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Device and method for cracking scum on the top of biogas fermentation tank

A technology of biogas fermentation and shell breaking device, which is applied in the direction of bioreactor/fermenter combination, fermentation, and specific-purpose bioreactor/fermenter, which can solve the problems of scum crusting and other problems, and achieve the effect of improving utilization efficiency

Inactive Publication Date: 2019-08-13
BIOGAS SCI RES INST MIN OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can effectively solve the problem of crusting on the top of the scum in the process of biogas fermentation, improve the utilization efficiency of raw materials in biogas fermentation, and is beneficial to solve the problem of discharging easily crusted raw materials in the process of biogas fermentation

Method used

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  • Device and method for cracking scum on the top of biogas fermentation tank

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Experimental program
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Effect test

Embodiment 1

[0028] A shell-breaking device for scum at the top of a biogas fermentation tank, comprising a guide tube 2 and an agitator, the guide tube 2 is arranged in a biogas fermentation tank 4, and the upper end and the lower end of the guide tube 2 are set in the shape of a bell mouth, The middle part is cylindrical, and the top surface of the bell mouth at the upper end of the guide tube 2 is lower than the liquid level in the biogas fermentation tank 4; the agitator includes a motor, a reducer, a stirring shaft 5 and a stirring blade 3, and the motor is arranged outside the biogas fermentation tank 4 The top of the top, the stirring paddle 3 is located below the bell mouth of the lower end of the guide tube 2, one end of the stirring shaft 5 is connected to the motor through the reducer, and the other end passes through the inner cavity of the guide tube 2 and is connected to the stirring paddle 3.

[0029] A preferred implementation of this embodiment is that the cracking device f...

Embodiment 2

[0039] This embodiment further illustrates the present invention in conjunction with the accompanying drawings.

[0040] Such as figure 1 As shown, a scum cracking device at the top of a biogas fermentation tank includes a draft tube 2 , an agitator and a baffle 1 . The upper and lower bell mouths of the guide tube 2 are cylindrical in the middle, the stirring paddle 3 is located under the lower bell mouth of the guide tube 2, and the baffles 1 are set in the same direction, and are 45 o Welded on the wall of the biogas fermentation tank 4.

[0041] The upper part of the guide tube 2 is provided with a bell mouth, and the top surface is lower than the liquid level in the methane fermentation tank 4 . The lower part of the guide tube 2 is provided with a bell mouth, and the diameter of the bell mouth is larger than the diameter of the stirring paddle 3 .

[0042] The stirring paddle 3 is arranged under the bell mouth of the lower part of the guide tube 2, and the suction gen...

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Abstract

The invention discloses a biogas fermentation tank top scum shell breaking device and a shell breaking method. The shell breaking device comprises a guide cylinder and a stirrer. The guide cylinder is arranged in a biogas fermentation tank. The upper and lower ends of the guide cylinder are in a shape of a horn mouth. The middle of the guide cylinder is cylindrical. The top surface of the horn mouth at the upper end of the guide cylinder is lower than the liquid surface in the biogas fermentation tank. The stirrer comprises a motor, a reducer, a stirring shaft and stirring blades. The motor is arranged on the top of the biogas fermentation tank. The stirring blades are located below the horn mouth at the lower end of the guide cylinder. One end of the stirring shaft is connected to the motor through the reducer and the other end passes through the inner cavity of the guide cylinder and is connected to the stirring blades. The device can effectively solve the problem of caking of scum top in a biogas fermentation process, improves a raw material use rate in biogas fermentation and solves the problem of discharge of easily caked raw materials in biogas fermentation.

Description

technical field [0001] The invention relates to a shell breaking device for the scum on the top of a biogas fermentation tank and a shell breaking method thereof, and relates to the technical field of biogas pool construction. Background technique [0002] At present, there are more and more large-scale and medium-sized biogas projects using straw, cow dung, sheep dung, rabbit dung, etc. as raw materials. The phenomenon of slag crusting affects the effect of biogas fermentation, and even the accident of breaking the top of the fermentation tank due to too thick scum. [0003] In order to solve the above problems, biogas digesters with shell breaking function have appeared in the prior art. For example, Chinese Patent Publication No. CN104388303A discloses a biogas digester shell cracker disclosed on March 04, 2015, which includes a biogas digester with a pool cover at the mouth of the pool. A shell-breaking device extending to the liquid surface is installed below through ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/107C12M1/02C12P5/02
CPCC12M21/04C12M27/02C12M27/24C12P5/023Y02E50/30
Inventor 王智勇宋立蒲小东刘刈邓良伟
Owner BIOGAS SCI RES INST MIN OF AGRI
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