FR2971169A1 - Oxy-combustion and purification of residual gas obtained from combustion and oxy-combustion, by partially removing oxygen contained in residual gas in presence of catalytic bed and providing oxygen-depleted residual gas to desiccation unit - Google Patents

Oxy-combustion and purification of residual gas obtained from combustion and oxy-combustion, by partially removing oxygen contained in residual gas in presence of catalytic bed and providing oxygen-depleted residual gas to desiccation unit Download PDF

Info

Publication number
FR2971169A1
FR2971169A1 FR1158506A FR1158506A FR2971169A1 FR 2971169 A1 FR2971169 A1 FR 2971169A1 FR 1158506 A FR1158506 A FR 1158506A FR 1158506 A FR1158506 A FR 1158506A FR 2971169 A1 FR2971169 A1 FR 2971169A1
Authority
FR
France
Prior art keywords
combustion
unit
depleted
residual gas
waste gas
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.)
Withdrawn
Application number
FR1158506A
Other languages
French (fr)
Inventor
Arthur Darde
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.)
Filing date
Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to FR1158506A priority Critical patent/FR2971169A1/en
Publication of FR2971169A1 publication Critical patent/FR2971169A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • 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
    • C01B21/0411—Chemical processing only
    • C01B21/0422—Chemical processing only by reduction
    • 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
    • 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
    • C01B21/0494—Combined chemical and physical processing
    • 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
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0257—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 characterised by the separated product stream separation of nitrogen
    • 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
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0266—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 characterised by the separated product stream separation of carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/208—Hydrocarbons
    • 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
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/104—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • 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
    • B01D53/002—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 condensation
    • 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
    • B01D53/22—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 diffusion
    • 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
    • B01D53/26—Drying gases or vapours
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/864—Removing carbon monoxide or hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0045—Oxygen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/005—Carbon monoxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0053—Hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0062—Water
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/40—Processes or apparatus using other separation and/or other processing means using hybrid system, i.e. combining cryogenic and non-cryogenic separation techniques
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/80—Processes or apparatus using other separation and/or other processing means using membrane, i.e. including a permeation step
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/82—Processes or apparatus using other separation and/or other processing means using a reactor with combustion or catalytic reaction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/70—Flue or combustion exhaust gas
    • 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/30—Compression of the feed stream
    • 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
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The process comprises partially removing oxygen contained in a residual gas (7) by combustion in presence of a catalytic bed in a combustion unit (23) fed by a fuel, providing oxygen-depleted residual gas to a desiccation unit (31) for partially removing water, and providing dried residual gas from the desiccation unit to a unit operating at a subambient temperature, where the combustion contains nitrogen (15-60 mole%), carbon dioxide, water (0.1-10 mole%), oxygen, hydrogen (less than 0.5 mole%), carbon monoxide (less than 0.5 mole%) and methane (less than 0.5 mole%). The process comprises partially removing oxygen contained in a residual gas (7) by combustion in presence of a catalytic bed in a combustion unit (23) fed by a fuel, providing oxygen-depleted residual gas to a desiccation unit (31) for partially removing water, providing dried residual gas from the desiccation unit to a unit operating at a subambient temperature or separating the residual gas for producing a fluid rich in carbon dioxide and nitrogen and a fluid depleted in carbon dioxide, and purifying the fluid depleted in carbon dioxide for producing a flow rich in nitrogen (43). The residual gas is: treated in a treatment unit provided in an upstream of the combustion unit for removing a part of water and/or for cooling and/or removing a contaminant; and compressed by a compressor provided in a downstream of the treatment unit and in the upstream of the combustion unit. The fluid depleted in carbon dioxide is purified by permeation for producing a flow rich in nitrogen and a flow depleted in nitrogen. The nitrogen-depleted flow is compressed by a compressor. An oxy-combustion boiler is fed by a flow containing oxygen (20-90 mole% or 30-80 mole%) and by combustion, and produces water vapor and/or electricity and residual gas. A rate of recirculation of residual gas towards the oxy-combustion is less than 60%.

Description

PROCEDE ET APPAREIL D'EPURATION D'UN GAZ RESIDUAIRE PROVENANT D'UNE COMBUSTION METHOD AND APPARATUS FOR PURIFYING A RESISTANT GAS FROM A COMBUSTION

La présente invention est relative à un procédé et à un appareil d'épuration d'un gaz 5 résiduaire provenant d'une combustion. The present invention relates to a method and apparatus for purifying a waste gas from combustion.

