Method for stirring fermentation materials in dry fermentation tank

Abstract

The invention relates to a method for stirring fermentation materials in a dry fermentation tank and belongs to the field of fermentation of organic matter. Dry fermentation and wet fermentation are adopted for fermentation of the organic matter in the field. Dry fermentation is better than wet fermentation in production efficiency, energy consumption and other aspects. However, stirring is difficult in production process of dry fermentation, which always restricts popularization of the dry fermentation process. A stirring method in the dry fermentation process is always a problem in the fieldof fermentation. Compared with the traditional mechanical stirring, high-pressure water stirring, high-pressure gas stirring methods, the stirring method has the following advantages: (1) the problemthat high-viscosity substances cannot be dispersed or uniformly stirred by mechanical stirring is solved; (2) the problems that stirred substances can be only segmented into a plurality of medium andsmall blocks but cannot be dispersed completely or uniformly stirred when the high-viscosity substances are stirred with high-pressure water are solved; (3) the problem that the stirred substances can be only loosened, that is, the affinity is reduced, but the stirred substances cannot be pulled to flow to be stirred when the high-viscosity substances are stirred with high-pressure gas is solved.

Description

technical field [0001] The invention relates to a method for stirring fermented matter in anaerobic dry fermentation. Background technique [0002] my country produces 2 billion tons of fermentables (poultry manure, livestock manure, straw, etc.) every year. The development and utilization of these fermentable substances will inevitably encounter fermentation problems. The current fermentation methods mainly contain wet fermentation and dry fermentation. Wet fermentation refers to a fermentation method in which the solid content of the fermented product is less than 10%. Dry fermentation refers to a fermentation method with a solid content of about 30%. The more common method used in our country is the wet fermentation method. Its advantages are: easy to transport, easy to stir, and easy to control the various procedures in the fermentation process. The disadvantages are: the fermentation efficiency is low and the space occupied is large. Because the moisture content o...

AI Technical Summary

Problems solved by technology

Disadvantages are: low fermentation efficiency and large space occupation

The disadvantages are: due to the high solid content of the material, the viscosity of the material is large, the fermented product is not easy to be broken up, the fluidity is poor, and it is difficult to stir.

It can be seen that the stirring of the fermented product has become a "bottleneck" restricting the development of dry fermentation process

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