Patent ID: 8888959
Filing Date: 2014-11-18
Classification: D21C

Abstract:
1. A method for feeding wood chips to a continuous digester, comprising, feeding wood chips into a vessel having a rotatable stirrer at a bottom of the vessel, the vessel having a bucket-shaped outlet, suspending the wood chips in the vessel to create a chips suspension; establishing a liquid level (LIQLEV) of at least 20 meters above a pump level of at least two pumps, arranging the at least two pumps in parallel connected directly to the bottom of the vessel, the two pumps having no pump serially connected thereto upstream or downstream thereof, the stirrer having two scraper arms sweeping over pump inlets arranged in the bucket-shaped outlet, each pump transferring the chips suspension in a transfer line extending from the vessel to the top of a digester, cooking the wood chips in the digester to form a pulp, and continuously feeding out pulp from a bottom of the digester.