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Preparation method of biogas

A biogas and biogas liquid technology, applied in the field of biogas preparation and biogas preparation, can solve the problems of insufficient gas production and low economic feasibility, and achieve the effects of accelerating the degradation rate, increasing the degradation amount, and improving the gas production efficiency.

Pending Publication Date: 2020-01-21
甘肃天之山生态农业科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, simply using straw to prepare biogas has the problem of insufficient gas production, and the economic feasibility is low.

Method used

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  • Preparation method of biogas
  • Preparation method of biogas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing biogas, comprising the steps of

[0020] (1) Straw silage: the straw raw material is crushed into straw powder with a particle size of less than 3cm by a pulverizer, and the straw powder is added to the silage tank, and white rot fungi are added to the silage tank, and the silage is carried out for 4 days;

[0021] (2) Slurry mixing: put the silage finished straw into the slurry tank, add pig manure with a weight of 10% of the straw, activated sludge with a weight of 30% of the straw and water with a weight of 200% of the straw , mixed and stirred to obtain a mixed solution of straw and pig manure;

[0022] (3) Anaerobic fermentation: Add the mixed liquid that has been prepared into the fermentation tank and ferment for 1 day to produce biogas, biogas residue and biogas slurry. in the reservoir;

[0023] (4) Biogas slurry recovery: the biogas residue in the liquid storage tank is used as organic fertilizer, and the biogas slurry is added to the ...

Embodiment 2

[0025] A method for preparing biogas, comprising the steps of

[0026] (1) Straw silage: the straw raw material is crushed into straw powder with a particle size of less than 3cm by a crusher, and the straw powder is added to the silage tank, and white rot fungi are added to the silage tank, and the silage is carried out for 5 days;

[0027] (2) Slurry mixing: put the silage finished straw into the slurry tank, add pig manure with a weight of 15% of the straw, activated sludge with a weight of 40% of the straw and water with a weight of 300% of the straw , mixed and stirred to obtain a mixed solution of straw and pig manure;

[0028] (3) Anaerobic fermentation: Add the mixed liquor that has been prepared into the fermentation tank and ferment for 2 days to produce biogas, biogas residue and biogas slurry. in the reservoir;

[0029] (4) Biogas slurry recovery: the biogas residue in the liquid storage tank is used as organic fertilizer, and the biogas slurry is added to the fe...

Embodiment 3

[0031] A method for preparing biogas, comprising the steps of

[0032] (1) Straw silage: the straw raw material is crushed into straw powder with a particle size of less than 3cm by a crusher, and the straw powder is added to the silage tank, and white-rot fungi are added to the silage tank, and the silage is carried out for 6 days;

[0033] (2) Slurry mixing: put the silage finished straw into the slurry tank, add pig manure with a weight of 20% of the straw, activated sludge with a weight of 50% of the straw and water with a weight of 400% of the straw , mixed and stirred to obtain a mixed solution of straw and pig manure;

[0034] (3) Anaerobic fermentation: Add the mixed liquid that has been prepared into the fermentation tank and ferment for 3 days to produce biogas, biogas residue and biogas slurry. in the reservoir;

[0035] (4) Biogas slurry recovery: the biogas residue in the liquid storage tank is used as organic fertilizer, and the biogas slurry is added to the fe...

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Abstract

The invention discloses a preparation method of biogas, and relates to the technical field of biogas preparation. The preparation method of the biogas is used for solving the problems of low biogas yield and low economic feasibility of biogas preparation by using pure straw. The reparation method of the biogas sequentially comprises the following steps: ensiling straw; carrying out pulp blending and mixing; carrying out anaerobic fermentation; and then, recycling biogas slurry. According to the preparation method of the biogas, the biogas is prepared by adding the straw, pig manure, pleurotusostreatus and activated sludge, so that the preparation method is suitable for preparing biogas by using the straw; and moreover, the preparation method has the advantages of being high in biogas yield, as well as quick in biogas production.

Description

technical field [0001] The invention relates to the technical field of biogas preparation, in particular to a biogas preparation method for preparing biogas. Background technique [0002] my country is a large agricultural country, and the crop straw produced every year is more than 700 million tons. With the development of rural economy and the continuous improvement of farmers' living standards, the consumption of crop straw as cooking fuel in rural areas is gradually decreasing. At present, the main processing methods of crop straw are There are two kinds of incineration and composting. The former produces a lot of dust and harmful gases, causing air pollution, while the latter requires a lot of manpower and material resources, which is not economical and not cost-effective. [0003] At present, my country is actively promoting the construction of large-scale biogas projects in order to establish my country's biomass natural gas industry. As a raw material with a wide rang...

Claims

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Application Information

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IPC IPC(8): C12P5/02C02F11/04C05F15/00C05F17/40C12R1/645
CPCC12P5/023C02F11/04C05F3/00C12P2203/00Y02E50/30Y02W30/40
Inventor 杨旭忠黄渊淼韩红利王燕英巴战生安青
Owner 甘肃天之山生态农业科技发展有限公司