A kinetic characteristics algorithm of furnace combustion based on steady state is established , and a dynamic mathematical model of 450t / h cfb boiler made in china is developed in this paper . the model not only integrates the update theories and results of previous studies on the partial aspects , but also considers the main process in cfb boiler including flow , coal distribution , devolatilization of coal , char combustion , heat transfer and so on , and further improve the existing model of combustion kinetic characteristics 本文以國產(chǎn)450t h循環(huán)流化床電站鍋爐為研究對象,在前人對循環(huán)流化床內(nèi)部各種單獨(dú)過程及模型化研究成果的基礎(chǔ)上,深入考慮了燃煤粒徑分布、流動(dòng)、揮發(fā)分釋放和燃燒、焦炭燃燒、傳熱等循環(huán)流化床內(nèi)部進(jìn)行的主要過程,進(jìn)一步完善了爐內(nèi)燃燒動(dòng)態(tài)特性的數(shù)學(xué)模型。