A process in which the selective hydrogenation of butadiene in FCC C4 + fraction and the distillation separation of the fraction take place concurrently to produce butylene.
催化裂化C4 +馏分中的丁二烯选择性加氢和该馏分蒸馏分离同时进行以生产丁烯的一种过程。
2
The quality fraction of the water of each production processing link of the petrochemical profession crude oil of our country is measured mainly to rely on original distillation method.
我国石油化工行业原油各生产加工环节的水的质量分数计量主要是靠原始的蒸馏化验方法来完成。
3
The separating preparation process of epigallocatechin gallate includes HPLC separation of tea polyphenol, fraction interception, membrane distillation and concentration, etc.