Il est nécessaire d'épurer les fumées résultant d'une combustion pour enlever le dioxyde de carbone qu'elles contiennent afin de le séquestrer. Il serait intéressant de pouvoir récupérer l'azote contenu dans les fumées comme produit. 10 Il est connu de WO-A-2010/139884 de séparer des fumées d'oxycombustion par distillation à basse température pour produire, en plus du dioxyde de carbone pur, de l'azote, de l'oxygène et de l'argon. Dans ce procédé, d'abord le dioxyde de carbone est séparé et ensuite le débit d'incondensables est séparé pour produire l'azote, l'oxygène et l'argon. Aucune séparation 15 d'oxygène n'est réalisée en amont de l'étape de séparation de dioxyde de carbone. Les fumées étant humides, il est également connu plusieurs méthodes de les sécher en amont de la distillation, certaines étant décrites dans « Development and comparison of different drying concepts for CCS techology» de Stamatov, TCCS-5,2009. Dans certains cas, où l'invention de la présente demande trouve une application 20 particulière, un procédé de combustion, par exemple une oxycombustion, produisant des fumées peut être alimentée par un débit d'oxygène impur, disponible sur le site. Un appareil de séparation d'air pour produire de l'azote comme produit principal peut produire un gaz résiduaire contenant entre 60 et 80% mol. d'oxygène. Ce gaz résiduaire peut servir pour alimenter la combustion. Par exemple, pour produire de l'électricité, l'oxygène impur peut 25 être brûlé avec un combustible carboné, du gaz naturel par exemple. Une utilisation possible des produits serait, par exemple, de les utiliser pour maintenir la pression dans des champs de pétrole ou de gaz. Le gaz résiduaire peut être séparé pour produire du dioxyde de carbone pur et de l'azote pur «50ppm Oz par exemple) Considérons un site industriel où de l'oxygène impur (contenant de l'ordre de 30% 30 d'azote) est disponible, comme sous-produit d'un processus industriel. Une unité va être dimensionnée pour brûler cet oxygène impur et le « transformer » en électricité et du COz. Le combustible carboné consommé pourrait être du gaz naturel. It is necessary to purify the fumes resulting from a combustion to remove the carbon dioxide they contain in order to sequester it. It would be interesting to be able to recover the nitrogen contained in the fumes as a product. It is known from WO-A-2010/139884 to separate oxycombustion fumes by low temperature distillation to produce, in addition to pure carbon dioxide, nitrogen, oxygen and argon. In this process, first the carbon dioxide is separated and then the incondensable flow is separated to produce nitrogen, oxygen and argon. No oxygen separation is performed upstream of the carbon dioxide separation step. Because the fumes are moist, several methods of drying them upstream of the distillation are also known, some of which are described in Stamatov's "Development and Comparison of Different Drying Concepts for CCS Technology", TCCS-5,2009. In some cases, where the invention of the present application finds particular application, a combustion process, for example oxyfuel combustion, producing fumes can be supplied by a flow of impure oxygen, available on the site. An air separation apparatus for producing nitrogen as the main product can produce a waste gas containing between 60 and 80 mol%. oxygen. This waste gas can be used to fuel combustion. For example, to produce electricity, impure oxygen can be burned with a carbonaceous fuel, for example natural gas. One possible use of the products would be, for example, to use them to maintain pressure in oil or gas fields. The waste gas can be separated to produce pure carbon dioxide and pure nitrogen "50ppm Oz for example. Consider an industrial site where impure oxygen (containing about 30% nitrogen) is available as a by-product of an industrial process. One unit will be sized to burn this impure oxygen and "transform" it into electricity and COz. The carbon fuel consumed could be natural gas.

Le cas de base serait de séparer Oz et Nz avant la combustion, donc en sortie du premier ASU produisant 1'02 impur. L'inconvénient est d'investir une unité de grande taille fonctionnant à -180°C. The basic case would be to separate Oz and Nz before the combustion, thus at the output of the first ASU producing impure O2. The disadvantage is to invest a large unit operating at -180 ° C.

L'unité considérée dans le cadre de l'invention sera une oxycombustion, de gaz naturel dans notre exemple. La haute teneur en azote comparée à ce que l'on voit habituellement (avec de l'oxygène à 85-97%) ne devrait pas avoir une grande importance au niveau de la chaudière car le taux de recirculation des fumées sera alors réduit, pour conserver le même ballast thermique. The unit considered in the context of the invention will be an oxycombustion of natural gas in our example. The high nitrogen content compared to what is usually seen (with 85-97% oxygen) should not be of great importance to the boiler because the rate of flue gas recirculation will be reduced. keep the same thermal ballast.

En sortie de l'unité d'oxycombustion, il y a classiquement de l'ordre de 1 à 5% d'oxygène dans le gaz résiduaire pour assurer une bonne combustion. Il est bien connu de séparer l'azote et l'oxygène du COz par distillation cryogénique. Les incondensables (et notamment Oz et N2) sont alors récupérés sous pression, en entraînant une proportion non négligeable de COz, dont la teneur dans les incondensables est typiquement de l'ordre de 20 à 30% selon la pression et la température de séparation. At the outlet of the oxycombustion unit, there is typically about 1 to 5% oxygen in the waste gas to ensure good combustion. It is well known to separate nitrogen and oxygen from CO 2 by cryogenic distillation. Incondensables (and in particular Oz and N2) are then recovered under pressure, resulting in a significant proportion of COz, whose content in the incondensables is typically of the order of 20 to 30% depending on the pressure and the separation temperature.

