GB2234451A - Process for the purification of gases - Google Patents

Process for the purification of gases Download PDF

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Publication number
GB2234451A
GB2234451A GB9015323A GB9015323A GB2234451A GB 2234451 A GB2234451 A GB 2234451A GB 9015323 A GB9015323 A GB 9015323A GB 9015323 A GB9015323 A GB 9015323A GB 2234451 A GB2234451 A GB 2234451A
Authority
GB
United Kingdom
Prior art keywords
adsorption
zirconium
gases
iron
getters
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
GB9015323A
Other versions
GB9015323D0 (en
GB2234451B (en
Inventor
Walter Franke
Reiner Hamm
Hans Hiller
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Publication of GB9015323D0 publication Critical patent/GB9015323D0/en
Publication of GB2234451A publication Critical patent/GB2234451A/en
Application granted granted Critical
Publication of GB2234451B publication Critical patent/GB2234451B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B23/00—Noble gases; Compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/04—Purification or separation of nitrogen
    • C01B21/0405—Purification or separation processes
    • C01B21/0433—Physical processing only
    • C01B21/045—Physical processing only by adsorption in solids
    • C01B21/0483—Physical processing only by adsorption in solids in getters

Abstract

The fine purification of rare gases or nitrogen is carried out by adsorption on getters of alloys of zirconium-iron, zirconium-vanadium-iron or zirconium-aluminium at several hundred DEG C. Subsequently, the purified gases are compressed and filled into pressurized gas cylinders. To ensure the purity of the gas to be filled, the adsorption is carried out under pressures of up to 230 bar. <IMAGE>

Description

j - 1 Process for the fine purification of qases
The invention relates to a process for the fine purification of gases by adsorption on getters, in accordance with the preamble of Claim 1.
Fine purification here means the production of extremely pure gases down to class 7.0, and the filling thereof into pressurized gas containers. In a gas of class 7.0, the total of all impurities is at most 0.1 ppm.
According to the state of the art, the fine purification of such gases is carried out by adsorption on getters which consist of zirconium-iron, zirconiumvanadium-iron or zirconium-aluminium alloys. The adsorption temperature is between 350 and 600"C and the adsorption pressures amount to a few bar. Such p,-rifi- cation processes are described, especially for nitrogen and rare gases, in German Off enlegungsschrif ten 3,621,013 and 3,621,014. The gases purified in such a way are then A filled by means of compressors into the pressurized gas containers. The internal surface of the pressurized gas containers, that is to say the pressurized gas cylinders of aluminium or steel, is cleaned and treated by various processes, so that only the slightest possible interactions take place between the internal surface and the gas filled in, that is to say that the high gas purity is ensured over a prolonged period. Extremely pure gases of class 7. 0 can be produced by this process, but it is desirable even within this purity class to obtain gases with the smallest possible amount of impurities.
It is therefore the object of the invention, in a process for the fine purification of gases, which are to be f illed into pressurized gas containers, by adsorption on getters, to increase the purity of the gases filled in.
Starting from the state of the art taken into account in the preamble of Claim 1, this object is achieved according to the invention by the features indicated in the characterizing clause of Claim 1.
Advantageous further developments of the invention are indicated in the subclaims.
The process according to the invention thus starts from the hitherto conventional fine purification of gases by adsorption on getters, but, according to the invention, the adsorption takes place under those pressures which correspond to the f illing pressures in the pressurized gas containers. As a result, the use of a compressor on the pure side, that is to say after the gases have passed through the adsorber, is avoided. This compressor is a potential source for recontamination of the product gas with impurities.
\ The process according to the invention requires the use of an adsorber having a steel casing which can be subjected to the said temperatures and pressures. The housing is filled with the getter in the form of pellets, granules or powder. Heating is effected electrically by means of heating conductors fixed to the adsorber housing.
A

Claims (3)

Claims
1. Process for the fine purification of gases by adsorption on getters, consisting of zirconium-iron, zirconium-vanadium-iron or zirconiumaluminium alloys, at temperatures between 350" and 6000C, characterized in that the adsorption takes place under pressures of up to 230 bar.
2. Process according to Claim 1 for the fine purification of rare gases, characterized in that the adsorption is carried out on getters of a zirconiumvanadium-iron alloy or zirconium-aluminium alloy.
3. Process according to Claim 1 for the fine purification of nitrogen, characterized in that the adsorption is carried out on getters of zirconium-iron alloy.
Published 1991 2t'Me Patent Office, State House. 66/71 High Holborn. L4)ndonWC I R47P. Further copies my be obtained from Sales Branch, Unit 6. Nine Mile Point, Cwmfelinfach, Cross Keys. Newport. NPI 7HZ. Printed by Multiplex techniques lid. St Marv Cray. Kent
GB9015323A 1989-08-05 1990-07-12 Process for the fine purification of gases Expired - Fee Related GB2234451B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3926015A DE3926015A1 (en) 1989-08-05 1989-08-05 METHOD FOR THE FINE PURIFICATION OF GASES

Publications (3)

