ATS (ammonium thiosulfate) Claus tail-gas cleanup process

Conference · Tue Jan 01 04:00:00 EST 1980 · AIChE Pap.; (United States)

OSTI ID:6466283

Zey, A ^[1]; White, S; Johnson, D

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1. Pritchard Corp.

The ATS (ammonium thiosulfate) Claus tail-gas cleanup process was developed by the Pritchard Corp. and installed for Colorado Interstate Gas Corp. (CIG) and Wycon Chemical Co. at CIG's Table Rock, Wyo., natural gas-treatment plant to process tail gas from an 80 ton/day Claus plant. The new unit will produce 18,140 tons/yr of ammonium thiosulfate fertilizer solution. In the first, absorption stage, sulfur dioxide is removed from the incinerated Claus tail gas by scrubbing with aqueous ammonia after recovering the waste heat as high-pressure steam. In the second, conversion stage, the ammonium sulfite solution from the sulfur dioxide absorber is converted to ammonium thiosulfate by contacting with hydrogen sulfide. The new plant, which started up in Feb. 1980, has a sulfur dioxide emission rate of 1000 ppm by vol, but the process can be modified to limit the sulfur dioxide emissions to less than 250 ppm. The process can be added to existing or new facilities. Its application is limited only by the market for ammonium thiosulfate fertilizer. The process chemistry, mechanical design, and the construction materials are described in detail.

• OSTI ID: 6466283
• Report Number(s): CONF-800610-
• Conference Information: Journal Name: AIChE Pap.; (United States) Journal Volume: 53B
• Country of Publication: United States
• Language: English

Related Subjects

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
AIR POLLUTION CONTROL
AMMONIUM COMPOUNDS
AMMONIUM SULFATES
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CLAUS PROCESS
CONTROL
DESULFURIZATION
EQUIPMENT
FERTILIZERS
INDUSTRY
MANAGEMENT
NATURAL GAS INDUSTRY
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
PROCESSING
PRODUCTION
REMOVAL
SCRUBBERS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING