Process for separating hydrocarbons with double bounds (styrene, butadiene, isoprene etc) from hydrocarbon mixtures containing them by extractive distillation with an amine with more than one amino-group (e.g. N-aminoethylpiperazine) as solvent.
N-aminoethylpiperazine can also be used as solvent in the extractive distallation of close-boiling liquids or as polymerization inhibitor for styrene.
以具有一个以上
氨基的胺(如
N-氨乙基哌嗪)为溶剂,通过萃取蒸馏从含有双界碳氢化合物(
苯乙烯、
丁二烯、
异戊二烯等)的碳氢化合物混合物中分离双界碳氢化合物的工艺。
N-
氨基乙基哌嗪还可用作沸点较低液体的萃取蒸馏溶剂或
苯乙烯的聚合
抑制剂。