The working principles of the neutralization corrosion inhibitor BZH - 1 and its application results were stated.

Simulated experiments showed that the corrosion inhibitory efficiency of liquid part was above 99% and the efficiency of dew point area in the early part of distillation was over 98%.

The main anticorrosion measures are to intensively desalinate crude oil and inject neutralizer and corrosion inhibitor through the top of the column.