Title:
CLOSED CYCLE ZERO DISCHARGE OXIDIZING PULPING PROCESS
Document Type and Number:
WIPO Patent Application WO/2005/064076
Kind Code:
A1
Abstract:
The present invention discloses a closed cycle zero discharge oxidizing pulping process. The process includes: (i)forming active oxygen free radicals via an electron reduction reaction with molecular oxygens in an ionic reaction unit ; (ii) transforming and separating the lignins with the active oxygen free radicals, and causing the colouring groups in the plant cell interlayers to change; (iii) obtaining the pulp. The present process basically changes traditional technology using acid , base , chlorine , anthraquinone etc. with serious pollutions. It not only excuses the cooking and bleaching, but also can use the annual plants, and also can save energy and water. It has wonderful environmental benefit, social benefits and economic efficiency.
Inventors:
MEI XIUQUAN (CN)
XIE LAISU (CN)
XIE LAISU (CN)
Application Number:
PCT/CN2003/001121
Publication Date:
July 14, 2005
Filing Date:
December 25, 2003
Export Citation:
Assignee:
MEI XIUQUAN (CN)
XIE LAISU (CN)
XIE LAISU (CN)
International Classes:
D21C3/00; D21C3/22; D21C9/00; D21C9/147; (IPC1-7): D21C3/00; D21C9/147
Foreign References:
| CN1297085A | 2001-05-30 | |||
| CN1142555A | 1997-02-12 | |||
| CN1107530A | 1995-08-30 | |||
| DE10126988A1 | 2002-12-12 | |||
| DE19612194A1 | 1997-10-02 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (Great Eagle Centre 23 Harbour Roa, Wanchai Hong Kong, CN)
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