By dynamic simulation for a deethanizing column, the influences of energy bal-ance equations on dynamic models were investigated systematically and a new dynamic mathematical model for rectifying col-umn was given.

• 本文通过对某脱乙烷精馏塔的动态仿真；系统地研究了能量平衡方程对动态模型的影响；并给出了一个新的精馏塔动态数学模型.