EP2704815A1 - Adsorber including parallel passage contactors having built-in insulation - Google Patents

Adsorber including parallel passage contactors having built-in insulation

Info

Publication number
EP2704815A1
EP2704815A1 EP12722442.6A EP12722442A EP2704815A1 EP 2704815 A1 EP2704815 A1 EP 2704815A1 EP 12722442 A EP12722442 A EP 12722442A EP 2704815 A1 EP2704815 A1 EP 2704815A1
Authority
EP
European Patent Office
Prior art keywords
adsorber
channels
parallel
adsorber according
insulation
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Withdrawn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
EP12722442.6A
Other languages
German (de)
French (fr)
Inventor
Benoit Davidian
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
Publication of EP2704815A1 publication Critical patent/EP2704815A1/en
Withdrawn legal-status Critical Current

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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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • 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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0423—Beds in columns
    • 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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0462—Temperature swing adsorption
    • 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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702—Hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water

Definitions

  • Adsorber comprising parallel passage contactors with integrated insulation
  • the invention relates to the isolation of an adsorber comprising several parallel-passage contactors and to the use of this same adsorber.
  • Adsorption is a physical phenomenon that is increasingly used industrially to separate or purify gas flows.
  • adsorption is conventionally used to dry various gas streams, in particular air, natural gas, for the production of hydrogen, for the production of oxygen and / or nitrogen from air atmospheric, to capture many components of various effluents before their use in a downstream process or venting such as VOC, nitrogen oxides, mercury ...
  • the present invention will particularly relate to TSA.
  • the adsorbent used is generally in the form of particles filled with an adsorber. These particles can be in the form of granules, rods, balls, crushed. The characteristic dimensions of these particles generally range from 0.5 mm to 5 mm.
  • Axial cylinders of conventional adsorbents in the form of balls use thermal insulation between the beds of balls and the ambient.
  • thermal insulation between the beds of balls and the ambient.
  • a small bottle typically with a diameter of less than 2 m, it is rather used an external insulation reported on the outer shell of the bottle, type insulation glass wool, or cellular glass or polyurethane foam: this insulation remains inefficient because during the heating phase in regeneration of the bottle, a portion of the thermal energy is used to heat the metal of the bottle, requiring the heat loss to be compensated by over-sizing the regeneration flow rate.
  • an internal insulation On a large bottle, typically with a diameter greater than 2m, an internal insulation is used: it must mechanically be able to contain the beds of adsorbent beads, not to favor the creation of preferential gas passage (outside the adsorbent bed) and be able to withstand any compression / decompression cycles between adsorption and regeneration.
  • a system of single or double gas blades which serves as an insulating cushion is conventionally used, considering that the air space remains stationary. These blades, relatively efficient in terms of insulation, are difficult to implement and cost relatively expensive.
  • a solution of the invention is an adsorber for adsorption of a fluid, comprising a bottle with at least two parallel-passage contactors arranged in series in the direction of the path of the fluid to be adsorbed, and characterized in that each contactor comprises an insulation internal.
  • internal insulation is meant an insulation which is specific to each contactor with parallel passages; in other words integrated in each contactor.
  • Parallel passage contactor means a device in which the fluid passes through channels whose walls contain adsorbent.
  • the fluid circulates in essentially obstacle free channels, these channels allowing the fluid to flow from an input to an output of the contactor.
  • These channels can be rectilinear connecting directly the input to the output of the contactor or present changes of direction.
  • the fluid is in contact with at least one adsorbent present at said walls.
  • the parallel-channel contactors have less pressure losses, which allows loss of equivalent charges to reduce the diameter of the adsorber, possibly increasing its height.
