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Fermentation process adopting material outside circulation and equipment thereof

A technology of fermentation process and fermentation equipment, which is applied in the field of fermentation process, can solve the problems of poor mixing effect of air and materials, inability to form jets in nozzles, and inconspicuous fermentation effect, so as to shorten the fermentation cycle, ensure sealing and independence, and reduce The effect of energy consumption

Inactive Publication Date: 2009-09-23
RIZHAO JINHE BOYUAN BIOCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the injector is installed in the tank to eject the fermentation material, but because the kinetic energy of the air is relatively small compared to the material, the ejection effect produced is weak and cannot drive the material in the entire tank, so some nozzles cannot form a jet flow, and the air The mixing effect with the material is poor, and the fermentation effect is not obvious when the oxygen content of the material is low. In order to solve this problem, the current common practice is to use mechanical stirring to promote the further mixing of gas and liquid, but it is necessary to drive the whole tank. Materials still require strong mechanical energy, which leads to a significant increase in energy consumption. For the entire enterprise, the effect of energy saving in production is not significant
In the improvement of the existing fermentation tank and fermentation process, some enterprises once increased the injection capacity of the injector in order to achieve a better mixing effect, but this caused the fermentation bacteria to be destroyed, and the overall fermentation effect did not increase. drop, and the energy consumption did not drop

Method used

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  • Fermentation process adopting material outside circulation and equipment thereof
  • Fermentation process adopting material outside circulation and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] at 500m 3 Put the material in the fermentation tank to 90% of the total volume, heat the material to 100°C to sterilize for 30 minutes, cool down to 20°C-40°C, inoculate the fermentation bacteria, ventilate, and then turn on the circulation pump to start fermentation and control the flow of the circulation pump 2500m 3 / h-4000m 3 / h, the amount of air sucked by the injector is from 1000m 3 / h-4000m 3 / h adjustment, the air pressure is 0.2MPa-0.35MPa, and the feed liquid mixed with air by the injector is sent back to the fermenter by the injector.

[0019] After adopting this fermentation process, the amount of dissolved oxygen in fermentation is 4 times that of the original fermentation process, the fermentation cycle is reduced by 10 hours, and the power consumption is 40% lower than that of traditional fermentation tanks.

Embodiment 2

[0021] at 50m 3 Put the material in the fermentation tank to 75% of the total volume, heat the material to 110°C to sterilize for 60 minutes, cool down to 30°C-50°C, inoculate the fermentation bacteria, ventilate, and then turn on the circulation pump to start fermentation and control the flow of the circulation pump 250m 3 / h-500m 3 / h, the amount of air inhaled by the injector is from 200m 3 / h-400m 3 / h adjustment, the air pressure is 0.2MPa-0.50MPa, and the feed liquid mixed with air by the injector is sent back to the fermenter by the injector.

[0022] After adopting this process, the amount of dissolved oxygen in fermentation is 2.5 times that of the original fermentation process, the fermentation cycle is reduced by 3 hours compared with the same period last year, and the power consumption is reduced by 25% compared with traditional fermentation tanks.

Embodiment 3

[0024]at 1000m 3 Put the material in the fermentation tank to 80% of the total volume, heat the material to 70°C to sterilize for 40 minutes, cool down to 35°C-50°C, inoculate the fermentation bacteria, ventilate, and then turn on the circulation pump to start fermentation and control the flow of the circulation pump 5000m 3 / h-8000m 3 / h, the amount of air inhaled by the ejector is from 4000m 3 / h-7500m 3 / h adjustment, the air pressure is 0.35MPa-0.45MPa, and the feed liquid mixed with air by the injector is sent back to the fermenter by the injector.

[0025] After adopting this process, the amount of dissolved oxygen in fermentation is 5 times that of the original fermentation process, the fermentation cycle is reduced by 8 hours compared with the same period last year, and the power consumption is reduced by 55% compared with the traditional fermentation tank.

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Abstract

The invention relates to an aerobic fermentation process and equipment, in particular to a brand new aerobic fermentation process adopting material jar outside circulation and equipment thereof. The process adopts the mode that materials circulate outside a jar so as to achieve the aim of sufficiently mixing air and material liquid, thereby improving the efficiency of fermentation, reducing the energy consumption required by the whole process and improving the production efficiency of enterprises.

Description

technical field [0001] The invention relates to a fermentation process, in particular to an aerobic fermentation process using material tank external circulation and equipment thereof. Background technique [0002] In the fermentation-related industries, aerobic fermentation is the most common one. Aerobic fermentation refers to the fermentation of materials by fermenting bacteria in an environment rich in oxygen. The traditional fermentation process is: liquefied and filtered The material is transported to the fermenter and sterilized at a temperature not higher than 130°C. After inoculation, the air is ventilated to use the multi-stage agitation of the fermenter to mix and ferment the material and air. This fermentation method is widely used in fermentation Industries, such as brewing and other industries. [0003] In the existing fermentation process, air is the main source of oxygen, which is injected into the fermenter through an injector to drive the fermentation liqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/04C12M1/06
CPCC12M29/18C12M27/02C12M29/26
Inventor 寇光智赵洪波丁兆堂高晓彤
Owner RIZHAO JINHE BOYUAN BIOCHEM
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