Destruction of acid gas emissions
Abstract
A method of destroying NO.sub.x and SO.sub.2 in a combustion gas in disclosed. The method includes generating active species by treating stable moleucles in a high temperature plasma. Ammonia, methane, steam, hydrogen, nitrogen or a combination of these gases can be selected as the stable molecules. The gases are subjected to plasma conditions sufficient to create free radicals, ions or excited atoms such as N, NH, NH.sub.2, OH.sup.-, CH and/or CH.sub.2. These active species are injected into a combustion gas at a location of sufficiently high temperature to maintain the species in active state and permit them to react with NO.sub.x and SO.sub.2. Typically the injection is made into the immediate post-combustion gases at temperatures of 475.degree.-950.degree. C.
- Inventors:
-
- Pittsburgh, PA
- Muroran, JP
- Issue Date:
- Research Org.:
- USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
- OSTI Identifier:
- 867844
- Patent Number(s):
- 5020457
- 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
F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23J - REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- destruction; acid; gas; emissions; method; destroying; combustion; disclosed; generating; active; species; treating; stable; moleucles; temperature; plasma; ammonia; methane; steam; hydrogen; nitrogen; combination; gases; selected; molecules; subjected; conditions; sufficient; create; free; radicals; excited; atoms; nh; oh; injected; location; sufficiently; maintain; permit; react; typically; injection; immediate; post-combustion; temperatures; 475; degree; -950; free radical; combustion gases; combustion gas; free radicals; acid gas; plasma conditions; conditions sufficient; temperature plasma; active species; gas emissions; /110/423/431/
Citation Formats
Mathur, Mahendra P, Fu, Yuan C, Ekmann, James M, and Boyle, John M. Destruction of acid gas emissions. United States: N. p., 1991.
Web.
Mathur, Mahendra P, Fu, Yuan C, Ekmann, James M, & Boyle, John M. Destruction of acid gas emissions. United States.
Mathur, Mahendra P, Fu, Yuan C, Ekmann, James M, and Boyle, John M. Tue .
"Destruction of acid gas emissions". United States. https://www.osti.gov/servlets/purl/867844.
@article{osti_867844,
title = {Destruction of acid gas emissions},
author = {Mathur, Mahendra P and Fu, Yuan C and Ekmann, James M and Boyle, John M},
abstractNote = {A method of destroying NO.sub.x and SO.sub.2 in a combustion gas in disclosed. The method includes generating active species by treating stable moleucles in a high temperature plasma. Ammonia, methane, steam, hydrogen, nitrogen or a combination of these gases can be selected as the stable molecules. The gases are subjected to plasma conditions sufficient to create free radicals, ions or excited atoms such as N, NH, NH.sub.2, OH.sup.-, CH and/or CH.sub.2. These active species are injected into a combustion gas at a location of sufficiently high temperature to maintain the species in active state and permit them to react with NO.sub.x and SO.sub.2. Typically the injection is made into the immediate post-combustion gases at temperatures of 475.degree.-950.degree. C.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}