  • the contactors with parallel passages of the adsorber according to the invention may comprise one or the other of the following internal isolations.
  • the internal insulation of each of the contactors comprises:
  • Watertight means that prevents the creation of preferential gas passage outside the contactor with parallel passages.
  • Figure 1 shows a contactor with parallel passages with the double environment.
  • Figure 2 shows an adsorber according to the invention comprising a series of contactors with parallel passages with the double environment.
  • the insulation is preferably chosen from perlite, glass wool, rockwool, cellular glass, vacuum, airgel, multilayer insulation or any other insulation or combination of insulators conventionally used. artwork...
  • this first alternative can be supplemented by sealing elements fixed on the outer shell of the double environment facing the inner ferrule of the bottle.
  • the sealing elements are preferably selected from brushes, seals, welds or welded elements, glue or glued elements and preferably sized to overcome the possible differential expansion between the shell of the adsorber and the double environment of the parallel passage contactors during regeneration of the adsorber.
  • each parallel-channel contactor has channels and the channels are at least partly obstructed over a centripetal radial distance of 20 cm, preferably 10 cm, even more preferably 5 cm starting from the outer perimeter of the parallel-path contactor. .
  • This obstruction prevents the creation of preferential gas passage in the channels concerned.
  • the parallel passage contactors may optionally have a ferrule. Therefore, the term "outer perimeter" means the edge of the contactor with parallel passages or the edge of the ferrule of the contactor with parallel passages.
  • the channels to be partially obstructed are filled, over at least part of their length, with resin, mastic, silicone or any element that can be applied in liquid or pasty form to permanently close the channels concerned; and or
  • At least one of the ends of the channels to be partially obstructed is obstructed by a metal plate, or a plastic plate, or a silicone or rubberized seal, or any solid element that can be placed or fixed
  • the obstruction may be made at the top, bottom or part of each channel concerned. It can be envisaged to block the entire length of each channel concerned.
  • Figure 3 shows a parallel passage contactor with a metal plate at the upper ends of the channels to be clogged.
  • Figure 4 shows an adsorber according to the invention comprising a series of parallel passage contactors with a metal plate at the upper ends of the channels to be clogged.
  • the obstruction of the channels makes it possible to block the circulation of the fluid in these channels, and to create an insulation in the image of tiny blades of gas.
  • the immobile gas cells being much smaller than the conventional gas blades, a much better thermal insulation is obtained.
  • equivalent thermal insulation performance can greatly reduce the thickness of the insulation.
  • this second alternative may be supplemented by sealing elements fixed on the outer face of the parallel passage contactors facing the inner ferrule of the bottle.
  • the sealing elements are preferably chosen from brushes, seals, welds or welded elements, glue or glued elements and preferably dimensioned to overcome the possible differential expansion between the ferrule of the adsorber, and the outer perimeter of the parallel passage contactors during the regeneration of the adsorber.
  • the adsorbents that may be used in the parallel-passage contactors are those used in the conventional gas stream separation or purification units. The choice depends on the application. It is possible in the same contactor to use successively several different adsorbents. Mention may be made of silica gels, optionally doped activated alumina, activated carbons, zeolites of various types (3A, 4A, 5A, type X, LSX, Y etc. optionally exchanged, etc.). The zeolites are generally used in the form of microcrystals or even nano-crystals according to the synthetic methods. Other adsorbents, for example activated carbons, can be crushed to obtain micron-sized particles.
  • the contactors may be identical or on the contrary, it is possible to use this invention to singularize at least one contactor and adapt it to the operating conditions at this level of the adsorber. Regarding this modification, it may be another type of adsorbent, a change in the thickness of the adsorbent layer, the passage section, etc.
  • the device according to the invention can be used in various processes such as TSA, PTSA ... It can also be used to dry, decarbonate or stop secondary impurities of a gas stream, in particular from atmospheric air.
  • secondary impurities we mean the traces of hydrocarbons, NOx, SOx ...

