Sulfonation of 1,4-diaminoanthraquinone leuco by chlorosulfonic acid:Kinetics and process intensification  

作　　者：Bing Liu Yingjiao Li Moses Arowo Guangwen Chu Yong Luo Liangliang Zhang Haikui Zou Baochang Sun 

机构地区：[1]State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China [2]Research Center of the Ministry of Education for High Gravity Engineering and Technology,Beijing University of Chemical Technology,Beijing 100029,China [3]Department of Chemical&Process Engineering,Moi University,Eldoret 3900-30100,Kenya

出　　处：《Chinese Journal of Chemical Engineering》2023年第6期163-169,共7页中国化学工程学报（英文版）

基　　金：financially supported by the National Key Research and Development Program of China(2016YFB0301500);the National Natural Science Foundation of China(21878009)。

摘　　要：The work herein employed a rotating packed bed(RPB)to intensify the sulfonation process of 1,4-diaminoanthraquinone leuco(DL)in an attempt to improve the yield of the product 1,4-diaminoanthra quinone-2-sulfonic acid(DSA).First,the effects of operating conditions in a stirred tank reactor(STR),including stirring speed,chlorosulfonic acid/DL molar ratio(η),solvent/DL mass ratio(ζ),reaction temperature and dropping speed of chlorosulfonic acid,on the yield of DSA were investigated.The yield of DSA can reach 87.34%under the optimal operating conditions:stirring speed of 500 r·min^(-1),ηof 4.5,ζof 7,reaction temperature of 150℃,dropping speed of 0.61 ml·min^(-1).In addition,the kinetics of the sulfonation process via the shrinking core model revealed that the reaction is controlled by diffusion via a product layer under the reaction temperature of 140℃.Furthermore,the RPB was employed to intensify the mass transfer between liquid and solid phases during the sulfonation reaction process.The results showed that the DSA yield of 92.69%obtained by RPB was 5.35%higher than that by STR,indicating that RPB can significantly intensify the mass transfer in the liquid-solid phase sulfonation reaction process.

关 键 词：SULFONATION 1 4-Diaminoanthraquinone-2-sulfonic acid KINETICS Rotating packed bed(RPB) Chlorosulfonic acid 

分 类 号：TQ244.63[化学工程—有机化工]