High temperature desulfurization of synthesis gas

Patent · Tue Nov 14 00:00:00 EST 1989

OSTI ID:6961843

Najjar, M S; Robin, A M

This patent describes a continuous process for the production of desulfurized synthesis gas, fuel gas, or reducing gas. It includes: reacting sulfur-containing heavy liquid hydrocarbonaceous fuel and/or sulfur-containing solid carbonaceous fuel by partial oxidation with a free-oxygen containing gas and in the presence of a temperature moderator to produce a hot steam of synthesis gas, reducing gas, or fuel gas comprising H{sub 2}, CO, CO{sub 2}, H{sub 2}S, COS and at least one gaseous material selected form the group consisting of H{sub 2}O, N{sub 2}, CH{sub 4}, NH{sub 3}, Ar, and containing entrained material comprising particulate carbon, and molten slag; cooling the process gas stream to a temperature in the range of about 1800{degrees}F. to 1200{degrees} F. while solidifying the molten slag; contacting the sulfur-containing gas in the process gas stream in the radiant cooler with a calcium-containing material after substantially all of the molten slag has solidified; reacting in the radiant cooler the calcium-containing material with sulfur-containing constituents in the gas stream to produce particulate matter comprising calcium sulfide; and discharging from the radiant cooler a partially cooled process stream of synthesis gas, or fuel gas containing entrained calcium sulfide particulate matter, particulate carbon, and slag; and in comparison with a gas stream produced without the introduction of the calcium containing additive.

• Assignee: Texaco Inc., White Plains, NY
• Patent Number(s): US 4880439; A
• Application Number: PPN: US 7-190707A
• OSTI ID: 6961843
• Resource Relation: Patent File Date: 5 May 1988
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
54 ENVIRONMENTAL SCIENCES
FUEL GAS
DESULFURIZATION
SYNTHESIS GAS
AIR POLLUTION ABATEMENT
PARTIAL OXIDATION PROCESSES
CHEMICAL REACTIONS
FLUIDS
FUELS
GAS FUELS
GASES
POLLUTION ABATEMENT
THERMOCHEMICAL PROCESSES
030300* - Natural Gas- Drilling
Production
& Processing
030800 - Natural Gas- Environmental Aspects
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)