Title:
PRODUCTION PROCESS OF NON-ADHESIVE FORMALDEHYDE-FREE FIBER BOARD FOR STRAW CO-PRODUCTION OF FULVIC ACID
Document Type and Number:
WIPO Patent Application WO/2022/052775
Kind Code:
A1
Abstract:
A production process of a non-adhesive formaldehyde-free fiber board for straw co-production of fulvic acid. Using non-wood fiber as a raw material, by means of cooking defibering, purifying, activating, and saccharificating all factors, then separating, obtaining lignin that has undergone initial activation, fiber that has been purified and activated, and hemicellulose and non-wood fiber monosaccharides, and fulvic acid; conducting deep activation processing of the activated lignin. Using a sufficiently activated lignin and a low-molecular monosaccharide as a curing agent and a binder to produce the non-adhesive formaldehyde-free fiber board. By means of full activation of lignin, achieving holistic use of straw fiber resources, and also satisfying the special requirements of the non-adhesive formaldehyde-free fiber board for a high-quality fiber raw material and the highly-activated lignin; extracting evaporated black liquor and concentrate to obtain fulvic acid, stopping the pollution problem of pulping; obtaining distilled water from extracted and cooked evaporated black liquor concentrate and conducting recycling on same; fulvic acid obtained from co-production has high added value, increasing the performance, quality, and market competitiveness of the straw non-adhesive formaldehyde-free fiber board.
Inventors:
BAI BO (CN)
BAI JIANI (CN)
WANG DONG (CN)
LIU YUFANG (CN)
SHI XIAOFEI (CN)
BAI JIANI (CN)
WANG DONG (CN)
LIU YUFANG (CN)
SHI XIAOFEI (CN)
Application Number:
PCT/CN2021/113534
Publication Date:
March 17, 2022
Filing Date:
August 19, 2021
Export Citation:
Assignee:
DAHE SHANGHAI ENVIRONMENTAL PROTECTION TECH CO LTD (CN)
International Classes:
B27N3/12; D21H11/12
Foreign References:
| CN112025906A | 2020-12-04 | |||
| CN109183480A | 2019-01-11 | |||
| CN110846345A | 2020-02-28 | |||
| CN108611912A | 2018-10-02 | |||
| CN110549456A | 2019-12-10 | |||
| CN101450955A | 2009-06-10 | |||
| CN110670396A | 2020-01-10 | |||
| JPH09268431A | 1997-10-14 |
Attorney, Agent or Firm:
JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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