Process and equipment for preprocessing cellulosic ethanol raw material

A cellulosic ethanol and pretreatment technology, which is applied in the field of cellulosic ethanol raw material pretreatment process and equipment, can solve the problems affecting the yield of cellulosic ethanol, cost pollution load and equipment investment, etc., so as to reduce pollution load, production cost and high yield. , good separation effect

Inactive Publication Date: 2009-08-26
上海天之冠可再生能源有限公司
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Problems solved by technology

The raw material pretreatment process and equipment of cellulosic ethanol production directly affect the yield, cost, pollution load and equipment investment of cellulosic ethanol production

Method used

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  • Process and equipment for preprocessing cellulosic ethanol raw material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Pretreatment process of cellulosic ethanol using wheat straw as raw material

[0021] 250 kg of wheat straw, cut into 3-5 cm long, remove the soil, wheat leaves, wheat husks, wheat awns, etc. According to the weight ratio of raw material to pretreatment waste liquid or circulating water of 1:0.8-1.5, wetting is carried out and then placed in a pyrolysis tank. Introduce saturated or supersaturated steam to raise the temperature inside the tank to 145-180 degrees. After steaming for 4 to 10 minutes, pass compressed air to 1.3 to 2.0mpa, open the spray valve of the pyrolysis tank to spray and explode, and the obtained material has a pH of 5.0 to 6.5 (water can be added to the concentration required by the process), and the conveying device reaches high-concentration heat. After grinding, enter the original liquid extraction device, extract the original liquid amount of 1.5 ~ 3M 3 / t. The material enters hydrolysis and saccharification, and the raw liquid is u...

Embodiment 2

[0022] Embodiment 2: The pretreatment process of cellulosic ethanol using rubber seed husk as raw material.

[0023] 250 kg of rubber seed shells, after crushing, remove dust, grease and other sundries. According to the weight ratio of raw material to pretreatment waste liquid or circulating water of 1:0.6-1.5, it is soaked and placed in a pyrolysis tank. Introduce saturated or supersaturated steam to raise the temperature inside the tank to 150-200 degrees. After steaming for 4-10 minutes, pass compressed air to 1.5-2.5mpa, and open the spray valve of the pyrolysis tank to blast. The obtained material has a pH of 5.0-6.5 (water can be added to the concentration required by the process), and after being conveyed to the high-concentration hot mill, it enters the raw liquid extraction device, and the extracted raw liquid is 1.5-3M 3 / t, the obtained material enters hydrolysis and saccharification, and the extracted raw liquid is used for resource utilization such as presoaking...

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Abstract

The invention provides a process and equipment for preprocessing a cellulosic ethanol raw material, which is a raw material preprocessing process for producing cellulosic ethanol by straw biomass raw materials, such as wheat straw hood, cornstalk, and the like, and shell biomass raw materials, such as rubber seed shell, palm shell, and the like. In the raw material preprocessing process, steam and compressed air are adopted; and chemical medicines and auxiliary agents are not used during steaming, the temperature is low and the time is short, so the process can effectively prevent fiber from degrading and charring, improve the yield and the separation effect by high consistency hot grinding, and reduce the pollution load. Meanwhile, the production cost and the equipment investment can be reduced, and no waste liquor drainage in the whole preprocessing process can be realized.

Description

(1) Technical field [0001] The invention relates to the cellulosic ethanol industry, in particular to a cellulosic ethanol raw material pretreatment process and equipment. (2) Background technology [0002] At present, ethanol production mainly uses starch and sugar as raw materials, and the production cost is high, and it is limited by the increase of population and the decrease of arable land. Raw materials of straw and seed shells mainly composed of cellulose are abundant and cheap renewable resources on the earth. Therefore, the production of cellulosic ethanol will become the development direction of fuel ethanol. The raw material pretreatment process and equipment of cellulosic ethanol production directly affect the yield, cost, pollution load and equipment investment of cellulosic ethanol production. (3) Contents of the invention [0003] The purpose of the present invention is to provide a kind of pretreatment process suitable for the production of cellulosic eth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06C12M1/00
CPCY02E50/17Y02E50/10
Inventor 杨根喜
Owner 上海天之冠可再生能源有限公司
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