Abstract:

The reaction principle and process flow of distillate scrubbing dephenolization of tar processing are described. The problem of low phenol content in neutral phenolate is analyzed. The process indexes, such as quality of scrubbing raw material, diluted soda solution concentration, reaction temperature, separation interface etc. are optimized and adjusted. The scrubbing quality after improvement takes a favorable turn. The phenol content in neutral phenolate is raised from 16.39% to 21.79%; the average phenol content in naphthalene oil for dephenolization is reduced by 0.06%; the sale price is increased by approximate 510 RMB yuan/t.