Il reste à purifier l'azote. La teneur résiduelle en COz dans les incondensables interdit la séparation cryogénique de l'azote et de l'oxygène : le COz gèlerait. It remains to purify the nitrogen. The residual COz content in the incondensables prohibits the cryogenic separation of nitrogen and oxygen: the COz would freeze.

Une pré-purification du COz par adsorbant (comme dans les dessiccations) n'est pas possible non plus car la teneur en COz dépasse les 5% habituellement considérés comme étant le maximum que l'on puisse traiter par adsorption. Pre-purification of CO 2 by adsorbent (as in desiccation) is not possible either because the CO 2 content exceeds the 5% usually considered the maximum that can be treated by adsorption.

Le procédé selon l'invention comprend l'étape de brûler l'oxygène excédentaire après la combustion, avant la dessiccation, sur un lit catalytique en injectant du combustible carboné. Le COz généré sera valorisé via la boite froide comme produit. Les incondensables de la boite froide seront alors constitués uniquement d'azote, d'argon, de COz et éventuellement de monoxyde de carbone et des excès éventuel du gaz réducteur (Hz par exemple) ayant servi à brûler les excédents d'oxygène. The method according to the invention comprises the step of burning the excess oxygen after combustion, before desiccation, on a catalytic bed by injecting carbonaceous fuel. The COz generated will be valued via the cold box as product. The incondensables of the cold box will then consist solely of nitrogen, argon, COz and possibly carbon monoxide and possible excess of the reducing gas (Hz for example) used to burn the excess oxygen.

L'eau générée par la combustion de l'oxygène sera éventuellement évacuée dans l'unité de dessiccation du gaz résiduaire L'énergie générée par la combustion pourrait être valorisée sous forme de chaleur : groupe frigorifique à absorption, chauffage de bâtiments, chauffage du gaz de régénération de la dessiccation, etc. The water generated by the combustion of the oxygen will possibly be evacuated in the unit of desiccation of the waste gas The energy generated by the combustion could be valorized in the form of heat: refrigerating unit with absorption, heating of buildings, heating of the gas regeneration of desiccation, etc.

L'unité de compression et de purification de dioxyde de carbone elle-même sera adaptée pour prendre en compte la forte teneur en azote. Ainsi, une membrane traitant les incondensables permettra de récupérer une grande partie du COz des incondensables à une pression inférieure, dans le perméat, et de le recycler dans le compresseur d'alimentation. Cela permet d'améliorer grandement le rendement COz et de purifier l'azote qui reste dans le résidu qui pourrait alors satisfaire les exigences essentiellement focalisées sur l'eau et l'oxygène. Une seconde boite froide pourrait être installée sur l'azote du résidu, après extraction du COz par adsorption, si la pureté en azote devait être plus poussée. The compression and purification unit of carbon dioxide itself will be adapted to take into account the high nitrogen content. Thus, a membrane treating incondensables will recover a large portion of COz incondensables at a lower pressure in the permeate, and recycle in the compressor. This greatly improves the COz efficiency and purifies the remaining nitrogen in the residue which could then meet the requirements essentially focused on water and oxygen. A second cold box could be installed on the nitrogen of the residue, after COz extraction by adsorption, if the purity in nitrogen was to be further.

Selon l'invention, il est prévu un procédé d'épuration d'un gaz résiduaire provenant d'une combustion contenant entre 5 et 80% mol. d'azote, du dioxyde de carbone, de l'eau, entre 0,1 et 10% mol. d'oxygène, moins que 0,5% mol d'hydrogène, moins que 0,5% mol de monoxyde de carbone et moins que 0,5% mol de méthane dans lequel i) on élimine au moins partiellement l'oxygène contenu dans le gaz résiduaire par combustion en présence d'un lit catalytique dans une unité de combustion alimentée par du combustible, en produisant un gaz résiduaire appauvri en oxygène, ii) on envoie le gaz résiduaire appauvri en oxygène à une unité de dessiccation pour éliminer au moins partiellement l'eau, iii) on envoie le gaz résiduaire séché de l'unité de dessiccation à une unité opérant à température subambiante où le gaz résiduaire est séparé pour produire un fluide riche en dioxyde de carbone et un fluide appauvri en dioxyde de carbone et enrichi en azote et iv) on épure le fluide appauvri en dioxyde de carbone pour produire un débit riche en azote. According to the invention, there is provided a method of cleaning a waste gas from a combustion containing between 5 and 80 mol%. nitrogen, carbon dioxide, water, between 0.1 and 10 mol%. oxygen, less than 0.5 mol% of hydrogen, less than 0.5 mol% of carbon monoxide and less than 0.5 mol% of methane in which i) at least partially eliminates the oxygen contained in the combustion waste gas in the presence of a catalyst bed in a fuel-fed combustion unit, producing an oxygen-depleted waste gas, ii) the oxygen-depleted waste gas is sent to a desiccation unit to eliminate at least one partially water, iii) the dried residual gas from the desiccation unit is sent to a unit operating at subambient temperature where the waste gas is separated to produce a carbon dioxide rich fluid and a carbon dioxide depleted fluid and enriched with nitrogen and iv) the depleted fluid is purified with carbon dioxide to produce a nitrogen-rich flow.

