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Title: Exhaust gas clean up process

Abstract

A method of cleaning an exhaust gas containing particulates, SO.sub.2 and NO.sub.x includes prescrubbing with water to remove HCl and most of the particulates, scrubbing with an aqueous absorbent containing a metal chelate and dissolved sulfite salt to remove NO.sub.x and SO.sub.2, and regenerating the absorbent solution by controlled heating, electrodialysis and carbonate salt addition. The NO.sub.x is removed as N.sub.2 or nitrogen-sulfonate ions and the oxides of sulfur are removed as a vaulable sulfate salt.

Inventors:
 [1]
  1. McMurray, PA
Issue Date:
Research Org.:
USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
OSTI Identifier:
866912
Patent Number(s):
4820391
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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:
exhaust; gas; clean; process; method; cleaning; containing; particulates; prescrubbing; water; remove; hcl; scrubbing; aqueous; absorbent; metal; chelate; dissolved; sulfite; salt; regenerating; solution; controlled; heating; electrodialysis; carbonate; addition; removed; nitrogen-sulfonate; oxides; sulfur; vaulable; sulfate; absorbent solution; gas containing; exhaust gas; metal chelate; sulfate salt; remove hcl; gas clean; containing particulate; sorbent containing; carbonate salt; aqueous absorbent; containing particulates; /204/423/

Citation Formats

Walker, Richard J. Exhaust gas clean up process. United States: N. p., 1989. Web.
Walker, Richard J. Exhaust gas clean up process. United States.
Walker, Richard J. Sun . "Exhaust gas clean up process". United States. https://www.osti.gov/servlets/purl/866912.
@article{osti_866912,
title = {Exhaust gas clean up process},
author = {Walker, Richard J},
abstractNote = {A method of cleaning an exhaust gas containing particulates, SO.sub.2 and NO.sub.x includes prescrubbing with water to remove HCl and most of the particulates, scrubbing with an aqueous absorbent containing a metal chelate and dissolved sulfite salt to remove NO.sub.x and SO.sub.2, and regenerating the absorbent solution by controlled heating, electrodialysis and carbonate salt addition. The NO.sub.x is removed as N.sub.2 or nitrogen-sulfonate ions and the oxides of sulfur are removed as a vaulable sulfate salt.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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