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A scale-up method combining semi-theoretical and numerical simulation for self-priming reactor

A numerical simulation and reactor technology, applied in the fields of instrumentation, electrical digital data processing, special data processing applications, etc., can solve problems such as less research on self-priming reactor amplification

Inactive Publication Date: 2017-08-01
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are many related studies on the scale-up of stirred bioreactors at home and abroad, but there are few studies on the scale-up of self-priming reactors.
Reactors of different scales To ensure kinetic and volume similarity, suitable scaling dimensionless constants should be kept equal, however, this is difficult to achieve due to the complexity of the flow in the system, so new methods for reactor scale-up are proposed is very necessary

Method used

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  • A scale-up method combining semi-theoretical and numerical simulation for self-priming reactor
  • A scale-up method combining semi-theoretical and numerical simulation for self-priming reactor
  • A scale-up method combining semi-theoretical and numerical simulation for self-priming reactor

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Effect test

Embodiment 1

[0096] The method as described in the summary of the invention was adopted and applied to a 50L high-efficiency self-priming reactor for verification. The specific device structure is as follows figure 1 As shown, it includes self-priming reactor tank, baffle, self-priming rotor, stator, air flow meter, motor; the tank is cylindrical, with a hollow shaft of suction pipe in the middle, and the stator is a gas distributor with 12 channels , the suction rotor is a six-impeller rotor with six holes. The tank body is a cylindrical stainless steel tank with a diameter of 0.35m and a height of 0.55m, with a hollow shaft in the middle as a suction channel, a gas-liquid dispersion stator with 12 flow channels at the bottom, and a six-impeller rotor with a diameter of 0.076m. , the height is 0.012m, and the single opening area of ​​the impeller is 1.2×10 -4 m 2 , the inner diameter of the hollow shaft is 0.01m.

[0097] The parameters of the 50L self-priming reactor are shown in the...

Embodiment 2

[0101] The method as described in the summary of the invention was adopted and applied to a 300L high-efficiency self-priming reactor for verification. The 300L self-priming reactor includes a transparent plexiglass tank, baffles, self-priming rotor, stator, air flow meter, and motor; the tank is cylindrical with a hollow shaft with a suction pipe in the middle, such as Figure 2 to Figure 3 As shown, the stator is a gas distributor with 12 channels, and the suction rotor is a six-impeller rotor with six holes. The diameter of the tank is 0.7m and the height of the transparent plexiglass tank is 1m. There is a hollow shaft in the middle as a suction channel. The bottom is equipped with a gas-liquid dispersion stator with 12 flow channels. The impeller is a six-impeller rotor with a diameter of 0.11m. The height is 0.014m, and the single opening area of ​​the impeller is 2.35×10 -4 m 2 , the inner diameter of the hollow shaft is 0.024m.

[0102] The parameters of the 300L se...

Embodiment 3

[0107] The method as described in the summary of the invention was adopted and applied to a 3000L high-efficiency self-priming reactor for verification. 3000L self-priming reactor includes transparent plexiglass tank, baffle, self-priming rotor, stator, air flow meter, motor; the tank is cylindrical, with a hollow shaft in the middle of the suction pipe, and the stator is the gas distribution of 16 channels The suction rotor is a six-impeller rotor with six holes. The diameter of the tank is 1m and the height of the transparent plexiglass tank is 3m. There is a hollow shaft in the middle as a suction channel. The bottom is equipped with a gas-liquid dispersion stator with 16 flow channels. The impeller is a six-impeller rotor, with a diameter of 0.18m and a height of 0.18m. is 0.02m, and the single opening area of ​​the impeller is 6.56×10 -4 m 2 , the inner diameter of the hollow shaft is 0.032m.

[0108] The parameters of the 3000L self-priming reactor are shown in the fo...

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Abstract

The invention discloses a semi-theory and numerical simulation combined self-priming reactor amplification method. The amplification method is applied to industrial amplification by obtaining a suction rate prediction model by a theoretical relational expression by aiming at amplification of a self-priming reactor, then restraining a rotor, the tank size and the like during reactor amplification by combining other performance parameters of the self-priming reactor, and verifying the parameters of the amplified reactor by CFD (computational fluid dynamics) simulation. The amplification method includes the steps of firstly, according to an amplification purpose, amplifying a tank of the self-priming reactor generally by a geometric similarity principle; secondly, designing the self-priming rotor of the self-priming reactor according to the suction rate prediction model; thirdly, constructing a three-dimensional model for CFD simulation; fourthly, predicating; fifthly, comparing a simulation prediction value with a computed value and terminating amplification. The self-priming reactor is a reactor with the volume ranging from 50L to 100m<3>.

Description

technical field [0001] The invention relates to an amplification method of a self-priming reactor, and more particularly to an amplification method combining semi-theoretical and numerical simulation of a self-priming reactor. Background technique [0002] Self-priming reactor is a kind of reactor that does not need gas conveying machinery and can suck external gas for gas-liquid contact by itself. It relies on a specially designed hollow turbine agitator, which can continuously absorb external gas while mixing materials. gas to achieve the purpose of gas-liquid reaction. Self-priming reactors occupy a particularly important position in multiphase flow reactors, which are especially suitable for high pressure, corrosive and toxic reaction gases. [0003] The multiphase flow system in the reactor is a complex system. As a traditional multiphase flow reactor, the optimization and scale-up of the self-priming reactor has been a difficult problem for a long time. In the reacto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 洪厚胜张志强颜旭顾承真
Owner NANJING TECH UNIV