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Biogas fermentation tank heat-tracing heating constant temperature device and application method thereof

A biogas fermentation and constant temperature device technology, applied in bioreactor/fermenter combination, specific-purpose bioreactor/fermenter, biochemical cleaning device, etc. The problems of poor performance and inactivation of methanogens can achieve the effect of optimizing the disturbance in the tank, reducing investment and maintenance costs, and reducing heating efficiency.

Pending Publication Date: 2020-06-26
BIOGAS SCI RES INST MIN OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing electric heating devices generally have heating elements directly installed in the fermentation tank, as shown in the patent "A Biogas Digester with Auxiliary Heating Device" (ZL201710318258. The components are directly fixed in the fermenter, and the maintenance management and replaceability are poor; second, the direct contact between the heating element and the fermentation liquid is likely to cause corrosion of the heating element, and as the application time increases, a large amount of dirt is deposited on the heating element, which seriously affects Fermentation efficiency; third, the electric heating element directly transfers heat to the fermentation liquid, which may easily cause the methane bacteria around the fermentation element to lose activity due to excessive fermentation temperature

Method used

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  • Biogas fermentation tank heat-tracing heating constant temperature device and application method thereof
  • Biogas fermentation tank heat-tracing heating constant temperature device and application method thereof
  • Biogas fermentation tank heat-tracing heating constant temperature device and application method thereof

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Embodiment 1

[0029] The purpose of the present invention is to improve the problems of large heat loss in the existing fermentation device, easy fouling of the heating tube that affects the heat exchange efficiency, etc., and when the heating tube is not in direct contact with the fermentation liquid, it can realize the temperature increase outside the tank and the inside of the tank. , middle and lower part of the optimal arrangement for uniform heating.

[0030] The anaerobic fermenter electric heat tracing temperature increasing constant temperature device is composed of a fermenter, an electric heating element 2, a feed pipe 1, a heating pipe 3, an insulation layer 5 and the like.

[0031] The principle of the present invention is: the heating pipe 3 is made of stainless steel material with good thermal conductivity, the inside is fixed on the bottom of the fermenter 4, the fermenter 4 is provided with an insulating layer 5 to reduce the heat loss of the fermenter 4, and the insulating ...

Embodiment 2

[0037] The tank body is composed of an inner tank body with a diameter of 5m and a height of 5m. The internal medium of the tank body is water, and the wall thickness of the tank body is negligible. The outer thickness of the tank body is 1m. The arrangement method is that the heating pipes are arranged horizontally at a height of 1m from the bottom of the tank, the distance between the three pipes is 1.25m, and the heating volume heat release rate of the pipes is 4500W / m 3 .

Embodiment 3

[0039] An anaerobic fermentation tank heat tracing temperature increasing constant temperature device, comprising a fermentation tank 4, a feed pipe 1, a biogas pipe 6 and an overflow discharge pipe 8 are arranged on the fermentation tank 4, an insulation layer 5 is arranged on the outer wall of the fermentation tank 4, and the fermentation tank 4 is provided with an insulation layer 5. A plurality of stainless steel heating tubes 3 are added at the inner bottom of the tank 4, and armored heating elements are embedded in the heating tubes 3. The stainless steel heating tubes 3 are circular tubes, and the outer wall and the inner wall of the fermentation tank 4 form an anaerobic fermentation zone; the heating tubes 3 The inner wall is in contact with the heating element.

[0040] The heating element is fixedly arranged on the heat transfer support 12. The middle of the heat transfer support 12 is a ring surrounded by evenly arranged ribs. The heating element is fixed in the ring...

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Abstract

The invention discloses a biogas fermentation tank heat-tracing heating constant temperature device and an application method thereof. The biogas fermentation tank heat-tracing heating constant temperature device includes a fermentation tank, wherein the fermentation tank is provided with a material feeding pipe, a biogas pipe and an overflow material outlet pipe, and the biogas fermentation tankheat-tracing heating constant temperature device is characterized in that a heat insulation layer is arranged on the outer wall of the fermentation tank, a plurality of heating tubes are arranged at the inner bottom of the fermentation tank, and sheathed heating elements are embedded in the heating tubes; and an anaerobic fermentation area is formed between the outer walls of the heating tubes andthe inner wall of the fermentation tank, and the inner walls of the heating tubes are in contact with the heating elements. Through the biogas fermentation tank heat-tracing heating constant temperature device, the uniformity degree of the temperature in the fermentation tank can be improved effectively, disturbance in the tank can be increased, and fermentation materials can be mixed more uniformly, so that the fermentation efficiency is improved.

Description

technical field [0001] The invention relates to an electric heat-tracing temperature-increasing constant temperature device for maintaining fermentation stability and a use method thereof, belonging to the technical field of rural biogas centralized gas supply engineering. Background technique [0002] Rural biogas has the dual effects of renewable energy production and environmental improvement. The form of rural settlements in China will gradually develop from scattered small-scale scattered villages to densely populated villages. The production and lifestyle of farmers will gradually shift from agricultural social life to Urbanization social life development. Therefore, the development of centralized biogas supply meets the needs of the development of rural settlements in China, and is more conducive to improving the living environment in rural areas and the efficient development and utilization of renewable energy. Small-scale biogas projects (about 30 m³-300m³) can ada...

Claims

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Application Information

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IPC IPC(8): C12M1/38C12M1/107C12M1/02C12M1/00
CPCC12M21/04C12M23/02C12M41/18Y02E50/30
Inventor 罗涛梅自力邹航任嘉友谢钰琳刘永岗杨光辉
Owner BIOGAS SCI RES INST MIN OF AGRI
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