A METHOD FOR PREPARING ETHANOL FROM ROOT AND TUBER CROPS

摘要

The present invention provides a method for preparing ethanol from root and tuber crops, including the steps of mixing the pulverized crops with enzyme and performing enzymolysis in an enzymolysis device. The enzymolysis device comprises: a flash column; a heat source communicated with the flash column via the third interface; an enzymolysis tank communicated with the flash column via the outlet; a material source communicated with the flash column via the first interface; a vacuum pump communicated with the flash column via the second interface. Before, during or after delivering the pulverized crops into the flash column from the material source, negative pressure in the flash column is established by the vacuum pump to suck the heat medium in the heat source into the flash column to raise the temperature, and then the heated product is delivered to the enzymolysis tank to perform enzymolysis.