Large granular straw biogas fermentation device

Abstract

The invention belongs to a large granular straw biogas fermentation device in the field of an energy source. The large granular straw biogas fermentation device is composed of a fermentation tank (11) and a liquid storage unit (1), wherein a feeding pipe (10) and a biogas pipe orifice (9) are arranged at the top part of the tank body; a slag discharge hole (7) is arranged at the bottom part of the tank body; a gravity pusher (6) is arranged inside the feeding pipe (10); the gravity pusher (6) seals the feeding pipe (10); a circular table slag baffle ring plate (14) is arranged at the upper part inside the tank body; the upper end of the slag baffle ring plate (14) is connected with the outlet of the feeding pipe (10); the lower end of the slag baffle ring plate (14) is connected with the inner wall of the tank body; a sieve hole is arranged on the ring plate; a liquid slag separating plate (16) is arranged at the lower part inside the tank body; the periphery is connected with the inner wall of the tank body; a bleeder tube (3) is arranged at the bottom part of the fermentation tank (11), and a sieve plate (18) or/and a porous slag frame are arranged in the liquid storage unit (1). The large granular straw biogas fermentation device provided by the invention can directly digest the large granular straw, is low in energy consumption and low in input-output ratio, and can smoothly feed and discharge.

Description

technical field [0001] The invention belongs to the field of energy, and in particular relates to a large-grain straw biogas fermentation device. Background technique [0002] Crop stalks come from a wide range of sources, and the amount of resources is large. A large amount of stalks cannot be effectively treated, which brings a series of environmental problems. Straw biogas utilization can effectively solve this problem, and at the same time produce high-quality bioenergy—biogas, which has become one of the important means of straw resource utilization. The raw materials of existing straw continuous fermentation devices generally need to be pretreated such as crushing, because of their poor fluidity, mechanical stirring is usually required to achieve mass and heat transfer. The specific gravity of the straw is light, and it is easy to float up to form a hard shell after entering the fermentation device, which hinders the accumulation of biogas generated in the pond and re...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of low material concentration, low utilization rate of raw materials, relying on mechanical equipment, large investment in equipment, high energy consumption, and low efficiency of anaerobic digestion a...

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