Selon d'autres objets facultatifs : - le gaz résiduaire est traité dans une unité de traitement en amont de l'unité de 30 combustion pour éliminer une partie de l'eau qu'il contient et/ou pour le refroidir et/ou pour éliminer un contaminant qu'il contient. - le gaz résiduaire est comprimé par un compresseur en aval de l'unité de traitement et en amont de l'unité de combustion. - le fluide appauvri en dioxyde de carbone est épuré par perméation pour produire un débit riche en azote et un débit appauvri en azote. - le débit appauvri en azote est envoyé en amont de l'unité opérant à température subambiante où est séparé une partie du CO2 - le débit appauvri en azote est comprimé par le compresseur. - le gaz résiduaire contient entre 15 et 60% mol. de dioxyde de carbone. - le gaz résiduaire est le seul débit contenant de l'oxygène envoyé à la combustion. Selon un autre objet de l'invention, il est prévu un procédé d'oxycombustion et d'épuration d'un gaz résiduaire issu de l'oxycombustion dans lequel le gaz résiduaire est épuré tel que décrit ci-dessus et dans lequel une chaudière d'oxycombustion est alimentée par un débit contenant entre 21 et 90 % mol d'oxygène, voire entre 30% mol. et 80% mol. d'oxygène et par un combustible, la chaudière d'oxycombustion produisant de la vapeur d'eau et/ou de l'électricité et le gaz résiduaire. Le débit contenant entre 60 et 80% mol d'oxygène provient éventuellement d'un appareil de séparation d'air. Le taux de recirculation de gaz résiduaire vers l'oxycombustion est de préférence inférieur à 60%. L'invention sera décrite en plus de détail en se référant à la figure, qui représente un procédé selon l'invention. According to other optional objects: the waste gas is treated in a treatment unit upstream of the combustion unit in order to eliminate part of the water it contains and / or to cool it and / or to eliminate a contaminant it contains. the waste gas is compressed by a compressor downstream of the treatment unit and upstream of the combustion unit. the fluid depleted in carbon dioxide is purified by permeation to produce a nitrogen-rich flow rate and a nitrogen-depleted flow rate. - The nitrogen depleted flow is sent upstream of the unit operating at subambient temperature where is separated a portion of the CO2 - depleted nitrogen flow is compressed by the compressor. the waste gas contains between 15 and 60 mol%. of carbon dioxide. - the waste gas is the only flow containing oxygen sent to the combustion. According to another object of the invention, there is provided a method for oxycombustion and purification of a waste gas from the oxycombustion in which the waste gas is purified as described above and in which a boiler of The oxycombustion is fed with a flow rate containing between 21 and 90 mol% of oxygen, and even between 30 mol%. and 80 mol%. oxygen and a fuel, the oxy-fuel boiler producing water vapor and / or electricity and the waste gas. The flow rate containing between 60 and 80 mol% of oxygen possibly comes from an air separation apparatus. The rate of recirculation of waste gas to the oxycombustion is preferably less than 60%. The invention will be described in more detail with reference to the figure, which shows a method according to the invention.

