Method for preparing ethanol from tuber crops raw material

A potato and raw material technology, applied in the field of ethanol preparation, can solve the problems of low crushing efficiency, large energy consumption, and low utilization rate of equipment, and achieve high crushing efficiency, low energy consumption, and high utilization rate of equipment

Active Publication Date: 2009-07-22
COFCO GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the existing methods of using potato raw materials to prepare ethanol that the method of crushing potato raw materials consumes a large amount of water, consumes a large amount of energy, and has low e

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0037] (1) Crushing of cassava raw materials

[0038] 95 kilograms of fresh cassava raw materials (4-8 centimeters thick, 20-30 centimeters long, water content 65% by weight) are cleaned and cut into discs about 1 centimeter thick, and then use the SFSP series hammer mill to treat the cassava chips Pulverize, the method of described pulverization comprises first this cassava chip of 60 kilograms is carried out once pulverization 20 minutes, obtains cassava raw material average particle diameter and is 4.5 millimeters (the AccuSizerTM 780 optical particle diameter detector that adopts U.S. PPS company measures) primary pulverization 60 kilograms of product, then 60 kilograms of this primary pulverization product of 10 weight % is mixed with the remaining 35 kilograms of fresh cassava raw materials that have not been pulverized and then pulverized aga...

Embodiment 2

[0053] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0054] Prepare ethanol according to the method for Example 1, the difference is that the pulverizing method comprises using the SFSP series hammer mill to first pulverize 30 kilograms of fresh cassava raw materials for 12 minutes to obtain cassava raw materials with an average particle diameter of 5.5 mm. 30 kilograms of primary pulverized products, then 1.5 kilograms of this primary pulverized product of 5% by weight is mixed with the remaining 25 kilograms of fresh cassava raw materials that have not been pulverized and once again pulverized for 10 minutes to obtain a cassava raw material with an average particle diameter of 4.5 mm. 55 kg of pulverized products, 2.75 kg of 5% by weight of the primary pulverized products and the remaining 40 kg of cassava that have not been pulverized were pulverized for 15 minutes to obtain 95 kg of primary pulveri...

Embodiment 3

[0058] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0059] Ethanol is prepared according to the method of Example 1. The difference is that the pulverizing method includes using the SFSP series hammer mill to first pulverize 50 kilograms of fresh cassava for 15 minutes to obtain cassava raw material with an average particle diameter of 6 mm. 50 kilograms of pulverized products, then 4 kilograms of the primary pulverized products of 8% by weight are mixed with the remaining 45 kilograms of fresh cassava raw materials that are not pulverized and pulverized once again for 15 minutes, and the pulverized products are combined with the pulverized products after the first pulverization Mixing obtains 95 kilograms of primary pulverized products whose average particle diameter of cassava raw material is 4 millimeters altogether, and above-mentioned primary pulverized product is subjected to secondary pulveriza...

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PUM

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Abstract

The invention discloses an ethanol preparation method that utilizes raw potato materials and comprises following steps: the raw potato materials are crashed, the crashed product is mixed with an enzyme, zymolysis is carried out so as to obtain a zymolysis product, and the zymolysis product is fermented, wherein, the crashing method comprises carrying out primary crashing of the raw potato materials to obtain a primary crashed product, carrying out secondary crashing of part of the primary crashed product to obtain a secondary crashed product, mixing left part of the primary crashed product with un-crashed raw potato materials and then carrying out primary crashing of the mixture. The ethanol preparation method not only can consume less water and less energy, and achieve high device utilization rate and high crashing efficiency, but also can achieve better control on the grain diameter of raw potato material particles in the crashed products that are obtained by crashing as well as small and even grain diameter of the final raw potato material particles by adopting the secondary crashing method.

Description

technical field [0001] The invention relates to a method for preparing ethanol, more particularly to a method for preparing ethanol by using tuber raw materials. Background technique [0002] Potatoes, such as sweet potatoes, potatoes, cassava, etc., are rich in starch, so they are widely used in the fields of fermentation sugar and starch production. [0003] Cassava is a tropical and subtropical perennial and temperate annual tuber shrub. It is native to South America and is suitable for growth in low latitude areas with an average temperature of 25-29°C and an average annual precipitation of 1000-1500 mm. About 1820 years ago, cassava spread to southern China and was mainly grown in Guangdong, Guangxi and Hainan, and now gradually expanded to Yunnan, Fujian, Guizhou and other provinces. There are two types of cassava: bitter cassava (poisonous cassava) and sweet cassava (non-toxic cassava). The main chemical composition of fresh cassava root is water, followed by carboh...

Claims

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Application Information

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IPC IPC(8): C12P7/06
CPCY02E50/17Y02E50/10
Inventor 张永新刘志民高纯林罗虎王旭杜金宝
Owner COFCO GROUP
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