EP0531182A1 - Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken - Google Patents

Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken Download PDF

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Publication number: EP0531182A1
Authority: EP; European Patent Office
Prior art keywords: column; oxygen; liquid; low pressure; gas
Prior art date: 1991-08-07
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

EP92402246A

Other languages

English (en)

French (fr)

Other versions

EP0531182B2 (de

EP0531182B1 (de

Inventor

François Camberlein

Jean-Louis Girault

Philippe Mazieres

Jean-Pierre Tranier

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

LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

Original Assignee

Air Liquide SA

LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

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.)

1991-08-07

Filing date

1992-08-06

Publication date

1993-03-10

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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9415988&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0531182(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1992-08-06 Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA

1993-03-10 Publication of EP0531182A1 publication Critical patent/EP0531182A1/de

1996-02-21 Application granted granted Critical

1996-02-21 Publication of EP0531182B1 publication Critical patent/EP0531182B1/de

2000-12-27 Publication of EP0531182B2 publication Critical patent/EP0531182B2/de

2012-08-06 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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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
- F25J3/02—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
- F25J3/04—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 for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
- F25J3/04551—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production
- F25J3/04557—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production for pig iron or steel making, e.g. blast furnace, Corex
- 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
- F25J3/04—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 for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
- 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
- F25J3/04—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 for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low 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
- 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
- F25J3/04—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 for air
- F25J3/0446—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 for air using the heat generated by mixing two different phases
- F25J3/04466—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 for air using the heat generated by mixing two different phases for producing oxygen as a mixing column overhead gas by mixing gaseous air feed and liquid oxygen
- 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
- F25J3/04—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 for air
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
- F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
- F25J3/04678—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser cooled by oxygen enriched liquid from high pressure column bottoms
- 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
- F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
- 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
- F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
- F25J2200/94—Details relating to the withdrawal point
- 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
- F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
- F25J2215/52—Oxygen production with multiple purity O2
- 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
- F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
- 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
- F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
- F25J2250/40—One fluid being air
- 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
- F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
- F25J2250/50—One fluid being oxygen
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S62/00—Refrigeration
- Y10S62/915—Combustion
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S62/00—Refrigeration
- Y10S62/939—Partial feed stream expansion, air

