模拟常减压蒸馏装置的物性计算方法和模型结构

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英文篇名：PROPERTY CALCULATION METHOD AND MODEL STRUCTURE FOR CRUDE DISTILLATION UNIT SIMULATION 作者：郑文刚 英文作者：Zheng Wengang;SINOPEC Refining Business Department; 关键词：常减压蒸馏 ; 流程模拟 ; 物性计算方法 ; Maxwell-Bonnell ; 序贯模块法 ; 联立方程法 ; 减压深拔 英文关键词：CDU;;process simulation;;property calculation method;;Maxwell-Bonnell;;sequential module;;Equation-Oriented model;;reconciliation;;vacuum deep-cut 中文刊名：SYLH 英文刊名：Petroleum Processing and Petrochemicals 机构：中国石油化工股份有限公司炼油事业部; 出版日期：2018-07-12 出版单位：石油炼制与化工 年：2018 期：v.49 语种：中文; 页：SYLH201807040 页数：7 CN：07 ISSN：11-3399/TQ 分类号：103-109

摘要

不同物性计算方法对常减压蒸馏装置的模拟,尤其对减压塔模拟的准确性影响较大。实践中常遇到模拟计算的减压渣油流量值低于现场实际数据的情况。采用Aspen Plus软件,结合某炼油厂常减压蒸馏装置的标定数据,建立了联立方程法(EO)模型。在数据整定(Reconciliation)模式下,通过选用不同的物性计算方法和建立特殊的减压蒸馏装置模型结构,给出了在Aspen Plus软件中模拟常减压蒸馏装置误差最小的物性计算方法,并从理论上解释了不同物性计算方法对常减压蒸馏装置模拟计算结果的影响。
        Property calculation method has great effect on the accuracy of the CDU simulation results,especially for the vacuum column.It is often observed that the simulated flow rate of vacuum residue is lower than the test-run data.This paper introduces a relatively more convinced methodology to simulate CDU using Aspen Plus.Based on a set of CDU test-run data,an Equation-Oriented model is built and solved in reconciliation mode on the Aspen Plus V10 Platform.Comparing the different results among the different property methods,the most accurate property method for CDU is presented.Finally the influence of different property methods on the analog computation results of CDU is explained theoretically.

引文

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