Multi-cycle stirring egg-shaped anaerobic fermentation system

Abstract

The invention discloses a multi-cycle stirring egg-shaped anaerobic fermentation system. The system comprises a fermentation tank body and a driving device arranged on the fermentation tank body, wherein the fermentation tank body is egg-shaped, the center of the inner cavity of the fermentation tank body is provided with an inner barrel type spiral stirrer, the outside of the inner barrel type spiral stirrer is provided with a stirrer inner barrel, a temperature heating device is arranged between the wall of the fermentation tank body and the stirrer inner barrel, the bottom of the inside ofthe tank is provided with an umbrella-shaped gas flow distribution device; the upper part of the fermentation tank body is provided with a vent pipe and a pressure control device, the bottom of the fermentation tank body is provided with an umbrella-shaped gas flow distribution device gas inlet pipe and a mud-discharging and sand-discharging outlet; and the side wall of the fermentation tank bodyis communicated with a biogas circulation system, a biogas slurry circulation system, a gas-liquid circulation system, a heating system, a temperature control system and a biogas residue and biogas slurry storage pool respectively. The multi-cycle stirring egg-shaped anaerobic fermentation system adopts multi-cycle stirring to increase the stirring efficiency of the system; and the anaerobic fermentation environment is improved, the fluid is mixed evenly, the temperature difference slightly fluctuates, the energy consumption of the system is low, the fermentation rate is high and the system is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of fermentation, and in particular relates to a high-efficiency, energy-saving and multi-circulation stirred egg-shaped anaerobic fermentation system, in particular to a system for anaerobic fermentation treatment of large-scale biogas engineering of livestock and poultry manure and crop stalks. Background technique [0002] In recent years, with the rapid development of large-scale livestock and poultry breeding industry, a large number of relatively concentrated livestock and poultry manure, sewage and other wastes have been produced one after another. Due to the inadequacy of supporting technologies for large-scale farming, the air quality around large-scale livestock and poultry breeding enterprises continues to deteriorate. In addition, the sewage discharged from the farm contains a large amount of organic matter, which seriously pollutes the surrounding environment. From the perspective of national en...

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Problems solved by technology

However, for large-scale anaerobic biogas projects, the existing stirring devices (mechanical or airflow), heating devices, and temperature control devices cannot guarantee the effective and stable operation of the fermentation system throughout the year

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