A improved process of p-amino-N,N-dimethylaniline applied caustic soda solution as materials was introduced.

阐述了采用(苛性钠溶)代替产基-N,N-二甲基胺的方法。

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

用苛性汽油进行预洗时易产大量废，为彻底消除废提出了用固体预处理代替苛性预洗的方法。