Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Elemental sulfur recovery process

Patent ·
OSTI ID:868911
 [1];  [2]
  1. Winchester, MA
  2. Somerville, MA
+ Show Author Affiliations
An improved catalytic reduction process for the direct recovery of elemental sulfur from various SO.sub.2 -containing industrial gas streams. The catalytic process provides combined high activity and selectivity for the reduction of SO.sub.2 to elemental sulfur product with carbon monoxide or other reducing gases. The reaction of sulfur dioxide and reducing gas takes place over certain catalyst formulations based on cerium oxide. The process is a single-stage, catalytic sulfur recovery process in conjunction with regenerators, such as those used in dry, regenerative flue gas desulfurization or other processes, involving direct reduction of the SO.sub.2 in the regenerator off gas stream to elemental sulfur in the presence of a catalyst.
Research Organization:
Arthur D Little Inc
DOE Contract Number:
AC22-89PC89805
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Number(s):
US 5242673
OSTI ID:
868911
Country of Publication:
United States
Language:
English

References (6)

Preparation of Cerium Dioxide Powders for Catalyst Supports journal February 1988
Removal of Sulfur Dioxide from Stack Gases by Catalytic Reduction to Elemental Sulfur with Carbon Monoxide journal January 1973
Catalytic Reduction of Sulfur Dioxide on Iron-Alumina Bifunctional Catalysts journal June 1971
The Allied Chemical Sulfur Dioxide Reduction Process for Metallurgical Emissions book April 1975
Catalytic Reduction of Sulfur Dioxide with Carbon Monoxide on Cobalt Oxides journal December 1975
Flue gas desulphurisation: Catalytic removal of sulphur dioxide by carbon monoxide on sulphided La1−xSrxCoO3 journal July 1988

Similar Records

Elemental sulfur recovery process
Patent · Tue Sep 07 00:00:00 EDT 1993 · OSTI ID:5351441
Selective catalytic reduction of sulfur dioxide to elemental sulfur
Technical Report · Tue Dec 31 23:00:00 EST 1991 · OSTI ID:6666173
Selective catalytic reduction of sulfur dioxide to elemental sulfur. Quarterly technical progress report No. 2, October--December 1992
Technical Report · Wed Dec 30 23:00:00 EST 1992 · OSTI ID:10142599

Related Subjects

-containing
-containing industrial
/423/
activity
based
carbon
carbon monoxide
catalyst
catalyst formulations
catalytic
catalytic process
catalytic reduction
cerium
cerium oxide
combined
conjunction
desulfurization
dioxide
direct
direct recovery
direct reduction
dry
elemental
elemental sulfur
flue
flue gas
formulations
gas
gas desulfurization
gas stream
gas streams
gases
improved
improved catalytic
industrial
industrial gas
involving
monoxide
oxide
presence
process
process provides
processes
product
provides
reaction
recovery
recovery process
reducing
reducing gas
reducing gases
reduction
reduction process
regenerative
regenerator
regenerators
selectivity
single-stage
stream
streams
sulfur
sulfur dioxide
sulfur product
sulfur recovery
takes
various