The new process consists of extractive distillation section, degassing section, distillation section and solventrecovery section.
新工艺包括萃取蒸馏区、脱气区、蒸馏区和溶剂回收区。
2
The advances of production process are mainly applications of two stage filtration, full filtrate circulation, filter aids, membrane solventrecovery, dewaxing at room temperature, etc.
工艺进展主要是两段过滤、全滤液循环、助滤剂应用、渗透膜溶剂回收、室温脱蜡等。
3
The recovery and reuse of waste solvent from the loading process of metallocene catalyst were studied.