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Raw material storage and processing method applied to production of bioethanol

A processing method and technology of bioethanol, applied in microorganism-based methods, biochemical equipment and methods, biofuels, etc., can solve problems such as large loss of raw material dry matter, economic loss, and increased lignification degree, and reduce storage additives. The effect of reducing the use and storage costs of

Inactive Publication Date: 2017-03-15
天津市拉贝尔实验室设备有限公司 +1
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  • Description
  • Claims
  • Application Information

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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

Method used

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  • Raw material storage and processing method applied to production of bioethanol
  • Raw material storage and processing method applied to production of bioethanol
  • Raw material storage and processing method applied to production of bioethanol

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Embodiment Construction

[0025] The switchgrass is the raw material for storage, and the ingredients of the used switchgrass are shown in Table 1.

[0026] Table 1 Main components of switchgrass

[0027]

[0028] The moisture content of switchgrass at harvest is 45%, and it is not crushed before storage. First, it is naturally dried to 25%-30% in a ventilated place indoors. Set 5 storage water content 30%-70%, 10% as a gradient. When the moisture content is set at 30%-50%, the crushing particle size is 2.5-5.0 cm, and when the moisture content is set at 50%-70%, the crushing particle size is 3.0-10.0 cm.

[0029] To prepare storage additives, use an appropriate amount of 30 ℃ sterile water to dilute the microbial inoculum and hemicellulase, so that the moisture content after mixing with the raw materials is about 30%, 40%, 50%, 60% and 70%. The lactic acid bacteria are Lactobacillus plantarum, Pediococcus lactis and Lactobacillus delbrueckii in a ratio of 5:1:1. Based on the dry weight of raw ma...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P39/00C12P7/10C12R1/25C12R1/01C12R1/225
CPCC12P7/10C12P39/00C12P2201/00Y02E50/10
Inventor 吴文韬汤瑶黄磊李龙李钟波
Owner 天津市拉贝尔实验室设备有限公司
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