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Title: Selective catalytic reduction of sulfur dioxide to elemental sulfur

Abstract

Elemental sulfur recovery from SO[sub 2]-containing gas streams is highly attractive as it produces a saleable. Product and no waste to dispose of. However, commercially available schemes are complex and involve multi-stage reactors, such as, most notably in the Resox (reduction of SO[sub 2] with coke) and Claus plants(reaction of SO[sub 2] with H[sub 2]S over catalyst). This project win investigate a cerium oxide catalyst for the single-stage selective reduction SO[sub 2] to elemental sulfur by a reductant, such as carbon monoxide. Cerium oxide has been identified as a superior catalyst for SO[sub 2] reduction by CO to elemental sulfur because of its high activity and high selectivity to sulfur over COS over a wide temperature range(400--650C). Kinetic and parametric studies of SO[sub 2] reduction planned over various CeO[sub 2]-formulations will provide the necessary basis for development of a simplified process, a single-stage elemental sulfur recovery scheme from variable concentration gas streams. A first apparent application is treatment of regenerator off-gases in power plants using regenerative flue gas desulfurization. Such a simple catalytic converter may offer the long-sought Claus-alternative'' for coal-fired power plant applications.

Authors:
; ;
Publication Date:
Research Org.:
Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Chemical Engineering
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6666173
Report Number(s):
DOE/PC/92534-T1
ON: DE93010851
DOE Contract Number:  
FG22-92PC92534
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 20 FOSSIL-FUELED POWER PLANTS; 01 COAL, LIGNITE, AND PEAT; CARBON MONOXIDE; OXIDATION; CARBON OXYSULFIDE; HYDROLYSIS; CERIUM OXIDES; CATALYTIC EFFECTS; FLUE GAS; DESULFURIZATION; SULFUR; MATERIALS RECOVERY; SULFUR DIOXIDE; REDUCTION; CHEMICAL ACTIVATION; CLAUS PROCESS; PROGRESS REPORT; REGENERATION; WATER GAS PROCESSES; CARBON COMPOUNDS; CARBON OXIDES; CERIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; DECOMPOSITION; DOCUMENT TYPES; ELEMENTS; GASEOUS WASTES; LYSIS; MANAGEMENT; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PROCESSING; RARE EARTH COMPOUNDS; SOLVOLYSIS; SULFUR COMPOUNDS; SULFUR OXIDES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; 540120* - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-); 200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions; 010800 - Coal, Lignite, & Peat- Waste Management

Citation Formats

Liu, Wei, Flytzani-Stephanopoulos, M, and Sarofim, A F. Selective catalytic reduction of sulfur dioxide to elemental sulfur. United States: N. p., 1992. Web. doi:10.2172/6666173.
Liu, Wei, Flytzani-Stephanopoulos, M, & Sarofim, A F. Selective catalytic reduction of sulfur dioxide to elemental sulfur. United States. https://doi.org/10.2172/6666173
Liu, Wei, Flytzani-Stephanopoulos, M, and Sarofim, A F. 1992. "Selective catalytic reduction of sulfur dioxide to elemental sulfur". United States. https://doi.org/10.2172/6666173. https://www.osti.gov/servlets/purl/6666173.
@article{osti_6666173,
title = {Selective catalytic reduction of sulfur dioxide to elemental sulfur},
author = {Liu, Wei and Flytzani-Stephanopoulos, M and Sarofim, A F},
abstractNote = {Elemental sulfur recovery from SO[sub 2]-containing gas streams is highly attractive as it produces a saleable. Product and no waste to dispose of. However, commercially available schemes are complex and involve multi-stage reactors, such as, most notably in the Resox (reduction of SO[sub 2] with coke) and Claus plants(reaction of SO[sub 2] with H[sub 2]S over catalyst). This project win investigate a cerium oxide catalyst for the single-stage selective reduction SO[sub 2] to elemental sulfur by a reductant, such as carbon monoxide. Cerium oxide has been identified as a superior catalyst for SO[sub 2] reduction by CO to elemental sulfur because of its high activity and high selectivity to sulfur over COS over a wide temperature range(400--650C). Kinetic and parametric studies of SO[sub 2] reduction planned over various CeO[sub 2]-formulations will provide the necessary basis for development of a simplified process, a single-stage elemental sulfur recovery scheme from variable concentration gas streams. A first apparent application is treatment of regenerator off-gases in power plants using regenerative flue gas desulfurization. Such a simple catalytic converter may offer the long-sought Claus-alternative'' for coal-fired power plant applications.},
doi = {10.2172/6666173},
url = {https://www.osti.gov/biblio/6666173}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}