The production process.1. Synthesis.The synthesis of ethanol can be synthesized from ethylene (C2H4) with 2 methods.- direct hydration of ethylene. With the reaction of ethylene with steam concentration rate, a pressure 5-8 Mega plasmid cal, temperature 250-300 C by using the catalyst. The phosphoric acid - silica gel and tungsten oxide silica gel. The alcohol concentration 10-25% ดังสมการ.C2H4 + H2O = CH3CH2OH.2CH3CH2OH = (CH3CH2) 2O + H2O.- in direct hydration of ethylene by first using ethylene purity 35-95% react with sulfur acid was that the ethanol as no more than 35% equation.C2H4 + H2SO4 = CH3CH2OSO3H.2 (C2H4) + H2SO4 = (CH3CH2O 2SO2.)Step 2 reaction of ethyl sulfate in 2 hydrolysis, and ethanol.CH3CH2OSO3H + H2O = CH3CH2OH + H2SO4.(CH3CH2O) 2SO2 + H2O = 2 (CH3CH2O) + H2SO4.Synthesis of this method can increase the concentration of ethanol 50-60% with increasing the concentration of sulfuric acid. The method for producing ethanol synthesis at present, this is not popular due to the high costs. And not worth the investment.2. The fermentation of microorganisms.As the traditional method and used in ethanol production at present, due to low cost, process simple, complex. The raw material is easy. These raw materials used include cassava, sugarcane, corn, and molasses.Production of ethanol or ethyl alcohol. The fermentation process by yeast alcohol fermentation raw material production of starch sugar and cellulose to sugar single molecules. Replace sugar, Al and single molecule is alcohol concentration 10-15% under anaerobic conditions. And cut the distillation process to obtain pure alcohol.C6H12O6 + + + = 2C2H5OH yeast 2CO2 2ATP.
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