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Title: Removal of sulfur and nitrogen containing pollutants from discharge gases

Abstract

Oxides of sulfur and of nitrogen are removed from waste gases by reaction with an unsupported copper oxide powder to form copper sulfate. The resulting copper sulfate is dissolved in water to effect separation from insoluble mineral ash and dried to form solid copper sulfate pentahydrate. This solid sulfate is thermally decomposed to finely divided copper oxide powder with high specific surface area. The copper oxide powder is recycled into contact with the waste gases requiring cleanup. A reducing gas can be introduced to convert the oxide of nitrogen pollutants to nitrogen.

Inventors:
 [1]
  1. Pittsburgh, PA
Issue Date:
Research Org.:
USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
OSTI Identifier:
865841
Patent Number(s):
4587113
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
removal; sulfur; nitrogen; containing; pollutants; discharge; gases; oxides; removed; waste; reaction; unsupported; copper; oxide; powder; form; sulfate; resulting; dissolved; water; effect; separation; insoluble; mineral; ash; dried; solid; pentahydrate; thermally; decomposed; finely; divided; specific; surface; recycled; contact; requiring; cleanup; reducing; gas; introduced; convert; specific surface; thermally decomposed; waste gases; reducing gas; waste gas; copper oxide; finely divided; oxide powder; nitrogen containing; mineral ash; form solid; thermally decompose; effect separation; discharge gas; copper sulfate; resulting copper; discharge gases; /423/

Citation Formats

Joubert, James I. Removal of sulfur and nitrogen containing pollutants from discharge gases. United States: N. p., 1986. Web.
Joubert, James I. Removal of sulfur and nitrogen containing pollutants from discharge gases. United States.
Joubert, James I. Wed . "Removal of sulfur and nitrogen containing pollutants from discharge gases". United States. https://www.osti.gov/servlets/purl/865841.
@article{osti_865841,
title = {Removal of sulfur and nitrogen containing pollutants from discharge gases},
author = {Joubert, James I},
abstractNote = {Oxides of sulfur and of nitrogen are removed from waste gases by reaction with an unsupported copper oxide powder to form copper sulfate. The resulting copper sulfate is dissolved in water to effect separation from insoluble mineral ash and dried to form solid copper sulfate pentahydrate. This solid sulfate is thermally decomposed to finely divided copper oxide powder with high specific surface area. The copper oxide powder is recycled into contact with the waste gases requiring cleanup. A reducing gas can be introduced to convert the oxide of nitrogen pollutants to nitrogen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

Patent:

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