Definitions

the present invention relates to the air distillation technique.
coal gasification gasification of petroleum residues, direct reduction-smelting of iron ore, injection of coal into blast furnaces, metallurgy of non-ferrous metals, etc.
the object of the invention is to satisfy such needs economically, that is to say to allow, with a relatively low investment and energy consumption, the production of impure oxygen at a selected purity and pressure. at will and, if necessary, the production of practically pure oxygen.
the subject of the invention is a process for the distillation of air by means of a double distillation column coupled to a mixing column, in which the mixing column is supplied to the tank with an auxiliary gas consisting of a mixture of air gases, and at the top with a liquid richer in oxygen than the auxiliary gas, taken from the lower part of the low pressure column, and impure oxygen is drawn off at the top of the mixing column constituting a production gas, where the auxiliary gas and the liquid supplying the mixing column are compressed at the same pressure different from that of the medium pressure column, typically higher than the latter, advantageously at least 2 ⁇ 105 Pa.
Said liquid can be the bottom liquid of the low pressure column, in particular oxygen practically without nitrogen, or else it can be drawn off a few trays above the bottom of the low pressure column.
the invention also relates to an air distillation installation intended for the implementation of the process defined above, of the type comprising a double distillation column, a mixing column, a heat exchange line, a source an auxiliary gas consisting of a mixture of air gases, means for introducing the auxiliary gas at the base of the mixing column, means for withdrawing a liquid richer in oxygen than the auxiliary gas in the part bottom of the low pressure column, means for pumping this liquid and for introducing it at the top of the mixing column, and means for withdrawing impure oxygen at the head of the mixing column as gas for producing the installation, characterized in that it comprises means for compressing the auxiliary gas to a determined pressure different from that of the medium pressure column, passages for this compressed auxiliary gas provided in the line heat exchange and in that the pumping means bring the liquid to said determined pressure.
the invention also relates to the application of the process defined above to the supply of gas to a steelworks, said impure oxygen being produced under the pressure of the blast furnace and being sent to the latter.
said liquid is oxygen practically without nitrogen
said oxygen is sent practically without nitrogen to the converters of the steelworks.
FIGS. 1 to 3 schematically represent three embodiments of the air distillation installation according to the invention.
the air distillation installation shown in FIG. 1 is intended to produce impure oxygen, for example having a purity of 80 to 97% and preferably 85 to 95%, under a determined pressure P clearly different from 6 x 105 Pa abs., Per example under 2 to 5 x 105 Pa or advantageously under a pressure higher by at least 2 x 105 Pa and possibly up to around 30 x 105 Pa, preferably between 8 x 105 Pa and 15 x 105 Pa.
the installation essentially comprises a heat exchange line 1, a double distillation column 2 itself comprising a medium pressure column 3, a low pressure column 4 and a main condenser-vaporizer 5, and a mixing column 6. Columns 3 and 4 typically operate at approximately 6 x 105 Pa and approximately 1 x 105 Pa, respectively.
a mixing column is a column which has the same structure as a distillation column but which is used to mix in a manner close to reversibility a relatively volatile gas, introduced at its base, and a less volatile liquid, introduced at its top.
Such a mixture produces refrigerating energy and therefore makes it possible to reduce the energy consumption linked to the distillation.
