中国化学工程学报(英文版)
中國化學工程學報(英文版)
중국화학공정학보(영문판)
CHINESE JOURNAL OF CHEMICAL ENGINEERING
2008年
4期
590-598
,共9页
张伟勇%黄德先%王毓栋%王京春
張偉勇%黃德先%王毓棟%王京春
장위용%황덕선%왕육동%왕경춘
delayed coking fumace%adaptive control%state feedback%predictive control%expert control
An adaptive state feedback predictive control(SFPC)scheme and an expert control scheme are presented and applied to the temperature control of a 1 200 kt·a-1 delayed coking fumace,which is the key equipment for the delayed coking process.Adaptive SFPC is used to improve the performance of temperature control in normal operation.A simplified nonlinear model on the basis of first principles of the furnace is developed to obtain a state space model by linearization.Taking advantage of me nonlinear model.an online model adapting method is presented to accommodate the dynamic change of process charactenstics because of tube coking and load changes.To compensate the larRe mverse response of outlet temperature resulting trom the sudden increase ot injected steam of a particular velocity to tubes,a monitoring method and an expert control scheme based on heat balance calcula tion are proposed.Industrial implementation shows the effectiveness and leasibility of the proposed control strategy.
