Raw material storage and processing method applied to production of bioethanol

Abstract

The invention provides a raw material storage and processing method applied to production of bioethanol, and belongs to the field of biomass recycling technological development. According to the raw material storage and processing method applied to the production of the bioethanol, the storage cost is effectively controlled, and the conversion efficiency of bioethanol products is improved. The method comprises the steps of a, adopting a raw material with 20%-70% moisture content, and conducting smashing with different particle sizes according to initial moisture content; b, preparing additive, wherein lactic acid bacteria fungicide and hemicellulase are dissolved into sterile water which accounts for 2%-3% dry weight of the raw material, and based on the dry weight of the raw material, the dosages of the lactic acid bacteria fungicide and hemicellulase are 103-105 cfu / g and 0.15-0.45 IU / g respectively; c, mixing the raw material with the additive, compacting the mixture, venting gas and storing for at least 21 days to obtain the stored material; d, conducting drip washing on 5%-10% of the stored material through the sterile water, conducting extrusion, taking the liquid component to mix with an MRS nutrient solution, and after cultivating the mixed solution for 6-12 hours at 30 DEG C, refrigerating the mixed solution for standby application; e, when storage in next batch is conducted, replenishing hemicellulase 0.5-0.75 times which is used in a previous batch into the nutrient solution, so that the regenerated storage additive is obtained so as to replace the additive needed by continuous storage; f, fully mixing the remaining storage material with the solid after drip washing to make the mixture used for pretreatment of production of ethyl alcohol.

Description

technical field [0001] The invention belongs to the development and application field of biomass resource utilization technology, and relates to a raw material processing method applied to biorefinery, in particular to a raw material storage and processing method applied to bioethanol production. Background technique [0002] Lignocellulose is the most abundant carbohydrate resource in nature and widely exists in plant stems, leaves, fruit shells and other tissues. The main components are cellulose, hemicellulose and lignin. Cellulose and hemicellulose are composed of pentose and hexose sugars, including glucose, xylose, galactose, mannose, and arabinose. These monosaccharide components are the main raw materials for biorefinery of clean fuels and fine chemicals in recent years. [0003] In the emerging field of biomass product refining, the raw materials, namely perennial energy crops and agricultural wastes, have a relatively fixed harvest season each year. Therefore, the ...

AI Technical Summary

Problems solved by technology

When this traditional method is used in biorefinery, firstly, the loss of raw material dry matter is large, resulting in economic losses; secondly, the degree of lignification in the drying process of raw material increases, so higher requirements are put forward for the intensity of pretreatment in biorefinery

Images