this mixture is used, moreover, to directly produce impure oxygen under the pressure P, as will be described below.
the air to be separated by distillation, compressed to 6 x 105 Pa and suitably purified, is conveyed to the base of the medium pressure column 3 by a pipe 7. Most of this air is cooled in the exchange line 1 and introduced at the base of the medium pressure column 3, and the rest, boosted at 8 then cooled, is expanded at low pressure in a turbine 9 coupled to the booster 8, then blown at an intermediate point of the low pressure column 4. From “rich liquid” (oxygen-enriched air), taken from the tank of column 3 is, after expansion in an expansion valve 10, introduced into column 4, approximately at the point of air blowing.
Liquid oxygen is withdrawn from the tank of column 4, carried by a pump 13 at a pressure P1, slightly higher than the above-mentioned pressure P to take account of the losses load (P1-P less than 1 x 105 Pa), and introduced at the top of column 6.
P1 is therefore advantageously between 8 x 105 Pa and 30 x 105 Pa, preferably between 8 x 105 Pa and 16 x 105 Pa.
Auxiliary air, compressed at the same pressure P1 by an auxiliary compressor 14 and cooled in the exchange line 1, is introduced at the base of the mixing column 6.
FIG. 1 also shows auxiliary heat exchangers 19, 20, 21 ensuring the recovery of the cold available in the fluids circulating in the installation.
the pressure P of the impure oxygen produced can be chosen as desired.
the adjustment of the double column makes it possible to obtain various degrees of purity for this gas.
Another way of determining this degree of purity consists, as shown in FIG. 2, of choosing the level of sampling, in the low pressure column 4, of the liquid feeding the column 6, for example by leaving a few trays of distillation between the point and the column 4 tank.
the installation can produce, simultaneously with the impure oxygen of column 6, oxygen at a different purity and at a pressure, in particular oxygen roughly pure, by drawing off at the bottom of column 4.
This oxygen can be supplied in gaseous form, via a line 22 crossing the exchange line 1, under the low pressure of the low pressure column 4 or under pressure, in particular by pumping the liquid at 23 before it warms up in the exchange line; it can also be liquefied and sent to storage 24.
FIG. 3 differs from that of FIG. 2 in that it further comprises a column 25 for producing impure argon coupled, in a conventional manner, to the low pressure column 4.
the fact that the impure oxygen is produced not by the low pressure column 4 but by the mixing column 6 makes it possible to produce impure oxygen containing very little argon, which leaves the possibility of producing, in addition to argon, provided of course that the liquid oxygen withdrawn and pumped at 13 has sufficient purity, in particular at least equal to 98%.
the air auxiliary to the pressure P1 may be suitably purified atmospheric air, but also come from an annex process comprising an air compressor. It may for example be air taken from the inlet of a gas turbine and the pressure of which may be adjusted by means of a booster or an expansion turbine. More generally, it is possible to use, to feed the base of the mixing column 6, a mixture of air gases less rich in oxygen than the liquid taken from the lower part of the low pressure column, in particular impure nitrogen originating possibly from the installation itself.
the invention makes it possible to simultaneously produce, under particularly economical conditions of investment and energy consumption, pure or nearly pure oxygen, impure oxygen and argon.
the oxygen produced by column 4 is practically devoid of nitrogen and can therefore be used in the converters of a steelworks.
the installation in the form of FIG. 2, thus makes it possible to supply both these converters with pure oxygen and the blast furnace of the steelworks with impure oxygen at the pressure of the blast furnace; in its form in FIG. 3, the installation can also supply the steelworks with argon.

