Compounds thereof

C01C1/02—Preparation, purification or separation of ammonia

C01C1/04—Preparation of ammonia by synthesis in the gas phase

C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst

C01C1/0458—Separation of NH3

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols

B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography

B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents

B01D53/047—Pressure swing adsorption

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2253/00—Adsorbents used in seperation treatment of gases and vapours

B01D2253/10—Inorganic adsorbents

B01D2253/102—Carbon

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2256/00—Main component in the product gas stream after treatment

B01D2256/10—Nitrogen

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2256/00—Main component in the product gas stream after treatment

B01D2256/16—Hydrogen

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2257/00—Components to be removed

B01D2257/10—Single element gases other than halogens

B01D2257/102—Nitrogen

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2257/00—Components to be removed

B01D2257/10—Single element gases other than halogens

B01D2257/11—Noble gases

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2257/00—Components to be removed

B01D2257/40—Nitrogen compounds

B01D2257/406—Ammonia

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2257/00—Components to be removed

B01D2257/70—Organic compounds not provided for in groups B01D2257/00 – B01D2257/602

B01D2257/702—Hydrocarbons

B01D2257/7022—Aliphatic hydrocarbons

B01D2257/7025—Methane

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2259/00—Type of treatment

B01D2259/40—Further details for adsorption processes and devices

B01D2259/40001—Methods relating to additional, e.g. intermediate, treatment of process gas

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2259/00—Type of treatment

B01D2259/40—Further details for adsorption processes and devices

B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption

B01D2259/40028—Depressurization

B01D2259/4003—Depressurization with two sub-steps

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2259/00—Type of treatment

B01D2259/40—Further details for adsorption processes and devices

B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption

B01D2259/40035—Equalization

B01D2259/40041—Equalization with more than three sub-steps

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2259/00—Type of treatment

B01D2259/40—Further details for adsorption processes and devices

B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption

B01D2259/40043—Purging

B01D2259/4005—Nature of purge gas

B01D2259/40052—Recycled product or process gas

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2259/00—Type of treatment

B01D2259/40—Further details for adsorption processes and devices

B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption

B01D2259/40058—Number of sequence steps, including sub-steps, per cycle

B01D2259/40071—Nine

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2259/00—Type of treatment

B01D2259/40—Further details for adsorption processes and devices

B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption

B01D2259/40077—Direction of flow

B01D2259/40081—Counter-current

B—PERFORMING OPERATIONS; TRANSPORTING

B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

B01D—SEPARATION

B01D2259/00—Type of treatment

B01D2259/40—Further details for adsorption processes and devices

B01D2259/404—Further details for adsorption processes and devices using four beds

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE

Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]

Y02C20/00—Capture or disposal of greenhouse gases

Y02C20/20—Capture or disposal of greenhouse gases of methane

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE

Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P20/00—Technologies relating to chemical industry

Y02P20/10—Process efficiency

Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE

Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P20/00—Technologies relating to chemical industry

Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Y02P20/156—Methane [CH4]

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE

Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P20/00—Technologies relating to chemical industry

Y02P20/50—Improvements relating to the production of bulk chemicals

Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

AU29861/77A
1976-10-20
1977-10-19
Pressure-swing adsorption recovery of hydrogen and nitrogen from ammonia plant gas

Expired

AU509078B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

USUS734372

1976-10-20

US05/734,372

US4077780A
(en)

1976-10-20
1976-10-20
Recovery of hydrogen and nitrogen from ammonia plant purge gas

Publications (2)

Publication Number
Publication Date

AU2986177A

AU2986177A
(en)

1979-04-26

AU509078B2
true

AU509078B2
(en)

1980-04-17

Family
ID=24951424
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU29861/77A
Expired

AU509078B2
(en)

1976-10-20
1977-10-19
Pressure-swing adsorption recovery of hydrogen and nitrogen from ammonia plant gas

Country Status (9)

Country
Link

US
(1)

US4077780A
(en)

AU
(1)

AU509078B2
(en)

BE
(1)

BE859917A
(en)

CA
(1)

CA1087373A
(en)

FR
(1)

FR2368436A1
(en)

GB
(1)

GB1579549A
(en)

IN
(1)

IN153376B
(en)

MX
(1)

MX148965A
(en)

ZA
(1)

ZA776239B
(en)

Families Citing this family (62)

* Cited by examiner, † Cited by third party

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Priority date
Publication date
Assignee
Title

US4375363A
(en)

*

1978-12-05
1983-03-01
Union Carbide Corporation
Selective adsorption process for production of ammonia synthesis gas mixtures

US4475929A
(en)

*

1978-12-05
1984-10-09
Union Carbide Corporation
Selective adsorption process

ES8300304A1
(en)

*

1980-12-09
1982-11-01
Linde Ag
Adsorption process and installation for carrying out the process.

