EP0884543A1 - Procédé et installation de séparation d'air par distillation cryogénique - Google Patents
Procédé et installation de séparation d'air par distillation cryogénique Download PDFInfo
- Publication number
- EP0884543A1 EP0884543A1 EP98401366A EP98401366A EP0884543A1 EP 0884543 A1 EP0884543 A1 EP 0884543A1 EP 98401366 A EP98401366 A EP 98401366A EP 98401366 A EP98401366 A EP 98401366A EP 0884543 A1 EP0884543 A1 EP 0884543A1
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- European Patent Office
- Prior art keywords
- column
- flow
- liquid
- air
- condenser
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Classifications
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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
- F25J3/04—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
- F25J3/04406—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 a dual pressure main column system
- F25J3/04412—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 a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
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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
- F25J3/04—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
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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
- F25J3/04—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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
- F25J3/042—Division of the main heat exchange line in consecutive sections having different functions having an intermediate feed connection
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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
- F25J3/04—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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
- F25J3/04206—Division of the main heat exchange line in consecutive sections having different functions including a so-called "auxiliary vaporiser" for vaporising and producing a gaseous product
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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
- F25J3/04—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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/0423—Subcooling of liquid process streams
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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
- F25J3/04—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
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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
- F25J3/04—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
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04854—Safety aspects of operation
- F25J3/0486—Safety aspects of operation of vaporisers for oxygen enriched liquids, e.g. purging of liquids
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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
- 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
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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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
- F25J2200/54—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the low pressure column of a double pressure main column system
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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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/02—Mixing or blending of fluids to yield a certain product
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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
- 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
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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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/50—Processes or apparatus involving steps for recycling of process streams the recycled stream being oxygen
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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
- 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
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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
- 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
Definitions
- the present invention relates to a method and an installation for cryogenic distillation.
- Processes of this type are known from DE-A-3843359 and DE-A-3643359 in which the air of the blowing turbine is cooled by heat exchange with a gas flow enriched with oxygen.
- SU-A-739316 and SU-A-1231343 disclose air cooling from an insufflation turbine with a nitrogen flow withdrawn from the medium pressure column.
- EP-A-0 081 473 suggests cooling the expanded air in the turbine insufflation by heat exchange with an air flow intended for the column medium pressure.
- EP-A-153 673 describes an apparatus in which the supply air flow is cooled by exchanging heat with nitrogen from the top of the column low pressure.
- FR-A-1 289 009 describes the cooling of the supply air against a flow pumped liquid oxygen.
- EP-A-0 556 516 describes the cooling of the blown air against rich liquid.
- EP-A-605 262 proposes to spray the purges under pressure liquid oxygen to avoid the risk of hydrocarbon explosion.
- the purpose of the present invention is to enhance the frigories contained in a liquid from the double column effectively.
- an installation is also provided. according to claim 8.
- Figure 1 shows a nitrogen production plant similar to those described in FR-A-2 578 532, EP-A-153 673 and EP-A-575 591. It includes a heat exchange line 1 and a double column of distillation 2. The latter consists of a medium pressure column 3 operating under a pressure of the order of 8 to 10 bars and a column low pressure operating under a pressure of the order of 4 to 5 bars. Each of these columns has a head condenser 5,6 respectively.
- a first flow of compressed air 7 at a slight pressure above the medium pressure is cooled near its point of dew through the exchange line 1 and introduced at the base of column 3.
- the rich liquid in equilibrium with this air, collected in the tank of column 3 is expanded at low pressure in an expansion valve 8 and introduced into a intermediate point of column 4.
- the descending liquid enriched with oxygen comes to the tank to cool the main condenser 5 to reflux in column 3.
- Some of the same liquid is again expanded, up to a pressure of the order of 1 bar in an expansion valve 9 then serves to cool the auxiliary condenser 6 to ensure reflux into the column 4.
- the same liquid after vaporization is sent against the current by a pipe 11 through the exchange line 1 to constitute the waste gas of the installation.
- the vapor which rises in column 4 is enriched with nitrogen and this is nitrogen which is condensed by the auxiliary condenser 6.
- a second air flow 12 is expanded in an insufflation turbine 13, cools in the exchanger 14 and is introduced into the lower column pressure 4.
- a purge liquid flow 15 containing about 82% oxygen is withdrawn from the auxiliary condenser, is pressurized by pump 16 and sent to the exchanger 14 where it vaporizes. The vaporized purge flow is then evacuated of the installation.
- Nitrogen gas 17 is drawn off at the top of column 4 as product. There is also a small production of liquid nitrogen 18.
