FR2990749A1 - METHOD AND APPARATUS FOR BREATHING A CO2-RICH FLUID - Google Patents
METHOD AND APPARATUS FOR BREATHING A CO2-RICH FLUID Download PDFInfo
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- FR2990749A1 FR2990749A1 FR1254468A FR1254468A FR2990749A1 FR 2990749 A1 FR2990749 A1 FR 2990749A1 FR 1254468 A FR1254468 A FR 1254468A FR 1254468 A FR1254468 A FR 1254468A FR 2990749 A1 FR2990749 A1 FR 2990749A1
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- pressure
- carbon dioxide
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- liquid
- rich
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- 239000012530 fluid Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000029058 respiratory gaseous exchange Effects 0.000 title 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 126
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 61
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 53
- 238000011282 treatment Methods 0.000 claims abstract description 11
- 238000013022 venting Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 28
- 230000002051 biphasic effect Effects 0.000 claims description 8
- 229910018888 PSV2 Inorganic materials 0.000 claims description 5
- 229910018904 PSV1 Inorganic materials 0.000 claims description 4
- 239000012263 liquid product Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims 2
- 230000005514 two-phase flow Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 21
- 235000011089 carbon dioxide Nutrition 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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
- F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
- F25J3/063—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream
- F25J3/067—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream separation of carbon dioxide
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/0095—Oxides of carbon, e.g. CO2
-
- 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
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0244—Operation; Control and regulation; Instrumentation
- F25J1/0256—Safety aspects of operation
-
- 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
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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
- F25J3/0295—Start-up or control of the process; Details of the apparatus used, e.g. sieve plates, packings
-
- 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
- F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
- F25J3/0695—Start-up or control of the process; Details of the apparatus used
-
- 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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/04—Recovery of liquid products
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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
- F25J2270/00—Refrigeration techniques used
- F25J2270/02—Internal refrigeration with liquid vaporising loop
-
- 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
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/12—Particular process parameters like pressure, temperature, ratios
-
- 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
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/62—Details of storing a fluid in a tank
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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
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/90—Details about safety operation of the installation
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Separation By Absorption (AREA)
- Carbon And Carbon Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Dans un procédé de mise à l'air d'un fluide riche en dioxyde de carbone, une unité de traitement (3) produit au moins un fluide riche en dioxyde de carbone (7, 9, 11) à une première pression, le fluide riche en dioxyde de carbone est détendu dans une vanne (PSV) jusqu'à une deuxième pression pour produire un débit biphasique, le débit biphasique est envoyé à la deuxième pression à une capacité (15) et un gaz (17) provenant de la capacité est envoyé à l'atmosphère sous forme gazeuse après avoir été détendu à la pression atmosphérique.In a method of venting a fluid rich in carbon dioxide, a treatment unit (3) produces at least one carbon dioxide-rich fluid (7, 9, 11) at a first pressure, the fluid rich in carbon dioxide is expanded in a valve (PSV) to a second pressure to produce a two-phase flow, the two-phase flow is sent at the second pressure to a capacity (15) and a gas (17) from the capacity is sent to the atmosphere in gaseous form after being vented to atmospheric pressure.
Description
La présente invention est relative à un procédé et à un appareil de mise à l'air d'un fluide riche en dioxyde de carbone. Un fluide riche en dioxyde de carbone contient au moins 95% de dioxyde de carbone, voire au moins 96% de dioxyde de carbone, tous les pourcentages relatifs à des puretés dans ce document étant des pourcentages molaires. The present invention relates to a method and apparatus for venting a fluid rich in carbon dioxide. A carbon dioxide-rich fluid contains at least 95% carbon dioxide, or even at least 96% carbon dioxide, all percentages relating to purities in this document being molar percentages.
