Means for degassing paper pulp stock

Details Means for degassing paper pulp stock Means for degassing paper pulp stock

B - Operations, Transporting

01

D

183/13

B01D 19/00 (2006.01) D21D 5/26 (2006.01)

Patent

CA 1175365

ABSTRACT OF THE DISCLOSURE A means for degassing paper pulp stock, comprising an elongated horizontal cylindrical tank, having a first and second end, a distribution pipe parallel to the tank and a plurality of consecutive jet tubes for feeding pulp stock extend from said distribution pipe into the tank closer to the first end of the tank, an exit tube located close to the second end of the tank and towards which the pump stock flows on the bottom of the tank, means for maintaining the pulp stock level constant in the tank, an additional exit tube for returning to circulation the excess pulp stock that has en- tered the tank and means for producing sub-atmospheric pressure in the tank. The distribution pipe and the flow therewithin are directed opposite to the flow within the tank. The cross section areas of the flow diminishes towards that end of the tank where the jet tubes are located, the diminishing flow cross section area extending at least over the region of one jet tube.

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