WO2022180200A1 - System for trapping silica and hydrogen production system comprising such a system - Google Patents

System for trapping silica and hydrogen production system comprising such a system Download PDF

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Publication number
WO2022180200A1
WO2022180200A1 PCT/EP2022/054759 EP2022054759W WO2022180200A1 WO 2022180200 A1 WO2022180200 A1 WO 2022180200A1 EP 2022054759 W EP2022054759 W EP 2022054759W WO 2022180200 A1 WO2022180200 A1 WO 2022180200A1
Authority
WO
WIPO (PCT)
Prior art keywords
enclosure
cartridge
trapping
trapping system
gas
Prior art date
Application number
PCT/EP2022/054759
Other languages
French (fr)
Inventor
Nicolas GUIHENEUF
François-Xavier BOULAIRE
Original Assignee
Naval Group
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 Naval Group filed Critical Naval Group
Publication of WO2022180200A1 publication Critical patent/WO2022180200A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0004—Details of removable closures, lids, caps or filter heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially

Definitions

  • TITLE SILICA TRAP SYSTEM AND HYDROGEN PRODUCTION SYSTEM COMPRISING SUCH A SYSTEM
  • the present invention relates to a silica trapping system.
  • the invention relates to a system for trapping the silica contained in a gas resulting from reforming and circulating in a hydrogen production system.
  • the invention also relates to a hydrogen production system comprising such a trapping system.
  • this gasified silica can return to a solid form.
  • Certain parts of the system in particular have contact surfaces which promote the deposition of silica, which can lead to the gradual clogging, for example, of the reverse water gas reactor (for “Water Gas Shift”) and consequently the degradation of its performance.
  • the object of the invention is therefore to solve these problems.
  • the subject of the invention is a system for trapping silica contained in a gas resulting from reforming and circulating in a hydrogen production system, characterized in that it comprises a closed enclosure in which is placed a cartridge filtering and provided with an unfiltered gas inlet in the filter cartridge and with a filtered gas outlet at the periphery of this cartridge.
  • the filter cartridge is a cylindrical cartridge placed opposite the gas inlet; the gas inlet is arranged in the bottom of the enclosure; the gas inlet is arranged in the center of the enclosure; the gas outlet is arranged in a side wall of the enclosure; the enclosure has a removable cover to facilitate changing the cartridge; the cover is fixed by bolting to the rest of the enclosure;
  • the cartridge comprises a basket in which ceramic trapping pellets are placed;
  • the pellets are made of a material chosen from the group comprising ceria, alumina or zirconia.
  • the invention also relates to a hydrogen production system comprising a silica trapping system as described above.
  • Figure 1 shows a sectional view illustrating an embodiment of a silica trapping system according to the invention.
  • FIG. 1 illustrates a silica trapping system designated by the general reference 1 .
  • This trapping system makes it possible to block the gasified silica contained in a gas resulting from reforming and circulating in a hydrogen production system such as in a fuel cell for example.
  • This trapping system then comprises a closed enclosure designated by the general reference 2, in which is arranged a filter cartridge designated by the general reference 3.
  • This enclosure is provided with an unfiltered gas inlet designated by the general reference 4 and a filtered gas outlet at the periphery of this cartridge, designated by the general reference 5.
  • the filter cartridge is a cylindrical cartridge which is placed opposite in the gas inlet 4.
  • the cartridge 3 is placed around this gas inlet 4 so as to cause the gas to pass through it and trap the silica in the cartridge.
  • the gas inlet 4 is formed in the bottom of the enclosure, for example in the center thereof.
  • the gas outlet 5 is for its part provided for example in a side wall of this enclosure 2.
  • the enclosure may also include a removable cover to facilitate maintenance of the system and in particular changing the cartridge, this cover being designated by the general reference 6.
  • the cover 6 can be fixed for example by bolting to the rest of the enclosure, one of the corresponding bolts being designated by the general reference 7 in this figure.
  • the filter cartridge 3 may comprise a basket, for example mechanically welded, designated by the general reference 8 in this figure, in which are placed trapping pellets, for example made of ceramic, designated by general reference 9.
  • pellets can for example be made of a material chosen from the group comprising ceria, alumina or zirconia. Of course, other materials can be used.
  • pellets can for example have a cylindrical shape with a diameter of 1 mm and an average length of 10 mm for example.
  • They can also have a porosity of 0.4 for example.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

This system for trapping silica contained in a reforming gas and circulating in a hydrogen production system is characterized in that it comprises a closed chamber (2) in which is positioned a filter cartridge (3) equipped with a inlet (4) for unfiltered gas into the filter cartridge and an outlet (5) for filtered gas at the periphery of this cartridge.