IL63630A
(en)

*

1981-08-21
1985-01-31
Ram Lavie
Process for the manufacture of ammonia

US4376640A
(en)

*

1981-12-10
1983-03-15
Calgon Corporation
Repressurization of pressure swing adsorption system

DE3205451A1
(en)

*

1982-02-16
1983-08-25
Linde Ag, 6200 Wiesbaden

METHOD FOR OPERATING A CYCLICALLY OPERATING PRESSURE CHANGE ADSORPITION SYSTEM

US4421531A
(en)

*

1982-09-13
1983-12-20
Air Products And Chemicals, Inc.
Adiabatic pressure swing absorption process for removing low concentrations of oxygen from mixed gas streams

US4421530A
(en)

*

1982-09-13
1983-12-20
Air Products And Chemicals, Inc.
Process for removing oxygen from mixed gas streams using a swing adiabatic absorption-isothermal desorption cycle

US4461630A
(en)

*

1982-09-30
1984-07-24
Union Carbide Corporation
Product recovery in pressure swing adsorption process and system

FR2534827A1
(en)

*

1982-10-22
1984-04-27
Air Liquide

METHOD FOR TREATING ADSORPTION GAS WITH MULTIPLE ADSORBERS IN A SIMULTANEOUS PRODUCTION PHASE

US4512780A
(en)

*

1983-11-08
1985-04-23
Union Carbide Corporation
Pressure swing adsorption with intermediate product recovery

US4726816A
(en)

*

1983-11-08
1988-02-23
Union Carbide Corporation
Reformer-pressure swing adsorption process for the production of carbon monoxide

US4624841A
(en)

*

1984-01-23
1986-11-25
Toyo Engineering Corporation
Process for refining an ammonia synthesis gas

US4592860A
(en)

*

1984-02-07
1986-06-03
Union Carbide Corporation
Process and apparatus for ammonia synthesis gas production

US4755361A
(en)

*

1984-02-07
1988-07-05
Union Carbide Corporation
Apparatus for ammonia synthesis gas production

US4589888A
(en)

*

1984-10-05
1986-05-20
Union Carbide Corporation
Pressure swing adsorption process

US4650501A
(en)

*

1984-10-05
1987-03-17
Union Carbide Corporation
Pressure swing adsorption process

US4645516A
(en)

*

1985-05-24
1987-02-24
Union Carbide Corporation
Enhanced gas separation process

US4816039A
(en)

*

1986-02-24
1989-03-28
The Boc Group, Inc.
PSA multicomponent separation utilizing tank equalization

US4689062A
(en)

*

1986-02-24
1987-08-25
The Boc Group, Inc.
Argon recovery from ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means

US4842621A
(en)

*

1987-03-26
1989-06-27
The Dow Chemical Company
Recovery process

JPH0779940B2
(en)

*

1987-09-16
1995-08-30
日本酸素株式会社

Adsorption separation method

US5174796A
(en)

*

1991-10-09
1992-12-29
Uop
Process for the purification of natural gas

FR2682612B1
(en)

*

1991-10-17
1993-12-03
Air Liquide

PROCESS FOR PRODUCING A GAS WITH A SUBSTANTIAL OXYGEN CONTENT.

US5232473A
(en)

*

1992-05-07
1993-08-03
The Boc Group, Inc.
Pressure swing adsorption with countercurrent feed pressurization

CA2102774C
(en)

*

1992-11-16
1999-02-16
Ravi Kumar
Adsorption process with mixed repressurization and purge/equalization

US5330561A
(en)

*

1992-11-16
1994-07-19
Air Products And Chemicals, Inc.
Extended vacuum swing adsorption process

CA2102775C
(en)

*

1992-11-16
1999-01-19
Ravi Kumar
Extended vacuum swing adsorption process

US5433770A
(en)

*

1993-12-27
1995-07-18
Uop
PSA process employing a rapid depressurization step to create a disequilibrium effect

US5540758A
(en)

*

1994-02-03
1996-07-30
Air Products And Chemicals, Inc.
VSA adsorption process with feed/vacuum advance and provide purge

FR2718056B1
(en)

*

1994-03-30
1996-05-03
Air Liquide

Method for producing a gas by adsorption.

