Anaerobic fermentation system

Abstract

The invention brings forward an anaerobic fermentation system which at least comprises a fermentation cylinder provided with a feed inlet, a blending pool arranged out of the fermentation cylinder and provided with a discharge outlet which communicates with the feed inlet of the fermentation cylinder to form a feeding pipeline of the fermentation cylinder, and a heater which heats the blending pool. The anaerobic fermentation system provided in the invention can substitute the existing fermentation tanks which cost a lot and can be installed flexibly; the anaerobic fermentation system is provided with a stirring device that is easy to install, examine, repair and adjust, which enables adequate stirring of liquid materials to be realized; the system has a crushing and cycling system which is capable of removing slag and crushing crusts, a high-efficiency heating means for fermentation broth, and a control system capable of intelligent adjusting according to temperature of liquid materials and feeding amount.

Description

technical field [0001] The invention relates to an anaerobic fermentation system, in particular to an anaerobic fermentation system in biogas engineering. Background technique [0002] The fermentation system plays a very critical role in the biogas project, and it is also the part with the largest investment in the project. An excellent system should fully consider the economic rationality of tank equipment, the effect of mixing and intelligent control, etc. It is the most important means to enhance fermentation and increase gas production rate. The main problems with the current system are: [0003] The side wall of the existing lipp tank (lipp tank) adopts a special machine to hem the splicing of the steel plates, which leads to high installation costs and a high overall cost; [0004] For large and medium-sized biogas projects, the volume of the fermentation tank is usually large, and the concentration and temperature of the material liquid in the tank are difficult to...

AI Technical Summary

Problems solved by technology

[0006] The heating efficiency is low. At present, the heating of the tank body mainly includes two heating methods: the outside of the tank wall and the inside. The heat transfer coefficient of the contact material liquid is very low

When the inside is heated, the heating tube is set in the feed liquid in the tank. The heating tube is located in the feed liquid. The heating tube is easy to corrode. At the same time, the inner heating tube is prone to fouling on the outer surface, resulting in low heat exchange efficiency.

Maintenance is very difficult, production needs to be stopped for maintenance, and it takes a long time to restart the fermenter, usually about 45 days, which has a great impact on the annual gas production

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