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Title: 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):
9,101,877
Application Number:
13/453,013
Assignee:
Siemens Energy, Inc. (Orlando, FL)
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 = {2015},
month = {8}
}

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