Black water recycle circulation loop use with a gasifier

C - Chemistry – Metallurgy – 10 – J

Patent

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Details

C10J 3/08 (2006.01) C02F 9/00 (2006.01) C10J 3/46 (2006.01) C10J 3/84 (2006.01) C02F 3/06 (2006.01)

Patent

CA 2442060

The present invention is generally directed to handling the raw syngas scrubbing wastewaters, or black water, from a quench gasification reactor. More particularly, the present invention describes recirculation of the black water in a recirculation loop from which at least a portion of the moderator used in the gasifier may be taken. The use of a recirculation loop for the black water permits the operation of the gasifier in situations such as when a source of high pressure steam is inadequate. The present invention also permits the service and maintenance of the black water treatment system while permitting the continued operation of the gasifier.

L'invention se rapporte de manière générale à la manipulation des eaux résiduaires par lavage des gaz de synthèse bruts, ou eaux usées, provenant d'un réacteur à gazéification par refroidissement. L'invention porte plus particulièrement sur la recirculation des eaux usées dans une boucle de recirculation à partir de laquelle au moins une partie du modérateur utilisée dans le gazéificateur peut être saisie. L'utilisation d'une boucle de recirculation pour les eaux usées permet la mise en marche du gazéificateur dans des situations telles que l'inadéquation d'une source de vapeur haute pression. L'invention concerne en outre le service et la maintenance du système de traitement des eaux usées et assure le fonctionnement en continu du gazéificateur.

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