As caustic solution prewashing of FCC gasoline discharges lots of lye, it is nec essary to improve the process.

用苛性碱液对汽进行预碱洗时易产生大量废碱液，为彻底消除废液提出了用固体碱预处理代替苛性碱液预碱洗的方法。

A rapid infrared spectrophotometric metrod for determining furfural content in the raffinate of fur fural extraction of FCC light cycle oil is established.

本文建立了红外光谱法快速测定催糠醛抽余相中糠醛含量的分析方法。