spent caustic

• 废碱,废烧碱

spent caustic的用法和样例：

例句

1. As caustic solution prewashing of FCC gasoline discharges lots of lye, it is nec essary to improve the process.
   用苛性碱液对汽油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。