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Method for preparing ethanol from tuber crops raw material

A technology of ethanol and cassava, applied in application, biofuel, peeling of vegetables or fruits, etc., can solve the problems of low utilization rate of equipment, low energy consumption, large energy consumption, etc., and achieve high crushing efficiency and water consumption. The effect of less amount and higher yield

Active Publication Date: 2013-03-06
COFCO GROUP
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  • 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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  • Method for preparing ethanol from tuber crops raw material
  • Method for preparing ethanol from tuber crops raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0066] (1) Peeling and crushing of cassava raw materials

[0067] Prepared as follows figure 1 , 2 and the peeling device shown in 3.

[0068] 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

[0086] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0087] 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 average particle diameter of the cassava raw material in the pulverized product was 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...

Embodiment 3

[0104] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0105]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 30 kilograms of peeled fresh cassava raw materials for 12 minutes to obtain an average particle diameter of 5.5 30 kilograms of primary pulverized products of mm, then 1.5 kilograms of the primary pulverized products of 5% by weight are mixed with the fresh cassava raw materials that have not been pulverized through peeling of the remaining 25 kg and pulverized once again for 10 minutes to obtain an average particle diameter of 55 kilograms of primary pulverized products of 3 mm, 2.75 kilograms of the primary pulverized products of 5% by weight and the remaining 40 kg of cassava that have not been pulverized through peeling were pulverized for 15 minutes to obtain 95 kilograms of p...

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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 rate of residual sugar; 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 that is removed by squeezing, and consequently the method reduces the device abrasion that is 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 rainfall 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 carbohydrat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/06A23N7/02
CPCY02E50/17Y02E50/10
Inventor 刘志民姜勇王东涛林海龙邓立康岳国君
Owner COFCO GROUP
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