skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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)

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

Similar Records

Related Subjects

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