Treatment and testing of wastewaters and slags from the British Gas/Lurgi (BGL) Gasifier
- British Gas plc, London (United Kingdom)
The BGL moving-bed, slagging gasification process is an extension of the commercially proven Lurgi dry ash, moving-bed gasification process. British Gas and Lurgi have demonstrated the process over an 11-year period at the 350 and 500 t/d scale at British Gas' Westfield Development Center, Scotland, with a wide variety of US and UK coals. Objectives are: to collect and characterize wastewaters and slags produced from the gasification of US bituminous coals in the BGL gasification process; to provide data for use in the design of treatability and disposal processes for wastewaters and slags produced in commercial coal gasification-based power plants. EPRI, the Gas Research Institute, British Gas, Lurgi, and the Commission of the European Communities cofunded the testing of Pittsburgh no. 8 and Illinois no. 6 coals in the 500 t/d BGL gasifier. As a part of the test program, wastewaters (aqueous liquors) and slags were collected and characterized. The wastewaters were conventionally treated by solvent extraction, steam stripping, biological oxidation, and activated carbon adsorption in a 1 t/d pilot plant, and the use of reverse osmosis (RO) as the final stage was demonstrated at the laboratory scale. Pittsburgh coal-derived wastewater was also treated using an incineration route. Leaching and iron removal tests were performed on the slags; and the fate of trace elements, primarily introduced into the gasifier from the coal, was determined.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); British Gas plc, London (United Kingdom); Lurgi GmbH, Frankfurt am Main (Germany)
- Sponsoring Organization:
- EPRI; Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 5899731
- Report Number(s):
- EPRI-GS-7092
- Country of Publication:
- United States
- Language:
- English
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Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COAL
COAL GASIFICATION
COAL GASIFICATION PLANTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASIFICATION
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
LIQUID WASTES
LURGI CFB GASIFICATION PROCESS
MANAGEMENT
MATERIALS
OXYGEN COMPOUNDS
POLLUTION
SLAGS
SOLID WASTES
THERMOCHEMICAL PROCESSES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE WATER
WASTES
WATER
WATER POLLUTION
WATER TREATMENT