Combined process for thermally and chemically treating lignocell

Details Combined process for thermally and chemically treating lignocell Combined process for thermally and chemically treating lignocell

1988-05-12

1990-04-10

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549490, 162 14, 162 15, 162 16, C07D30750

Patent

active

049162420

ABSTRACT:
In a combined process for the thermal and chemical treatment of lignocellulose-containing biomass and for the production of furfural, biomass is supplied to a cooker in batches, is heated in the cooker under the addition of cooking liquor, and cellulose or pre-treated biomass is withdrawn from the cooker in batches. In order to guarantee a high yield of furfural, cooking liquor is withdrawn from the cooker during the heating phase and is fed to a furfural production plant, and the cooking liquor at least largely freed from pentoses and furfural is returned to the cooker.

REFERENCES:
patent: 2859108 (1958-11-01), Rosenblad
patent: 3085038 (1963-04-01), Rovesti
patent: 3532597 (1970-10-01), Ljungqvist
patent: 3738908 (1973-06-01), Villavicencio
patent: 4070232 (1978-01-01), Funk
patent: 4155804 (1979-05-01), Edge, Jr.
patent: 4366322 (1982-12-01), Raymond
patent: 4401514 (1988-08-01), Kenzler et al.

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