Resourceful marsh gas treatment system based on integrated CSTR reactor

Abstract

The invention discloses a resourceful marsh gas treatment system based on an integrated CSTR reactor. The resourceful marsh gas treatment system comprises a straw storage bin, a rapid degradation tank, a hydrolysis tank, an independent heat exchanger, the integrated CSTR reactor, a biogas purification device, a foliar fertilizer bin, a marsh gas temporary-storage pool, a solid-liquid separator and an organic fertilizer bin. The integrated CSTR reactor comprises a tank body, a motor, a reverse stirring device and a reflux system. The reflux system and the reverse stirring device are added in the integrated CSTR reactor so that the resourceful marsh gas treatment system can effectively improve the mixing efficiency of crushed straws and anaerobic fermentation liquor and facilitate improvement of the marsh gas production efficiency of the straws. In addition, a propeller is added at a discharging port of the resourceful marsh gas treatment system, and waste can be quickly discharged from the tank body.

Description

[0001] The application of the present invention is a divisional application of the parent application "Biogas Resource Treatment System Based on CSTR Fermentation Device". The application number of the parent application is 2015101796836, and the application date is April 15, 2015. technical field [0002] The invention belongs to the technical field of biogas preparation, in particular to a biogas resource processing system based on a CSTR integrated reactor. Background technique [0003] my country is a large agricultural country, and the sown area of ​​crops ranks first in the world. According to statistics, my country currently produces about 700 million tons of straw every year. In the past, crop straws were mostly used as fuel, but with the continuous improvement of people's living standards in our country, as well as the development of rural economy and the improvement of energy supply, in recent years, farmers' burning and utilization of straws have gradually decrease...

AI Technical Summary

Problems solved by technology

[0004] Straw dry fermentation to produce biogas is rice, corn, peanut and other crop straw as raw material, after crushing and adding fermentative agent for stack retting and other pretreatments, it is added to anaerobic fermentation device for anaerobic fermentation to produce biogas and organic fertilizer. In industrial production, CSTR reactor (continuous stirred tank reactor, continuous stirred reactor system) is usually used as an anaerobic fermentation device to produce biogas. The stirring efficiency of traditional anaerobic fermentation devices needs to be improved, and the level of stirring efficiency directly affects the straw Fermentation efficiency and biogas production rate; In addition, when the fermentation is completed, the waste needs to be discharged from the fermentation device. Because the waste has a certain viscosity, the waste is not easy to discharge and the waste often sticks to the inner wall of the device.

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