Description

DESCRIPTION DESCRIPTION
TITRE : SYSTEME DE PIEGEAGE DE SILICE ET SYSTEME DE PRODUCTION D'HYDROGENE COMPORTANT UN TEL SYSTEME TITLE: SILICA TRAP SYSTEM AND HYDROGEN PRODUCTION SYSTEM COMPRISING SUCH A SYSTEM
La présente invention concerne un système de piégeage de silice. The present invention relates to a silica trapping system.
Plus particulièrement l’invention concerne un système de piégeage de la silice contenue dans un gaz issu de reformage et circulant dans un système de production d’hydrogène. More particularly, the invention relates to a system for trapping the silica contained in a gas resulting from reforming and circulating in a hydrogen production system.
L’invention concerne également un système de production d'hydrogène comportant un tel système de piégeage. The invention also relates to a hydrogen production system comprising such a trapping system.
On sait que dans ces systèmes de production d’hydrogène par reformage, la température peut atteindre pratiquement 1000°C. It is known that in these hydrogen production systems by reforming, the temperature can reach almost 1000°C.
À ces températures, certains matériaux utilisés pour la réalisation de certaines pièces, libèrent de la silice sous forme gazéifiée. At these temperatures, certain materials used to make certain parts release silica in gasified form.
Dans des zones à basse température, cette silice gazéifiée peut repasser sous une forme solide. In areas of low temperature, this gasified silica can return to a solid form.
Certaines pièces du système en particulier présentent des surfaces de contact qui favorisent le dépôt de silice, ce qui peut entraîner le bouchage progressif par exemple du réacteur de gaz à l’eau inverse (pour « Water Gas Shift » en anglais) et par conséquent la dégradation des performances de celui-ci. Certain parts of the system in particular have contact surfaces which promote the deposition of silica, which can lead to the gradual clogging, for example, of the reverse water gas reactor (for “Water Gas Shift”) and consequently the degradation of its performance.
Il est alors nécessaire de procéder à une maintenance relativement lourde du réacteur en démontant et en remplaçant par exemple certaines pièces. It is then necessary to carry out relatively heavy maintenance of the reactor by dismantling and replacing certain parts, for example.
On conçoit que tout ceci présente un certain nombre d’inconvénients notamment au niveau du temps requis et du coût de ce type d’opérations sans parler de problèmes par exemple liés aux dégradations de performances voire d’indisponibilité du système par exemple d’énergie dans un contexte opérationnel. It is understood that all this has a certain number of drawbacks, particularly in terms of the time required and the cost of this type of operation, not to mention problems, for example, related to performance degradation or even unavailability of the system, for example energy in an operational context.
Le but de l’invention est donc de résoudre ces problèmes. The object of the invention is therefore to solve these problems.
À cet effet, l’invention a pour objet un système de piégeage de silice contenue dans un gaz issu de reformage et circulant dans un système de production d’hydrogène, caractérisé en ce qu’il comporte une enceinte fermée dans laquelle est disposée une cartouche filtrante et munie d’une entrée de gaz non filtré dans la cartouche filtrante et d’une sortie de gaz filtré à la périphérie de cette cartouche. To this end, the subject of the invention is a system for trapping silica contained in a gas resulting from reforming and circulating in a hydrogen production system, characterized in that it comprises a closed enclosure in which is placed a cartridge filtering and provided with an unfiltered gas inlet in the filter cartridge and with a filtered gas outlet at the periphery of this cartridge.
Suivant d’autres caractéristiques du système selon l’invention, prises seules ou en combinaison : la cartouche filtrante est une cartouche cylindrique placée en regard de l’entrée de gaz ; l’entrée de gaz est ménagée dans le fond de l’enceinte ; l’entrée de gaz est ménagée au centre de l’enceinte ; la sortie de gaz est ménagée dans une paroi latérale de l’enceinte ; l’enceinte comporte un couvercle amovible pour faciliter le changement de la cartouche ; le couvercle est fixé par boulonnage sur le reste de l’enceinte ; According to other characteristics of the system according to the invention, taken alone or in combination: the filter cartridge is a cylindrical cartridge placed opposite the gas inlet; the gas inlet is arranged in the bottom of the enclosure; the gas inlet is arranged in the center of the enclosure; the gas outlet is arranged in a side wall of the enclosure; the enclosure has a removable cover to facilitate changing the cartridge; the cover is fixed by bolting to the rest of the enclosure;
- la cartouche comporte un panier dans lequel sont placées des pastilles de piégeage en céramique ; - the cartridge comprises a basket in which ceramic trapping pellets are placed;
- les pastilles sont réalisées dans un matériau choisi dans le groupe comprenant de la cérine, de l’alumine ou de la zircone. - the pellets are made of a material chosen from the group comprising ceria, alumina or zirconia.
