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Chlorohydrination of alyl chloride to dichloropropanol in a microchemical system / Jisong Zhang in Industrial & engineering chemistry research, Vol. 51 N° 45 (Novembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 45 (Novembre 2012) . - pp. 14685-14691 Titre : Chlorohydrination of alyl chloride to dichloropropanol in a microchemical system Type de document : texte imprimé Auteurs : Jisong Zhang, Auteur ; Jing Tan, Auteur ; Kai Wang, Auteur Année de publication : 2013 Article en page(s) : pp. 14685-14691 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Microchemical  system Résumé : A microchemical system, including two micromixers and a delay loop, is specially designed to carry out the chlorohydrination of allyl chloride with chlorine in water. Chlorine is dissolved in water in the first micromixer and then reacts with allyl chloride to produce dichloropropanol in the second micromixer. The reaction can be accomplished in the delay loop with a residence time less than 10 s and the selectivity higher than 98%. A multistage strategy which connects several microchemical units in series has been developed and demonstrated. The dichloropropanol concentration higher than 6 wt % with the selectivity higher than 96% can be successfully reached using this strategy. The results show that low temperature and high pressure could greatly improve the microreaction performance. In contrast to the conventional reaction process, the microreaction process has the advantages for higher yield, higher dichloropropanol concentration, less water waste, and lower energy consumption. Moreover, the new process could make the reaction process employing chlorine more controllable and safe. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301816k [article] Chlorohydrination of alyl chloride to dichloropropanol in a microchemical system [texte imprimé] / Jisong Zhang, Auteur ; Jing Tan, Auteur ; Kai Wang, Auteur . - 2013 . - pp. 14685-14691. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 45 (Novembre 2012) . - pp. 14685-14691 Mots-clés : Microchemical  system Résumé : A microchemical system, including two micromixers and a delay loop, is specially designed to carry out the chlorohydrination of allyl chloride with chlorine in water. Chlorine is dissolved in water in the first micromixer and then reacts with allyl chloride to produce dichloropropanol in the second micromixer. The reaction can be accomplished in the delay loop with a residence time less than 10 s and the selectivity higher than 98%. A multistage strategy which connects several microchemical units in series has been developed and demonstrated. The dichloropropanol concentration higher than 6 wt % with the selectivity higher than 96% can be successfully reached using this strategy. The results show that low temperature and high pressure could greatly improve the microreaction performance. In contrast to the conventional reaction process, the microreaction process has the advantages for higher yield, higher dichloropropanol concentration, less water waste, and lower energy consumption. Moreover, the new process could make the reaction process employing chlorine more controllable and safe. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301816k