Flow control method and apparatus for continuous wood chip...

Details Flow control method and apparatus for continuous wood chip... Flow control method and apparatus for continuous wood chip...

D - Textiles, Paper

21

C

92/56

D21C 9/00 (2006.01) D21C 7/06 (2006.01)

Patent

CA 1049310

ABSTRACT OF THE DISCLOSURE A method and apparatus for screenless treatment of cellulose fiber material without channeling of treatment liquid through a fiber material column being treated. An inner vertical vessel extends into an outer vertical vessel which has a larger diameter than the inner vessel, and an annular space in the outer vessel is defined by a portion of the inner vessel extending into the outer vessel. At least three baffles extend through the annular space into the area of the outer vessel below the inner vessel to de- fine at least three distinct flow areas, and an outlet nozzle is provided in each of the flow areas. Liquid is withdrawn from the annular space through at least two of the flow areas, while liquid is backflushed into one of the flow areas. - 2 -

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