Selon un autre aspect l’invention a également pour objet un système de production d'hydrogène comportant un système de piégeage de silice tel que décrit précédemment. According to another aspect, the invention also relates to a hydrogen production system comprising a silica trapping system as described above.
L’invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d’exemple et faite en se référant au dessin annexé, sur lequel : The invention will be better understood on reading the following description, given solely by way of example and made with reference to the attached drawing, in which:
- [Fig. 1] la figure 1 représente une vue en coupe illustrant un exemple de réalisation d’un système de piégeage de silice selon l’invention. - [Fig. 1] Figure 1 shows a sectional view illustrating an embodiment of a silica trapping system according to the invention.
On a en effet illustré sur cette figure 1 , un système de piégeage de silice désigné par la référence générale 1 . In fact, FIG. 1 illustrates a silica trapping system designated by the general reference 1 .
Ce système de piégeage permet de bloquer la silice gazéifiée contenue dans un gaz issu de reformage et circulant dans un système de production d’hydrogène comme dans une pile à combustible par exemple. This trapping system makes it possible to block the gasified silica contained in a gas resulting from reforming and circulating in a hydrogen production system such as in a fuel cell for example.
Ce système de piégeage comporte alors une enceinte fermée désignée par la référence générale 2, dans laquelle est disposée une cartouche filtrante désignée par la référence générale 3. This trapping system then comprises a closed enclosure designated by the general reference 2, in which is arranged a filter cartridge designated by the general reference 3.
Cette enceinte est munie d’une entrée de gaz non filtré désignée par la référence générale 4 et d’une sortie de gaz filtré à la périphérie de cette cartouche, désignée par la référence générale 5. This enclosure is provided with an unfiltered gas inlet designated by the general reference 4 and a filtered gas outlet at the periphery of this cartridge, designated by the general reference 5.
En fait, et comme cela est illustré, la cartouche filtrante est une cartouche cylindrique qui est placée en regard dans l’entrée de gaz 4. In fact, and as shown, the filter cartridge is a cylindrical cartridge which is placed opposite in the gas inlet 4.
Plus particulièrement la cartouche 3 est placée autour de cette entrée de gaz 4 de façon à amener le gaz à traverser celle-ci et piéger la silice dans la cartouche. More particularly the cartridge 3 is placed around this gas inlet 4 so as to cause the gas to pass through it and trap the silica in the cartridge.
Dans l’exemple de réalisation illustré sur cette figure, l’entrée de gaz 4 est ménagée dans le fond de l’enceinte, par exemple au centre de celle-ci. La sortie de gaz 5 est quant à elle ménagée par exemple dans une paroi latérale de cette enceinte 2. In the exemplary embodiment illustrated in this figure, the gas inlet 4 is formed in the bottom of the enclosure, for example in the center thereof. The gas outlet 5 is for its part provided for example in a side wall of this enclosure 2.
Comme cela est illustré, l’enceinte peut également comporter un couvercle amovible pour faciliter la maintenance du système et notamment le changement de la cartouche, ce couvercle étant désigné par la référence générale 6. As illustrated, the enclosure may also include a removable cover to facilitate maintenance of the system and in particular changing the cartridge, this cover being designated by the general reference 6.
En fait, le couvercle 6 peut être fixé par exemple par boulonnage sur le reste de l’enceinte, l’un des boulons correspondants étant désigné par la référence générale 7 sur cette figure. In fact, the cover 6 can be fixed for example by bolting to the rest of the enclosure, one of the corresponding bolts being designated by the general reference 7 in this figure.
Dans l’exemple de réalisation illustré sur cette figure également, la cartouche filtrante 3 peut comporter un panier par exemple mécano-soudé, désigné par la référence générale 8 sur cette figure, dans lequel sont placées des pastilles de piégeage par exemple en céramique, désignées par la référence générale 9. In the exemplary embodiment illustrated in this figure also, the filter cartridge 3 may comprise a basket, for example mechanically welded, designated by the general reference 8 in this figure, in which are placed trapping pellets, for example made of ceramic, designated by general reference 9.
Ces pastilles peuvent par exemple être réalisées dans un matériau choisi dans le groupe comprenant de la cérine, de l’alumine ou de la zircone. Bien entendu, d’autres matériaux peuvent être utilisés. These pellets can for example be made of a material chosen from the group comprising ceria, alumina or zirconia. Of course, other materials can be used.
Ces pastilles peuvent par exemple présenter une forme cylindrique de diamètre de 1 mm et de longueur moyenne de 10mm par exemple. These pellets can for example have a cylindrical shape with a diameter of 1 mm and an average length of 10 mm for example.
Elles peuvent également présenter une porosité de 0.4 par exemple. They can also have a porosity of 0.4 for example.
Bien entendu, d’autres modes de réalisation peuvent être envisagés. Of course, other embodiments can be envisaged.

