Process for producing ethanol by using potatoes as raw material

A technology of potatoes and raw materials, applied in the field of ethanol preparation, can solve the problems of low utilization rate of equipment, high utilization rate of equipment, large energy consumption, etc., and achieve high utilization rate of equipment, high crushing efficiency, and water consumption. small amount of effect

Active Publication Date: 2008-10-22
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 defects of the existing methods of preparing ethanol from potato raw materials by crushing potato raw materials, which consume a large amount of water, consume large ene

Method used

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  • Process for producing ethanol by using potatoes as raw material
  • Process for producing ethanol by using potatoes as raw material
  • Process for producing ethanol by using potatoes as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0051] (1) Peeling and crushing of cassava raw materials

[0052] Prepared as follows figure 1 , 2 and the peeling device shown in 3.

[0053] The drum 2 includes a first segment drum 2a and a second segment drum 2b from top to bottom, the first segment drum 2a and the second segment drum 2b are connected, and the lengths of the first segment drum 2a and the second segment drum 2b are respectively 1.8 meters and 1.6 meters; the drum 2 is made of steel with an inner diameter of 1.6 meters; 40 hot-rolled ribbed steel bars with a length of 1.5 meters are fixed on the inner wall of the first section drum 2a (the brand is HRB335, and the nominal diameter is 12 mm ), each hot-rolled ribbed steel bar is parallel to the central axis of the drum, each hot-rolled ribbed steel bar is distributed at equal intervals along the circumference of the inner wall o...

Embodiment 2

[0065] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0066] Prepare ethanol according to the method for embodiment 1, difference is, adopt the method for manual peeling in step (1) to scrape off the inner epidermis of cassava raw material with a knife, collect and obtain the cassava raw material after 95 kilograms of peeled. The cassava raw material was pulverized according to the method of Example 1 to obtain 95 kg of pulverized product (the particle diameter of the cassava raw material in the pulverized product was about 2 mm). According to the high-efficiency liquid phase conditions described in step (1) of Example 1, it was measured and calculated that the 95 kg pulverized product contained 26.5 kg of starch. According to the conditions of Example 1, the remaining crushed product after the sampling test was enzymatically hydrolyzed, and the enzymolyzed product was fermented to obtain 13.91 kg of e...

Embodiment 3

[0074] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0075] Prepare ethanol according to the method for embodiment 1, and the difference is that the method for pulverizing comprises using SFSP series hammer mill to first pulverize 30 kilograms of fresh cassava raw materials after peeling for 12 minutes to obtain a particle diameter of 5- 30 kilograms of primary pulverized products of 6 mm, then 1.5 kilograms of the primary pulverized products of 5% by weight and remaining 25 kilograms of fresh cassava raw materials that were peeled and not pulverized were mixed and pulverized once again for 10 minutes to obtain a particle diameter of 55 kg of the primary crushed product of 3-4 mm, 2.75 kg of the primary crushed product of 5% by weight and the remaining 40 kg of cassava that has not been crushed through peeling were subjected to primary crushing for 15 minutes to obtain a total of 95 kg of primary crush...

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Abstract

The invention provides a method of using potato raw material to prepare ethanol. The method comprises the steps of crushing peeled potato raw material, and mixing the crushed product with enzyme for enzyme digestion to obtain a zymohydrolysis product, wherein, the crushing method comprises the steps of crushing the peeled potato raw material for one time to obtain a primary crushed product, crushing part of the primary crushed product for the second time to obtain a secondary crushed product, mixing the remaining part of the primary crushed product with the potato raw material peeled but not crashed and crushing once. With the method, water and energy consumption are less and the equipment utilization rate and the crushing efficiency are high; meanwhile, the secondary crushing method can better control the grain diameter of particles of the potato raw materials in the crushed product obtained by crushing, thereby the grain diameter of the particles of the potato raw materials which are finally obtained is small and even..

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): C12P7/06A23N7/02
CPCC12P7/06Y02E50/17Y02E50/10
Inventor 岳国君姜勇刘志民邓立康刘晓峰张永新郝小明
Owner COFCO GROUP
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