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Title: Alkaline sorbent injection for mercury control

A mercury removal system for removing mercury from combustion flue gases is provided in which alkaline sorbents at generally extremely low stoichiometric molar ratios of alkaline earth or an alkali metal to sulfur of less than 1.0 are injected into a power plant system at one or more locations to remove at least between about 40% and 60% of the mercury content from combustion flue gases. Small amounts of alkaline sorbents are injected into the flue gas stream at a relatively low rate. A particulate filter is used to remove mercury-containing particles downstream of each injection point used in the power plant system.
Authors:
 [1] ;  [2]
  1. (Boardman, OH)
  2. (Washington Township, Stark County, OH)
Publication Date:
OSTI Identifier:
875084
Report Number(s):
US 6528030
DOE Contract Number:
FC22-94PC94251
Resource Type:
Patent
Research Org:
BABCOCK & WILCOX CO
Country of Publication:
United States
Language:
English
Subject:
alkaline; sorbent; injection; mercury; control; mercury; removal; removing; mercury; combustion; flue; gases; provided; alkaline; sorbents; extremely; stoichiometric; molar; ratios; alkaline; earth; alkali; metal; sulfur; 10; injected; power; plant; locations; remove; 40; 60; mercury; content; combustion; flue; gases; amounts; alkaline; sorbents; injected; flue; gas; stream; rate; particulate; filter; remove; mercury-containing; particles; downstream; injection; power; plant; alkali metal; gas stream; alkaline earth; power plant; power plant; flue gas; flue gas; flue gas; molar ratio; flue gases /423/