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Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Mechanical Engineering (AREA)
Thermal Sciences (AREA)
General Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Health & Medical Sciences (AREA)
Emergency Medicine (AREA)
Separation By Low-Temperature Treatments (AREA)

EP92402246A 1991-08-07 1992-08-06 Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken Expired - Lifetime EP0531182B2 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR9110035		1991-08-07
FR9110035A FR2680114B1 (fr)	1991-08-07	1991-08-07	Procede et installation de distillation d'air, et application a l'alimentation en gaz d'une acierie.

Publications (3)

Publication Number	Publication Date
EP0531182A1 true EP0531182A1 (de)	1993-03-10
EP0531182B1 EP0531182B1 (de)	1996-02-21
EP0531182B2 EP0531182B2 (de)	2000-12-27

Family

ID=9415988

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP92402246A Expired - Lifetime EP0531182B2 (de)	1991-08-07	1992-08-06	Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken

Country Status (9)

Country	Link
US (1)	US5291737A (de)
EP (1)	EP0531182B2 (de)
CN (1)	CN1062656C (de)
AU (1)	AU655485B2 (de)
BR (1)	BR9203049A (de)
CA (1)	CA2075420C (de)
DE (1)	DE69208412T3 (de)
ES (1)	ES2083709T5 (de)
FR (1)	FR2680114B1 (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0636845A1 (de) *	1993-04-30	1995-02-01	The BOC Group plc	Lufttrenung
EP0697576A1 (de) *	1994-08-17	1996-02-21	The Boc Group, Inc.	Verfahren und Vorrichtung zur Lufttrennung
EP0698772A1 (de) *	1994-08-25	1996-02-28	The Boc Group, Inc.	Verfahren und Vorrichtung zur Herstellung von Sauerstoff
EP0932006A1 (de) *	1998-01-23	1999-07-28	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Komibinierte Ofen und Lufttrennungsanlage und Verfahren zur Anwendung
EP0932005A1 (de) *	1998-01-23	1999-07-28	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Komibinierte Ofen und Lufttrennungsanlage und Verfahren zur Anwendung
EP0982554A1 (de) *	1998-08-28	2000-03-01	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Verfahren und Anlage zur Herstellung von unreinem Sauerstoff durch Rektifikation
FR2789162A1 (fr) *	1999-02-01	2000-08-04	Air Liquide	Procede de separation d'air par distillation cryogenique
EP1387136A1 (de) *	2002-08-02	2004-02-04	Linde AG	Verfahren und Vorrichtung zur Erzeugung von unreinem Sauerstoff durch Tieftemperaturzerlegung von Luft
US6871513B2 (en)	2000-10-30	2005-03-29	L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude	Process and installation for separation of air by cryogenic distillation integrated with an associated process
EP1666824A1 (de) *	2004-12-03	2006-06-07	Linde Aktiengesellschaft	Verfahren und Vorrichtung zur Gewinnung von Argon durch Tieftemperaturzerlegung von Luft
WO2007099246A2 (fr) *	2006-03-03	2007-09-07	L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude	Procede d'integration d'un haut-fourneau et d'une unite de separation de gaz de l'air
US7645319B2 (en)	2004-02-27	2010-01-12	L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude	Method for renovating a combined blast furnace and air/gas separation unit system
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Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5440884A (en) *	1994-07-14	1995-08-15	Praxair Technology, Inc.	Cryogenic air separation system with liquid air stripping
FR2731781B1 (fr) *	1995-03-15	1997-05-23	Air Liquide	Procede et appareil de vaporisation d'un debit liquide
US5582036A (en) *	1995-08-30	1996-12-10	Praxair Technology, Inc.	Cryogenic air separation blast furnace system
US5666823A (en)	1996-01-31	1997-09-16	Air Products And Chemicals, Inc.	High pressure combustion turbine and air separation system integration
US5628207A (en) *	1996-04-05	1997-05-13	Praxair Technology, Inc.	Cryogenic Rectification system for producing lower purity gaseous oxygen and high purity oxygen
US5596886A (en) *	1996-04-05	1997-01-28	Praxair Technology, Inc.	Cryogenic rectification system for producing gaseous oxygen and high purity nitrogen
FR2753638B1 (fr) *	1996-09-25	1998-10-30		Procede pour l'alimentation d'une unite consommatrice d'un gaz
FR2776057B1 (fr) *	1998-03-11	2000-06-23	Air Liquide	Procede et installation de separation d'air par distillation cryogenique
US5865041A (en) *	1998-05-01	1999-02-02	Air Products And Chemicals, Inc.	Distillation process using a mixing column to produce at least two oxygen-rich gaseous streams having different oxygen purities
FR2801963B1 (fr)	1999-12-02	2002-03-29	Air Liquide	Procede et installation de separation d'air par distillation cryogenique
FR2795496B1 (fr)	1999-06-22	2001-08-03	Air Liquide	Appareil et procede de separation d'air par distillation cryogenique
FR2814178B1 (fr)	2000-09-18	2002-10-18	Air Liquide	Alimentation en air enrichi en oxygene d'une unite de production de metal non-ferreux
DE10139727A1 (de)	2001-08-13	2003-02-27	Linde Ag	Verfahren und Vorrichtung zur Gewinnung eines Druckprodukts durch Tieftemperaturzerlegung von Luft
FR2861841B1 (fr) *	2003-11-04	2006-06-30	Air Liquide	Procede et appareil de separation d'air par distillation cryogenique
FR2862128B1 (fr) *	2003-11-10	2006-01-06	Air Liquide	Procede et installation de fourniture d'oxygene a haute purete par distillation cryogenique d'air
FR2862004B3 (fr) *	2003-11-10	2005-12-23	Air Liquide	Procede et installation d'enrichissement d'un flux gazeux en l'un de ses constituants
FR2895068B1 (fr) *	2005-12-15	2014-01-31	Air Liquide	Procede de separation d'air par distillation cryogenique
EP1845323A1 (de) *	2006-04-13	2007-10-17	Linde Aktiengesellschaft	Verfahren und Vorrichtung zur Erzeugung eines Druckprodukts durch Tieftemperatur-Luftzerlegung
CN111271940A (zh) *	2020-01-19	2020-06-12	浙江智海化工设备工程有限公司	一种新型富氧生产方法
CN115885146A (zh) *	2020-07-22	2023-03-31	乔治洛德方法研究和开发液化空气有限公司	氩气增强方法和装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1314605A (fr) *	1961-01-26	1963-01-11	Lindes Eismaschinen Ag	Procédé et installation pour la rectification pour la décomposition de gaz à basse température
FR2169561A6 (de) *	1971-02-01	1973-09-07	Air Liquide

