Title:
【発明の名称】バッチ式蒸煮処理によるセルロースの製造方法
Document Type and Number:
Japanese Patent JPH0830311
Kind Code:
B2
Abstract:
A method for the production of cellulose by the batch cooking process, wherein the digester is filled with chips and cooking liquor, and the batch is cooked at elevated temperature and pressure in order to obtain a delignified cellulose pulp in the digester. For the impregnation stage a cooking liquor is used which contains a substantially higher amount of active chemicals than is required for the cooking of the batch, and before the actual delignification stage the active-chemical batch for the cooking is adjusted and the excess amount of active chemicals is removed by replacing it by part of the hot spent cooking liquor recovered from a previous cooking.
Inventors:
OSUTOMAN PERU HEKAN
Application Number:
JP50441884A
Publication Date:
March 27, 1996
Filing Date:
November 28, 1984
Export Citation:
Assignee:
FUOESUTO ARUPINE IND ANRAAGENBAU GMBH
International Classes:
D21C1/00; D21C3/00; D21C3/22; D21C11/00; (IPC1-7): D21C3/22; D21C11/00
Domestic Patent References:
| JPS542282A | 1979-01-09 | |||
| JPS542281A | 1979-01-09 | |||
| JPS57171784A | 1982-10-22 | |||
| JPS4724161A | ||||
| JP45035361A | ||||
| JP44014401A |
Attorney, Agent or Firm:
Hidehiko Matsuno
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