De l'oxygène impur 3 provenant d'un appareil de séparation d'air est envoyé à une chaudière d'oxycombustion 1 produisant de l'énergie 4 sous forme de vapeur d'eau et/ ou d'électricité. L'oxygène 3 contient entre 21 et 90% d'oxygène, voire entre 60 et 80% d'oxygène. La chaudière est également alimentée par un combustible carboné 5, par exemple du charbon ou du gaz naturel. La chaudière 1 peut être remplacée et/ou complétée par une autre source de gaz résiduaire 7, par exemple une unité sidérurgique... Le gaz résiduaire est envoyé à une unité de traitement 11, éventuellement après recirculation d'une partie 9 du gaz vers la chaudière. Le débit 9 constitue au plus 60% du débit 7 sortant de la chaudière 1. Ainsi moins de gaz résiduaire est recyclé que dans les procédés classiques. Le gaz résiduaire contient entre 5 et 80% mol. d'azote, du dioxyde de carbone, de l'eau, entre 0,1 et 10% mol. d'oxygène, moins que 0,5% mol d'hydrogène, moins que 0,5% mol de monoxyde de carbone et moins que 0,5% mol de méthane. Il peut contenir entre 15 et 60% de dioxyde de carbone. Impure oxygen 3 from an air separation apparatus is sent to an oxy-fuel boiler 1 producing energy 4 in the form of water vapor and / or electricity. The oxygen 3 contains between 21 and 90% of oxygen, or even between 60 and 80% of oxygen. The boiler is also fed with a carbon fuel 5, for example coal or natural gas. The boiler 1 may be replaced and / or supplemented by another source of waste gas 7, for example an iron and steel unit ... The waste gas is sent to a treatment unit 11, possibly after recirculation of a portion 9 of the gas to Boiler. The flow rate 9 constitutes at most 60% of the flow rate 7 leaving the boiler 1. Thus, less waste gas is recycled than in the conventional processes. The waste gas contains between 5 and 80 mol%. nitrogen, carbon dioxide, water, between 0.1 and 10 mol%. of oxygen, less than 0.5 mol% of hydrogen, less than 0.5 mol% of carbon monoxide and less than 0.5 mol% of methane. It can contain between 15 and 60% of carbon dioxide.

L'unité de traitement 11 produit éventuellement de l'eau condensée 13 qui peut être réutilisée comme appoint d'eau. L'unité de traitement 11 est une unité où s'effectue une condensation de l'eau dans le gaz résiduaire 1 et/ou un refroidissement et/ou une épuration de SOx, par exemple par lavage à l'eau. The treatment unit 11 optionally produces condensed water 13 which can be reused as a make-up of water. The treatment unit 11 is a unit where condensation of the water in the waste gas 1 and / or cooling and / or purification of SOx takes place, for example by washing with water.

Si sa pression est insuffisante, le débit épuré 17 produit par l'unité de traitement 11 est comprimé dans un compresseur 15, pour produire un débit de gaz résiduaire 19. Sinon, le débit épuré peut être envoyé directement à l'unité de combustion. Le gaz 19 est envoyé à une unité de combustion d'oxygène 23 sur un lit catalytique, par exemple dopé au platine ou au palladium. De préférence, aucun débit oxygéné n'est envoyé à la combustion à part le débit 19. Du combustible 21 est envoyé à l'unité de combustion 23. La chaleur produite 25 peut être valorisée sur le site ou utilisée (27) pour la régénération de l'unité de dessiccation 31. L'unité de combustion 23 produit un débit 29 contenant des traces d'oxygène au niveau du ppm, entre 5 et 80 % mol d'azote et le reste en dioxyde de carbone, argon et eau. Le débit 29 contient plus que 15% mol. de dioxyde de carbone. Le débit peut aussi contenir des traces du combustible mis en excès pour éliminer l'oxygène, ou des résidus de combustion (Hz, CO, CH4, éthane, propane, butane, etc.) Une unité de dessiccation 31 sert à enlever le reste de l'eau pour envoyer un débit sec 33 à une unité de séparation de dioxyde de carbone 35 par distillation à basse température. If its pressure is insufficient, the purified flow 17 produced by the processing unit 11 is compressed in a compressor 15, to produce a flow of waste gas 19. Otherwise, the purified flow can be sent directly to the combustion unit. The gas 19 is sent to an oxygen combustion unit 23 on a catalytic bed, for example doped platinum or palladium. Preferably, no oxygenated flow is sent to the combustion other than the flow 19. Fuel 21 is sent to the combustion unit 23. The heat produced 25 can be valorized on the site or used (27) for the regeneration of the drying unit 31. The combustion unit 23 produces a flow rate 29 containing traces of oxygen at the ppm, between 5 and 80 mol% of nitrogen and the remainder of carbon dioxide, argon and water. The flow 29 contains more than 15 mol%. of carbon dioxide. The flow may also contain traces of the excess fuel to remove oxygen, or combustion residues (Hz, CO, CH4, ethane, propane, butane, etc.) A desiccant unit 31 serves to remove the remainder of the fuel. water to send a dry flow rate to a carbon dioxide separation unit by low temperature distillation.

L'unité de séparation 35 produit un débit de dioxyde de carbone pur 35 et un gaz 39 contenant de l'azote et du dioxyde de carbone. Le gaz 39 est séparé par perméation dans l'unité 31 pour produire un produit 43 riche en azote et un perméat 45 enrichi en dioxyde de carbone 45 qui est recyclé au compresseur 15 pour être envoyé à la combustion dans l'unité 23. The separation unit 35 produces a flow rate of pure carbon dioxide and a gas 39 containing nitrogen and carbon dioxide. The gas 39 is permeated in the unit 31 to produce a nitrogen rich product 43 and a carbon dioxide enriched permeate 45 which is recycled to the compressor 15 for combustion in the unit 23.