Il est connu d'épurer un débit contenant du dioxyde de carbone afin de séquestrer le dioxyde de carbone qu'il contient, par différents moyens, par exemple la distillation à basse température, le lavage aux amines ou la perméation. Il est également connu de liquéfier un gaz riche en dioxyde de carbone aux procédés de capture de CO2 ainsi qu'aux appareils de liquéfaction de 002. Cette liquéfaction peut être précédée d'un ou plusieurs traitements des fumées (ou gaz de synthèse) par des méthodes de séparation physique et/ou chimique. Dans ces unités d'épuration et/ou de liquéfaction et d'autres unités encore produisant un débit riche en dioxyde de carbone, afin de protéger les équipements mais également réduire les coûts de ces derniers (par minimisation de la pression de fonctionnement par exemple), il est fréquent d'installer au moins une soupape de sécurité, capable d'évacuer un débit et/ou pression de gaz et/ou de liquide trop importants. Cependant lors de la détente de ce gaz (ou liquide) dont la composition est riche en 002, il est possible de former de la neige carbonique à pression atmosphérique. Le graphique de la Figure 1 illustre, pour du CO2 gazeux pur, la pression à partir de laquelle on observe la formation de neige carbonique à la pression atmosphérique. Il faut noter que pour la détente d'un liquide riche en CO2 dans une soupape, la formation de neige carbonique est observée quelle que soit la pression initiale. It is known to purify a flow containing carbon dioxide in order to sequester the carbon dioxide that it contains, by various means, for example low temperature distillation, amine washing or permeation. It is also known to liquefy a gas rich in carbon dioxide in CO2 capture processes as well as to liquefaction apparatus of 002. This liquefaction may be preceded by one or more treatments of the fumes (or synthesis gas) by physical and / or chemical separation methods. In these purification and / or liquefaction units and other units still producing a flow rich in carbon dioxide, in order to protect the equipment but also reduce the costs thereof (by minimizing the operating pressure for example) , it is common to install at least one safety valve, capable of evacuating a flow rate and / or pressure of too much gas and / or liquid. However during the relaxation of this gas (or liquid) whose composition is rich in 002, it is possible to form dry ice at atmospheric pressure. The graph of Figure 1 illustrates, for pure gaseous CO2, the pressure from which the formation of dry ice at atmospheric pressure is observed. It should be noted that for the relaxation of a CO2-rich liquid in a valve, the formation of dry ice is observed regardless of the initial pressure.
Une première solution envisagée consiste à réchauffer le gaz ou liquide avant sa détente à la pression atmosphérique pour une pression initiale donnée, dépendante de la quantité d'impuretés présente. Par exemple, le gaz ou le liquide à rejeter peut être réchauffé dans un serpentin placé dans une piscine ou bien dans une tour atmosphérique ou réchauffé dans un vaporiseur. Cependant, cette première solution nécessite l'installation de conduites supplémentaires (pour le cas du serpentin immergé dans une tour évaporative) et de la vapeur (ou électricité) disponible (cas sans tour évaporative). Cette quantité de chaleur (sous forme vapeur ou autre) devient importante dans le cas de la détente d'un liquide riche en CO2. Ainsi la présente invention propose comme alternative la mise en place d'une capacité sous pression où la pression partielle du dioxyde de carbone est inférieure à 60 bar absolus de préférence 44 bar absolus et supérieure à 5 bar absolus de préférence 5,3 bar absolus. La pression de la capacité est idéalement supérieure à la pression la plus basse du CO2 dans le procédé produisant le gaz résiduaire à rejeter, afin de pouvoir réutiliser le CO2 liquide stocké dans cette capacité sous pression dans une phase de démarrage. Cette capacité permet ainsi d'étager cette détente et de retenir le liquide, alors que le gaz généré est, quant à lui, détendu à l'atmosphère sans risque de formation de neige carbonique. A first solution envisaged is to heat the gas or liquid before expansion at atmospheric pressure for a given initial pressure, depending on the amount of impurities present. For example, the gas or liquid to be discharged may be reheated in a coil placed in a pool or in an atmospheric tower or heated in a vaporizer. However, this first solution requires the installation of additional pipes (for the case of the coil immersed in an evaporative tower) and steam (or electricity) available (case without evaporative tower). This amount of heat (in vapor or other form) becomes important in the case of the relaxation of a CO2-rich liquid. Thus the present invention proposes as an alternative the implementation of a pressure capacity where the partial pressure of the carbon dioxide is less than 60 bar absolute, preferably 44 bar absolute and greater than 5 bar absolute, preferably 5.3 bar absolute. The pressure of the capacity is ideally greater than the lowest CO2 pressure in the process producing the waste gas to be discharged, in order to be able to reuse the liquid CO2 stored in this capacity under pressure in a starting phase. This capacity thus allows this relaxation to be staggered and the liquid to be retained, while the gas generated is, in turn, relaxed in the atmosphere without the risk of formation of dry ice.
