Method for preparing biomass straw biogas and adopted devices thereof

A technology for biomass straw and biogas, which is applied in biochemical equipment and methods, biochemical cleaning devices, enzymology/microbiology devices, etc. problems, to achieve the effect of high energy input and output efficiency, high temperature input energy, and convenient transportation.

Inactive Publication Date: 2010-07-28
刘兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] From a technical point of view, the existing pyrolysis gasification technology still has the following problems: (1) The calorific value of combustible gas produced by pyrolysis gasification is only 20% to 30% of the calorific value of biogas, and the main component of combustible gas is carbon monoxide, which enters the human body The body is very harmful and the safety is poor
(2) Pyrolysis and gasification is a thermochemical reaction process, which needs to be carried out at least at a temperature above 400°C. High temperature requires a lot of energy input, low energy efficiency ratio, and it is not easy to control and manage. It is difficult to apply in rural areas

Method used

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  • Method for preparing biomass straw biogas and adopted devices thereof
  • Method for preparing biomass straw biogas and adopted devices thereof
  • Method for preparing biomass straw biogas and adopted devices thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see figure 1 , the method for preparing biomass straw biogas can be implemented in sequence as follows:

[0038] (1) Pretreating the biomass straw material;

[0039] (2) Fermenting the material produced in step (1);

[0040] (3) Dehydration treatment of primary gas;

[0041] (4) Send the gas generated in step (3) into the gas holder.

[0042] In the present invention, desulfurization treatment may be continued after the step (3) is completed.

[0043] In the present invention, in the above step (1), the biomass straw material is pulverized so that the particle diameter reaches 2.5 cm and the pH value reaches 7.

[0044] In the present invention, the temperature of material fermentation in step (2) is 35°C.

[0045] In the present invention, the temperature of material fermentation in step (2) may also be 55°C.

[0046] In the present invention, nitrogen source urea is added to the material in step (2).

Embodiment 2

[0048] see figure 1 , the method for preparing biomass straw biogas can be implemented in sequence as follows:

[0049] (1) Pretreating the biomass straw material;

[0050] (2) Fermenting the material produced in step (1);

[0051] (3) Dehydration treatment of primary gas;

[0052] (4) Send the gas generated in step (3) into the gas holder.

[0053] In the present invention, the desulfurization treatment is carried out continuously after the step (3) is completed.

[0054] In the present invention, in the step (1), the biomass straw material is pulverized so that the particle diameter reaches 2 centimeters and the pH value reaches 6.8.

[0055] In the present invention, the temperature of material fermentation in step (2) is 30°C.

[0056] In the present invention, the temperature of material fermentation in step (2) is 50°C.

[0057] In the present invention, nitrogen source ammonium bicarbonate is added to the material in step (2).

[0058] see figure 2 , the device...

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Abstract

The invention discloses a method for preparing biomass straw biogas and adopted devices thereof. The method comprises the following steps: (1) carrying out pretreatment on materials; (2) carrying out fermentation on the materials produced by the step 1; (3) carrying out dehydration treatment on primary gas; and (4) sending the gas produced by the step (3) to a gas holder. The preparation devices comprise an agitating tank (1), a feeding mechanism (4), a straw anaerobic tank (2) and the gas holder (3), wherein the inlet of the feeding mechanism (4) is connected with the cavity of the agitating tank (1); the outlet of the feeding mechanism (4) is connected with the cavity of the straw anaerobic tank (2); a gas-liquid separator (5) is arranged between the straw anaerobic tank (2) and the gas holder (3); the gas outlet of the straw anaerobic tank (2) is communicated with the gas inlet of the gas-liquid separator (5); and the gas outlet of the gas-liquid separator (5) is communicated with the gas inlet of the gas holder (3). The method has the advantages of wide raw material source, high calorific value, good safety and convenient production management and control.

Description

technical field [0001] The invention belongs to the field of biomass straw applications, and in particular relates to a method for preparing biomass straw biogas and a device used therefor. Background technique [0002] China is an energy-deficient country, importing more than 80% of its oil during the peak period, a large amount of energy needs to be imported from abroad, and the instability of oil sources and prices have strategically restricted and threatened China's development and security , being controlled by others is the status quo of China's energy. On the other hand, due to the limited reserves of oil, research and development can replace raw materials, which can greatly improve China's current energy strategy status, and can regain self-sufficiency in oil with the help of alternative energy sources, and China has a large amount of waste plant fibers that can be used for alternative energy sources production, and has achieved mature technology. [0003] Recently...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C12M1/107C12M1/02
CPCY02E50/343C12M45/04C12M21/04C12M25/18Y02E50/30
Inventor 李晓东李苏谊刘兰
Owner 刘兰
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