Abstract: In this paper,the control of aviation kerosene quality in an industrial crude towerhas been considered.Firstly,model structure and variables included in model are determined with process analysis. Secondly,dynamic tests are carried out by use of PRBS and a state space model is identified.Based on this model a IQ optimal control isimplemented.To overcome time-varying disturbance in top pressure of the tower,anadaptive feedforward compensator is designed.In application,the quality control systemhas shown good results:average deviation is reduced to 50%,the quality has been keptwithin a permissible region under many serious disturbances.Thus,the production ofaviation kerosene is increased and a notable economic profit is obtained.Moreover,operating condition is improved and the modern control technique is accepted byoperaters.