Hydrogen and sulfur recovery from hydrogen sulfide wastes

Patent · Tue May 18 04:00:00 EDT 1993

OSTI ID:6304741

Harkness, J B.L.; Gorski, A J; Daniels, E J

A process is described for generating hydrogen and elemental sulfur from hydrogen sulfide waste in which the hydrogen sulfide is [dis]associated under plasma conditions and a portion of the hydrogen output is used in a catalytic reduction unit to convert sulfur-containing impurities to hydrogen sulfide for recycle, the process also including the addition of an ionizing gas such as argon to initiate the plasma reaction at lower energy, a preheater for the input to the reactor and an internal adjustable choke in the reactor for enhanced coupling with the microwave energy input.

• DOE Contract Number: W-31109-ENG-38
• Assignee: Univ. of Chicago, IL (United States)
• Patent Number(s): US 5211923; A
• Application Number: PPN: US 7-739029
• OSTI ID: 6304741
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
03 NATURAL GAS
030700 -- Natural Gas-- Waste Management
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMICAL REACTORS
DISSOCIATION
ELEMENTS
HEATING
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IMPURITIES
MANAGEMENT
MATERIALS RECOVERY
NONMETALS
PLASMA HEATING
PROCESSING
RECYCLING
REDUCTION
SULFIDES
SULFUR
SULFUR COMPOUNDS
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION