Emission free integrated gasification combined cycle

Details Emission free integrated gasification combined cycle Emission free integrated gasification combined cycle

C - Chemistry, Metallurgy

10

J

C10J 3/00 (2006.01) F01K 23/06 (2006.01) F02C 3/28 (2006.01)

Patent

CA 2682319

Disclosed is a process to start-up, operate, and shut down a gasifier and an integrated gasification combined cycle complex without flaring while additionally reducing the release of contaminants such as carbon monoxide, hydrogen sulfide, and nitrogen oxides. The process is accomplished by scrubbing ventable sour gases and passing scrubbed sour gases and ventable sweet gases to a vent gas combustor for controlled combustion prior to release of any such gases to the atmosphere. Additionally, the gases are subjected to a CO oxidation treatment and selective catalytic reduction treatment prior to release to the atmosphere.

L'invention concerne un procédé permettant de démarrer, de faire fonctionner et de fermer un gazéificateur et un complexe de cycle combiné à gazéification intégrée sans torchage tout en réduisant en outre la libération de contaminants comme le monoxyde de carbone, le sulfure d'hydrogène et les oxydes d'azote. Le procédé est réalisé en épurant des gaz sulfureux pouvant devenir des gaz d'évent et en transférant les gaz sulfureux épurés et des gaz non corrosifs pouvant devenir des gaz d'évent à un brûleur de gaz d'évent pour une combustion contrôlée avant la libération de l'un quelconque de ces gaz dans l'atmosphère. En outre, les gaz sont soumis à un traitement d'oxydation de l'oxyde de carbone et à un traitement de réduction catalytique sélective avant la libération dans l'atmosphère.

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