Claims (10)

REVENDICATIONS1. Procédé d'épuration d'un gaz résiduaire (7) provenant d'une combustion (1) contenant entre 5 et 80% mol. d'azote, du dioxyde de carbone, de l'eau, entre 0,1 et 10% mol. d'oxygène, moins que 0,5% mol d'hydrogène, moins que 0,5% mol de monoxyde de carbone et moins que 0,5% mol de méthane dans lequel i) on élimine au moins partiellement l'oxygène contenu dans le gaz résiduaire par combustion en présence d'un lit catalytique dans une unité de combustion (23) alimentée par du combustible (21), en produisant un gaz résiduaire appauvri en oxygène (29), ii) on envoie le gaz résiduaire appauvri en oxygène à une unité de dessiccation (31) pour éliminer au moins partiellement l'eau, iii) on envoie le gaz résiduaire séché de l'unité de dessiccation à une unité (37) opérant à température subambiante où le gaz résiduaire est séparé pour produire un fluide riche en dioxyde de carbone et un fluide appauvri en dioxyde de carbone et enrichi en azote et iv) on épure le fluide appauvri en dioxyde de carbone (39) pour produire un débit riche en azote (43). REVENDICATIONS1. Process for the purification of a waste gas (7) from a combustion (1) containing between 5 and 80 mol% nitrogen, carbon dioxide, water, between 0.1 and 10 mol%. oxygen, less than 0.5 mol% of hydrogen, less than 0.5 mol% of carbon monoxide and less than 0.5 mol% of methane in which i) at least partially eliminates the oxygen contained in the combustion waste gas in the presence of a catalytic bed in a combustion unit (23) supplied with fuel (21), producing a waste gas depleted in oxygen (29), ii) the oxygen-depleted waste gas is sent to a desiccation unit (31) for at least partially removing the water, iii) the dried waste gas from the desiccation unit is sent to a unit (37) operating at subambient temperature where the waste gas is separated to produce a a fluid rich in carbon dioxide and a fluid depleted of carbon dioxide and enriched in nitrogen and iv) the depleted fluid is purified to carbon dioxide (39) to produce a nitrogen-rich flow (43). 2. Procédé selon la revendication 1, dans lequel le gaz résiduaire est traité dans une unité de traitement (11) en amont de l'unité de combustion (23) pour éliminer une partie de l'eau qu'il contient et/ou pour le refroidir et/ou pour éliminer un contaminant qu'il contient. The method according to claim 1, wherein the waste gas is treated in a treatment unit (11) upstream of the combustion unit (23) to remove a portion of the water contained therein and / or to cool it and / or to remove a contaminant it contains. 3. Procédé selon la revendication 2, dans lequel le gaz résiduaire (17) est comprimé par un compresseur (15) en aval de l'unité de traitement (11) et en amont de l'unité de combustion (23). 3. Method according to claim 2, wherein the waste gas (17) is compressed by a compressor (15) downstream of the processing unit (11) and upstream of the combustion unit (23). 4. Procédé selon l'une des revendications précédentes, dans lequel le fluide appauvri en dioxyde de carbone (39) est épuré par perméation pour produire le débit riche en azote (43) et un débit appauvri en azote (45).30 The method according to one of the preceding claims, wherein the carbon dioxide depleted fluid (39) is purified by permeation to produce the nitrogen-rich flow (43) and a nitrogen-depleted flow (45). 5. Procédé selon la revendication 4, dans lequel le débit appauvri en azote (45) est envoyé en amont de l'unité opérant à température subambiante où est séparé une partie du CO2 5. Process according to claim 4, in which the nitrogen-depleted flow rate (45) is sent upstream of the unit operating at subambient temperature where a part of the CO2 is separated. 6. Procédé selon la revendication 5, dans lequel le débit appauvri en azote (45) est comprimé par le compresseur (15). The method of claim 5, wherein the nitrogen depleted flow rate (45) is compressed by the compressor (15). 7. Procédé selon l'une des revendications précédentes, dans lequel le gaz résiduaire (7, 17, 19) contient entre 15 et 60% mol. de dioxyde de carbone. 7. Method according to one of the preceding claims, wherein the waste gas (7, 17, 19) contains between 15 and 60 mol%. of carbon dioxide. 8. Procédé selon l'une des revendications précédentes, dans lequel le gaz résiduaire (19) est le seul débit contenant de l'oxygène envoyé à la combustion. 8. Method according to one of the preceding claims, wherein the waste gas (19) is the only flow containing oxygen sent to the combustion. 9. Procédé d'oxycombustion et d'épuration d'un gaz résiduaire issu de 15 l'oxycombustion dans lequel le gaz résiduaire est épuré selon une des revendications précédentes, et dans lequel une chaudière d'oxycombustion (1) est alimentée par un débit (3) contenant entre 21 et 90 % mol d'oxygène, voire entre 30% mol. et 80% mol. d'oxygène et par un combustible (5), la chaudière d'oxycombustion produisant de la vapeur d'eau et/ou de l'électricité (4) et le gaz résiduaire (7). 20 9. Process for the oxycombustion and purification of a waste gas resulting from oxy-fuel combustion in which the waste gas is purified according to one of the preceding claims, and in which an oxy-fuel combustion boiler (1) is fed with a flow rate. (3) containing between 21 and 90 mol% of oxygen, or even between 30 mol%. and 80 mol%. oxygen and a fuel (5), the oxy-fuel combustion boiler producing water vapor and / or electricity (4) and the waste gas (7). 20 10. Procédé selon la revendication 9, dans lequel le taux de recirculation de gaz résiduaire vers l'oxycombustion est inférieur à 60%.10 The process according to claim 9, wherein the rate of recirculation of waste gas to oxy-fuel combustion is less than 60%.
FR1158506A 2011-09-23 2011-09-23 Oxy-combustion and purification of residual gas obtained from combustion and oxy-combustion, by partially removing oxygen contained in residual gas in presence of catalytic bed and providing oxygen-depleted residual gas to desiccation unit Withdrawn FR2971169A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1158506A FR2971169A1 (en) 2011-09-23 2011-09-23 Oxy-combustion and purification of residual gas obtained from combustion and oxy-combustion, by partially removing oxygen contained in residual gas in presence of catalytic bed and providing oxygen-depleted residual gas to desiccation unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1158506A FR2971169A1 (en) 2011-09-23 2011-09-23 Oxy-combustion and purification of residual gas obtained from combustion and oxy-combustion, by partially removing oxygen contained in residual gas in presence of catalytic bed and providing oxygen-depleted residual gas to desiccation unit