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

The invention relates to an absorber for absorbing a fluid, including a bottle having at least two parallel passage contactors which are arranged in series in the direction of the path of the fluid to be absorbed, and which include inner insulation. Each parallel passage contactor has channels, and the channels are at least partially sealed over a centripetal radial distance of 20 cm from the outer perimeter of the parallel passage contactor.

Description

Adsorbeur comprenant des contacteurs à passages parallèles avec isolation intégrée  Adsorber comprising parallel passage contactors with integrated insulation
L'invention se rapporte à l'isolation d'un adsorbeur comprenant plusieurs contacteurs à passages parallèles et à l'utilisation de ce même adsorbeur. The invention relates to the isolation of an adsorber comprising several parallel-passage contactors and to the use of this same adsorber.
L'adsorption est un phénomène physique de plus en plus utilisé industriellement pour séparer ou épurer des flux gazeux.  Adsorption is a physical phenomenon that is increasingly used industrially to separate or purify gas flows.
Par exemple, l'adsorption est utilisée classiquement pour sécher des flux gazeux divers, en particulier l'air, le gaz naturel, pour la production d'hydrogène, pour la production d'oxygène et/ou d'azote à partir d'air atmosphérique, pour capturer de nombreux constituants d'effluents variés avant leur utilisation dans un procédé aval ou leur mise à l'évent comme les VOC, des oxydes d'azote, du mercure...  For example, adsorption is conventionally used to dry various gas streams, in particular air, natural gas, for the production of hydrogen, for the production of oxygen and / or nitrogen from air atmospheric, to capture many components of various effluents before their use in a downstream process or venting such as VOC, nitrogen oxides, mercury ...
Les procédés mis en œuvre sont soit à charge perdue (on parle alors généralement de lit de garde) soit régénérables. La régénération s'effectue soit par baisse de pression soit par augmentation de la température. On peut aussi coupler ces deux effets. On parle respectivement de PS A (pressure swing adsorption = adsorption à pression modulée), TSA (température swing adsorption = adsorption à température modulée), PTSA (pressure température swing adsorption = adsorption à pression et température modulée).  The methods used are either lost (usually referred to as a guard bed) or regenerable. Regeneration is carried out either by lowering pressure or by increasing the temperature. We can also couple these two effects. PSA (pressure swing adsorption = adsorption at modulated pressure), TSA (swing adsorption temperature = adsorption at modulated temperature), PTSA (pressure temperature swing adsorption = adsorption at pressure and modulated temperature).
Lorsque la régénération d'un PSA s'effectue sous vide, on utilise généralement le sigle VSA (vacuum swing adsorption = adsorption avec variations de vide).  When the regeneration of a PSA is carried out under vacuum, the symbol VSA (vacuum swing adsorption = adsorption with vacuum variations) is generally used.
La présente invention concernera en particulier les TSA.  The present invention will particularly relate to TSA.
L'adsorbant utilisé se présente généralement sous forme de particules dont on remplit un adsorbeur. Ces particules peuvent se trouver sous forme de granulés, de bâtonnets, de billes, de concassés. Les dimensions caractéristiques de ces particules vont généralement de 0.5 mm à 5mm.  The adsorbent used is generally in the form of particles filled with an adsorber. These particles can be in the form of granules, rods, balls, crushed. The characteristic dimensions of these particles generally range from 0.5 mm to 5 mm.
Les particules les plus petites permettent d'améliorer la cinétique d'adsorption et par là l'efficacité du procédé mais en contre partie elles créent sur la phase fluide des pertes de charge importantes.  The smallest particles make it possible to improve the kinetics of adsorption and thus the efficiency of the process, but in part they create significant losses on the fluid phase.
Les bouteilles axiales d'adsorbants classiques sous forme de billes (circulation du fluide ascendante ou descendante) utilisent une isolation thermique entre les lits de billes et l'ambiante. Sur une petite bouteille, typiquement avec un diamètre inférieur à 2m, on utilise plutôt une isolation externe rapportée sur la virole extérieure de la bouteille, de type isolation laine de verre, ou verre cellulaire ou mousse de polyuréthane : cette isolation reste peu performante, car en phase de chauffage en régénération de la bouteille, une partie de l'énergie thermique est utilisée pour chauffer le métal de la bouteille, nécessitant de compenser la perte thermique en sur-dimensionnant le débit de régénération. Axial cylinders of conventional adsorbents in the form of balls (flow of upward or downward fluid) use thermal insulation between the beds of balls and the ambient. On a small bottle, typically with a diameter of less than 2 m, it is rather used an external insulation reported on the outer shell of the bottle, type insulation glass wool, or cellular glass or polyurethane foam: this insulation remains inefficient because during the heating phase in regeneration of the bottle, a portion of the thermal energy is used to heat the metal of the bottle, requiring the heat loss to be compensated by over-sizing the regeneration flow rate.
