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PILOT PLANT EVALUATION OF CRITICAL FLUID EXTRACTIONS FOR ENVIRONMENTAL APPLICATIONS
Citation:
Kingsley, G. PILOT PLANT EVALUATION OF CRITICAL FLUID EXTRACTIONS FOR ENVIRONMENTAL APPLICATIONS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-85/081 (NTIS PB85233484), 1985.
Description:
The report gives results of using liquefied-gas solvents in a pilot plant study to extract oil from mill scale (a steel mill by-product) and bleaching clay (a vegetable oil filtering media). The process, operated on a semi-batch cycle, involved two extractors and a solvent recovery system. The results of the extraction experiments demonstrated the feasibility of condensed gas extraction. Preliminary economics indicate attractive payback on full-scale plants: about 23 months for a mill scale extraction facility and 17 months for a bleaching clay plant.