Investigation of extraction fraction in confined impinging jet reactors for tri-butyl-phosphate extracting butyric acid process

doi:10.1016/j.cjche.2015.12.005

Abstract

Abstract: The extraction fraction E and overall volumetric mass transfer coefficient kLa of TBP extracting butyric acid process in confined impinging jet reactors (CIJR)with two jetswere investigated. The main variables testedwere the concentration of tri-butyl-phosphate (TBP) and butyric acid, the impinging velocity V, the impinging velocity ratio of two phases V_org/V_aq, the nozzle inner diameter di and the distance L between the jet axes and the top wall of the impinging chamber. The results showed that E and kLa increase with an increase of the impinging velocity V, the concentration of TBP C_org, and the impinging velocity ratio V_org/V_aq.However, E and kLa decreasewith an increase of the inner diameter d_i from 1 to 2 mm, the concentration of butyric acid C_aq from 0.5% (v/v) to 2% (v/v). The factor L ranging from 3 to 11 mm has a negligible effect on E and k_La. A correlation on these variables and kLa was proposed based on the experimental data. These results indicated good mass transfer performance of CIJR in the extraction operation.

Key words: Confined impinging jet reactors (CIJR), Extraction fraction, Mass transfer coefficient, Extraction process

Zhengming Gao, Manting Zhao, Yun Yu, Zhipeng Li, Jing Han. Investigation of extraction fraction in confined impinging jet reactors for tri-butyl-phosphate extracting butyric acid process[J]. , 2016, 24(2): 310-316.

Zhengming Gao, Manting Zhao, Yun Yu, Zhipeng Li, Jing Han. [J]. , 2016, 24(2): 310-316.

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