Technologies for sulfonation including using sulfur trioxide as sulfonating agent and baking process and the sulfonation equipment such as tubular sulfonator as well are briefed.

• 简要介绍了三氧化硫磺化和烘焙磺化工艺及管式磺化反应器,举例说明了气体三氧化硫连续生产十二烷基苯磺酸和烘焙磺化法生产对氨基苯磺酸钠的工艺过程。