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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. 3 figs.
Authors:
; ;
Publication Date:
OSTI Identifier:
5547551
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Research Org:
Argonne National Lab., IL (USA)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 54 ENVIRONMENTAL SCIENCES; 42 ENGINEERING; FLUE GAS; DENITRIFICATION; DESULFURIZATION; NITRIC OXIDE; AIR POLLUTION CONTROL; SULFUR DIOXIDE; ADDITIVES; AMINES; CHELATES; EDTA; IRON COMPLEXES; REMOVAL; SCRUBBERS; SODIUM CARBONATES; SULFONATES; ZINC COMPLEXES; ALKALI METAL COMPOUNDS; AMINO ACIDS; CARBON COMPOUNDS; CARBONATES; CARBOXYLIC ACIDS; CHALCOGENIDES; CHELATING AGENTS; CHEMICAL REACTIONS; COMPLEXES; CONTROL; EQUIPMENT; GASEOUS WASTES; NITROGEN COMPOUNDS; NITROGEN OXIDES; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POLLUTION CONTROL; POLLUTION CONTROL EQUIPMENT; SODIUM COMPOUNDS; SULFUR COMPOUNDS; SULFUR OXIDES; TRANSITION ELEMENT COMPLEXES; WASTES 010800* -- Coal, Lignite, & Peat-- Waste Management; 500200 -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989); 424000 -- Engineering-- Pollution Control Equipment-- (1980-1989); 500200 -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989)