B - Operations – Transporting – 04 – C
Patent
B - Operations, Transporting
04
C
182/152
B04C 5/24 (2006.01) B01D 17/00 (2006.01) B04B 1/08 (2006.01)
Patent
CA 1174180
Abstract A process for recovering an industrial coolant fluid from a contaminated mixture and restoring the re- covered coolant fluid to a predetermined concentration level and an apparatus for carrying out the process are disclosed. The process includes the following steps: (a) removing relatively large and heavy particulate matter from the contaminated mixture, the mixture containing coolant fluid and contaminating oils and solid particulate matter; (b) depositing the partially cleaned mixture into a first container (30) designed and constructed so that a whirlpool motion is imparted to the fluid passing through it; (c) transferring the mixture from the first container (30) to a liquid/liquid/solid separator (50); (d) recover- ing the separated coolant fluid from the separator (50); (e) introducing the recovered fluid into an inlet (38) of the first container (30) in a direction enhancing a fluid vortex created by the whirlpool movement of the fluid within the container (30) while permitting free oil to rise to the surface of the fluid vortex; (f) repeating steps (c) through (e) until the recovered coolant fluid has been sufficiently separated from the contaminants in the mixture; (g) then transferring the recovered coolant fluid from the first container (30) to a second container (80); and (h) restoring the recovered coolant fluid held in the second container (80) to a predetermined component concentration level. A further aspect of the process includes refreshing the stored recovered coolant in the following manner: (i) recirculating the stored coolant fluid through the separator (50); (j) returning the re- freshed coolant fluid to either one or both of the con- tainers (30, 80) for continued storage; and (k) repeating steps (i) and (j) after a predetermined storage time interval has elapsed.
399754
Dudrey Denis J.
Herman John T.
Radeztsky Delmer L.
Wolde-Michael Girma
Donaldson Company Inc.
Ridout & Maybee Llp
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