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:
-
- 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):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- 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 = {Sun Jan 01 00:00:00 EST 1989},
month = {Sun Jan 01 00:00:00 EST 1989}
}