According to the raw materials used in production, it can be divided into starchy raw material fermentation alcohol, molasses raw material fermentation alcohol, and sulfite pulp waste liquor fermentation to produce alcohol. Starch raw material fermented alcohol (generally contains starchy raw materials such as potatoes, cereals and wild plants, hydrolyze starch into glucose under the action of microorganisms, and then further fermented by yeast to produce alcohol); molasses raw material fermented alcohol (directly using molasses Sugar, after dilution and sterilization and adding some nutrients, fermented by yeast to produce alcohol);
Sulphite pulp waste liquor is fermented to produce alcohol (using six-carbon sugar contained in papermaking waste liquor, fermented into ethanol under the action of yeast, the main product is industrial alcohol. It is also produced by the hydrolysis of wood chips with dilute acid).