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METHOD FOR RECOVERING CONCENTRATED HYDROLYSATE AFTER HYDROLYSIS OF CELLULOSE MATERIAL
METHOD FOR RECOVERING CONCENTRATED HYDROLYSATE AFTER HYDROLYSIS OF CELLULOSE MATERIAL
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机译:纤维素材料水解后回收浓缩水解物的方法
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摘要
A method for obtaining a strong hydrolysate from cellulosic material after a hydrolysis in a batch digester is disclosed. According to the invention the cellulosic material is exposed to a 2 stage hydrolysis with a first steam phase hydrolysis followed by a liquid phase hydrolysis, and wherein the steam phase is conducted such that the degree of packing of the cellulosic material results in at least a 20% up to 100% packing increase. The liquid phase hydrolysis includes adding hot and preferably acidified hydrolysis liquid and not establishing a total L/W ratio above 3.5, but sufficient to keep the cellulosic material under the level of the hydrolysis liquid.
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