On pourra par exemple dans le cas d'une unité de liquéfaction du CO2 utiliser un stockage comme capacité sous pression. Selon un objet de l'invention, il est prévu un procédé de mise à l'air d'un fluide riche en dioxyde de carbone dans lequel une unité de traitement produit au moins un fluide riche en dioxyde de carbone à une première pression, le fluide riche en dioxyde de carbone est détendu dans une vanne jusqu'à une deuxième pression pour produire un débit biphasique, le débit biphasique est envoyé à la deuxième pression à une capacité et un gaz provenant de la capacité est envoyé à l'atmosphère sous forme gazeuse après avoir été détendu à la pression atmosphérique. For example, in the case of a CO2 liquefaction unit, a storage can be used as a pressure capacity. According to one object of the invention, there is provided a method of venting a fluid rich in carbon dioxide in which a treatment unit produces at least one fluid rich in carbon dioxide at a first pressure, the fluid rich in carbon dioxide is expanded in a valve to a second pressure to produce a biphasic flow, the biphasic flow is sent at the second pressure to a capacity and a gas from the capacity is sent to the atmosphere in form gas after being relaxed at atmospheric pressure.
Eventuellement au moins un premier fluide riche en dioxyde de carbone ayant une première pureté en dioxyde de carbone et/ou étant produit à la première pression est détendu dans une première vanne jusqu'à la deuxième pression et un deuxième fluide riche en dioxyde de carbone ayant une deuxième pureté en dioxyde de carbone et/ou étant produit à la première pression ou une pression différente de la première pression est détendue dans une deuxième vanne et envoyé à la capacité. Le liquide de la capacité peut être renvoyé à l'unité de traitement. Un liquide riche en dioxyde de carbone de l'unité de traitement peut être envoyé à la capacité où il est stocké et un liquide de la capacité est soutiré comme produit liquide. Optionally at least one first carbon dioxide rich fluid having a first purity of carbon dioxide and / or being produced at the first pressure is expanded in a first valve to the second pressure and a second carbon dioxide rich fluid having a second purity of carbon dioxide and / or being produced at the first pressure or a pressure different from the first pressure is expanded in a second valve and sent to the capacity. The liquid of the capacity can be returned to the processing unit. A carbon dioxide-rich liquid from the process unit may be sent to the capacity where it is stored and a liquid of the capacity is withdrawn as a liquid product.