US5985003A
(en)

*

1994-06-02
1999-11-16
Nippon Sanso Corporation
Oxygen production process by pressure swing adsorption separation

US5536299A
(en)

*

1994-09-01
1996-07-16
Praxair Technology, Inc.
Simultaneous step pressure swing adsorption process

US5792239A
(en)

*

1994-10-21
1998-08-11
Nitrotec Corporation
Separation of gases by pressure swing adsorption

US5707425A
(en)

*

1994-10-21
1998-01-13
Nitrotec Corporation
Helium recovery from higher helium content streams

US5542966A
(en)

*

1994-10-21
1996-08-06
Nitrotec Corporation
Helium recovery

US5632803A
(en)

*

1994-10-21
1997-05-27
Nitrotec Corporation
Enhanced helium recovery

US5656065A
(en)

*

1995-10-04
1997-08-12
Air Products And Chemicals, Inc.
Multibed pressure swing adsorption apparatus and method for the operation thereof

FR2751244B1
(en)

*

1996-07-18
1998-09-04
Air Liquide

METHOD AND PLANT FOR TREATING A GAS MIXTURE BY PRESSURE VARIATION ADSORPTION

US5906673A
(en)

*

1997-05-15
1999-05-25
Nitrotec Corporation
Pressure swing system with auxiliary adsorbent bed

FR2769851B1
(en)

*

1997-10-21
1999-12-17
Air Liquide

INSTALLATION FOR SEPARATING A GAS MIXTURE

US6027549A
(en)

*

1998-04-28
2000-02-22
Air Products And Chemicals, Inc.
Adjusted density carbon for hydrogen PSA

US5997612A
(en)

*

1998-07-24
1999-12-07
The Boc Group, Inc.
Pressure swing adsorption process and apparatus

US6080226A
(en)

*

1998-09-30
2000-06-27
Uop Llc
Nitrous oxide purification by pressure swing adsorption

US6261343B1
(en)

*

1999-03-02
2001-07-17
Air Products And Chemicals, Inc.
Use of activated carbon adsorbent in argon and/or oxygen controlling hydrogen PSA

FR2836060B1
(en)

*

2002-02-15
2004-11-19
Air Liquide

METHOD AND UNIT FOR PRODUCTION OF HYDROGEN FROM A HYDROGEN-RICH LOAD GAS

US6660064B2
(en)

2002-03-08
2003-12-09
Air Products And Chemicals, Inc.
Activated carbon as sole absorbent in rapid cycle hydrogen PSA

EP1344561B1
(en)

2002-03-16
2007-02-14
Haldor Topsoe A/S
Ammonia recovery from purge gas

US6709486B2
(en)

*

2002-04-08
2004-03-23
Air Products And Chemicals, Inc.
Pressure swing adsorption process with controlled internal depressurization flow

US6641645B1
(en)

2002-06-13
2003-11-04
Air Products And Chemicals, Inc.
Vacuum swing adsorption process with controlled waste gas withdrawal

DE102006014278B3
(en)

*

2006-03-28
2007-06-14
Basf Ag
Total oxygen content and total carbon content determining method for light emitting diode manufacturing areas, involves determining total oxygen content from water content and total carbon content from methane content

US8591634B2
(en)

2010-01-28
2013-11-26
Air Products And Chemicals, Inc.
Method and equipment for selectively collecting process effluent

JP5537208B2
(en)

*

2010-03-24
2014-07-02
大阪瓦斯株式会社

Flammable gas concentration method

WO2014099612A1
(en)

*

2012-12-18
2014-06-26
Invista Technologies S.A R.L.
Process for producing hydrogen cyanide and recovering hydrogen

CN105828912B
(en)

*

2013-12-20
2019-12-06
皇家飞利浦有限公司
oxygen separator with rapid diagnostics

EP3059210A1
(en)

*

2015-02-20
2016-08-24
Casale SA
Process for the ammonia production

US10024595B2
(en)

2016-09-21
2018-07-17
Praxair Technology, Inc.
System and method for cryogenic purification of a feed stream comprising hydrogen, methane, nitrogen and argon

US10295251B2
(en)

2016-09-21
2019-05-21
Praxair Technology, Inc.
System and method for cryogenic purification of a feed stream comprising hydrogen, methane, nitrogen and argon

US10088229B2
(en)

2016-09-21
2018-10-02
Praxair Technology, Inc.
System and method for cryogenic purification of a feed stream comprising hydrogen, methane, nitrogen and argon