Publication Number Publication Date
GB9015323D0 GB9015323D0 (en) 1990-08-29
GB2234451A true GB2234451A (en) 1991-02-06
GB2234451B GB2234451B (en) 1993-07-07

Family

ID=6386626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9015323A Expired - Fee Related GB2234451B (en) 1989-08-05 1990-07-12 Process for the fine purification of gases

Country Status (4)

Country Link
DE (1) DE3926015A1 (en)
FR (1) FR2650513B1 (en)
GB (1) GB2234451B (en)
IT (1) IT1246035B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5489327A (en) * 1994-03-04 1996-02-06 Japan Pionics Co., Ltd. Process for purifying hydrogen gas
WO1997020652A1 (en) * 1995-12-01 1997-06-12 Asea Brown Boveri Ab Method and device for hot-isostatic pressing of parts
US5669961A (en) * 1993-07-12 1997-09-23 Lockheed Martin Idaho Technologies Company Method for the purification of noble gases, nitrogen and hydrogen
FR2812823A1 (en) * 2000-08-10 2002-02-15 Atto Co Ltd Purification of nitrogen comprises use of combination of methane oxidation catalyst and nitrogen-saturated zirconium getter alloy
US6860923B2 (en) * 2002-08-14 2005-03-01 Texaco Ovonic Hydrogen Systems Llc Onboard hydrogen storage unit with heat transfer system for use in a hydrogen powered vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19528784C1 (en) * 1995-08-04 1996-08-29 Inst Neuwertwirtschaft Gmbh Inert gas purificn. to purity suitable for laser and cryo-technology

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043691A (en) * 1979-02-05 1980-10-08 Getters Spa Method for the sorption of water water vapour and other gases utilizing a non-evaporable ternary gettering alloy
US4306887A (en) * 1979-04-06 1981-12-22 S.A.E.S. Getters S.P.A. Getter device and process for using such
GB2177080A (en) * 1985-06-28 1987-01-14 Taiyo Sanso Co Ltd Superpurifier for nitrogen and process for purifying same
GB2177079A (en) * 1985-06-28 1987-01-14 Taiyo Sanso Co Ltd Superpurifier for argon gas and process for purifying argon gas
EP0365490A1 (en) * 1988-09-26 1990-04-25 SAES GETTERS S.p.A. Apparatus and method for the removal of impurity gases from inert gases and the ensurance of extremely low levels of hydrogen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1110295B (en) * 1979-02-05 1985-12-23 Getters Spa NON-EVAPORABLE TERNARY GETTERING ALLOY PARTICULARLY FOR THE ABSORPTION OF WATER AND WATER VAPOR IN FUEL BARS OF NUCLEAR REACTORS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043691A (en) * 1979-02-05 1980-10-08 Getters Spa Method for the sorption of water water vapour and other gases utilizing a non-evaporable ternary gettering alloy
US4306887A (en) * 1979-04-06 1981-12-22 S.A.E.S. Getters S.P.A. Getter device and process for using such
GB2177080A (en) * 1985-06-28 1987-01-14 Taiyo Sanso Co Ltd Superpurifier for nitrogen and process for purifying same
GB2177079A (en) * 1985-06-28 1987-01-14 Taiyo Sanso Co Ltd Superpurifier for argon gas and process for purifying argon gas
EP0365490A1 (en) * 1988-09-26 1990-04-25 SAES GETTERS S.p.A. Apparatus and method for the removal of impurity gases from inert gases and the ensurance of extremely low levels of hydrogen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5669961A (en) * 1993-07-12 1997-09-23 Lockheed Martin Idaho Technologies Company Method for the purification of noble gases, nitrogen and hydrogen
US5489327A (en) * 1994-03-04 1996-02-06 Japan Pionics Co., Ltd. Process for purifying hydrogen gas
WO1997020652A1 (en) * 1995-12-01 1997-06-12 Asea Brown Boveri Ab Method and device for hot-isostatic pressing of parts
US6250907B1 (en) 1995-12-01 2001-06-26 Flow Holdings Gmbh (Sagl), Llc Device for hot-isostatic pressing of parts
US6331271B1 (en) 1995-12-01 2001-12-18 Flow Holdings Gmbh, (Sagl) Llc Method for hot-isostatic pressing of parts
FR2812823A1 (en) * 2000-08-10 2002-02-15 Atto Co Ltd Purification of nitrogen comprises use of combination of methane oxidation catalyst and nitrogen-saturated zirconium getter alloy
US6860923B2 (en) * 2002-08-14 2005-03-01 Texaco Ovonic Hydrogen Systems Llc Onboard hydrogen storage unit with heat transfer system for use in a hydrogen powered vehicle

Also Published As

Publication number Publication date
IT1246035B (en) 1994-11-07
FR2650513A1 (en) 1991-02-08
DE3926015A1 (en) 1991-02-07
FR2650513B1 (en) 1993-02-19
IT9020860A0 (en) 1990-07-04
GB9015323D0 (en) 1990-08-29
IT9020860A1 (en) 1992-01-04
GB2234451B (en) 1993-07-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940712