Heating device of anaerobic biogas digester and use method of heating device

Abstract

The invention discloses a heating device of an anaerobic biogas digester, which comprises a biogas generator set, a tail gas exhaust system, a heat exchange system, an aeration system, a heating system and a transition pool, the tail gas exhaust system comprises an exhaust pipe and a smoke purification assembly, the two ends of the exhaust pipe are respectively communicated with one end of the biogas generator set and one end of the smoke purification assembly; the other end of the smoke purification assembly is communicated with the heat exchange system, the other end of the heat exchange system is communicated with one end of the aeration system and one end of the heating system in parallel, the heating system and the aeration system are both installed in the transition pool, and the transition pool is communicated with an anaerobic biogas digester. The waste heat of the biogas generator set is collected, the waste heat is used for heating sewage, the biogas production efficiency of biogas produced through follow-up anaerobic fermentation is improved, utilization of waste heat resources by biogas power generation users is met, energy consumption of the anaerobic biogas digester is reduced, energy conservation and emission reduction are further achieved, and resources are saved and utilized; and maximization of resource utilization is realized.

Description

technical field [0001] The invention relates to the technical field of energy utilization of a biogas digester, in particular to a heating device for an anaerobic digester and a method for using the same. Background technique [0002] Using biogas to generate electricity has become an important cost-saving measure for large-scale livestock and poultry farms. The energy distribution in the process of biogas power generation in livestock and poultry farms is as follows: power generation accounts for about 33%, smoke exhaust accounts for about 32%, high temperature water accounts for about 19%, low temperature water accounts for about 6%, and other energy losses account for about 10%. Theoretically speaking, 90% of the waste heat of generating units can be effectively utilized, but the utilization rate of waste heat of most biogas generating units in my country is extremely low, and only a few of the waste heat of biogas power plants are used to meet the heat demand of their ow...

AI Technical Summary

Problems solved by technology

[0004] In the anaerobic fermentation process of manure from poultry farms, normal temperature fermentation is generally implemented. This method has poor anaerobic digestion effect on sewage, and the effect of biogas production is not ideal, especially for black film biogas digesters. For the anaerobic fermentation process, the implementation of external heating will further improve the effect of anaerobic fermentation, and at the same time, it will also have a certain promotion effect on the production of biogas

At present, external heating is generally used for black film biogas digesters, and a separate geothermal source needs to be provided to continuously heat the sewage, which increases the energy consumption of black film biogas digesters

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