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Methane-generating pit

A technology of biogas digester and pool body, which is applied in the field of biogas digesters, can solve the problems such as the inability to produce gas normally in the digester, and achieve the effects of increasing the gas production speed and efficiency, reducing the diffusion speed and improving the thermal insulation effect.

Inactive Publication Date: 2013-01-09
BEIJING QIDI HUIMIN TECH INVESTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a biogas digester with a thermal insulation structure to solve the problem that the biogas digester cannot produce gas normally at low temperature

Method used

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Experimental program
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Embodiment 1

[0026] like figure 1 As shown, 1 in the figure is the pool body of the biogas digester. In the embodiment of the present application, the biogas digester body 1 includes: inner layer 2, outer layer 3, insulation layer 4 and anti-seepage layer 5, wherein: anti-seepage layer 5 , the inner layer 2, the insulation layer 4 and the outer layer 3 are distributed sequentially from the inside to the outside.

[0027] The inner layer 2 and the outer layer 3 are enclosed to form a space with an opening at the top, such as figure 1 As shown, the opening is 6, and a gas output device may be provided on the opening 6 for outputting the biogas generated in the biogas digester body 1 to the user. The inner layer 2 and the outer layer 3 are sealed, that is, there is a gap between the inner layer 2 and the outer layer 3 . In the embodiment of this application, according to different construction techniques, the inner layer 2 and the outer layer 3 can choose any one of the concrete layer and t...

Embodiment 2

[0034] like figure 2 As shown, on the basis of Embodiment 1, the digester body can also include: a warming coil 7 and a circulation pump 8, wherein:

[0035] Warming coil 7 can be arranged between the insulation layer 4 and the inner layer 2 at the bottom of the biogas tank body (such as figure 2 As shown), it can also be arranged between the thermal insulation layer 4 and the inner layer 2 of the side wall of the biogas digester body, and of course, it can also be arranged at these two positions at the same time. The circulation pump 8 is connected with one end of the heating coil 7, and is used for pumping higher temperature water into the heating coil 7 to heat the biogas slurry in the biogas tank body 1.

[0036] figure 2 Described in is the heating coil 7 arranged between the insulation layer 4 and the inner layer 2 at the bottom of the biogas digester body. When it is at the bottom of the digester body 1, the heating coil 7 can be distributed in a spiral manner . ...

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Abstract

The invention discloses a methane-generating pit. A pit body of the methane-generating pit comprises an impermeable layer, an inner layer, an outer layer and a heat preserving layer, wherein a space of which the top is provided with an opening is formed in each of the inner layer and the outer layer; the inner layer and the outer layer are sealed relatively; the impermeable layer is fixed on the entire inner wall of the inner layer; and the heat preserving layer is positioned at the bottom of the pit body of the methane-generating pit and / or between the inner layer and the outer layer on a side wall. Compared with the prior art, the methane-generating pit provided by the embodiment of the invention has the advantages that the heat preserving layer is arranged in the inner wall of the methane-generating pit, so that the temperature diffusing speed of the methane-generating pit can be lowered, the heat preserving effect is improved, fermentation is facilitated, and the methane generating speed and efficiency are increased.

Description

technical field [0001] The application relates to the technical field of biogas, in particular to a biogas digester. Background technique [0002] As a new clean energy, biogas can be widely used in rural areas of our country. It uses the waste straw of crops to produce biogas as an energy source for cooking, heating water, lighting, etc., which can save a lot of coal, fuel and Firewood, etc., and can improve the environment, high thermal efficiency, so it is valued by the relevant departments. [0003] Due to the great influence of temperature during fermentation, the gas production of existing biogas digesters changes with the seasons. Biogas is produced normally. And when the temperature is lower than a certain temperature (generally below 15°C), especially in the biogas digesters in the permafrost layer in winter, the fermentation speed is relatively slow, usually 3 days after the feed can produce gas, the gas production speed and efficiency Low, can not produce gas n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/107
CPCC12M23/20C12M41/12C12M21/04Y02E50/30
Inventor 周奇迪
Owner BEIJING QIDI HUIMIN TECH INVESTMENT