Apparatus for cleaning articles utilizing supercritical and near

Details Apparatus for cleaning articles utilizing supercritical and near Apparatus for cleaning articles utilizing supercritical and near

1994-12-01

1996-07-09

Coe, Philip R.

Cleaning and liquid contact with solids

Apparatus

With means for collecting escaping material

134105, B08B 310

Patent

active

055335381

ABSTRACT:
Disclosed is an apparatus and method of removing contaminants from an article utilizing a supercritical or near supercritical fluid. The article to be cleaned is first contacted with a fluid in which the contaminant is soluble at a first supercritical or near temperature. The contaminate solubilized fluid is then cooled or heated to a second supercritical or near supercritical temperature to lower the solubility of the contaminant in the supercritical fluid and thereby precipitate the contaminant. The contaminant is then recovered.

REFERENCES:
patent: 1771698 (1930-07-01), Wolff
patent: 3111952 (1963-11-01), Roehl
patent: 4322252 (1982-03-01), Plumb

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