Frusto-conical outlet for a cellulose material treatment vessel

Details Frusto-conical outlet for a cellulose material treatment vessel Frusto-conical outlet for a cellulose material treatment vessel

D - Textiles, Paper

21

C

D21C 7/08 (2006.01)

Patent

CA 2273379

In a cellulose pulp handling vessel having a first diameter material storing or treating portion above a second diameter discharge which is at least 20% less than the first diameter, reduced compression of the material and reduced power requirements of an agitator (if used), compared to prior art constructions are provided. A first transition, preferably a substantially smooth interior surface substantially frusto- conical transition, is provided between the first and second diameters. A second single-convergent transition may be provided above the first transition. A rotating agitator with at least two arms and associated paddles may be mounted for rotation in the transition about a substantially vertical axis for agitating the material in the transition. If desired, the transition may be moved, such as with a vibrator or oscillator. The invention is particularly suitable for pulp digesters and impregnation vessels.

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