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Air intake system for airlift fermentation tank

An air-lift fermenter and air intake system technology, which is applied in the field of air-lift fermenter air intake system, can solve the problems of large air injection volume and interphase mixing contact difference of the air-lift fermenter, and improve the oxygen supply efficiency. , The effect of saving air intake and cost saving

Inactive Publication Date: 2017-05-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the air-lift fermenter requires a very large amount of air injection, resulting in poor mixing and contact between phases, and provides an air-lift fermenter air intake system

Method used

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  • Air intake system for airlift fermentation tank
  • Air intake system for airlift fermentation tank

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specific Embodiment approach 1

[0014] Specific Embodiment 1: In this embodiment, an air-lift fermenter air intake system includes an air intake device 1, an air inlet 3, an air inlet pipe 4 and an air injection device 2, wherein the air injection device 2 passes through the air inlet pipe 4 and the air inlet 3 Link, the air intake device 1 is connected to the air inlet 3, and the air intake device 1 feeds air into the jet device 2 through the air inlet 3.

specific Embodiment approach 2

[0015] Embodiment 2: This embodiment differs from Embodiment 1 in that the air intake device 1 is a screw air compressor. Others are the same as in the first embodiment.

[0016] Displacement of the screw air compressor described in this embodiment: 9.92m 3 / min, working pressure: 0.8MPa, motor power: 55KW.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that a group of nozzles 5 is provided on the air spray device 2 . Others are the same as those in the first or second embodiment.

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Abstract

The invention provides an air intake system for an airlift fermentation tank, and relates to the air intake system for an airlift fermentation tank, aiming at solving the problem of huge energy waste caused by very large air injection amount for an airlift fermentation tank. The system comprises an air intake device, an air inlet, an air inlet pipe and an air jet device, wherein the air jet device is linked with the air inlet through the air inlet pipe; and the air intake device is used for feeding air into the air jet device through the air inlet. According to the air intake system, bubbles can be finely cut by adopting the air jet device, large bubbles are prevented from being formed due to combination of bubbles, the air-liquid contact area is increased, and the introduced air is maximally dispersed into fermentation broth finally, so that the aims of improving oxygen supply efficiency, reducing air intake quantity, reducing energy consumption and saving cost can be achieved. An airlift fermentation tank adopting the air intake system has the raw material treatment capacity of 30t / h with only five screw-type air compressors, and has the oxygen supply efficiency which is 11 times that of a conventional airlift fermentation tank. The air intake system belongs to the technical field of fermentation tanks.

Description

technical field [0001] The invention relates to an air-lift fermenter air intake system. Background technique [0002] Air-lift fermenter is a new type of bioreactor developed and applied at the end of last century, which is widely used in large-scale production of single-cell protein. Its working principle is to use the air nozzle to spray high-speed air, and the air is dispersed in the fermentation liquid in the form of bubbles. On the ventilated side, the average density of the liquid decreases, and on the non-ventilated side, the liquid density is higher, so that it is different from the aeration. The liquid on the side produces a density difference, thereby forming a circulation of the liquid in the fermenter. [0003] The most important feature of the air-lift fermenter is that it replaces the traditional mechanical agitator with an airflow agitation device, and combines the air-lift principle, so it has the following advantages: compared with the mechanical agitation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/04
CPCC12M29/06
Inventor 杨谦刘冰南
Owner HARBIN INST OF TECH
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