Method of introducing or reintroducing a gas into a slurry...

Details Method of introducing or reintroducing a gas into a slurry... Method of introducing or reintroducing a gas into a slurry...

2006-08-10

2009-08-18

Griffin, Walter D (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including internal mixing or stirring means

C208S400000, C208S153000, C208S154000, C208S164000

Reexamination Certificate

active

07575730

ABSTRACT:
A method is provided for introducing or reintroducing a gas into a slurry vessel holding a slurry comprising a liquid and solid particles and having a gas distributor for injecting a gas into the slurry, where the gas distributor includes a sparger device comprising an apertured sparger portion inside the slurry vessel, an inlet portion leading into the slurry vessel and an outlet portion leading from the slurry vessel, and a valve, external of the slurry vessel, operable to allow or deny flow from the sparger portion out through the outlet portion of the sparger device. The method comprises operating the valve to allow flow through the outlet portion of the sparger device, flushing the sparger device through the outlet portion to remove settled material which may be present in the sparger device, operating the valve to deny flow through the outlet portion of the sparger device, and introducing or reintroducing the gas into the slurry vessel through the sparger device.

REFERENCES:
patent: 5086115 (1992-02-01), Clarke
patent: 6822006 (2004-11-01), O'Rear et al.
patent: 2004/0044090 (2004-03-01), Font Freide et al.
patent: 2011271 (1979-07-01), None

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