Selective catalytic reduction system and process for control of NO.sub.x emissions in a sulfur-containing gas stream
Abstract
An exhaust gas treatment process, apparatus, and system for reducing the concentration of NOx, CO and hydrocarbons in a gas stream, such as an exhaust stream (29), via selective catalytic reduction with ammonia is provided. The process, apparatus and system include a catalytic bed (32) having a reducing only catalyst portion (34) and a downstream reducing-plus-oxidizing portion (36). Each portion (34, 36) includes an amount of tungsten. The reducing-plus-oxidizing catalyst portion (36) advantageously includes a greater amount of tungsten than the reducing catalyst portion (36) to markedly limit ammonia salt formation.
- Inventors:
- Issue Date:
- Research Org.:
- Siemens Energy, Inc., Orlando, FL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1209482
- Patent Number(s):
- 9101877
- Application Number:
- 13/453,013
- Assignee:
- Siemens Energy, Inc. (Orlando, FL)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
- DOE Contract Number:
- FC26-05NT42644
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2012 Apr 23
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Sobolevskiy, Anatoly. Selective catalytic reduction system and process for control of NO.sub.x emissions in a sulfur-containing gas stream. United States: N. p., 2015.
Web.
Sobolevskiy, Anatoly. Selective catalytic reduction system and process for control of NO.sub.x emissions in a sulfur-containing gas stream. United States.
Sobolevskiy, Anatoly. Tue .
"Selective catalytic reduction system and process for control of NO.sub.x emissions in a sulfur-containing gas stream". United States. https://www.osti.gov/servlets/purl/1209482.
@article{osti_1209482,
title = {Selective catalytic reduction system and process for control of NO.sub.x emissions in a sulfur-containing gas stream},
author = {Sobolevskiy, Anatoly},
abstractNote = {An exhaust gas treatment process, apparatus, and system for reducing the concentration of NOx, CO and hydrocarbons in a gas stream, such as an exhaust stream (29), via selective catalytic reduction with ammonia is provided. The process, apparatus and system include a catalytic bed (32) having a reducing only catalyst portion (34) and a downstream reducing-plus-oxidizing portion (36). Each portion (34, 36) includes an amount of tungsten. The reducing-plus-oxidizing catalyst portion (36) advantageously includes a greater amount of tungsten than the reducing catalyst portion (36) to markedly limit ammonia salt formation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 11 00:00:00 EDT 2015},
month = {Tue Aug 11 00:00:00 EDT 2015}
}
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