Solids recovery using cross-flow microfilter and automatic...

Details Solids recovery using cross-flow microfilter and automatic... Solids recovery using cross-flow microfilter and automatic...

2006-12-05

2009-12-08

Cooley, Charles E (Department: 1797)

Imperforate bowl: centrifugal separators

With means for furnishing auxiliary fluid to material or...

Gas other than air

C494S027000, C494S036000, C494S037000, C494S050000, C494S056000, C494S065000, C210S376000

Reexamination Certificate

active

07628749

ABSTRACT:
In a system for combined centrifugation and microfiltration, retentate from a cross-flow microfilter is fed to an automatic piston discharge centrifuge for solids removal, thereby enhancing the efficiency of both processes. The centrifuge includes a cylindrical bowl having a conical lower end with an opening through which feed liquid is injected. Solids separate from the feed liquid and accumulate along the inner surface of the bowl as the bowl rotates at high speed. A microfiltration membrane can be added to improve solids retention in the bowl and provide a filtered centrate. During solids discharge, a piston is urged downward along a vertical axis. The downward movement of the piston forces accumulated solids from the bowl via the opening in the conical lower end thereof.

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