申请人:SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
公开号:US10294179B2
公开(公告)日:2019-05-21
Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein:
a) the concentration of the chlorinated C3-6 alkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated C3-6 alkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or
b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed back into the reaction mixture provided in the principal alkylation zone; and/or
c) the reaction mixture present in the principal alkylation zone and extracted from the principal alkylation zone additionally comprises a catalyst, and the reaction mixture extracted from the principal alkylation zone is subjected to an aqueous treatment step in which the reaction mixture is contacted with an aqueous medium in an aqueous treatment zone, a biphasic mixture is formed and an organic phase comprising catalyst is extracted from the biphasic mixture.
公开了一种生产氯化 C3-6 烷烃的工艺,包括在主烷基化区提供由烯和四氯化碳组成的反应混合物,以在反应混合物中生产氯化 C3-6 烷烃,以及从主烷基化区提取部分反应混合物,其中:
a) 主烷基化区反应混合物中氯化 C3-6 烷烃的浓度保持在一定水平,当主烷基化区连续运行时,从烷基化区提取的反应混合物中氯化 C3-6 烷烃与四氯化碳的摩尔比不超过 95:5;和/或
b) 从主烷基化区提取的反应混合物还包括烯,该反应混合物进行脱烷基化步骤,其中从反应混合物中提取至少约 50%或更多重量的烯,并将至少约 50%提取的烯送回主烷基化区提供的反应混合物中;和/或
c) 存在于主烷基化区并从主烷基化区萃取的反应混合物还包括催化剂,从主烷基化区萃取的反应混合物经过水处理步骤,其中反应混合物在水处理区与水介质接触,形成双相混合物,并从双相混合物中萃取包含催化剂的有机相。