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 utilization rate of equipment, low energy consumption, large energy consumption, etc., and achieve high utilization rate of equipment, low water consumption and high yield Effect

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

[0008] The purpose of the present invention is to overcome the defects of the existing method of crushing potato raw materials in the method for preparing ethanol from potato raw materials, which consume a large amount of water, consume large energy, and have low utilization rate of equipment, and overcome the existing defects of producing ethanol from The method of recovering solid residues from the waste liquid produced by fermenting potato raw materials to produce ethanol has the disadvantage of high energy consumption. To provide a method for crushing potato raw materials that consumes less water, consumes less energy, and has high equipment utilization and Method for preparing ethanol from potato raw material with low energy consumption for recovering solid residue from waste liquid prepared by fermenting potato raw material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0052] (1) Crushing of cassava raw materials

[0053] 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 primary pulverization 20 minutes, obtains the primary pulverization product that average particle diameter is 4.5 millimeters (the Accu Sizer TM 780 optical particle diameter detector that adopts U.S. PPS company to measure) 60 kilograms, then 60 kilograms of this primary pulverization product of 10% by weight is mixed with the remaining 35 kilograms of fresh cassava raw materials that have not been pulverized and carried out primary pulveriza...

Embodiment 2

[0078] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0079] Prepare ethanol according to the method of Example 1, the difference is that the pulverizing method includes using the SFSP series hammer mill to first pulverize 30 kilograms of fresh cassava raw materials for 12 minutes to obtain a primary pulverization with an average particle diameter of 5 mm. 30 kilograms of product, then 1.5 kilograms of this primary crushing product of 5% by weight is mixed with the remaining 25 kilograms of fresh cassava raw materials that have not been crushed and once again crushed for 10 minutes to obtain 55 kilograms of primary crushing products with an average particle diameter of 4 mm 2.75 kg of the primary crushed product of 5% by weight and the remaining 40 kg of cassava that have not been crushed were crushed once for 15 minutes to obtain 95 kg of the primary crushed product, and the above-mentioned primary cru...

Embodiment 3

[0089] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0090] Prepare ethanol 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 a pulverized product with an average particle diameter of 5.5 mm 50 kilograms, then 4 kilograms of this primary pulverization product of 8 weight % is 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 product is mixed with the pulverized product after the first pulverization Obtaining 95 kilograms of primary crushed products with an average particle diameter of 4 mm, and performing secondary crushing on the above primary crushed products for 3 minutes to obtain 95 kg of crushed product cassava slurry (cassava raw material averag...

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Abstract

The invention provides an ethanol preparation method that utilizes raw potato materials, the starch ethanol yield of the ethanol obtained by the method is apparently higher than that of the ethanol obtained by the existing methods; and compared with the prior art, the ethanol preparation method has greatly reduced residual sugar rate; the method not only can greatly lower the energy consumption for recycling solid residue, but also can remarkably lower the impurity content and the COD value of water removed by squeezing, and consequently the method reduces the device abrasion caused by impurities and lowers maintenance cost and environmental stress.

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 岳国君郝小明杜金宝于天杨武国庆高士良
Owner COFCO GROUP
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