Development and design of a high pressure carbon dioxide system for the separation of hazardous contamints from non-hazrdous debris

摘要

Under the Department of Energy (DOE)/United states Air Force (USAF) Memorandum of Understanidng, a system is being designed that will use high pressure carbon dioxide for the separation of oils, greases, and solvents from non-hazardous solid waste. The contaminants are dissolved into the high pressure carbon dioxide and precipitated out upon depressurization. The carbon dioxide solvent can the be recycled for continued use. Excellent extraction capability for common manufacturing oils, greases, and solvents has been measured. It has been observed that extraction performance follows the dilution model if a constant flow system is used. The solvents tested are extremely soluble and have been data are being used to desing a 200 liter extraction system.