| abstract |
The invention discloses a process for synchronous production of ethanol, xylitol, lignin and cellulose fiber pulp by enzymolysis and fermentation of straw, which comprises the following steps: (1) raw material pretreatment; (2) enzymolysis; (3) separation; (4) Distillation, fermentation, nanofiltration; (5) Reverse osmosis purification. The process for simultaneous production of ethanol, xylitol, lignin, and cellulose fiber pulp by enzymolysis and fermentation of straw provided by the present invention organically combines bio-enzyme conversion technology and membrane separation technology, and the plant straw cellulosic enzyme used can destroy the complex structure of straw, Improve the efficiency of enzymatic hydrolysis, the membrane separation process is simple, low energy consumption, can realize simultaneous production of multiple products, maximize the use of crop straw resources, and produce good economic benefits. |