Title:
PREPARATION PROCESS FOR CELLULOSE SOLUTION AND DEVICE FOR SAME
Document Type and Number:
WIPO Patent Application WO/2016/192512
Kind Code:
A1
Abstract:
The present invention provides a preparation process for a cellulose solution. The preparation process comprises: continuously mixing NMMO having a low concentration and non-activated pulp on line, and dehydrating the mixed pre-mixed solution in an evaporative dehydration device until the solution is up to the NMMO concentration suitable for swelling; then, sufficiently swelling under the condition; and carrying out reduced-pressure evaporation on the uniformly mixed and sufficiently swelled pre-mixed solution by means of a film evaporation device, dehydrating and dissolving to prepare the cellulose solution having a high concentration, a uniform dissolution and excellent consistency. The present invention also provides a cellulose solution continuous preparation device for the preparation process. The present invention solves the contradiction between mixing uniformity and swelling sufficiency in the preparation process of the high-concentration cellulose solution in the prior art, and avoids the problem of safety in storing and conveying the high-concentration NMMO in the traditional technology, and the pulp used in the present invention does not need to be activated, so that energy consumption is low. The technological process of the present invention is safer, more energy saving and more efficient, and is convenient for continuous industrial production.
Inventors:
ZHOU YUN'AN (CN)
SUN YUSHAN (CN)
WANG GENLI (CN)
CHENG CHUNZU (CN)
WU ZHENXING (CN)
CHI KEDONG (CN)
HOU SONGXIN (CN)
PANG YU (CN)
SUN YUSHAN (CN)
WANG GENLI (CN)
CHENG CHUNZU (CN)
WU ZHENXING (CN)
CHI KEDONG (CN)
HOU SONGXIN (CN)
PANG YU (CN)
Application Number:
PCT/CN2016/081488
Publication Date:
December 08, 2016
Filing Date:
May 10, 2016
Export Citation:
Assignee:
CHINA TEXTILE ACADEMY (CN)
International Classes:
C08J3/09; D01D1/02; D01F2/00
Domestic Patent References:
| WO2005116309A1 | 2005-12-08 |
Foreign References:
| CN1157012A | 1997-08-13 | |||
| CN105037753A | 2015-11-11 | |||
| CN101435114A | 2009-05-20 | |||
| DE4441468A1 | 1996-05-23 |
Attorney, Agent or Firm:
BEIJING YUANZHONG INTELLECTUAL PROPERTY AGENT LTD. (CN)
北京元中知识产权代理有限责任公司 (CN)
北京元中知识产权代理有限责任公司 (CN)
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