Nonaqueous solvent regenerating apparatus for use in cleaning

Cleaning and liquid contact with solids – Apparatus – Sequential work treating receptacles or stations with means...

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134109, B08B 310

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active

057996768

ABSTRACT:
The nonaqueous solvent employed in drying as a final step of cleaning is regenerated. The nonaqueous solvent is contacted with a separation fluid having low compatibility with the nonaqueous solvent and high compatibility with a hydrophilic solvent to cause the hydrophilic solvent contained in the nonaqueous solvent to be absorbed in the separation fluid, thereby regenerating the nonaqueous solvent. When the hydrophilic solvent is an alcohol, a low-molecular-weight silicone compound and demineralized water may be used as the nonaqueous solvent and the separation fluid, respectively, in which the silicone compound can be regenerated to a purity of 99.0 to 99.8% so that the silicone compound can be recycled for use in the drying.

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