Process for the production of cellulose

Details Process for the production of cellulose Process for the production of cellulose

D - Textiles, Paper

21

C

D21C 7/00 (2006.01) C08B 1/00 (2006.01) D21C 1/00 (2006.01) D21C 3/22 (2006.01) D21C 5/00 (2006.01)

Patent

CA 2193448

A process for producing cellulose from vegetable raw materials containing same by reacting these with digesting agents is described, comprising a preliminary size reduction of said raw materials to give a pump able material, and a heat treatment of said material, arranged in a thin layer and maintained in a state of high turbulence, with at least one digesting agent; the abovementioned treatment is preferably carried out in a turboreactor and produces a mixture of cellulose fibres and of spent digesting agent, from which cellulose fibres ready for the uses in the paper industry are obtained via subsequent washing and separation phases; the process described is particularly suitable for the production of cellulose from annual plants in high yields, in very short times and at costs substantially reduced as compared with known processes.

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