C - Chemistry – Metallurgy – 10 – K
Patent
C - Chemistry, Metallurgy
10
K
C10K 1/32 (2006.01) C10K 1/26 (2006.01)
Patent
CA 2122523
ABSTRACT OF THE DISCLOSURE A hot gas cleanup system for removing particulates, alkali and sulfur from fuel gas produced by the gasification of coal in a gasifier, especially in an integrated gas turbine gasification power plant. A calcium based sulfur sorbent and an alkali sorbent are injected directly into the fuel gas and then recovered, along with the used sorbent, in a high efficiency, high temperature ceramic barrier filter. The fuel gas is then subjected to further de-sulfurization in a polishing de-sulfurizer supplied with a copper based sulfur sorbent. The used copper based sorbent is regenerated in fluidized bed regenerator. The regenerated sorbent is returned to the polishing de-sulfurizer and sulfur dioxide produced by the regeneration is directed to an oxidizer to which the used and unused sulfur sorbent from the filter is supplied so that the sulfur dioxide can be captured and so that the used sulfur sorbent can be converted to a more stable form for disposal.
Bereskin & Parr
Westinghouse Electric Corporation
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