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Cellulose ethanol production device and method

A technology for cellulosic ethanol and a production method, which is applied in the directions of biochemical cleaning devices, biochemical equipment and methods, enzymology/microbiology devices, etc., can solve the problems of restricting cellulosic ethanol, high energy and material consumption, and poor fluidity.

Active Publication Date: 2014-10-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cellulose raw material that can be enzymatically decomposed into yeast metabolizable cellulose usually contains 20% to 90%. Cellulose is insoluble in water, but it is easily soluble in water. The content of metabolizable cellulose in the prepared enzymolysis reaction solution is relatively low low, and poor fluidity, high viscosity, resulting in difficult operation of the enzymolysis reaction liquid sterilization, enzymolysis and other processes, the amount of cellulase is large, the alcohol content of mature mash is usually less than 3%, high energy and material consumption, Difficult engineering and difficult sewage treatment restrict the development of cellulosic ethanol industry

Method used

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  • Cellulose ethanol production device and method
  • Cellulose ethanol production device and method
  • Cellulose ethanol production device and method

Examples

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Effect test

Embodiment 1

[0050] Made from corn stalks figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 The shown cellulosic ethanol production device and method are used to produce fuel ethanol.

[0051] Firstly, the raw material of corn stalks is decontaminated and crushed. The dry basis content of cellulose in corn stalks is 31%. 2 After the gas is mixed, the gas explosion operation of the cellulose raw material is realized, and the CO in the mixed gas 2 The mole percentage is 60%. The operating pressure gauge is 2.0MPa, and the operating temperature is 240°C.

[0052] The corn stalk raw material after gas explosion treatment is sent to the mixing tank, and the mixing water is added to make the enzymolysis reaction liquid. The device completes the high temperature sterilization operation. The mixing water in the mixing tank includes the recycled water, clear liquid and fresh water of the waste mash treatment unit, and the recycled water and clear liquid are preheated by the heat ex...

Embodiment 2

[0069] Use waste paper from municipal waste as raw materials figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 The shown cellulosic ethanol production device and method carry out the production of industrial alcohol.

[0070] The content of cellulose in the waste paper raw material is 72% on a dry basis. After removing impurities, pulverizing and moistening with water, it is sent to the gas explosion treatment device. The gas explosion treatment device uses water vapor and CO 2 After the gas is mixed, the gas explosion operation of the cellulose raw material is realized, and the CO in the mixed gas 2 Mole percent is 1%. The operating pressure gauge is 0.1MPa, and the operating temperature is 100°C.

[0071] The waste paper raw material after air explosion treatment is sent to the mixing tank, and the mixing water is added to make the enzymolysis reaction liquid. The device completes the high temperature sterilization operation. The mixing water in the mixing t...

Embodiment 3

[0088] Cassava residue produced by cassava starch production is used as raw material, using figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 The shown cellulosic ethanol production device and method are used to produce fuel ethanol.

[0089] The cassava residue produced by cassava starch production has a dry basis content of 35%. First, the cassava residue is sent to the gas explosion treatment device, which uses water vapor and CO 2 After the gas is mixed, the gas explosion operation of the cellulose raw material is realized, and the CO in the mixed gas 2 Mole percent is 10%. The operating pressure gauge is 1.2MPa, and the operating temperature is 200°C.

[0090] The corn stalk raw material after gas explosion treatment is sent to the mixing tank, and the mixing water is added to make the enzymolysis reaction liquid. The total solid of the enzymolysis reaction liquid is 12%. The device completes the high temperature sterilization operation. The mixing water ...

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Abstract

The invention relates to a device and method for producing cellulosic ethanol. The device comprises a production unit for raw material enzymolysis, fermentation, rectification, dehydration and waste mash liquid treatment; in gas explosion treatment in a raw material enzymolysis unit, water vapor is mixed with CO2 to realize gas explosion operation on cellulose raw material; the operation gauge pressure is 0.1-2.0MPa; the operation temperature is 100-249 DEG C; and the mole percent in the mixed gas is 1-60%. As the method and device for process wastewater treatment and returning preparation and the like are adopted, the difficulty problems that the process water is high in consumption amount and wastewater treatment is difficult and the like can be solved in the production process of the cellulosic ethanol and zero emission of aerobic sludge is realized in the production process of the cellulosic ethanol.

Description

technical field [0001] The invention relates to a cellulosic ethanol production device and method, which can effectively reduce the low content of metabolizable cellulose in the enzymatic hydrolysis reaction liquid in the production process of cellulosic ethanol, and the fluidity is poor, the amount of cellulase is large, and the mature Low alcohol content, high energy and material consumption in production, and difficult sewage treatment will improve the market competitiveness of vitamin ethanol as an alternative liquid fuel. The technology of the invention belongs to the technical field of biomass energy and resources. Background technique [0002] With the continuous growth of the world's population and the development of industrialization, the demand for energy is increasing day by day. The continuous use of non-renewable energy such as coal, oil and natural gas not only causes energy depletion, but also accelerates the continuous deterioration of the ecological environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/10C12M1/04C12M1/02
CPCC12M21/12Y02E50/16C12M47/12C12M45/20C12M27/00C12M45/02C12M41/18Y02E50/10
Inventor 张敏华董秀芹吕惠生刘成马静耿中峰李桂明
Owner TIANJIN UNIV