Method for preparing ethyl alcohol with sorgo stalk
A technology for sweet sorghum straw and ethanol, which is applied in the field of preparing ethanol by biological fermentation, can solve the problems of ineffective utilization, insufficient utilization, and reducing the amount of ethanol of sweet sorghum straw, and achieves the improvement of utilization rate, simple equipment and short working hours. Effect
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Embodiment 1
[0011] The sweet sorghum stalks are taken, the ears and roots of the sweet sorghum stalks are cut off, washed to remove impurities, and then sent to a beater for beating to obtain the sweet sorghum straw puree, which is used as a liquid material for preparing ethanol.
[0012] Adjust the sugar content of the liquid material to 18%, the pH value to 4.4-5.2, and the temperature to be 32-36°C. Add alcoholic yeast to the liquid material. The weight of the alcoholic yeast is 1.0‰ of the weight of the sweet sorghum straw pulp, and the inoculated liquid material is obtained. ;
[0013] Control the temperature of the inoculated liquid material at 32-36°C, and ferment for 58-80 hours to obtain fermented mash;
[0014] After the fermented mash is separated from the mash dregs, the fermented mash clear liquid is obtained;
[0015] The fermented mash supernatant is transferred to a distillation tower for distillation to obtain ethanol with an ethanol volume concentration above 95%.
Embodiment 2
[0017] Taking the sweet sorghum stalks, cutting off the ears and roots of the sweet sorghum stalks, washing and removing impurities, sending them into a beater for beating to obtain the sweet sorghum stalk puree;
[0018] Control the temperature of sweet sorghum straw puree at 36°C and pH value at 4.4, add cellulase and glucoamylase at a ratio of 10 units / gram of sweet sorghum straw puree for saccharification treatment, and saccharify for 6 hours to obtain a liquid material .
[0019] Adjust the sugar content of the liquid material to 18%, keep the pH value at 4.4 and the temperature at 36°C, add alcoholic yeast to the liquid material, the weight of the alcoholic yeast is 1.0‰ of the weight of the sweet sorghum stalk protoplasm, and inoculate the liquid material;
[0020] Control the temperature of the inoculated liquid material at 36°C and ferment for 58 hours to obtain fermented mash;
[0021] After the fermented mash is separated from the mash dregs, the fermented mash cle...
Embodiment 3
[0024] Taking the sweet sorghum stalks, cutting off the ears and roots of the sweet sorghum stalks, washing and removing impurities, sending them into a beater for beating to obtain the sweet sorghum stalk puree;
[0025] Control the temperature of sweet sorghum straw puree at 32°C and the pH value at 5.2, add cellulase and glucoamylase at a ratio of 15 units / g of sweet sorghum straw puree for saccharification treatment, and saccharify for 3 hours to obtain a liquid material .
[0026] Adjust the sugar content of the liquid material to 18%, maintain a pH value of 5.2, and a temperature of 32°C. Add alcoholic yeast to the liquid material. The weight of the alcoholic yeast is 1.0‰ of the weight of the sweet sorghum stalk protoplasm, and the liquid material must be inoculated;
[0027] Control the temperature of the inoculated liquid material at 34°C and ferment for 80 hours to obtain fermented mash;
[0028] After the fermented mash is separated from the mash dregs, the ferment...
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