La capacité peut opérer à une pression telle que la pression partielle de dioxyde de carbone est supérieure à 5,3 bar absolus. La capacité peut opérer à une pression telle que la pression partielle de dioxyde de carbone est inférieure à 60 bar absolus. La capacité peut opérer ) une pression telle que la pression partielle de dioxyde de carbone est à entre 5,3 bar absolus et 44 bar absolus. L'unité de traitement peut produire un gaz contenant de l'oxygène, de l'azote, de l'argon, du monoxyde de carbone, de l'hydrogène ou un gaz ou un liquide riche en dioxyde de carbone ou tout composé présent dans le mélange à séparer sous forme gaz ou liquide. The capacity can operate at a pressure such that the partial pressure of carbon dioxide is greater than 5.3 bar absolute. The capacity can operate at a pressure such that the partial pressure of carbon dioxide is less than 60 bar absolute. The capacity can operate at a pressure such that the partial pressure of carbon dioxide is between 5.3 bar absolute and 44 bar absolute. The treatment unit can produce a gas containing oxygen, nitrogen, argon, carbon monoxide, hydrogen or a gas or a liquid rich in carbon dioxide or any compound present in the mixture to be separated in gas or liquid form.
Le fluide riche en dioxyde de carbone contient au moins 95% de dioxyde de carbone. Selon un autre objet de l'invention, il est prévu un appareil de mise à l'air d'un fluide riche en dioxyde de carbone dans lequel une unité de traitement produit au moins un fluide riche en dioxyde de carbone à une première pression comprenant une vanne de détente, une conduite pour envoyer le fluide riche en dioxyde de carbone à la vanne pour le détendre jusqu'à une deuxième pression pour produire un débit biphasique, une capacité, une conduite pour envoyer le débit biphasique de la vanne à la deuxième pression à la capacité et des moyens de détente d'un gaz provenant de la capacité reliés à l'atmosphère pour rejeter le gaz à l'atmosphère sous forme gazeuse après avoir été détendu à la pression atmosphérique.The fluid rich in carbon dioxide contains at least 95% carbon dioxide. According to another object of the invention, there is provided an apparatus for venting a fluid rich in carbon dioxide in which a treatment unit produces at least one fluid rich in carbon dioxide at a first pressure comprising an expansion valve, a conduit for sending the carbon dioxide-rich fluid to the valve to release it to a second pressure to produce a two-phase flow, a capacity, a pipe to send the biphasic flow of the valve to the second pressure to the capacity and means for expanding a gas from the capacity connected to the atmosphere to discharge the gas to the gaseous atmosphere after being vented to atmospheric pressure.
2 99074 9 4 L'appareil peut comprendre des moyens pour envoyer un liquide de la capacité à l'unité de traitement. L'appareil peut comprendre des moyens pour envoyer un liquide de l'unité de traitement à la capacité et des moyens pour soutirer un liquide de la capacité 5 comme produit liquide. L'invention sera décrite en plus de détail en se référant à la figure qui illustre un appareil de mise à l'air selon l'invention. Un fluide d'alimentation 1 pouvant être un débit de fumées ou un autre gaz contenant du dioxyde de carbone est envoyé à une unité de traitement 3 10 produisant un gaz résiduaire riche en dioxyde de carbone. L'unité de traitement peut être une unité d'oxycombustion, une unité de distillation de fumées d'oxycombustion, une cimenterie, une aciérie, une unité de production de gaz de synthèse (H2, CO), une unité de gazéification et de manière plus générale une unité de traitement du CO2 pur ou impur. L'unité 3 produit au moins de temps en 15 temps au moins un fluide riche en dioxyde de carbone 7, 9, 11 à envoyer à l'atmosphère. Ce fluide est produit par l'unité 3 à une pression d'au moins 5 bars absolus et au plus 50 bars absolus. Dans le cas concret, une unité produisant trois débits 7, 9, 11, pas nécessairement simultanément, sera décrite. Un premier débit 7 contenant 99% de dioxyde de carbone est détendu dans