Sur une bouteille de grande taille, typiquement avec un diamètre supérieure à 2m, on utilise une isolation interne : celle-ci doit mécaniquement pouvoir contenir les lits de billes d'adsorbants, ne pas favoriser la création de passage préférentiel de gaz (en dehors du lit d'adsorbants) et pouvoir résister aux éventuels cycles de compression / décompression entre l'adsorption et la régénération. On utilise classiquement un système de simple ou double lames de gaz qui fait office de coussin isolant, considérant que la lame d'air reste immobile. Ces lames, relativement performantes en terme d'isolation, sont difficiles à mettre en œuvre et coûtent relativement chères.  On a large bottle, typically with a diameter greater than 2m, an internal insulation is used: it must mechanically be able to contain the beds of adsorbent beads, not to favor the creation of preferential gas passage (outside the adsorbent bed) and be able to withstand any compression / decompression cycles between adsorption and regeneration. A system of single or double gas blades which serves as an insulating cushion is conventionally used, considering that the air space remains stationary. These blades, relatively efficient in terms of insulation, are difficult to implement and cost relatively expensive.
Partant de là, un problème qui se pose est de fournir des adsorbeurs présentant une meilleure isolation, pour un fonctionnement en TSA.  From there, a problem that arises is to provide adsorbers with better insulation, for operation in TSA.
Une solution de l'invention est un adsorbeur pour adsorption d'un fluide, comprenant une bouteille avec au moins deux contacteurs à passages parallèles disposés en série dans le sens du trajet du fluide à adsorber, et caractérisé en ce que chaque contacteur comprend une isolation interne.  A solution of the invention is an adsorber for adsorption of a fluid, comprising a bottle with at least two parallel-passage contactors arranged in series in the direction of the path of the fluid to be adsorbed, and characterized in that each contactor comprises an insulation internal.
Par « isolation interne », on entend une isolation qui est propre à chaque contacteur à passages parallèles ; autrement dit intégrée dans chaque contacteur.  By "internal insulation" is meant an insulation which is specific to each contactor with parallel passages; in other words integrated in each contactor.
Par contacteur à passages parallèles, on entend un dispositif dans lequel le fluide passe dans des canaux dont les parois contiennent de l'adsorbant. Le fluide circule dans des canaux essentiellement libres d'obstacles, ces canaux permettant au fluide de circuler d'une entrée à une sortie du contacteur. Ces canaux peuvent être rectilignes reliant directement l'entrée à la sortie du contacteur ou présenter des changements de direction. Au cours de sa circulation, le fluide est en contact avec au moins un adsorbant présent au niveau des dites parois.  Parallel passage contactor means a device in which the fluid passes through channels whose walls contain adsorbent. The fluid circulates in essentially obstacle free channels, these channels allowing the fluid to flow from an input to an output of the contactor. These channels can be rectilinear connecting directly the input to the output of the contactor or present changes of direction. During its circulation, the fluid is in contact with at least one adsorbent present at said walls.
La solution selon l'invention apporte les avantages suivants :  The solution according to the invention provides the following advantages:
- Facilité de mise en œuvre, car intégrée aux contacteurs à passages parallèles : l'isolation est mise en place en même temps que l'on met en place les contacteurs dans Γ adsorbeur. - Isolation de type interne, équivalente à une multitude de lames d'air immobile : très bonne performance d'isolation thermique, permettant soit de réduire sa taille à performance équivalent, soit d'augmenter la performance thermique à taille équivalente - Ease of implementation, because integrated parallel contactors: the insulation is put in place at the same time that we put the contactors in Γ adsorber. - Internal type insulation, equivalent to a multitude of still air blades: very good thermal insulation performance, allowing to reduce its size to equivalent performance, or to increase the thermal performance to equivalent size
- Peu cher.  - Cheap.
Par ailleurs, les contacteurs à passages parallèles font moins de pertes de charges, ce qui permet à perte de charges équivalentes de réduire le diamètre de l'adsorbeur, en augmentant éventuellement sa hauteur.  Furthermore, the parallel-channel contactors have less pressure losses, which allows loss of equivalent charges to reduce the diameter of the adsorber, possibly increasing its height.
Selon le cas, les contacteurs à passages parallèles de l'adsorbeur selon l'invention peuvent comprendre l'une ou l'autre des isolations internes suivantes.  As the case may be, the contactors with parallel passages of the adsorber according to the invention may comprise one or the other of the following internal isolations.