- the low pressure column 4 has no head condenser.
- the oxygen in the tank of column 4 is withdrawn as product and a liquid purge flow 20 of this tank is vaporized by exchange heat with the blown air, after a possible pressurization step.
- the purge liquid which is used to cool the air coming from the turbine also could be a purge from another column of the installation (Etienne column, argon column).
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
- le débit liquide est au moins partiellement vaporisé par échange de chaleur avec l'air insufflé.
- le débit liquide provient de la double colonne.
- le débit liquide est un débit de purge provenant de la double colonne ou d'une autre colonne de l'installation.
- la colonne moyenne pression et la colonne basse pression sont reliées thermiquement par un condenseur de cuve de la colonne basse pression et le débit de purge est un débit de purge de ce condenseur.
- la colonne basse pression a un condenseur de tête refroidi par un débit enrichi en oxygène et le débit liquide est un débit de purge provenant du condenseur de tête.
- le débit liquide est pressurisé avant d'échanger de la chaleur avec l'air insufflé.
- le condenseur est un condenseur de cuve ou un condenseur de tête de la colonne basse pression.
- les figures 1 et 2 sont des schémas d'installations suivant l'invention
Claims (9)
- Procédé de séparation d'air par distillation cryogénique dans une double colonne (2) comprenant une colonne moyenne pression (3) et une colonne basse pression (4) dans lequela) un premier débit d'air (7) est envoyé à la colonne moyenne pression où il se sépare en un liquide enrichi en oxygène et une vapeur enrichie en azoteb) un deuxième débit d'air (12) est détendu dans une turbine d'insufflation (13), refroidi et envoyé à la colonne basse pressionc) des fluides enrichis en azote et en oxygène sont produits dans la colonne basse pression
- Procédé selon la revendication 1 dans lequel le débit de purge est au moins partiellement vaporisé par échange de chaleur avec l'air insufflé.
- Procédé selon la revendication 1 ou 2 dans lequel le débit de purge provient de la double colonne.
- Procédé selon la revendication 3 dans lequel le débit de purge provient d'une colonne argon ou une colonne Etienne associée à la double colonne.
- Procédé selon la revendication 4 dans lequel la colonne moyenne pression et la colonne basse pression sont reliées thermiquement par un condenseur (5) de cuve de la colonne basse pression et le débit de purge (20) est un débit de purge de ce condenseur.
- Procédé selon la revendication 4 ou 5 dans lequel la colonne basse pression a un condenseur (6) de tête refroidi par un débit enrichi en oxygène et le débit liquide (15) est un débit de purge provenant du condenseur de tête.
- Procédé selon une des revendications précédentes dans lequel le débit liquide est pressurisé avant d'échanger de la chaleur avec l'air insufflé.
- Installation de séparation d'air par distillation cryogénique dans une double colonne (2) comprenant une colonne moyenne pression (3) et une colonne basse pression (4),des moyens pour envoyer un premier débit d'air refroidi (7) à la colonne moyenne pression,des moyens pour envoyer un deuxième débit d'air refroidi (12) à une turbine d'insufflation (13),des moyens pour envoyer le deuxième débit détendu à un échangeur de chaleur (14),des moyens pour envoyer le deuxième débit détendu de l'échangeur de chaleur à la colonne basse pression,des moyens pour envoyer un liquide de la cuve de la colonne moyenne pression à la colonne basse pression,des moyens pour envoyer un liquide (15,20) à l'échangeur caractérisée en ce que le liquide envoyé à l'échangeur est un liquide de purge d'un condenseur de l'installation.