une première vanne 20 PSV1 jusqu'à une deuxième pression entre 5,3 bar absolus et 44 bar absolus. Un deuxième débit 9 contenant 98% de dioxyde de carbone est détendu dans une deuxième vanne PSV2 jusqu'à la deuxième pression. Un troisième débit 11 contenant 97% de dioxyde de carbone et à une pression comprise entre 15bara et 5,3bara est détendu dans une troisième vanne PSV3 jusqu'à la deuxième 25 pression. Les trois débits à la deuxième pression sont biphasiques et sont mélangés, formant un débit 13, et envoyés à une capacité 15 opérant à la deuxième pression. Un gaz 17 sort de la capacité 15 au moins ponctuellement, est détendu à la pression atmosphérique dans la vanne 19 et le gaz 21 formé est envoyé à l'atmosphère. Le débit 21 ne contient pas de solide.The apparatus may include means for delivering a liquid of the capacity to the processing unit. The apparatus may include means for delivering a liquid from the process unit to the capacity and means for withdrawing a liquid of the capacity as a liquid product. The invention will be described in more detail with reference to the figure which illustrates a venting apparatus according to the invention. A feed fluid 1 which may be a flue gas stream or other gas containing carbon dioxide is fed to a processing unit 3 producing a carbon dioxide rich tail gas. The treatment unit may be an oxy-fuel combustion unit, an oxy-fuel combustion distillation unit, a cement plant, a steel plant, a synthesis gas production unit (H2, CO), a gasification unit and so on. more general a pure or impure CO2 treatment unit. Unit 3 produces at least one time at least one fluid rich in carbon dioxide 7, 9, 11 to be sent to the atmosphere. This fluid is produced by unit 3 at a pressure of at least 5 bar absolute and at most 50 bar absolute. In the concrete case, a unit producing three flow rates 7, 9, 11, not necessarily simultaneously, will be described. A first flow 7 containing 99% carbon dioxide is expanded in a first valve PSV1 to a second pressure between 5.3 bar absolute and 44 bar absolute. A second flow 9 containing 98% of carbon dioxide is expanded in a second valve PSV2 until the second pressure. A third flow 11 containing 97% carbon dioxide and a pressure between 15bara and 5.3bara is expanded in a third valve PSV3 to the second pressure. The three flow rates at the second pressure are biphasic and are mixed, forming a flow 13, and sent to a capacity 15 operating at the second pressure. A gas 17 out of the capacity 15 at least punctually, is expanded at atmospheric pressure in the valve 19 and the gas 21 formed is sent to the atmosphere. The flow 21 does not contain any solid.
30 Le liquide formé 29 peut constituer un produit riche en dioxyde de carbone détendu dans une vanne 31. Eventuellement la capacité 15 peut constituer un stockage de l'unité 3 et peut être alimentée par un liquide riche en dioxyde de carbone 23 provenant de l'unité 3. Du liquide 25 riche en dioxyde de carbone provenant de la capacité 15 peut être envoyé après détente dans la vanne 27 pour être utilisé dans l'unité 3. Par exemple le liquide 25 peut servir de source de froid sur l'unité et être vaporisé à l'intérieur de l'unité 3. L'unité 3 peut produire un produit 5 selon le type de traitement. Ce produit 5 peut être de l'oxygène, de l'azote, de l'argon, du monoxyde de carbone, de l'hydrogène un gaz ou un liquide riche en dioxyde de carbone ou tout composé présent dans le mélange 1 sous forme gaz ou liquide.10 The formed liquid 29 may be a carbon dioxide-rich product expanded in a valve 31. Possibly the capacity 15 may constitute a storage of the unit 3 and may be supplied by a carbon dioxide-rich liquid 23 from the Unit 3. Carbon dioxide-rich liquid from the capacity 15 may be sent after expansion into the valve 27 for use in the unit 3. For example the liquid 25 may serve as a source of cold on the unit and The unit 3 can produce a product 5 depending on the type of treatment. This product can be oxygen, nitrogen, argon, carbon monoxide, hydrogen, a gas or a liquid rich in carbon dioxide or any compound present in the mixture 1 in gas form. or liquid.10
