Propane extraction treats refinery wastes to BDAT standards

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[1] de Filippi, Richard
[2] Markiewicz, John
来源：
de Filippi, Richard | 1600年 / 89期
关键词：
Environmental Protection - Industrial Wastes--Solvent Extraction - Legislation - Petroleum Refineries--Wastes - Propane;
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摘要：
The first commercial solvent-extraction unit for treatment of refinery hazardous wastes has been operaing sucessfully since March 17. The full-scale unit is continuously treating hazardous-waste sludges to meet U.S. Environmental Protection Agency specifications for land-disposable wastes at a major Gulf Coast refinery at Port Arthur, Texas. The unit, based on solvent extraction, uses liquid propane as the solvent. The unit operates in seven basic steps encompassing extraction, phase separation, and solvent recovery.
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