Solar constant temperature fermentation methane tank

Abstract

The invention relates to a solar constant temperature fermentation biogas tank which pertains to the field of biochemistry, can eliminate the effect of natural environment on fermentation temperature and overcomes the disadvantages that the current biogas fermentation tank is unstable in output and even cannot produce gas in cold areas. The made improvement is that the wall or the wall and the bottom of the fermentation tank are two-layered and an interlayer for circulating water is formed between the two layers. A solar water heater is added. The interlayer connecting the solar water heater and the fermentation tank forms a water circulation circuit. A water pipe is provided with a pump. A biogas burner is arranged at the back of the absorber plate of the solar water heater. The pump and the biogas burner are controlled by a temperature sensor and a temperature signal processing circuit which are positioned in the fermentation tank and the water heater. The fermentation biogas tank of the invention has the advantages of utilizing the solar water heater and circulating water in the interlayer under particular cases, in which the fermentation tank is the biogas tank to heat and preserve heat, to realize the fermentation of the fermentation biogas tank under the optimum temperature condition, thus offsetting the unfavorable effects of the change of natural temperature on the fermentation and obtaining the effect of stable and high efficient biogas production in cold areas where temperature changes greatly.

Description

Technical field [0001] The invention belongs to biochemical technology, and specifically relates to a biogas constant temperature fermentation device. Background technique [0002] It is well known that the promotion of biogas production in rural areas is a great thing that benefits the country and the people. The gas fuel and high-quality organic fertilizer obtained can not only promote the improvement of rural life and civilization. Particularly beneficial to environmental protection, it can eliminate the direct environmental pollution caused by excess straw, human and animal manure and organic domestic waste, and can replace over-applied chemical fertilizers by increasing the amount of organic fertilizers, in addition to reducing the degradation of the soil caused by chemical fertilizers In addition to pollution caused by surface water, it can quickly restore and improve soil fertility, produce high-quality crops, and improve human health. Relevant national departments have pr...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a solar constant temperature fermentation biogas digester, which can eliminate the influence of the natural environment on the fermentation temperature, and overcome the shortcomings of the existing biogas fermentation ponds in cold regions where gas production is unstable or even impossible.

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