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Anti-wall sticking fermentation device based on combined stirring

The technology of a fermentation device and a stirring device is applied in the fields of fermentation devices and anti-adherence fermentation devices, which can solve the problems of low mass transfer efficiency, etc., and achieve the effects of large dissolved oxygen, avoiding product accumulation and small shearing force.

Inactive Publication Date: 2021-08-24
莱西市产业技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anti-adherence stirring system improves the stirring efficiency of the fermenter while reducing the influence of shear force and wall attachment during the fermentation process, and solves the problem of low mass transfer efficiency in the fermentation of high-viscosity materials represented by filamentous fungi

Method used

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  • Anti-wall sticking fermentation device based on combined stirring
  • Anti-wall sticking fermentation device based on combined stirring
  • Anti-wall sticking fermentation device based on combined stirring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The anti-adherence fermentation device based on combined stirring includes a tank body, a stirring device and an anti-adherence system arranged inside the tank body. The tank radius R is 1 m. The stirring device includes a stirring shaft 3 and a stirring paddle; the stirring shaft 3 is fixedly connected with a driving gear 4, and the driving gear 4 meshes with the transmission gear 5 to obtain power. The stirring paddle is a ribbon-type stirring paddle 1, and the ribbon-type stirring paddle 1 is connected to the stirring shaft 3 through a connecting rod 2. The length d of the connecting rod 2 1 0.8m (0.5-0.8 times the tank radius R). The ribbon width of the ribbon type stirring paddle 1 is 8cm. The pitch d of the screw-type stirring paddle 1 2 is 0.8m (0.5-2 times of D), and the diameter D of the stirring paddle is 1.6m; the rotating speed of the ribbon type stirring paddle 1 is 20-100rpm.

[0019] The anti-adherence system is composed of a transmission rod 6, a sl...

Embodiment 2

[0020] Embodiment 2: Different from Embodiment 1,

[0021] The tank radius R of the anti-adherence fermentation device based on combined stirring is 0.6m. The length d of the connecting rod 2 1 It is 0.48m (0.5-0.8 times of the tank radius R). The ribbon width of the ribbon type stirring paddle 1 is 5cm. The pitch d of the screw-type stirring paddle 1 2 The diameter D is 1.92m (0.5-2 times of D), and the diameter D is 0.96m; the rotating speed of the ribbon type stirring paddle 1 is 20-100rpm.

[0022] The annular scraper is inclined upward in the vertical direction, and the angle between the edge of the annular scraper 11 and the side wall of the tank body is 30°. The radius ratio between the transmission gear 5 and the driving gear 4 is 20. A plurality of circular holes with a diameter of 2 cm are arranged on the ribbon-type stirring paddle 1, and the distance between the adjacent circular holes is 30 cm. The ratio of the length to the pitch of the two-way thread 7 is ...

Embodiment 3

[0023] Embodiment 3: Different from Embodiment 1,

[0024] The tank radius R of the anti-adherence fermentation device based on combined stirring is 1.5m. The length d of the connecting rod 2 1 1m. The ribbon width of the ribbon type stirring paddle 1 is 7cm. The pitch d of the screw-type stirring paddle 1 2 The diameter is 1.2m (0.5-2 times of D), and the diameter D is 2m; the rotating speed of the ribbon stirring paddle 1 is 20-100rpm.

[0025] The annular scraper is inclined upward in the vertical direction, and the angle between the edge of the annular scraper 11 and the side wall of the tank body is 35°. The radius ratio between the transmission gear 5 and the driving gear 4 is 2. A plurality of round holes with a diameter of 1 cm are arranged on the ribbon-type stirring paddle 1, and the distance between the adjacent round holes is 38 cm. The ratio of the length to the pitch of the two-way thread 7 is 50:1; the distance between the tip of the annular scraper 11 and...

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Abstract

In order to solve the problems of a high-viscosity material fermentation device in the prior art, the invention provides the anti-wall-sticking stirring system based on combined stirring. The anti-wall-sticking fermentation device comprises a tank body, and a stirring device and an anti-wall-sticking system which are arranged in the tank body. The stirring device comprises a stirring shaft and a stirring paddle; the stirring paddle is a helical ribbon type stirring paddle, and the helical ribbon type stirring paddle is connected with the stirring shaft through a connecting rod. And a transmission rod and a guide rail of the anti-wall sticking system are fixedly arranged at the top of the tank body. The upper end of the transmission rod is fixedly connected with the transmission gear, and the lower end of the transmission rod is provided with a two-way thread and is connected with the sliding block through the two-way thread. The sliding block is connected with the guide rail in a sliding mode, and the annular scraper is fixedly connected with the sliding block through a fixing support. According to the anti-wall sticking stirring system, the stirring efficiency of the fermentation tank is improved, meanwhile, the influence of shear force and wall sticking in the fermentation process is reduced, and the problem that the mass transfer efficiency is low in the fermentation process of high-viscosity materials represented by filamentous fungi is solved.

Description

technical field [0001] The invention belongs to the technical field of fermentation engineering and equipment, and relates to a fermentation device, in particular to an anti-adherence fermentation device based on combined stirring. Background technique [0002] Stirring is an important step in biological fermentation. In ordinary stirred bioreactors, when the solid content is higher than 10%, there will be problems in mixing, mass transfer, heat transfer and high energy consumption, resulting in low conversion rate of final raw materials , low concentration of fermentation products and other shortcomings. The fermentation liquid of high-viscosity materials is usually paste-like with high viscosity, so there are many blind spots in the stirring, resulting in large differences in the oxygen exchange effect of the gas-liquid interface in different regions, and the axial and radial movements of the fermentation liquid are in the stirring area. There is a big difference between ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/02C12M1/00
CPCC12M27/02C12M39/00
Inventor 周晓峰宋晓金高旭光朱玉军
Owner 莱西市产业技术研究院
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