Journal of South China University of Technology(Natural Science) >

2015 , Vol. 43 >Issue 6: 9 - 14

DOI: https://doi.org/10.3969/j.issn.1000-565X.2015.06.002

Chemistry & Chemical Engineering

Distribution Regularity of Residence Time in Flatted Reactor Radiated by Multi-Frequency Ultrasonic

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  • School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
邹华生(1957-)，男，博士，教授，主要从事清洁能源与环境工程研究．

Received date: 2014-07-08

  Revised date: 2015-03-02

  Online published: 2015-05-04

Supported by

Supported by the Science and Technology Project of Guangdong Province(2013B020800004)

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Abstract

Flatted ultrasonic reactor is the core component of the continuous biodiesel production equipment． As a reflection of the flow pattern，the back-mixing degree and the reaction effect，the residence time distribution (RTD) is significant to the design，manipulation and control of flatted ultrasonic reactors． In this paper，the RTD curves were obtained through measuring the outlet KOH concentration of the flatted multi-frequency ultrasonic reac-tor with a pHB-3 type pH tester in real time，with KOH solution as the tracer in the pulse method and with purified water as the main fluid． Then，the contributions of ultrasonic power and fluid flow to the flow condition and non-ideality of the fluid in the reactor were investigated，and a fitting of the experimental data was performed by using a continuous-flow stirred tank reactor (CSTR) model． The results show that，under the action of 200W ultrasonic，the theoretical number of series kettles is respectively 6. 06 and 6. 76 when the flow rate is respectively 20 and 30L/h; and that，at a high flow rate，the simulation effect becomes better and the flow pattern most likely tends to plug flow．

Key words： flatted ultrasonic reactor; residence time distribution; power; flow rate; numerical simulation

Cite this article

Zou Hua-sheng Lü Xue-ying Li Xue-feng . Distribution Regularity of Residence Time in Flatted Reactor Radiated by Multi-Frequency Ultrasonic[J]. Journal of South China University of Technology(Natural Science), 2015 , 43(6) : 9 -14 . DOI: 10.3969/j.issn.1000-565X.2015.06.002

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