JP6692315B2
(en)

*

2017-03-16
2020-05-13
大阪瓦斯株式会社

Pressure fluctuation adsorption hydrogen production equipment

WO2019052824A1
(en)

*

2017-09-13
2019-03-21
Haldor Topsøe A/S
A process for ammonia production

WO2022265651A1
(en)

*

2021-06-18
2022-12-22
Air Products And Chemicals, Inc.
Ammonia cracking for green hydrogen

Family Cites Families (6)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3343916A
(en)

*

1965-02-19
1967-09-26
Exxon Research Engineering Co
Cyclic gas separation process and system

US3430418A
(en)

*

1967-08-09
1969-03-04
Union Carbide Corp
Selective adsorption process

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(en)

*

1968-12-30
1971-02-23
Union Carbide Corp
Selective adsorption process

FR2070387A5
(en)

*

1969-12-03
1971-09-10
Air Liquide

FR2097633A5
(en)

*

1970-07-16
1972-03-03
Air Liquide

US3636679A
(en)

*

1971-01-04
1972-01-25
Union Carbide Corp
Selective adsorption gas separation process

1976

1976-10-20
US
US05/734,372
patent/US4077780A/en
not_active
Expired – Lifetime

1977

1977-10-11
CA
CA288,671A
patent/CA1087373A/en
not_active
Expired

1977-10-19
BE
BE181899A
patent/BE859917A/en
not_active
IP Right Cessation

1977-10-19
MX
MX171016A
patent/MX148965A/en
unknown

1977-10-19
AU
AU29861/77A
patent/AU509078B2/en
not_active
Expired

1977-10-19
FR
FR7731486A
patent/FR2368436A1/en
active
Pending

1977-10-19
ZA
ZA00776239A
patent/ZA776239B/en
unknown

1977-10-19
GB
GB43462/77A
patent/GB1579549A/en
not_active
Expired

1979

1979-11-29
IN
IN862/DEL/79A
patent/IN153376B/en
unknown

Also Published As

Publication number
Publication date

BE859917A
(en)

1978-04-19

FR2368436A1
(en)

1978-05-19

CA1087373A
(en)

1980-10-14

ZA776239B
(en)

1978-07-26

IN153376B
(en)

1984-07-14

US4077780A
(en)

1978-03-07

GB1579549A
(en)

1980-11-19

MX148965A
(en)

1983-08-01

AU2986177A
(en)

1979-04-26

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(en)

1982-05-14

Manufacture of gas containing hydrogen and nitrogen

DE3364157D1
(en)

1986-07-24

Process for the recovery of rare gases having small atomic diameters, especially helium from gas mixtures containing oxygen and/or nitrogen

JPS5360891A
(en)

1978-05-31

Manufacture of hydrogen enriched gas

GB2030973B
(en)

1982-10-27

Treatment of ammonia synthesis purge gas

IT1090035B
(en)

1985-06-18

PROCEDURE FOR THE RECOVERY OF PURE AMMONIA FROM GASEOUS MIXTURES CONTAINING AMMONIA AND CARBON DIOXIDE

BG31508A3
(en)

1982-01-15

Equipmement for converting in gaseous state of liquefied natural gas

GB2048448B
(en)

1983-02-16

Recovery of hydrogen from ammonia synthesis purge gas

GB2050326B
(en)

1983-03-02

Recovery of hydrogen and ammonia from purge gas

GB1551344A
(en)

1979-08-30

Method for removal of gaseous sulphur and nitrogen compounds from gas streams

ZA837823B
(en)

1985-06-26

Gaseous decarburizing mixtures of hydrogen,carbon dioxide and a carrier gas

JPS52114565A
(en)

1977-09-26

Method of deodorizing gases containing ammonia and hydrogen sulfide

DE3070891D1
(en)

1985-08-22

Method and apparatus for manufacturing ammonia synthesis gas from a stream of gas rich in hydrogen and a stream of nitrogen

DE3060952D1
(en)

1982-11-25

Method and apparatus for manufacturing ammonia synthesis gas from a stream of gas rich in hydrogen and a stream of nitrogen

ZA80746B
(en)

1981-02-25

Method and apparatus for manufacturing ammonia synthesis gas from a stream rich hydrogen and a stream of nitrogen

JPS5315290A
(en)

1978-02-10

Method of manufacturing hydrogen from gaseous mixtures mainly consisting of carbon monoxide and steam

JPS5319175A
(en)

1978-02-22

Apparatus for continuously adsorbing and deadsorbing highhpressure gas

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