Claims

REVENDICATIONS
1. Système de piégeage de silice contenue dans un gaz issu de reformage et circulant dans un système de production d’hydrogène, caractérisé en ce qu’il comporte une enceinte fermée (2) dans laquelle est disposée une cartouche filtrante (3) et munie d’une entrée (4) de gaz non filtré dans la cartouche filtrante et d’une sortie (5) de gaz filtré à la périphérie de cette cartouche. 1. Silica trapping system contained in a gas resulting from reforming and circulating in a hydrogen production system, characterized in that it comprises a closed enclosure (2) in which is placed a filter cartridge (3) and provided an inlet (4) for unfiltered gas in the filter cartridge and an outlet (5) for filtered gas at the periphery of this cartridge.
2. Système de piégeage selon la revendication 1 , caractérisé en ce que la cartouche filtrante (3) est une cartouche cylindrique placée en regard de l’entrée de gaz (4). 2. Trapping system according to claim 1, characterized in that the filter cartridge (3) is a cylindrical cartridge placed opposite the gas inlet (4).
3. Système de piégeage selon la revendication 2, caractérisé en ce que l’entrée de gaz (4) est ménagée dans le fond de l’enceinte (2) . 3. Trapping system according to claim 2, characterized in that the gas inlet (4) is formed in the bottom of the enclosure (2).
4. Système de piégeage selon la revendication 3, caractérisé en ce que l’entrée de gaz (4) est ménagée au centre de l’enceinte (2) . 4. Trapping system according to claim 3, characterized in that the gas inlet (4) is formed in the center of the enclosure (2).
5. Système de piégeage selon l’une quelconque des revendications précédentes, caractérisé en ce que la sortie de gaz (5) est ménagée dans une paroi latérale de l’enceinte (2) . 5. Trapping system according to any one of the preceding claims, characterized in that the gas outlet (5) is formed in a side wall of the enclosure (2).
6. Système de piégeage selon l’une quelconque des revendications précédentes, caractérisé en ce que l’enceinte (2) comporte un couvercle amovible (6) pour faciliter le changement de la cartouche. 6. Trapping system according to any one of the preceding claims, characterized in that the enclosure (2) comprises a removable cover (6) to facilitate changing the cartridge.
7. Système de piégeage selon la revendication 6, caractérisé en ce que le couvercle (6) est fixé par boulonnage (7) sur le reste de l’enceinte (2). 7. Trapping system according to claim 6, characterized in that the cover (6) is fixed by bolting (7) to the rest of the enclosure (2).
8. Système de piégeage selon l’une quelconque des revendications précédentes, caractérisé en ce que la cartouche (3) comporte un panier (8) dans lequel sont placées des pastilles de piégeage en céramique (9). 8. Trapping system according to any one of the preceding claims, characterized in that the cartridge (3) comprises a basket (8) in which ceramic trapping pellets (9) are placed.
9. Système de piégeage selon la revendication 7, caractérisé en ce que les pastilles (9) sont réalisées dans un matériau choisi dans le groupe comprenant de la cérine, de l’alumine ou de la zircone. 9. Trapping system according to claim 7, characterized in that the pellets (9) are made of a material chosen from the group comprising ceria, alumina or zirconia.
10. Système de production d'hydrogène comportant un système de piégeage de silice selon l’une quelconque des revendications précédentes. 10. A hydrogen production system comprising a silica trapping system according to any preceding claim.
PCT/EP2022/054759 2021-02-25 2022-02-25 System for trapping silica and hydrogen production system comprising such a system WO2022180200A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FRFR2101818 2021-02-25
FR2101818A FR3119994A1 (en) 2021-02-25 2021-02-25 SILICA TRAP SYSTEM AND HYDROGEN PRODUCTION SYSTEM COMPRISING SUCH SYSTEM

Publications (1)

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WO2022180200A1 true WO2022180200A1 (en) 2022-09-01

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050237A (en) * 1974-03-11 1977-09-27 Pall Corporation Demister assembly for removing liquids from gases
GB2056307A (en) * 1979-08-21 1981-03-18 Engineering Components Ltd Air cleaner
US20080041026A1 (en) * 2006-08-18 2008-02-21 Engel Donald F Air cleaner assembly; components; and, methods
US20140373494A1 (en) * 2013-06-25 2014-12-25 Kristopher W. Lepine Air Filter and Inlet Tube Assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050237A (en) * 1974-03-11 1977-09-27 Pall Corporation Demister assembly for removing liquids from gases
GB2056307A (en) * 1979-08-21 1981-03-18 Engineering Components Ltd Air cleaner
US20080041026A1 (en) * 2006-08-18 2008-02-21 Engel Donald F Air cleaner assembly; components; and, methods
US20140373494A1 (en) * 2013-06-25 2014-12-25 Kristopher W. Lepine Air Filter and Inlet Tube Assembly

Also Published As

Publication number Publication date
FR3119994A1 (en) 2022-08-26

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