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Method for preparing ethanol by adopting yam materials

A potato and raw material technology, which is applied in the field of ethanol preparation, can solve the problems of wastewater not meeting environmental requirements, low utilization rate of equipment, high pressure of wastewater treatment, etc., to achieve less water consumption, high crushing efficiency, and less energy Effect

Active Publication Date: 2009-11-25
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 low utilization rate of equipment, and overcome the defects of existing cassava fermentation The waste liquid treatment method for preparing ethanol has the disadvantages of high waste water treatment pressure and the treated waste water cannot meet the requirements of the environment. It provides a kind of pulverized potato raw material that consumes less water and consumes less energy. The utilization of equipment The method of producing ethanol using potato raw materials with high efficiency and the treatment of waste liquid produced by cassava fermentation to ethanol can significantly reduce the pressure of wastewater and the treated wastewater can meet environmental requirements

Method used

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  • Method for preparing ethanol by adopting yam materials
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  • Method for preparing ethanol by adopting yam materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0074] (1) Peeling and crushing of cassava raw materials

[0075] Prepared as follows figure 1 , 2 and the peeling device shown in 3.

[0076] 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

[0096] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0097] 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

[0116] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0117] 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 ethanol by adopting yam materials. The starch ethanol yield of the ethanol obtained by adopting the method for preparing the ethanol by the yam materials is obviously higher than that of the ethanol obtained by a reference method, and compared with the prior art, the residual sugar ratio of the method for preparing the ethanol is greatly reduced; and simultaneously, the method provided by the invention can obviously reduce the pressure of wastewater treatment, and wastewater subjected to wastewater treatment can meet the requirements of the environment.

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 Applications(China)
IPC IPC(8): C12P7/06A23N7/02
CPCY02E50/17Y02E50/10
Inventor 刘志民张永新刘清勋邓立康于建东吕建国王倩张继军
Owner COFCO GROUP
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