Cleaning and liquid contact with solids – Apparatus – Automatic controls
Patent
1998-03-30
2000-06-20
Coe, Philip R.
Cleaning and liquid contact with solids
Apparatus
Automatic controls
134 952, 134107, 134109, B08B 304
Patent
active
060765372
ABSTRACT:
A pulse vacuum extraction solvent cleaning system in which solvent remnants are removed from a cleaning vessel by evacuating the closed cleaning vessel to a predetermined vacuum pressure. At the predetermined vacuum pressure, if the concentration of solvent exceeds a predetermined value, air is introduced into the cleaning vessel to reduce the vacuum pressure and provide a carrier to remove the solvent. The process repeats until the solvent concentration falls below a predetermined threshold.
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Brink Christopher J.
McChesney Eddie J.
Coe Philip R.
Detrex Corporation
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