Vertical steaming vessel

Details Vertical steaming vessel Vertical steaming vessel

D - Textiles, Paper

21

C

92/57.3

D21C 3/26 (2006.01) D21C 1/02 (2006.01)

Patent

CA 1322485

ABSTRACT Wood chips, or like comminuted cellulosic fibrous material, are treated in a vertical presteaming vessel in the production of paper pulp. The vessel does not employ a vibrating discharge structure as is conventional, but rather utilizes as a discharge structure a plurality of rotating arms having depending blades, mounted at the bottom of the vessel, which force the wood chips toward a discharge opening in the vessel bottom. The steam is introduced into the vessel through a vertical tube concentric with the vessel, and surrounding a rotatable shaft which is connected to the arms of the discharge device. A truncated cone is provided at the bottom of the steam tube, making a slip connection with the tube, and overlies the discharge opening. The cone has maximum horizontal dimensions greater than those of the outlet, to cause the chips to move radially outwardly into contact with the discharge element. The vessel may be used in place of a chips bin in a conventional chips handling scheme, or may be utilized in place of a conventional horizontal screw steaming vessel.

575730

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