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1254468A FR2990749A1 (en) | 2012-05-15 | 2012-05-15 | METHOD AND APPARATUS FOR BREATHING A CO2-RICH FLUID |
| PCT/FR2013/051049 WO2013171421A2 (en) | 2012-05-15 | 2013-05-14 | Process and apparatus for venting a co2‑rich fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1254468A FR2990749A1 (en) | 2012-05-15 | 2012-05-15 | METHOD AND APPARATUS FOR BREATHING A CO2-RICH FLUID |
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| FR2990749A1 true FR2990749A1 (en) | 2013-11-22 |
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| FR1254468A Pending FR2990749A1 (en) | 2012-05-15 | 2012-05-15 | METHOD AND APPARATUS FOR BREATHING A CO2-RICH FLUID |
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| Country | Link |
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| WO (1) | WO2013171421A2 (en) |
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| US10274252B2 (en) | 2015-06-22 | 2019-04-30 | Exxonmobil Upstream Research Company | Purge to intermediate pressure in cryogenic distillation |
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| US3243967A (en) * | 1963-11-20 | 1966-04-05 | Continental Oil Co | Carbon dioxide liquification plant and process |
| US5177974A (en) * | 1986-11-19 | 1993-01-12 | Pub-Gas International Pty. Ltd. | Storage and transportation of liquid co2 |
| FR2872890A1 (en) * | 2005-08-08 | 2006-01-13 | Air Liquide | Integrated process for adsorption and cryogenic separation for the production of carbon dioxide from sources containing low percentages of carbon dioxide |
| DE102007007581A1 (en) * | 2007-02-15 | 2008-08-21 | Linde Ag | Carbon dioxide product producing method for gas analysis process, involves producing two-phase material-mixture by releasing fluid phase by throttle element, and vaporizing and heating fluid phase against application gas |
| US20080196584A1 (en) * | 2007-02-16 | 2008-08-21 | Bao Ha | Process for feed gas cooling in reboiler during co2 separation |
| FR2950925A1 (en) * | 2010-04-20 | 2011-04-08 | Air Liquide | Petroleum product e.g. crude oil, extracting method for oxycombustion apparatus, involves condensing part of acid gas and water to produce acidified water, and using acidified water as fluid for assisting extraction of product |
-
2012
- 2012-05-15 FR FR1254468A patent/FR2990749A1/en active Pending
-
2013
- 2013-05-14 WO PCT/FR2013/051049 patent/WO2013171421A2/en active Application Filing
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| US3243967A (en) * | 1963-11-20 | 1966-04-05 | Continental Oil Co | Carbon dioxide liquification plant and process |
| US5177974A (en) * | 1986-11-19 | 1993-01-12 | Pub-Gas International Pty. Ltd. | Storage and transportation of liquid co2 |
| FR2872890A1 (en) * | 2005-08-08 | 2006-01-13 | Air Liquide | Integrated process for adsorption and cryogenic separation for the production of carbon dioxide from sources containing low percentages of carbon dioxide |
| DE102007007581A1 (en) * | 2007-02-15 | 2008-08-21 | Linde Ag | Carbon dioxide product producing method for gas analysis process, involves producing two-phase material-mixture by releasing fluid phase by throttle element, and vaporizing and heating fluid phase against application gas |
| US20080196584A1 (en) * | 2007-02-16 | 2008-08-21 | Bao Ha | Process for feed gas cooling in reboiler during co2 separation |
| FR2950925A1 (en) * | 2010-04-20 | 2011-04-08 | Air Liquide | Petroleum product e.g. crude oil, extracting method for oxycombustion apparatus, involves condensing part of acid gas and water to produce acidified water, and using acidified water as fluid for assisting extraction of product |
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| ASPELUND ET AL: "Gas conditioning-The interface between CO2 capture and transport", 20070616, vol. 1, no. 3, 16 June 2007 (2007-06-16), pages 343 - 354, XP022119495 * |
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| WO2013171421A3 (en) | 2015-11-05 |
| WO2013171421A2 (en) | 2013-11-21 |
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