Method for preparing alcohol by utilizing potato materials

A potato and raw material technology, applied in the field of ethanol preparation, can solve the problems of long solid-liquid separation cycle, low equipment utilization rate, large energy consumption, etc., achieve less water consumption, high crushing efficiency, and increased yield Effect

Active Publication Date: 2012-09-05
COFCO GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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 that consume a large amount of water, consume large energy, and low utilization rate of equipment and overcome the existing cassava fermentation process. The waste liquid treatment method for preparing ethanol has the disadvantage of too long solid-liquid separation period, and provides a kind of pulverized potato raw material that consumes less water, consumes less energy, and has high utilization rate of equipment and is suitable for cassava. Method for preparing ethanol by using tuber raw material with short period of solid-liquid separation of waste liquid produced by fermentation for ethanol

Method used

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  • Method for preparing alcohol by utilizing potato materials
  • Method for preparing alcohol by utilizing potato materials
  • Method for preparing alcohol by utilizing potato materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0077] (1) Peeling and crushing of cassava raw materials

[0078] Prepared as follows figure 1 , 2 and the peeling device shown in 3.

[0079] 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

[0094] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0095] Prepare ethanol according to the method for embodiment 1, difference is, adopt the method for artificial peeling in step (1) to scrape off the inner epidermis of fresh 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 1...

Embodiment 3

[0107] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0108] 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 (water content 65% by weight) for 12 minutes , to obtain an average particle diameter of 30 kilograms of the primary crushed product of 5.5 mm, then 1.5 kg of the primary crushed product of 5% by weight is mixed with the remaining 25 kg of fresh cassava raw material that has not been crushed through peeling and is again crushed for 10 Minutes, the average particle diameter obtained is 55 kilograms of primary pulverized products of 4 millimeters, and 2.75 kilograms of this primary pulverized products of 5% by weight are carried out primary pulverized 15 minutes with remaining 40 kilograms of cassavas that have not been pulverized t...

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Abstract

The invention provides a method for preparing alcohol by utilizing potato materials. The productivity of the starch-alcohol of the alcohol obtained by the method is obviously higher than that of the starch-alcohol of the alcohol obtained by the reference methods, and compared with the prior art, the residual sugar rate in the method of the invention is greatly reduced. Meanwhile, the method provided by the invention obviously shortens the solid-liquid separation time and increases the treatment capacity of the liquid waste in unit time under the condition of dispensing with new equipment, thus overcoming the bottleneck that the device used for preparing the alcohol by fermenting cassava has relatively low operation load and increasing the production capacity of the device.

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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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/10A23N7/02A23K1/06C12R1/645A23K10/38
CPCY02E50/16Y02E50/10Y02P60/87
Inventor 郝小明刘玉华柳树海王利武国庆林海龙
Owner COFCO GROUP
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