发明名称 |
A METHOD FOR THE DELIGNIFICATION OF WOOD AND OTHER LIGNO-CELLULOSIC PRODUCTS |
摘要 |
A method for delignifying ligno-cellulosic materials and efficiently separate from each other the constituents thereof. Said materials are heated in an aqueous acid medium in the presence of phenol compounds. Then the reaction medium is drained and washed for isolating the purified solid cellulose pulp, the liquid phase separating into two layers: an aqueous layer rich with pentoses and an organic layer rich with phenols and lignin, the latter providing, by distillation and pyrolysis of the residue, a quantity of phenols at least equal to that of the phenols used in the delignification stage. |
申请公布号 |
DE3161585(D1) |
申请公布日期 |
1984.01.12 |
申请号 |
DE19813161585 |
申请日期 |
1981.06.16 |
申请人 |
BATTELLE MEMORIAL INSTITUTE |
发明人 |
SACHETTO, JEAN-PIERRE;ARMANET, JEAN-MICHEL;TOURNIER, HERVE;MICHEL, JEAN-PIERRE;JOHANSSON ALLAN AKE;ROMAN, ALAIN |
分类号 |
C08B1/00;D21C3/00;D21C3/04;D21C3/18;D21C11/00;(IPC1-7):D21C3/00 |
主分类号 |
C08B1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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