Method for preparing fuel ethanol from rice straw

Method for preparing fuel ethanol from rice straw

  • CN 103,451,239 A
  • Filed: 08/29/2013
  • Published: 12/18/2013
  • Est. Priority Date: 08/29/2013
  • Status: Active Application
First Claim
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1. a method of utilizing rice straw to prepare alcohol fuel, it carries out according to the following steps:

  • (1) rice straw is pulverized by 20-40 mesh sieve screenings, then the powder sieved is carried out to radiation treatment;

    (2) material after radiation treatment is mixed by the solid-to-liquid ratio of 1;

    10-50 with 0.3-0.7% sodium hydroxide solution, and stir, carry out suction filtration react 0.5-1h under 80-100 ℃

    of conditions after, again the solid product after suction filtration is washed to neutrality, and be placed in vacuum drying oven, place 24h under 50-70 ℃

    of conditions;

    (3) dried solid product is mixed by the solid-to-liquid ratio of 1;

    10-50 with acetic acid-sodium acetate buffer solution, and add 200-250u/g cellulase, then put into the constant-temperature table of 30-50 ℃

    , through 120-140r/min concussion reaction, 72-96h, thereby obtain the fermented liquid that contains ethanol.

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