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Document Type and Number:
Japanese Patent JPS6262194
Kind Code:
B2
Abstract:
A process is provided for heating up wood chips in one or more stages at progressively higher temperatures prior to steaming and pulping in an economical manner at a considerable cost saving; heating the chips in at least a first preheating stage directly with moisture-saturated hot air, optionally admixed with inert gas, having a temperature within the range from about 55 DEG to about 99 DEG C., preferably from 70 DEG to 90 DEG C., having been brought to that temperature in a heat exchanger with hot water or air heaters with waste gases, such as gases drawn at different levels from an evaporator, for example, a Lockman pre-evaporator column.

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Inventors:
KANDORIN KAARUUYOHAN
ORUSON TORUBUIERUN
ORAUSON RAASU GUNNAA
Application Number:
JP50259881A
Publication Date:
December 25, 1987
Filing Date:
July 15, 1981
Export Citation:
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Assignee:
MODOOKEMECHITSUKUSU AB
International Classes:
D21B1/02; D21C1/00



 
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