- Installation selon la revendication 9 dans laquelle le condenseur est un condenseur de cuve (5) ou un condenseur de tête (6) de la colonne basse pression ou un condenseur de colonne argon ou de colonne Etienne.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9707357 | 1997-06-13 | ||
FR9707357A FR2764681B1 (fr) | 1997-06-13 | 1997-06-13 | Procede et installation de separation d'air par distillation cryogenique |
Publications (1)
Publication Number | Publication Date |
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EP0884543A1 true EP0884543A1 (fr) | 1998-12-16 |
Family
ID=9507950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98401366A Withdrawn EP0884543A1 (fr) | 1997-06-13 | 1998-06-08 | Procédé et installation de séparation d'air par distillation cryogénique |
Country Status (6)
Country | Link |
---|---|
US (1) | US6047562A (fr) |
EP (1) | EP0884543A1 (fr) |
JP (1) | JPH1183310A (fr) |
AU (1) | AU730328B2 (fr) |
CA (1) | CA2240379A1 (fr) |
FR (1) | FR2764681B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3757493A1 (fr) * | 2019-06-25 | 2020-12-30 | Linde GmbH | Procédé et installation d'obtention d'un produit dérivé de l'air riche en azote et riche en oxygène au moyen d'un fractionnement à basse température de l'air |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030121982A1 (en) * | 2001-12-27 | 2003-07-03 | Ncr Corporation | Kiosk having leverageable scanner |
CN113310282A (zh) * | 2021-05-26 | 2021-08-27 | 中国空分工程有限公司 | 一种带泵双塔精馏及低温正流膨胀制氮系统及制氮方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1289009A (fr) * | 1960-04-11 | 1962-03-30 | British Oxygen Co Ltd | Séparation d'air |
GB1271419A (en) * | 1969-08-16 | 1972-04-19 | Bernard Ramsey Bligh | Air distillation process |
EP0153673A2 (fr) * | 1984-02-21 | 1985-09-04 | Air Products And Chemicals, Inc. | Cycle de génération de l'azote à alimentation double de l'air sous pression |
DE3643359A1 (de) * | 1986-12-18 | 1988-06-23 | Linde Ag | Verfahren und vorrichtung zur luftzerlegung durch zweistufige rektifikation |
EP0556516A2 (fr) * | 1992-02-18 | 1993-08-25 | Air Products And Chemicals, Inc. | Cycles de séparation d'air à rebouilleur, à colonne double, à pression élevée et leur intégration dans des turbines à gaz |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4662910A (en) * | 1986-02-18 | 1987-05-05 | Christian Lieb | Device for removing particulates from a gas stream |
US4662916A (en) * | 1986-05-30 | 1987-05-05 | Air Products And Chemicals, Inc. | Process for the separation of air |
US5074898A (en) * | 1990-04-03 | 1991-12-24 | Union Carbide Industrial Gases Technology Corporation | Cryogenic air separation method for the production of oxygen and medium pressure nitrogen |
US5074892A (en) * | 1990-05-30 | 1991-12-24 | Union Carbide Industrial Gases Technology Corporation | Air separation pressure swing adsorption process |
FR2701313B1 (fr) * | 1993-02-09 | 1995-03-31 | Air Liquide | Procédé et installation de production d'azote ultra-pur par distillation d'air. |
-
1997
- 1997-06-13 FR FR9707357A patent/FR2764681B1/fr not_active Expired - Fee Related
-
1998
- 1998-06-05 US US09/090,886 patent/US6047562A/en not_active Expired - Fee Related
- 1998-06-08 EP EP98401366A patent/EP0884543A1/fr not_active Withdrawn
- 1998-06-10 AU AU70054/98A patent/AU730328B2/en not_active Ceased
- 1998-06-11 JP JP10163969A patent/JPH1183310A/ja active Pending
- 1998-06-11 CA CA002240379A patent/CA2240379A1/fr not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1289009A (fr) * | 1960-04-11 | 1962-03-30 | British Oxygen Co Ltd | Séparation d'air |
GB1271419A (en) * | 1969-08-16 | 1972-04-19 | Bernard Ramsey Bligh | Air distillation process |
EP0153673A2 (fr) * | 1984-02-21 | 1985-09-04 | Air Products And Chemicals, Inc. | Cycle de génération de l'azote à alimentation double de l'air sous pression |
DE3643359A1 (de) * | 1986-12-18 | 1988-06-23 | Linde Ag | Verfahren und vorrichtung zur luftzerlegung durch zweistufige rektifikation |
EP0556516A2 (fr) * | 1992-02-18 | 1993-08-25 | Air Products And Chemicals, Inc. | Cycles de séparation d'air à rebouilleur, à colonne double, à pression élevée et leur intégration dans des turbines à gaz |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3757493A1 (fr) * | 2019-06-25 | 2020-12-30 | Linde GmbH | Procédé et installation d'obtention d'un produit dérivé de l'air riche en azote et riche en oxygène au moyen d'un fractionnement à basse température de l'air |
Also Published As
Publication number | Publication date |
---|---|
AU730328B2 (en) | 2001-03-01 |
FR2764681A1 (fr) | 1998-12-18 |
US6047562A (en) | 2000-04-11 |
FR2764681B1 (fr) | 1999-07-16 |
JPH1183310A (ja) | 1999-03-26 |
AU7005498A (en) | 1998-12-17 |
CA2240379A1 (fr) | 1998-12-13 |
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