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2125949B (en) *	1982-08-24	1985-09-11	Air Prod & Chem	Plant for producing gaseous oxygen
US4595405A (en) *	1984-12-21	1986-06-17	Air Products And Chemicals, Inc.	Process for the generation of gaseous and/or liquid nitrogen
DE3722746A1 (de) *	1987-07-09	1989-01-19	Linde Ag	Verfahren und vorrichtung zur luftzerlegung durch rektifikation
FR2655137B1 (fr) *	1989-11-28	1992-10-16	Air Liquide	Procede et installation de distillation d'air avec production d'argon.
US5144808A (en) *	1991-02-12	1992-09-08	Liquid Air Engineering Corporation	Cryogenic air separation process and apparatus
US5152149A (en) *	1991-07-23	1992-10-06	The Boc Group, Inc.	Air separation method for supplying gaseous oxygen in accordance with a variable demand pattern

1991
- 1991-08-07 FR FR9110035A patent/FR2680114B1/fr not_active Expired - Fee Related
1992
- 1992-07-31 US US07/923,336 patent/US5291737A/en not_active Expired - Lifetime
- 1992-08-05 AU AU20798/92A patent/AU655485B2/en not_active Ceased
- 1992-08-06 DE DE69208412T patent/DE69208412T3/de not_active Expired - Fee Related
- 1992-08-06 EP EP92402246A patent/EP0531182B2/de not_active Expired - Lifetime
- 1992-08-06 CA CA002075420A patent/CA2075420C/fr not_active Expired - Fee Related
- 1992-08-06 ES ES92402246T patent/ES2083709T5/es not_active Expired - Lifetime
- 1992-08-06 BR BR929203049A patent/BR9203049A/pt not_active IP Right Cessation
- 1992-08-07 CN CN92110647A patent/CN1062656C/zh not_active Expired - Fee Related

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1314605A (fr) *	1961-01-26	1963-01-11	Lindes Eismaschinen Ag	Procédé et installation pour la rectification pour la décomposition de gaz à basse température
FR2169561A6 (de) *	1971-02-01	1973-09-07	Air Liquide

