Method for desulphurisation of natural gas

C - Chemistry – Metallurgy – 10 – L

Patent

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Details

C10L 3/10 (2006.01) B01J 20/02 (2006.01) B01J 20/12 (2006.01) B01J 20/32 (2006.01)

Patent

CA 2484713

The invention relates to a method for the removal of gaseous organo-sulphur compounds, in particular THT, from fuel gas streams. The method comprises bringing the gas stream into contact with an adsorbent, with a clay mineral from the hormite group, such as palygorskite. attapulgite, sepiolite and paramomtmorillonite as adorbent. In particular, the clay mineral is sepiolite and the fuel gas stream comprises natural gas. In this way large gas volumes can be purified for a prolonged period with the aid of an environmenetally friendly and inexpensive adsorbent. The invention also relates to a combination of a gas filter based on a clay mineral from the hormite group and a fuel cell. The invention also relates to a method wherein the clay mineral has been provided with a metal salt or a metal oxide, or a method wherein the clay mineral is combined with a second adsorbent.

L'invention concerne un procédé permettant d'éliminer des composés d'organo-sulfure gazeux, en particulier du tétrahydrothiophène (THT), des flux de gaz combustible. Ledit procédé comprend la mise en contact du flux gazeux avec un adsorbant, un minéral argileux du groupe de la hormite, tel que la palygorskite, l'attalpulgite, la sépiolite, et la parmontmorillonite, étant utilisé en tant qu'adsorbant. Ledit minéral argileux utilisé est, en particulier, la sépiolite et le flux de gaz combustible comprend du gaz naturel. De cette manière, d'importants volumes de gaz peuvent être purifiés à l'aide d'un adsorbant respectueux de l'environnement et peu coûteux. L'invention concerne également la combinaison d'un filtre à essence à base d'un minéral argileux du groupe de la hormite et d'une pile à combustible. L'invention concerne, de plus, un procédé, selon lequel le minéral argileux est associé à un sel métallique ou un procédé, selon lequel le minéral argileux est combiné avec un second adsorbant.

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