关键词: 聚?-烯烃合成油, BF3 络合物, 分离, 回收

Abstract: This paper reviewed several methods of separating and recovering BF3 complexes，including adsorption，extraction，adsorption，subsidence and cracking. SiO2 and metallofluoride can be easily produced in adsorption method，which suited to small-scale applications. In extraction method，the cheaper and less poisonous alcohols are superior to hydrofluorocarbons as the extraction reagents. Highly corrosive acids can be generated in the adsorption method；therefore，this method has been phased out. Subsidence method consumes large amounts of energy and is appropriate to small-scale applications. Four technologies of the cracking method were introduced in more detail in this paper，including flash-evaporation，flash-complexing ，distillation-phase separation and cracking-gas/liquid separation technology. The designed technology combining vacuum distillation with BF3 complexing was able to achieve high cracking rate，high BF3 separating and recovery rate.

Key words: PAO, BF3 complex, separation, recovery