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0636845A1 (de) *	1993-04-30	1995-02-01	The BOC Group plc	Lufttrenung
US5582035A (en) *	1993-04-30	1996-12-10	The Boc Group Plc	Air separation
EP0697576A1 (de) *	1994-08-17	1996-02-21	The Boc Group, Inc.	Verfahren und Vorrichtung zur Lufttrennung
EP0698772A1 (de) *	1994-08-25	1996-02-28	The Boc Group, Inc.	Verfahren und Vorrichtung zur Herstellung von Sauerstoff
FR2774157A1 (fr) *	1998-01-23	1999-07-30	Air Liquide	Installation combinee d'un four et d'un appareil de distillation d'air et procede de mise en oeuvre
EP0932005A1 (de) *	1998-01-23	1999-07-28	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Komibinierte Ofen und Lufttrennungsanlage und Verfahren zur Anwendung
FR2774159A1 (fr) *	1998-01-23	1999-07-30	Air Liquide	Installation combinee d'un four et d'un appareil de distillation d'air et procede de mise en oeuvre
US6089040A (en) *	1998-01-23	2000-07-18	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Combined plant of a furnace and an air distillation device and implementation process
EP0932006A1 (de) *	1998-01-23	1999-07-28	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Komibinierte Ofen und Lufttrennungsanlage und Verfahren zur Anwendung
EP0982554A1 (de) *	1998-08-28	2000-03-01	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Verfahren und Anlage zur Herstellung von unreinem Sauerstoff durch Rektifikation
US6247333B1 (en)	1998-08-28	2001-06-19	L'air Liquide, Societe Anonyme Pour L'etrude Et L'exploitation Des Procedes Georges Claude	Process for supplying impure oxygen to a synthesis-gas production unit
FR2789162A1 (fr) *	1999-02-01	2000-08-04	Air Liquide	Procede de separation d'air par distillation cryogenique
EP1026464A1 (de) *	1999-02-01	2000-08-09	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Luftzerlegungverfahren durch Tieftemperaturrektifikation
US6295835B1 (en)	1999-02-01	2001-10-02	L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Process for air separation by cryogenic distillation
US6871513B2 (en)	2000-10-30	2005-03-29	L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude	Process and installation for separation of air by cryogenic distillation integrated with an associated process
EP1387136A1 (de) *	2002-08-02	2004-02-04	Linde AG	Verfahren und Vorrichtung zur Erzeugung von unreinem Sauerstoff durch Tieftemperaturzerlegung von Luft
US7645319B2 (en)	2004-02-27	2010-01-12	L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude	Method for renovating a combined blast furnace and air/gas separation unit system
EP1666824A1 (de) *	2004-12-03	2006-06-07	Linde Aktiengesellschaft	Verfahren und Vorrichtung zur Gewinnung von Argon durch Tieftemperaturzerlegung von Luft
AU2007220388B2 (en) *	2006-03-03	2010-09-16	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Method of integrating a blast furnace with an air gas separation unit
WO2007099246A3 (fr) *	2006-03-03	2009-01-29	Air Liquide	Procede d'integration d'un haut-fourneau et d'une unite de separation de gaz de l'air
FR2898134A1 (fr) *	2006-03-03	2007-09-07	Air Liquide	Procede d'integration d'un haut-fourneau et d'une unite de separation de gaz de l'air
EA013661B1 (ru) *	2006-03-03	2010-06-30	Л`Эр Ликид, Сосьете Аноним Пур Л`Этюд Э Л`Эксплуатасьон Де Проседе Жорж Клод	Способ интеграции доменной печи и устройства разделения газов воздуха
WO2007099246A2 (fr) *	2006-03-03	2007-09-07	L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude	Procede d'integration d'un haut-fourneau et d'une unite de separation de gaz de l'air
AU2007220388B8 (en) *	2006-03-03	2011-01-20	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Method of integrating a blast furnace with an air gas separation unit
EP2703757A1 (de)	2012-09-04	2014-03-05	Linde Aktiengesellschaft	Verfahren und Anlage zur Erzeugung flüssiger und gasförmiger Sauerstoffprodukte durch Tieftemperaturzerlegung von Luft
DE102012017484A1 (de)	2012-09-04	2014-03-06	Linde Aktiengesellschaft	Verfahren und Anlage zur Erzeugung flüssiger und gasförmiger Sauerstoffprodukte durch Tieftemperaturzerlegung von Luft
DE102012017488A1 (de)	2012-09-04	2014-03-06	Linde Aktiengesellschaft	Verfahren zur Erstellung einer Luftzerlegungsanlage, Luftzerlegungsanlage und zugehöriges Betriebsverfahren
WO2014037091A2 (de)	2012-09-04	2014-03-13	Linde Aktiengesellschaft	Verfahren und anlage zur erzeugung flüssiger und gasförmiger sauerstoffprodukte durch tieftemperaturzerlegung von luft
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Also Published As

Publication number	Publication date
AU655485B2 (en)	1994-12-22
DE69208412D1 (de)	1996-03-28
CA2075420C (fr)	2003-05-13
FR2680114A1 (fr)	1993-02-12
CN1071000A (zh)	1993-04-14
EP0531182B2 (de)	2000-12-27
US5291737A (en)	1994-03-08
CN1062656C (zh)	2001-02-28
DE69208412T2 (de)	1996-07-04
AU2079892A (en)	1993-02-11
EP0531182B1 (de)	1996-02-21
FR2680114B1 (fr)	1994-08-05
BR9203049A (pt)	1993-05-04
ES2083709T3 (es)	1996-04-16
DE69208412T3 (de)	2001-08-23
ES2083709T5 (es)	2001-03-16
CA2075420A1 (fr)	1993-02-08

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Publication	Publication Date	Title
EP0531182B1 (de)	1996-02-21	Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken
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EP0430803A1 (de)	1991-06-05	Verfahren und Einrichtung zur Luftdestillierung mit Argongewinnung
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