Aerobic fermentation heat recycling equipment for coupling agricultural and forestry waste and breeding excrement

Abstract

The invention discloses agricultural and forestry waste coupled breeding manure aerobic fermentation heat recycling equipment. The equipment comprises a fermentation tank; the first heat exchanger is arranged in the fermentation tank, a water inlet of the first heat exchanger is connected with a first water inlet pipe, and a water outlet of the first heat exchanger is connected with a first water outlet pipe; the first heat storage water tank is arranged in the fermentation tank, a water inlet of the first heat storage water tank is communicated with a pipe opening, away from the first heat exchanger, of the first water outlet pipe, a water outlet of the first heat storage water tank is connected with a second water outlet pipe, and a pipe opening, away from the first heat storage water tank, of the second water outlet pipe extends out of the fermentation tank; the heat utilization system is positioned outside the fermentation tank and is connected with the first water inlet pipe and the second water outlet pipe through a first pipeline. The first heat exchanger and the first heat storage water tank of the heat recovery equipment are both positioned in the fermentation tank, so that heat can be recovered and stored to the greatest extent, and the heat recovery equipment is convenient to mount, popularize and use.

Description

technical field [0001] The invention relates to the technical field of heat recovery devices, and more specifically relates to a heat recovery and utilization device for aerobic fermentation of agricultural and forestry waste coupled with aquaculture manure. Background technique [0002] There is a serious disconnect between production capacity and energy consumption in the rural areas of northern my country. On the one hand, heating in northern rural areas is mainly based on burning loose coal with high nitrogen and sulfur content, which has caused serious air pollution and increased carbon emissions. On the other hand, although my country's agricultural and forestry wastes, manure and other energetic biomass resources are abundant, they have not been rationally utilized. For example, my country's annual output of straw is as high as 900 million tons (its energy is equivalent to 450 million tons of standard coal), but a large amount is burned or abandoned on the roadside. ...

AI Technical Summary

Problems solved by technology

At present, there are still a series of problems in the research on aerobic fermentation heat recovery equipment, such as low heat utilization efficiency, insufficient internal oxygen supply, and imbalance between heat production and heat consumption.

For example, the utility model patent application number CN202020606940.6 discloses a composting heat utilization recovery system that only uses sensible heat from the edge of the fermentation system, and does not utilize the excess heat inside the reaction system.

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