Ethanol production

EXTRACTION PROCESS BY DRY MILLING

  1. RECEPTION.-The grain is processed as it arrives. During periods of crop harvesting field grain is processed without need to be dry.
  2. STORAGE: Count facilities with a storage capacity of 15,000 tons. Enough for 10 days of operation. To store the grain should be a maximum of 16% of moisture.
  3. GRINDING: 1,280 Tons Daily of sorghum will be Grind until fine flour.
  4. Liquefaction: Water is added to form a paste, and the alpha-amylase enzyme that breaks down starch into sugars.
  5. SACCHARIFICATION: Yeast is added to break down sugars.
  6. FERMENTATION. - For 48 hours is maintained in containers where the sugars were converted into ethanol.
  7. DISTILLATION. - The mixture is heated to 78 ºC to evaporate the ethanol, which duct passes through the water-cooled back to a liquid state, resulting in 96% ethanol.
  8. DEHYDRATION. - To remove residual water seeps molecular sieves that increase the purity of 99.5% of ethanol.
  9. DENATURATION. - To prevent its use for human consumption 5% denaturing is added.
  10. SPIN. - After removing ethanol, Distilled Grain (DGS) is separated from the molasses, obtaining the Distilled Dried Grains (DDG) which can be used as high protein feed supplement.
  11. STORAGE DDGS. - To store the DDGS has to be lowered to a maximum humidity of 12%.
  12. CO2 CAPTURE. - This gas can be liquefied for industrial marketing, for the manufacture of beverages, pressurized oil wells, or simply to receive carbon credits.

Planta de etanol Tamaulipas Norte

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