Multi-product co-production process such as ethanol and the like

Abstract

The invention discloses a multi-product co-production process of ethanol and the like, which is characterized in that the required raw materials include corn, sweet sorghum and straw; It uses corn andsweet sorghum as raw materials to produce fuel ethanol. The qualified liquor from ethanol production was processed into DDGS, and the unqualified distiller's grains were mixed with some cattle and sheep manure and residual straw for biogas power generation. The residues of sweet sorghum juice were fermented into silage for feeding cattle and sheep. Biogas residue, and part of cattle and sheep manure, residual straw into organic fertilizer, applied to farmland; after purification and distillation, the food grade CO2 was produced. Compared with the traditional technology, the invention shortensthe production time and improves the production efficiency. Taking ethanol production as an example, the sugar content of fermented mash and the proportion of mature mash were 3-5% higher than thoseof traditional corn fermentation. The fermentation time is effectively shortened and the alcohol yield is increased.

Description

technical field [0001] The invention relates to technical fields such as energy, light industry, medicine, feed, etc., and more specifically relates to a multi-product co-production process such as ethanol. Background technique [0002] In recent years, biofuel ethanol has undergone a rapid development process. The first generation of fuel ethanol uses corn and sugarcane as the main raw materials. Its production process includes pretreatment, degerm pulping, liquefaction, saccharification, fermentation and distillation steps. At present, the starch conversion rate of most ethanol enterprises in the United States has reached 90-95%. To produce 100 million gallons of fuel ethanol requires 900,000 tons of corn, which can simultaneously produce 300,000 tons of animal feed and 8,500 tons of corn oil. The cost of enzyme preparations for grain ethanol has also experienced a decline from high to low, and the proportion of enzyme preparations in the cost has dropped from 30% to 40%...

AI Technical Summary

Problems solved by technology

Although China's ethanol processing industry has developed rapidly in recent years, the aflatoxin present in corn is still the biggest obstacle to the use of China's self-produced DDGS as a feed material

It is inevitable that various toxins in DDGS feed will exceed the standard due to the production of fuel ethanol from corn that has been stored for a short period or extended period

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