Publications (1)

Publication Number Publication Date
FR2971169A1 true FR2971169A1 (en) 2012-08-10

Family

ID=45048021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1158506A Withdrawn FR2971169A1 (en) 2011-09-23 2011-09-23 Oxy-combustion and purification of residual gas obtained from combustion and oxy-combustion, by partially removing oxygen contained in residual gas in presence of catalytic bed and providing oxygen-depleted residual gas to desiccation unit

Country Status (1)

Country Link
FR (1) FR2971169A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014064350A1 (en) * 2012-10-25 2014-05-01 L'air Liquide,Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and unit for removing oxygen from a gas flow comprising co2
FR3037505A1 (en) * 2015-06-19 2016-12-23 Air Liquide METHOD AND SYSTEM FOR RECOVERING HYDROCARBONS USING CO2-RICH INDUSTRIAL FUMES
FR3037504A1 (en) * 2015-06-19 2016-12-23 Air Liquide METHOD AND SYSTEM FOR RECOVERING HYDROCARBONS USING CO2-RICH INDUSTRIAL FUMES
FR3037503A1 (en) * 2015-06-19 2016-12-23 Air Liquide METHOD AND SYSTEM FOR RECOVERING HYDROCARBONS USING CO2-RICH INDUSTRIAL FUMES

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191216855A (en) * 1912-07-19 1913-07-21 John Harger Improvements in the Production of Nitrogen from Products of Combustion.
US1154171A (en) * 1913-04-07 1915-09-21 American Nitro Products Company Process of making nitrogen and carbon dioxid.
FR1330141A (en) * 1960-11-16 1963-06-21 Scient Design Co Process for recovering oxygen and nitrogen contained in a gas mixture
US4895710A (en) * 1986-01-23 1990-01-23 Helge G. Gran Nitrogen injection
JPH05116915A (en) * 1991-10-30 1993-05-14 Mitsui Eng & Shipbuild Co Ltd Production of gaseous nitrogen
EP0603767A1 (en) * 1992-12-22 1994-06-29 Air Products And Chemicals, Inc. Deoxygenation of non-cryogenically produced nitrogen with a hydrocarbon
FR2823449A1 (en) * 2001-04-13 2002-10-18 Inst Francais Du Petrole Process for eliminating oxygen from a gas containing carbon dioxide so an industrial exhaust gas can be injected into an oil well to assist recovering of oil

