Wet anaerobic fermentation stirring and heat exchange method and wet anaerobic fermentation system

Abstract

The invention relates to a wet anaerobic fermentation system which comprises an anaerobic fermentation tank, a circulating pump and a booster pump. A vertical sleeve with a flow channel is arranged inthe anaerobic fermentation tank; and the anaerobic fermentation tank is provided with a liquid outlet, a biogas outlet, an upper liquid inlet and a lower liquid inlet. The invention further relates to a wet anaerobic fermentation stirring and heat exchange method. Liquid in the anaerobic fermentation tank flows out through the circulating pump and then flows back into the anaerobic fermentation tank to carry out stirring for the first time; biogas in the anaerobic fermentation tank is pressurized through the booster pump and then the gas is input into the vertical sleeve arranged in the anaerobic fermentation tank, so that the liquid in the vertical sleeve flows upwards, and external liquid flows downwards to be subjected to secondary stirring; and a heat exchange medium flows through theflow channel to exchange heat with the liquid in the anaerobic fermentation tank. The anaerobic fermentation tank has the advantages of being high in degradation efficiency and capable of resisting the distance on the degradation efficiency by the environment temperature; and problems that the anaerobic degradation efficiency is low, and the degradation efficiency is greatly influenced by the environment temperature when the existing anaerobic fermentation tank is used for anaerobic degradation can be solved.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to a wet anaerobic fermentation stirring and heat exchange method and a wet anaerobic fermentation system. Background technique [0002] Garbage disposal methods include: sorting and recycling. [0003] Landfill: Landfill treatment requires a large amount of land. At the same time, harmful components in garbage will also cause serious pollution to the atmosphere, soil and water sources, which not only destroys the ecological environment, but also seriously endangers human health. [0004] Composting: The composting process sorts and classifies the garbage, and the organic content of the garbage is required to be high. Moreover, composting cannot be reduced, and a large amount of land is still needed. [0005] Incineration: The essence of incineration is to oxidize organic waste into inert gaseous substances and inorganic non-combustible substances under the conditions o...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a wet anaerobic fermentation system and a wet anaerobic fermentation stirring and heat exchange method with high degradation efficiency and resistance to the influence of ambient temperature on the degradation efficiency, which solves the problem of anaerobic degradation in existing anaerobic fermentation tanks The existing problems of low anaerobic degradation efficiency and degradation efficiency are greatly affected by ambient temperature

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