Self-heating methane tank

Abstract

The invention discloses a self-heating methane tank, which comprises a fermentation chamber. A cone is horizontally arranged inside the fermentation chamber; and the liquid level of the fermentation liquor is not lower than the bottom surface of the cone and not higher than the top end of the cone. During use, methane is generated inside fermentation materials; solid materials are pushed by the methane so as to float on the surface of the fermentation liquor, wherein a part of solid materials ascend and stack along the inclined side face of the cone; after stacking to a certain thickness, thesolid materials begin to release heat and ferment under the action of microbes; the fermented and decomposed materials fall into the fermentation liquor; the residual solid materials on the surface of the fermentation liquor continuously stack on the cone; and the self-heating effect is achieved through circulation. The decomposition of the solid materials makes caking difficultly generate on thesurface of the fermentation liquor, and the methane can be normally exhausted. The self-heating methane tank with the structure can be normally used in four seasons throughout the year, is hard to generate caking on the surface of the fermentation liquor in the using process, does not need a mixing device or blocking rod, has the advantages of simple structure, convenient use, easy implementationand low cost, and is suitable for wide popularization and application in rural areas.

Description

technical field [0001] The invention relates to a biogas digester, in particular to a self-heating biogas digester. Background technique [0002] The use of biogas produced by the fermentation of plant residues and animal manure as energy for production and living has become an important form of rural energy supply. The biogas fermentation temperature is greatly affected by the ground temperature, and the ground temperature is also affected by the air temperature. In the range of 10-30 °C, the higher the temperature, the greater the gas production. When the pool temperature drops below 10 °C, the biogas production will gradually stop. gas. At present, most of the biogas digesters built in rural areas are in the form of normal temperature fermentation. The average daily temperature from November to March in northern my country is mostly lower than 10°C, which is not conducive to biogas fermentation. Except for biogas digesters built under solar heating circles, the normal a...

AI Technical Summary

Problems solved by technology

[0005] At the same time, during the fermentation process of the biogas digester, the biogas cannot be released normally due to the agglomeration of the fermentation liquid surface. Therefore, many biogas digesters are equipped with a stirring device in the fermentation chamber, or a blocking rod is installed above the fermentation chamber cavity. When the material falls, it will stop The rod crushes the agglomerated material, so that the biogas can be released, and the stirring device increases the construction cost of the biogas digester, and the structure of the blocking rod is often severely corroded and needs to be replaced, which is inconvenient to use

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