Selon une première alternative, l'isolation interne de chacun des contacteurs comprend : According to a first alternative, the internal insulation of each of the contactors comprises:
- un double envirolage étanche fixé sur l'ensemble de la hauteur du contacteur, et a double sealed environment attached to the entire height of the contactor, and
- un isolant introduit dans l'espace formé par le double envirolage.  an insulator introduced into the space formed by the double environment.
On entend par étanche « qui empêche la création de passage préférentiel de gaz en dehors du contacteur à passages parallèles ».  "Watertight" means that prevents the creation of preferential gas passage outside the contactor with parallel passages.
La Figure 1 représente un contacteur à passages parallèles avec le double envirolage. Figure 1 shows a contactor with parallel passages with the double environment.
La Figure 2 représente un adsorbeur selon l'invention comprenant une série de contacteurs à passages parallèles avec le double envirolage. Figure 2 shows an adsorber according to the invention comprising a series of contactors with parallel passages with the double environment.
L'isolant est de préférence choisi parmi la perlite, la laine de verre, la laine de roche, du verre cellulaire, du vide, de l'aérogel, de l'isolant multicouches ou tout autre isolant ou combinaison d'isolants classiquement mise en oeuvre...  The insulation is preferably chosen from perlite, glass wool, rockwool, cellular glass, vacuum, airgel, multilayer insulation or any other insulation or combination of insulators conventionally used. artwork...
D'autre part, cette première alternative peut être complétée par des éléments d'étanchéité fixés sur la virole externe du double envirolage face à la virole interne de la bouteille. Les éléments d'étanchéité sont de préférence choisis parmi les balayettes, les joints, des soudures ou des éléments soudés, de la colle ou des éléments collés et de préférence dimensionnés de manière à pallier à l'éventuelle dilatation différentielle entre la virole de l'adsorbeur et le double envirolage des contacteurs à passages parallèles lors de la régénération de l'adsorbeur.  On the other hand, this first alternative can be supplemented by sealing elements fixed on the outer shell of the double environment facing the inner ferrule of the bottle. The sealing elements are preferably selected from brushes, seals, welds or welded elements, glue or glued elements and preferably sized to overcome the possible differential expansion between the shell of the adsorber and the double environment of the parallel passage contactors during regeneration of the adsorber.
Selon une deuxième alternative, chaque contacteur à passages parallèles présente des canaux et les canaux sont au moins en partie obstrués sur une distance radiale centripète de 20 cm, préférentiellement 10 cm, encore plus préférentiellement 5 cm en partant du périmètre extérieur du contacteur à passages parallèles. Cette obstruction empêche la création de passage préférentiel de gaz dans les canaux concernés. According to a second alternative, each parallel-channel contactor has channels and the channels are at least partly obstructed over a centripetal radial distance of 20 cm, preferably 10 cm, even more preferably 5 cm starting from the outer perimeter of the parallel-path contactor. . This obstruction prevents the creation of preferential gas passage in the channels concerned.
Notons que dans cette deuxième alternative, les contacteurs à passages parallèles peuvent éventuellement présenter une virole. Dès lors, par « périmètre extérieur » on entend le bord du contacteur à passages parallèles ou le bord de la virole du contacteur à passages parallèles.  Note that in this second alternative, the parallel passage contactors may optionally have a ferrule. Therefore, the term "outer perimeter" means the edge of the contactor with parallel passages or the edge of the ferrule of the contactor with parallel passages.
Pour réaliser l'obstruction des canaux :  To achieve the obstruction of the channels:
- les canaux devant être en partie obstrués sont comblés, sur au moins une partie de leur longueur, par de la résine, du mastic, du silicone ou tout élément qui peut être appliqué sous forme liquide ou pâteuse pour boucher durablement les canaux concernés ; et/ou  - The channels to be partially obstructed are filled, over at least part of their length, with resin, mastic, silicone or any element that can be applied in liquid or pasty form to permanently close the channels concerned; and or
- au moins une des extrémités des canaux devant être en partie obstrués est obstruée par une plaque métallique, ou une plaque plastique, ou un joint silicone ou caoutchouté, ou tout élément solide qui peut être posé ou fixé  at least one of the ends of the channels to be partially obstructed is obstructed by a metal plate, or a plastic plate, or a silicone or rubberized seal, or any solid element that can be placed or fixed
L'obstruction peut être faite en partie haute, en partie basse ou en partie de chaque canal concerné. Il peut être envisagé de boucher l'intégralité de la longueur de chaque canal concerné.  The obstruction may be made at the top, bottom or part of each channel concerned. It can be envisaged to block the entire length of each channel concerned.
