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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 waste water not meeting environmental requirements, low utilization rate of equipment, and high pressure of waste water treatment, so as to achieve less water consumption, high utilization rate of equipment, The effect of less energy

Active Publication Date: 2012-04-25
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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0060] (1) Crushing of cassava raw materials

[0061] This 95 kilograms of fresh cassava raw materials (water content 65% by weight) are washed and cut into discs of about 1 cm, and then the cassava chips are pulverized using the SFSP series hammer mill, and the pulverized method comprises first 60 One kilogram of cassava was crushed once for 20 minutes to obtain 60 kilograms of the primary crushed product with an average particle diameter of 4.5 mm, and then 60 kilograms of the primary crushed product of 10% by weight was mixed with the remaining 35 kilograms of fresh cassava raw materials that had not been crushed once again Pulverize 15 minutes, obtain the primary pulverization product that average particle diameter is 3 millimeters, and above-mentioned all primary pulverization products carry out secondary pulverization 5 minutes, obtain 95 kilo...

Embodiment 2

[0079] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0080] The fresh 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 ethanol.

[0081] Take 100 grams of distilled ethanol and filter the remaining fermented mash with a Buchner funnel, transfer 20 milliliters of the filtrate to a dry 50 milliliter Erlenmeyer flask, let it stand for 5 hours, and collect the supernatant. The su...

Embodiment 3

[0099] This example is used to illustrate the method for preparing ethanol using cassava raw material of the present invention.

[0100] Prepare ethanol according to the method of Example 1, the difference is that the pulverizing method includes using SFSP series hammer mill to pulverize 30 kilograms of fresh cassava raw materials (water content 65% by weight) once for 12 minutes to obtain the average particle size Diameter is 30 kilograms of primary pulverization products of 5.5 millimeters, then 1.5 kilograms of this primary pulverization products of 5% by weight are mixed with the remaining 25 kilograms of fresh cassava raw materials that have not been pulverized and are pulverized again for 10 minutes to obtain an average particle diameter of 3 55 kilograms of the primary crushed product of 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 for 15 minutes to obtain 95 kg of the primary crushe...

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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 after 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 Patents(China)
IPC IPC(8): C12P7/06
CPCY02E50/17Y02E50/10
Inventor 岳国君张永新刘清勋高纯林林海龙于建东吕建国王倩
Owner COFCO GROUP
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