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US 4,366,322 AGranted
Method for the production of furfural from vegetable matter
AssigneeBertin & Cie
InventorBernard P. M. Raymond
Life of this patent
Estimating the term…
Abstract
Process and apparatus for producing furfural from plant materials. The hydrolysis of pentosanes contained in plant materials is effected in a first reactor (2) in the presence of a strong concentrated acid, at 20.degree.-70.degree. C., at atmospheric pressure, and dehydration of the pentoses into furfural is effected in a second reactor (5) by vapor action at atmospheric pressure and at a temperature lower or equal to 110.degree. C., in a strong acid concentrated medium. Application: production of furfural.
Claims19
A process for the production of furfural from vegetable material containing pentosans, comprising:
- (a) in a first reactor, hydrolyzing pentosans present in said vegetable matter in the presence of a concentrated strong acid at or near atmospheric pressure at a temperature of about 20.degree. to 70.degree. C., thereby obtaining a solution of pentosis;
- and (b) in a second reactor, dehydrating said solution of pentoses by the action of steam applied at a pressure of about 1 to 2 bars absolute and at a temperature up to 110.degree. C. in a concentrated acid medium, thereby yielding furfural.
Dependencies are inferred from the claim text.