Abstract:

In crude benzol recovery unit，there existed such problems as high consumption in steam，cooling water and gas，as well as low yield of crude benzol.Through technical upgrading，the steam consumption decreased from 5.5 t/h to 4.35 t/h，with daily reduction of 27.6 t in total.The cooling water consumption fell from 1 250 m3/h to 620 m3/h，and gas consumption from 1 120 m3/h to 820 m3/h.The yield of crude benzol increased from 0.828% to 0.847%.As a result，the technical upgrading helped to lower energy consumption and increase crude benzol yield.