Pulse gasification and hot gas cleanup apparatus and process

F - Mech Eng,Light,Heat,Weapons – 23 – J

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F23J 15/00 (2006.01) C10J 3/20 (2006.01) C10J 3/56 (2006.01)

Patent

CA 2486873

A gasifier system and process comprises a pulse combustion device in communication with a fluid channel for producing a gas stream having heat or fuel value. The pulse combustion device is operated under sub-stoichiometric conditions such that combustion and steam reforming both occur in the fluid channel. The pulse combustion device also produces a pulsating combustion product stream and an acoustic pressure wave. The acoustic pressure wave serves to cause agglomeration of particles contained within the combustion stream for easy removal. In one embodiment, a sulfur capturing agent is injected into the fluid channel for not only removing sulfur from the combustion product stream but for also facilitating particle agglomeration. Ultimately, a gas stream containing hydrogen is produced that may be used in various processes, such as in the production of electricity.

L'invention concerne un système et un procédé de gazéification qui comprend un dispositif de combustion pulsatoire communiquant avec une canalisation pour fluides afin de produire un flux gazeux ayant une valeur calorifique ou combustible. Le dispositif de combustion pulsatoire fonctionne dans des conditions sub-stoechiométriques de façon que la combustion et le reformage à la vapeur interviennent toutes deux dans la canalisation pour fluides. Le dispositif de combustion pulsatoire produit également un flux de combustion pulsatoire et une onde de pression acoustique. L'onde de pression acoustique permet de provoquer l'agglomération de particules contenues dans le flux de combustion afin d'en faciliter l'évacuation. Dans un mode de réalisation, un agent capteur de soufre est injecté dans la canalisation pour fluides, non seulement pour supprimer le soufre présent dans le flux de combustion mais également pour faciliter l'agglomération des particules. Finalement, on obtient un flux gazeux contenant de l'hydrogène susceptible d'être utilisé dans divers procédés, notamment dans la production d'électricité.

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