Method for rectifying serial products of bertbutyl phenol continuously

This invention discloses a continuous rectification system for producing p-tert-butyl phenol product. The continuous rectification system can largely improve the productivity and quality of p-tert-butyl phenol. The continuous rectification system comprises: separating p-tert-butyl phenol intermediate (alkane liquid) by a first rectification column, collecting the front cut fraction in a front cur fraction collection tank, sending heavy phenol into a heavy phenol collection tank via an evaporation kettle, pumping into a second rectification column, rectifying to obtain the product, and sending residual kettle liquid to a kettle liquid tank. The continuous rectification system can realize continuous production of p-tert-butyl phenol product, and has such advantages as low labor intensity, saved energy, and high productivity and quality of p-tert-butyl phenol.