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191216855A (en) * 1912-07-19 1913-07-21 John Harger Improvements in the Production of Nitrogen from Products of Combustion.
US1154171A (en) * 1913-04-07 1915-09-21 American Nitro Products Company Process of making nitrogen and carbon dioxid.
FR1330141A (en) * 1960-11-16 1963-06-21 Scient Design Co Process for recovering oxygen and nitrogen contained in a gas mixture
US4895710A (en) * 1986-01-23 1990-01-23 Helge G. Gran Nitrogen injection
JPH05116915A (en) * 1991-10-30 1993-05-14 Mitsui Eng & Shipbuild Co Ltd Production of gaseous nitrogen
EP0603767A1 (en) * 1992-12-22 1994-06-29 Air Products And Chemicals, Inc. Deoxygenation of non-cryogenically produced nitrogen with a hydrocarbon
FR2823449A1 (en) * 2001-04-13 2002-10-18 Inst Francais Du Petrole Process for eliminating oxygen from a gas containing carbon dioxide so an industrial exhaust gas can be injected into an oil well to assist recovering of oil

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014064350A1 (en) * 2012-10-25 2014-05-01 L'air Liquide,Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and unit for removing oxygen from a gas flow comprising co2
FR2997311A1 (en) * 2012-10-25 2014-05-02 Air Liquide METHOD AND INSTALLATION FOR REMOVING OXYGEN FROM A GASEOUS FLOW COMPRISING CO2
FR3037505A1 (en) * 2015-06-19 2016-12-23 Air Liquide METHOD AND SYSTEM FOR RECOVERING HYDROCARBONS USING CO2-RICH INDUSTRIAL FUMES
FR3037504A1 (en) * 2015-06-19 2016-12-23 Air Liquide METHOD AND SYSTEM FOR RECOVERING HYDROCARBONS USING CO2-RICH INDUSTRIAL FUMES
FR3037503A1 (en) * 2015-06-19 2016-12-23 Air Liquide METHOD AND SYSTEM FOR RECOVERING HYDROCARBONS USING CO2-RICH INDUSTRIAL FUMES

Similar Documents

Publication Publication Date Title
EP1869385B1 (en) Integrated method and installation for cryogenic adsorption and separation for producing co2
FR2872890A1 (en) Integrated process for adsorption and cryogenic separation for the production of carbon dioxide from sources containing low percentages of carbon dioxide
CA2762237A1 (en) Method and apparatus for producing at least one argon-enriched fluid and at least one oxygen-enriched fluid from a residual fluid
EP3713870A2 (en) Process and device for the combined production of hydrogen and carbon dioxide from a hydrocarbon mixture
WO2016174317A1 (en) Production of helium from a gas stream containing hydrogen
CA3024382A1 (en) Process for cryogenic separation of a feed stream containing methane and air gases, facility for producing biomethane by purification of biogases derived from non-hazardous waste storage facilities (nhwsf) implementing the process
FR2971169A1 (en) Oxy-combustion and purification of residual gas obtained from combustion and oxy-combustion, by partially removing oxygen contained in residual gas in presence of catalytic bed and providing oxygen-depleted residual gas to desiccation unit
FR2940414A1 (en) PROCESS FOR CAPTURING CARBON DIOXIDE BY CRYO-CONDENSATION
FR2929686A1 (en) APPARATUS AND METHOD FOR OXYCOMBUSTION WITH CO2 CAPTURE.
WO2012164220A2 (en) Apparatus and integrated process for separating a mixture of carbon dioxide and at least one other gas and for separating air by cryogenic distillation
CA2928640A1 (en) Apparatus and method for compressing and/or cooling and purifying a carbon dioxide rich gas containing water
WO2012107688A2 (en) Process and device for the cryogenic separation of a methane-rich stream
FR3105014A1 (en) Process and apparatus for separating carbon dioxide from a waste gas from a fluidized bed catalytic cracking (FCC) plant
CA2789089A1 (en) Method and equipment for treating co2-rich smoke
FR2884304A1 (en) Carbon dioxide separating method for iron and steel industry, involves receiving flow enriched in carbon dioxide from absorption unit, sending it towards homogenization unit and subjecting carbon dioxide to intermediate compression stage
FR2949978A1 (en) PROCESS FOR PURIFYING A GASEOUS FLOW COMPRISING MERCURY
WO2012107667A2 (en) Process and device for the cryogenic separation of a methane-rich stream
WO2012114118A1 (en) Process and apparatus for purification of carbon dioxide
GB2489396A (en) Carbon dioxide purification
EP2964571A1 (en) Method and apparatus for producing carbon dioxide and hydrogen
FR2823449A1 (en) Process for eliminating oxygen from a gas containing carbon dioxide so an industrial exhaust gas can be injected into an oil well to assist recovering of oil
EP2652291B1 (en) Method and system for integrated compressing air and production of a carbon dioxide rich fluid
EP3471858A1 (en) Apparatus and method for separating co2 at low temperature comprising a step of separation by permeation
EP4275784A1 (en) Process and apparatus for purifying a gas stream containing at least one nitrogen oxide
FR2997866A3 (en) Purification of carbon dioxide from e.g. synthesis gas, from gas turbine in integrated gasification combined cycle-type thermal power plant, comprises carrying out partial condensation of feed gas followed by purification and distillation

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20140530