Material stirring device and method for producing biogas through anaerobic fermentation

Abstract

The embodiment of the invention discloses a material stirring device and method for producing biogas through anaerobic fermentation, and relates to the field of waste treatment. The material stirringdevice comprises a fermentation tank, a guide cylinder, a biogas cycling treatment device, a first circulating device and a second circulating device, and the upper part of the side wall of the fermentation tank is provided with a first circulation outlet and three first circulation inlets; the lower part of the side wall of the fermentation tank is provided with a feeding pipe, a second circulation inlet and a second circulation outlet; a liquid inlet of the first circulating device communicates with the first circulation outlet, and a liquid outlet of the first circulating device communicates with the second circulation inlet; and a liquid inlet of the second circulating device communicates with the second circulation outlet, and a liquid outlet of the second circulating device communicates with the first circulation inlets. Compared with a traditional mechanical stirring device, the stirring device disclosed by the embodiment of the invention has the advantages that the stirring process saves more energy, and the operation is more stable; the operation cost can be reduced effectively, and the material stirring device is applicable for large fermentation tanks; the stirring is more thorough, and the material homogenization and heat conduction are achieved more properly.

Description

technical field [0001] The embodiments of the present invention relate to the field of garbage treatment, and in particular to a material stirring device and method for anaerobic fermentation to generate biogas. Background technique [0002] Kitchen waste or other organic waste (kitchen waste, livestock and poultry manure, etc.) is rich in biological organic matter. At home and abroad, these organic wastes are usually treated by anaerobic fermentation to produce biogas, so as to realize solid waste treatment and produce biomass at the same time. energy. [0003] The anaerobic fermentation process requires continuous and effective stirring to ensure that the materials in the anaerobic fermentation tank are homogeneous, promote heat transfer, and ensure that the microorganisms in the fermentation tank are in full contact with the fermentation material, as well as the rapid dispersion and final degradation of the intermediate process products. . [0004] Existing anaerobic fe...

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Problems solved by technology

[0006] For this reason, the embodiment of the present invention provides a material stirring device and method for anaerobic fermentation to produce biogas, so as to solve the existing anaerobic fermentation reactors that are difficult to produce, difficult to achieve material homogeneity, difficult to maintain, and requirements for materials. High and low biogas yield

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