Method for insulating anaerobic fermentation tank in solar pond

Abstract

The invention relates to a method for insulating an anaerobic fermentation tank by using a solar pond. The salt solar pond is directly used for insulating an anaerobic fermentation tank body, and heat in the solar pond is not extracted and used. Key units required in the method comprise a salt gradient solar pond, an anaerobic reactor, a transfer pump, a gas storage bin and a tank body support. Efficient insulation of the fermentation tank in the solar pond is realized, and costs of thermal insulation materials of a methane pot are saved. Compared with the traditional solar pond heat extracting mode, the method has the advantages that electric energy used for a heat extraction medium flowing water pump is saved, flowing of a lower convection layer in the solar pond is reduced, convection heat transfer between the lower convection layer and a non-convection layer is reduced, and insulation capability of the solar pond is improved. The method is suitable for insulating the anaerobic fermentation tank. In addition, complex pipe laying is not required in the method, and costs of gas yielding and insulating are greatly reduced.

Description

technical field [0001] The invention relates to a specific method for an anaerobic reactor using a solar pond for heat preservation, and belongs to the technical field of biogas production and utilization. Background technique [0002] At present, most of the anaerobic reactors put into use are not kept warm, resulting in the failure of normal fermentation. The heating methods put into use today include solar hot water heating, electric heating, boiler heating, etc. Although the heat preservation effect is obvious, the return on return is low For biogas production, the investment is relatively large. The salt gradient solar pool is an artificial salt water pool that uses solar radiation as its energy source. It uses pool water with a certain salt concentration gradient as a heat collector. There are two traditional heating methods. The first is to arrange heat exchange at the bottom of the pool. The second is to extract the hot water in the pool from one end of the lower co...

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Problems solved by technology

The essence of these two methods is to extract heat for heat exchange. It is relatively difficult to popularize heat-insulated anaerobic reactors. So far, there are still few studies on the application of salt-gradient solar ponds with good heat storage for anaerobic reactors.

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