中文摘要：

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 jets were investigated.The main variables tested were the concentration of tri-butyl-phosphate(TBP) and butyric acid,the impinging velocity V,the impinging velocity ratio of two phases Vorg/Vaq,the nozzle inner diameter diand 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 Corg,and the impinging velocity ratio Vorg/Vaq.However,E and kLa decrease with an increase of the inner diameter difrom 1 to 2 mm,the concentration of butyric acid Caqfrom 0.5%(v/v) to2%(v/v).The factor L ranging from 3 to 11 mm has a negligible effect on E and kLa.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.

英文摘要：

The extraction fraction E and overall volumetric mass transfer coefficient kka of TBP extracting butyric acid pro- cess in confined impinging jet reactors （CIJR） with two jets were investigated. The main variables tested were the concentration of tri-butyl-phosphate （TBP） and butyric acid, the impinging velocity V, the impinging velocityratio of two phases Vorg/Vaq, 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 ofTBP Corg, and the impinging velocity ratio Vor/Vaq. However, E and kta decrease with an increase of the inner diameter d1 from 1 to 2 mm, the concentration of butyric acid Caq 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 kLa. A correlation on these variables and kLa was proposed based on the experimental data. These results indicated good mass transfer oerformance of CIJR in the extraction operation.