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Li ZH(李佐虎); Mao ZX(毛卓雄); Yang SZ(杨守志); Chen JY(陈家镛)
Source PublicationChinese Journal of Chemical Engineering
Other Abstract<正> The characteristics of a staged bubble column can be described by a multi-stage backmixing model,provided: (1) Each stage can be considered as a perfect mixing reactor,and (2) The backmixing coeffi-cients do not vary with time and reactant concentrations.Experimental results indicate that the first conditionis approached under certain conditions,while the second assumption is correct.Studies were made using steady state chemical tracer method to determine the backmixing coefficientsof each plate between stages.The fluid flow through the holes of perforatcd plates is a stochastic process.From the statistical point,the experimental data could be correlated by semicmpirical equation developed.This equation can also be used to correlate the data reported by Nishiwaki for bubble column with plateshaving high percentage of opening area and large size holes between stages.Continuous oxidation of unsaturated sulfur compounds (mainly in the form of thiosulfatc and also somein polythionate form) in nickel ammonium carbonate solution were carried out in bubble columns with heightof 3400mm and diameters of 36 mm and 100mm respectively.The oxidation has to be taken in a multistagebubble column for high degree of oxidation.The axial concentration of unsaturated sulfur compoundsalong a multi-stage bubble column can be calculated from the backmixing model and the kinetic equationof oxidation.Results of calculation agree with the data taken along the column height.Equation was alsodeveloped to calculate the optimum temperatures of oxidation which agree favorably with the experimentalresults.
Keyword工学:6778 化学:3188 立氏:3001 封山:2852 口味:2313 概论:2263 反应:2169 八一:2084 论文集:2053 工业:1728
Document Type期刊论文
Recommended Citation
GB/T 7714
Li ZH,Mao ZX,Yang SZ,et al. LIQUID AXIAL BACKMIXING IN MULTISTAGE BUBBLE COLUMN[J]. Chinese Journal of Chemical Engineering,1982(00):108-123.
APA 李佐虎,毛卓雄,杨守志,&陈家镛.(1982).LIQUID AXIAL BACKMIXING IN MULTISTAGE BUBBLE COLUMN.Chinese Journal of Chemical Engineering(00),108-123.
MLA 李佐虎,et al."LIQUID AXIAL BACKMIXING IN MULTISTAGE BUBBLE COLUMN".Chinese Journal of Chemical Engineering .00(1982):108-123.
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