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Title: Catalytic process for control of NO.sub.x emissions using hydrogen

Abstract

A selective catalytic reduction process with a palladium catalyst for reducing NOx in a gas, using hydrogen as a reducing agent. A zirconium sulfate (ZrO.sub.2)SO.sub.4 catalyst support material with about 0.01-2.0 wt. % Pd is applied to a catalytic bed positioned in a flow of exhaust gas at about 70-200.degree. C. The support material may be (ZrO.sub.2--SiO.sub.2)SO.sub.4. H.sub.2O and hydrogen may be injected into the exhaust gas upstream of the catalyst to a concentration of about 15-23 vol. % H.sub.2O and a molar ratio for H.sub.2/NO.sub.x in the range of 10-100. A hydrogen-containing fuel may be synthesized in an Integrated Gasification Combined Cycle power plant for combustion in a gas turbine to produce the exhaust gas flow. A portion of the fuel may be diverted for the hydrogen injection.

Inventors:
; ;
Issue Date:
Research Org.:
Siemens Energy, Inc., Orlando, FL, (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176302
Patent Number(s):
7718153
Application Number:
12/122,116
Assignee:
Siemens Energy, Inc. (Orlando, FL)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
FC26-05NT42644
Resource Type:
Patent
Resource Relation:
Patent File Date: 2008 May 16
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; 08 HYDROGEN; 54 ENVIRONMENTAL SCIENCES

Citation Formats

Sobolevskiy, Anatoly, Rossin, Joseph A., and Knapke, Michael J. Catalytic process for control of NO.sub.x emissions using hydrogen. United States: N. p., 2010. Web.
Sobolevskiy, Anatoly, Rossin, Joseph A., & Knapke, Michael J. Catalytic process for control of NO.sub.x emissions using hydrogen. United States.
Sobolevskiy, Anatoly, Rossin, Joseph A., and Knapke, Michael J. Tue . "Catalytic process for control of NO.sub.x emissions using hydrogen". United States. https://www.osti.gov/servlets/purl/1176302.
@article{osti_1176302,
title = {Catalytic process for control of NO.sub.x emissions using hydrogen},
author = {Sobolevskiy, Anatoly and Rossin, Joseph A. and Knapke, Michael J.},
abstractNote = {A selective catalytic reduction process with a palladium catalyst for reducing NOx in a gas, using hydrogen as a reducing agent. A zirconium sulfate (ZrO.sub.2)SO.sub.4 catalyst support material with about 0.01-2.0 wt. % Pd is applied to a catalytic bed positioned in a flow of exhaust gas at about 70-200.degree. C. The support material may be (ZrO.sub.2--SiO.sub.2)SO.sub.4. H.sub.2O and hydrogen may be injected into the exhaust gas upstream of the catalyst to a concentration of about 15-23 vol. % H.sub.2O and a molar ratio for H.sub.2/NO.sub.x in the range of 10-100. A hydrogen-containing fuel may be synthesized in an Integrated Gasification Combined Cycle power plant for combustion in a gas turbine to produce the exhaust gas flow. A portion of the fuel may be diverted for the hydrogen injection.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {5}
}

Works referenced in this record:

Low temperature catalytic NOx–H2 reactions over Pt/TiO2-ZrO2 in an excess oxygen
journal, December 2001


The current state of research on automotive lean NOx catalysis
journal, September 1997


Low-temperature H2-SCR of NO on a novel Pt/MgO-CeO2 catalyst
journal, March 2007