Liquid purification or separation – Processes – Separating
Patent
1997-12-24
1999-08-24
Upton, Christopher
Liquid purification or separation
Processes
Separating
210787, 210790, 210800, 210805, 210806, 210171, B01D 1702
Patent
active
059421282
ABSTRACT:
A method for processing metalworking fluid disposed in a sump 12 is disclosed and includes the step of collecting metalworking fluid having a greater concentration of tramp oil than the concentration in the sump and flowing a portion of this oil, without passing the oil through a separator, to increase circulation in the sump. Various steps of the method are developed which increase the level of tramp oil removed from the sump and provide for the introduction of oxygen into the working medium of fluid. In one particular embodiment of the method, the step of flowing the return fluid under pressure to the sump, includes forming jets of fluid which extend vertically into the air to aerate the metalworking fluid and block the proliferation of anaerobic bacteria.
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Fleischhauer Gene D.
United Technologies Corporation
Upton Christopher
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