Method and system for reducing mercury emissions in flue gas

Details Method and system for reducing mercury emissions in flue gas Method and system for reducing mercury emissions in flue gas

2008-02-26

2010-11-16

Lawrence, Frank M (Department: 1797)

Gas separation: processes

Solid sorption

Moving sorbent

C110S203000, C110S345000

Reexamination Certificate

active

07833315

ABSTRACT:
Method and a system for capturing mercury in a flue gas are provided. The method includes partially oxidizing a carbonaceous solid fuel in a gasifier such that a thermally activated carbon-containing solid sorbent and gaseous gasification products are generated wherein the gasifier is proximate to a combustion system for combusting a mercury containing fuel. The method further includes storing the generated thermally activated carbon-containing solid sorbent proximate to the combustion system and combusting a mercury containing fuel in a combustion zone of the combustion system wherein mercury released during combustion is entrained in flue gas generated by the combustion. The method also includes injecting the thermally activated solid sorbent in the flue gas downstream of the combustion zone and absorbing at least a portion of the entrained mercury on the thermally activated solid sorbent.

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