Dry-method anaerobic fermentation device

Abstract

The invention discloses a dry-method anaerobic fermentation device which comprises a fermentation tank, a first bracket, stirring shafts, a motor, a coupler, stirring arms and stirring paddles, wherein the first bracket is arranged on the outer side of the fermentation tank; the motor is arranged on the first bracket; stirring shaft holes are formed in the fermentation tank; the stirring shafts penetrate through the stirring shaft holes and are connected to the coupler; the coupler is connected onto the motor; one end of each stirring arm is connected onto each stirring shaft; and each stirring paddle is arranged at the other end of each stirring arm. The stirring shafts are averagely distributed on the cross section on the inner wall of the fermentation tank; and the stirring shafts and the fermentation tank deflect clockwise or anticlockwise for an angle of 15-45 degrees. According to the dry-method anaerobic fermentation device disclosed by the invention, the processing rate of materials is high, the fermentation effect is favorable and the problems of local acidification phenomenon and poor heating and heat transferring effects caused by poor stirring uniformity of the materials are solved; and meanwhile, the problems of scum on the upper layer, crusting prevention and the like are solved.

Description

technical field [0001] The invention relates to a dry anaerobic fermentation device. Background technique [0002] Anaerobic fermentation is divided into dry method and wet method. [0003] Wet fermentation process method: the solid content of the material is usually less than 10%, because the fermentation process technology is relatively mature, the material fluidity is good, and it is easy to stir evenly; so it is widely used. However, the water content of the material is high, the heating energy consumption is high, and the fermenter with a larger capacity is required compared with the dry fermentation process, resulting in a corresponding increase in project investment. Moreover, the water consumption and energy consumption of the wet fermentation process are large, the amount of products after fermentation is large, and the downstream dehydration and water treatment processes have a heavy burden, and the operating cost due to high energy consumption will also increase....

AI Technical Summary

Problems solved by technology

[0005] The invention provides a dry anaerobic fermentation device, which solves the shortcomings of difficult material stirring, material crusting and poor heating and heat transfer

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