【摘要】 根据进料实沸点曲线数据将原油分成20个虚拟组分，利用改进松驰法对原油常压塔进行严格计算，得到最佳松驰系数为1．5，其收敛性好，计算精度高，塔板温度的计算误差最大为3．4％，汽液负荷误差最大为9．76％，为常压塔的优化控制及模拟奠定了基础。更多还原

【Abstract】 The crud oil is divided int0 20 pesudo-components based on the TBP data of feed. The parameters of atmospheric distillation towr (ADT) is calculated with improved relaxation methal. The convergence and accuracy of the method is satisfactory and the optimum relaxation coefficient is 1.5. The relative error of operating temperature for ADT is less than 3.4% and that of vapour-liquid load is less than 9.76%. the method provides the calculation basis for the optimum control and the simulation of ADT.更多还原