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Title: Flue gas desulfurization/denitrification using metal-chelate additives

A method of simultaneously removing SO.sub.2 and NO from oxygen-containing flue gases resulting from the combustion of carbonaceous material by contacting the flue gas with an aqueous scrubber solution containing an aqueous sulfur dioxide sorbent and an active metal chelating agent which promotes a reaction between dissolved SO.sub.2 and dissolved NO to form hydroxylamine N-sulfonates. The hydroxylamine sulfonates are then separated from the scrubber solution which is recycled.
Authors:
 [1] ;  [2] ;  [3]
  1. (Naperville, IL)
  2. (Glen Ellyn, IL)
  3. (Deerfield, IL)
Publication Date:
OSTI Identifier:
865986
Report Number(s):
US 4612175
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Patent
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
flue; gas; desulfurization; denitrification; metal-chelate; additives; method; simultaneously; removing; oxygen-containing; flue; gases; resulting; combustion; carbonaceous; material; contacting; flue; gas; aqueous; scrubber; solution; containing; aqueous; sulfur; dioxide; sorbent; active; metal; chelating; agent; promotes; reaction; dissolved; dissolved; form; hydroxylamine; n-sulfonates; hydroxylamine; sulfonates; separated; scrubber; solution; recycled; oxide sorbent; simultaneously removing; scrubber solution; scrubber solution; metal chelating; gas desulfurization; active metal; solution containing; carbonaceous material; sulfur dioxide; chelating agent; flue gas; flue gas; flue gas; flue gases; gases resulting /423/999/