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Novel method for producing ethanol with potato raw material

A new method and raw material technology, applied in the new field of potato raw material alcohol production, can solve the problems of unstable quality of alcohol products, equipment abrasion, unstable production, etc., to ensure long-term stable operation, reduce material consumption and energy consumption, and improve production efficiency. The effect of market competitiveness

Inactive Publication Date: 2008-08-20
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many differences between the potato alcohol production process and the corn alcohol production process: the composition of potato raw materials varies greatly due to the place of origin and harvest time, the content of impurities is high, the fermentation process is difficult to control, the fermentation products are complex, and the quality of alcohol products is unstable; It is difficult to effectively remove the sand in the alcohol production process, resulting in serious equipment abrasion during the alcohol production process, and the device cannot run stably for a long period of time, and equipment such as pumps must be replaced regularly; the traditional potato alcohol production process has high energy consumption and material consumption, and serious water pollution. Unstable production and other issues

Method used

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  • Novel method for producing ethanol with potato raw material
  • Novel method for producing ethanol with potato raw material
  • Novel method for producing ethanol with potato raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Using dried sweet potato as raw material, using figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Image 6 The potato raw material alcohol production method shown is for the production of fuel ethanol.

[0053] The sweet potato dry raw material with a starch content of 65% is transported to a sieving machine by a conveyor with a sieve hole of 3.5 mm. The dried sweet potato on the sieve is sent to a pulverizer through a belt, and is pulverized into powder by the pulverizer in two stages. Sent to the secondary mixer for pulping. The undersize of the sieving machine is sweet potato dry powder rich in sand, accounting for 15% of the total raw material. The undersize is collected and sent to the primary mixer, mixed with mixing water to make a slurry to the desander The sand is washed and desanded by mixing water in the sand tank, and the sand and other impurities removed from the sand remover are collected and sent to the boiler for incineration. The slurr...

Embodiment 2

[0060] Using fresh cassava as raw material, using figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Image 6 The potato raw material alcohol production method shown carries out the production of edible alcohol, and concurrently produces industrial alcohol.

[0061] Fresh cassava raw materials with a starch content of 25% are sent to the peeling machine through a conveyor to remove most of the impurities such as potato skins and silt, which are collected and retting to be sold as fertilizer. The peeled raw materials are sent to the washing machine for cleaning, and the fresh potato raw materials after washing are sent to the pulverizer for pulverization and pulping. No mixing water is added, and the sieve hole of the pulverizer is 3.5×12mm. The washing water mixture containing potato skins and sediment is separated from liquid and solid through a centrifuge. The separated solid impurities are collected and sent to the boiler for incineration, and the separated ...

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Abstract

The invention relates to a new method for producing alcohol by using potato raw material, which is mainly characterized in that: the pretreatment process of the raw materials of the dry potato chips adopts the two-level pulp-making production technique, thin pulp with a relatively low viscosity obtained by the level one material stirring and pulp making undergoes sand removing operation process, the thin pulp is subject to the secondary material stirring and pulp making to obtain a thicker powder pulp; a washing water mixture containing potato skins and sands which is drained from a fresh potato raw material water washing machine is separated by a liquid-solid separation device, the obtained clean liquid is returned to the water washing machine for continuous circulating usage; the washing water with the alcohol degree of 5 to 12 percent which is drained from a tower kettle of a CO2 washing tower is arranged to a rectification dehydration unit together with fermented mash after adding base solution, so as to ensure the acid value and the oxidation time of the produced alcohol to be qualified; a part of the clean liquid which is drained when the waste mash of the crude tower passes through the solid-liquid separation device is directly sent to a fresh potato pretreatment unit as the supplementary water of the washing water of the water washing machine for washing the cassava, thus reducing the production load of the evaporation and the concentration of the clean liquid, and the supplementary water of the cleaning water of the water washing machine does not consume other water.

Description

technical field [0001] The invention relates to a new method for producing ethanol from potato raw materials, which can ensure the effective removal of sundries such as sand in slurry during the production of potato raw material alcohol, realize thick mash fermentation, and reduce material consumption and energy consumption in the alcohol production process. Reduce the discharge of process wastewater in the production process, ensure the long-term stable operation of the device, and improve the market competitiveness of potato alcohol as biomass fuel. Background technique [0002] Fermented alcohol is a renewable and important basic raw material and product. Alcohol products are mainly divided into edible alcohol, industrial alcohol, and absolute ethanol (including fuel ethanol) products according to different functions and components. It is mainly widely used in the fields of brewing beverage wine, electronic component manufacturing, solvents, chemical production raw mater...

Claims

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Application Information

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IPC IPC(8): C12P7/06
CPCY02E50/17Y02E50/10
Inventor 张敏华吕惠生董秀芹李永辉欧阳胜利钱胜华张志强刘宗章
Owner TIANJIN UNIV
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