La Figure 3 représente un contacteur à passages parallèles avec une plaque métallique aux extrémités supérieures des canaux devant être obstrués.  Figure 3 shows a parallel passage contactor with a metal plate at the upper ends of the channels to be clogged.
La Figure 4 représente un adsorbeur selon l'invention comprenant une série de contacteurs à passages parallèles avec une plaque métallique aux extrémités supérieures des canaux devant être obstrués.  Figure 4 shows an adsorber according to the invention comprising a series of parallel passage contactors with a metal plate at the upper ends of the channels to be clogged.
Dans cette seconde alternative, l'obstruction des canaux permet de bloquer la circulation du fluide dans ces canaux, et de créer une isolation à l'image de minuscules lames de gaz. Les cellules de gaz immobiles étant beaucoup plus petites que les lames de gaz classiques, on obtient une isolation thermique nettement plus performante. Alternativement, à performance d'isolation thermique équivalente, on peut fortement réduire l'épaisseur de l'isolation.  In this second alternative, the obstruction of the channels makes it possible to block the circulation of the fluid in these channels, and to create an insulation in the image of tiny blades of gas. The immobile gas cells being much smaller than the conventional gas blades, a much better thermal insulation is obtained. Alternatively, equivalent thermal insulation performance, can greatly reduce the thickness of the insulation.
D'autre part, cette seconde alternative peut être complétée par des éléments d'étanchéité fixés sur la face externe des contacteurs à passages parallèles face à la virole interne de la bouteille. Les éléments d'étanchéité sont de préférence choisis parmi les balayettes, les joints, des soudures ou des éléments soudés, de la colle ou des éléments collés et de préférence dimensionnés de manière à pallier à l'éventuelle dilatation différentielle entre la virole de l'adsorbeur, et le périmètre extérieur des contacteurs à passages parallèles lors de la régénération de l'adsorbeur. On the other hand, this second alternative may be supplemented by sealing elements fixed on the outer face of the parallel passage contactors facing the inner ferrule of the bottle. The sealing elements are preferably chosen from brushes, seals, welds or welded elements, glue or glued elements and preferably dimensioned to overcome the possible differential expansion between the ferrule of the adsorber, and the outer perimeter of the parallel passage contactors during the regeneration of the adsorber.
Les adsorbants susceptibles d'être utilisés dans les contacteurs à passages parallèles sont ceux utilisés dans les unités de séparation ou purification de flux gazeux classiques. Le choix dépend de l'application. Il est possible dans un même contacteur d'utiliser successivement plusieurs adsorbants différents. On pourra citer les gels de silice, l'alumine activée éventuellement dopée, les charbons actifs, les zéolites de type divers (3A, 4A, 5A, type X, LSX, Y etc. éventuellement échangées...). Les zéolites sont généralement utilisées sous forme de microcristaux, voire de nano cristaux selon les procédés de synthèse. D'autres adsorbants, par exemple les charbons actifs, peuvent être concassés pour obtenir des particules de l'ordre du micron.  The adsorbents that may be used in the parallel-passage contactors are those used in the conventional gas stream separation or purification units. The choice depends on the application. It is possible in the same contactor to use successively several different adsorbents. Mention may be made of silica gels, optionally doped activated alumina, activated carbons, zeolites of various types (3A, 4A, 5A, type X, LSX, Y etc. optionally exchanged, etc.). The zeolites are generally used in the form of microcrystals or even nano-crystals according to the synthetic methods. Other adsorbents, for example activated carbons, can be crushed to obtain micron-sized particles.
Les contacteurs peuvent être identiques ou au contraire, il est possible d'utiliser cette invention pour singulariser au moins un contacteur et l'adapter aux conditions opératoires se trouvant à ce niveau de l'adsorbeur. Concernant cette modification, il peut s'agir d'un autre type d'adsorbant, d'une modification de l'épaisseur de la couche adsorbante, de la section de passage, etc....  The contactors may be identical or on the contrary, it is possible to use this invention to singularize at least one contactor and adapt it to the operating conditions at this level of the adsorber. Regarding this modification, it may be another type of adsorbent, a change in the thickness of the adsorbent layer, the passage section, etc.
Le dispositif selon l'invention peut être utilisé dans divers procédés tels que les TSA, PTSA... Il peut également être utilisé pour sécher, décarbonater ou arrêter des impuretés secondaires d'un flux gazeux, notamment issu de l'air atmosphérique. Par impuretés secondaires on entend les traces d'hydrocarbures, les NOx, les SOx...  The device according to the invention can be used in various processes such as TSA, PTSA ... It can also be used to dry, decarbonate or stop secondary impurities of a gas stream, in particular from atmospheric air. By secondary impurities we mean the traces of hydrocarbons, NOx, SOx ...

