Abstract:

The problem of high pressure drop and low heat exchange efficiency of heater exchanger when processing Suizhong 36-1 oil is analyzed by element composition, FT-IR, and toluene dissolution test. Combined with the knowledge of crude oil production process and the additives used, the material with cage-like structures caused by polyacrylamide is found to be the reason for heater exchanger blockage. An online clean method, in which the No.1 side cut of atmosphere distillation tower is pumped into the inlet pipeline of crude, is proposed. The commercial application proves that the suggested method is effective and feasible, and has both cost efficiency and energy saving effect.

Key words: heat exchanger, blockage, polyacrylamide, Suizhong 36-1 crude, oline cleaning