Heating system of marsh gas tank and the marsh gas tank

Abstract

The invention discloses a marsh gas tank and a heating system of same. The heating system includes a control system, a heat exchange system, and an auto-excitation system. The auto-excitation system includes a combustion chamber being communicated with the marsh gas tank through a gas pipe. The heat exchange system includes a discharge pipeline, a reflux pipeline communicated with the discharge pipeline, and a heat exchange device. The combustion chamber is communicated with the heat exchange device through the pipeline. The control system is respectively connected electrically to the heat exchange system and the auto-excitation system and can control the heat exchange system. By means of the structure, a circulating fluid in the heat exchange system is heated timely by means of marsh gas in the marsh gas tank, wherein the heat is carried into the marsh gas tank for increasing temperature of the biogas slurry in the marsh gas tank; in addition, with the marsh gas, which is produced in the marsh gas tank, as a heat source, the marsh gas tank can be heated continuously, so that a problem of reduced productivity of marsh gas due to excessive low temperature in winter or in night in a marsh gas tank in the prior art can be solved. The heating system has simple structure and is more convenient to use.

Description

technical field [0001] The invention relates to the technical field of biogas, in particular to a biogas pit heating system and a biogas pit. Background technique [0002] At present, the problem of environmental pollution has become a major problem that human society must face. The environmental problem in my country is particularly prominent. For example, the smog in the north caused by straw burning and use of unclean energy has become more and more serious in recent years. Therefore, it is advocated The use of clean energy is an inevitable requirement for environmental protection. [0003] In terms of energy, biogas is a clean biomass energy that can be produced by fermentation of biogas slurry at a suitable temperature. However, the gas production rate of the biogas digester is greatly affected by the temperature. When the temperature in the digester is too low, it will seriously affect the activity and fermentation of methane bacteria in the digester. In order to ensu...

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Problems solved by technology

Compared with the biogas heating system without this structure, when the temperature in the biogas is too low, the circulating medium of the heat exchange system can be heated immediately after the biogas in the biogas is burned in the combustion chamber. And bring heat into the biogas tank to increase the temperature of the biogas slurry in the biogas tank, and because it uses the biogas produced by the biogas tank itself as the heat source, it can continuously heat the biogas tank and maintain its temperature, which is a better solution to the problem There is the problem of low gas production rate due to low temperature in winter or at night in biogas digesters. At the same time, it also has the advantages of simple structure and more convenience.

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