Claims

Revendications claims
1. Adsorbeur pour adsorption d'un fluide, comprenant une bouteille avec au moins deux contacteurs à passages parallèles disposés en série dans le sens du trajet du fluide à adsorber, et caractérisé en ce que chaque contacteur comprend une isolation interne, chaque contacteur à passages parallèles présentant des canaux et les canaux étant au moins en partie obstrués sur une distance radiale centripète de 20 cm en partant du périmètre extérieur du contacteur à passages parallèles. Adsorber for adsorption of a fluid, comprising a bottle with at least two parallel-passage contactors arranged in series in the direction of the path of the fluid to be adsorbed, and characterized in that each contactor comprises an internal insulation, each switch with passages parallel with channels and the channels being at least partially obstructed over a centripetal radial distance of 20 cm from the outer perimeter of the parallel passage contactor.
2. Adsorbeur selon la revendication 1, caractérisé en ce que les canaux en partie obstrués sont comblés, sur au moins une partie de leur longueur, par un liquide ou une pâte, de préférence par de la résine, du mastic, ou de la silicone. 2. Adsorber according to claim 1, characterized in that the partially clogged channels are filled, over at least a part of their length, with a liquid or a paste, preferably with resin, putty, or silicone .
3. Adsorbeur selon la revendication 1, caractérisé ce qu'au moins une des extrémités des canaux en partie obstrués est obstruée par un élément solide posé ou fixé, de préférence par une plaque métallique, une plaque plastique, ou un joint silicone ou caoutchouté. 3. Adsorber according to claim 1, characterized in that at least one end of the partially obstructed channels is obstructed by a solid element placed or fixed, preferably by a metal plate, a plastic plate, or a silicone or rubberized seal.
4. Adsorbeur selon l'une des revendications 1 à 3, caractérisé en ce que ledit adsorbeur comprend des éléments d'étanchéité fixés sur la face externe des contacteurs à passages parallèles face à la virole interne de la bouteille. 4. Adsorber according to one of claims 1 to 3, characterized in that said adsorber comprises sealing elements fixed on the outer face of the parallel passage contactors facing the inner ring of the bottle.
5. Adsorbeur selon la revendication 4, caractérisé en ce que les éléments d'étanchéité sont choisis parmi les balayettes, les joints, des soudures, des éléments soudés, de la colle ou des éléments collés. 5. Adsorber according to claim 4, characterized in that the sealing elements are selected from brushes, seals, welds, welded elements, glue or glued elements.
6. Adsorbeur selon l'une des revendications 4 ou 5, caractérisé en ce que les éléments d'étanchéité sont dimensionnés de manière à pallier à la dilatation différentielle entre la virole de la bouteille et le périmètre extérieur des contacteurs à passages parallèles lors de la régénération de Γ adsorbeur. 6. Adsorber according to one of claims 4 or 5, characterized in that the sealing elements are sized to overcome the differential expansion between the ferrule of the bottle and the outer perimeter of the parallel passage switches in the regeneration of adsorber.
7. Utilisation d'un adsorbeur selon l'une des revendications 1 à 6, pour sécher, décarbonater ou arrêter des impuretés secondaires d'un flux gazeux. 7. Use of an adsorber according to one of claims 1 to 6, for drying, decarbonating or stopping secondary impurities of a gas stream.
8. Utilisation d'un adsorbeur selon l'une des revendications 1 à 6, pour capturer les NOx, les SOx ou les traces d'hydrocarbures contenu dans un flux gazeux. 8. Use of an adsorber according to one of claims 1 to 6 for capturing NOx, SOx or traces of hydrocarbons contained in a gas stream.
9. Utilisation d'un adsorbeur selon l'une des revendications 1 à 6 dans un cycle TSA, ou PTSA. 9. Use of an adsorber according to one of claims 1 to 6 in a TSA cycle, or PTSA.
EP12722442.6A 2011-05-03 2012-04-20 Adsorber including parallel passage contactors having built-in insulation Withdrawn EP2704815A1 (en)

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FR1153756A FR2974735B1 (en) 2011-05-03 2011-05-03 ADSORBER COMPRISING PARALLEL PASSAGE CONTACTORS WITH INTEGRATED INSULATION
PCT/FR2012/050859 WO2012172219A1 (en) 2011-05-03 2012-04-20 Adsorber including parallel passage contactors having built-in insulation

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WO2012172219A1 (en) 2012-12-20
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US20140083293A1 (en) 2014-03-27
WO2012172219A8 (en) 2013-01-24
US9339754B2 (en) 2016-05-17
FR2974735A1 (en) 2012-11-09
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