| 大范围工况变化下联塔的严格机理模拟研究 |
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| 引用本文： | 张正江,邵之江,陈曦,钱积新.大范围工况变化下联塔的严格机理模拟研究[J].化工自动化及仪表,2006,33(6):7-10. |
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| 作者姓名： | 张正江 邵之江 陈曦 钱积新 |
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| 作者单位： | 浙江大学,先进控制技术研究所,工业控制技术国家重点实验室,杭州,310027 |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | 建立基于严格机理的乙烯生产过程联塔系统开放式模型,采用大规模系统优化方法和自动微分方法,对此联塔系统进行大范围工况变化下的模拟.求解结果和收敛效率与Aspen Plus进行了对比.在初值相同、标度相同、建模和求解方式一致的情况下,本文联立求解方法的结果与Aspen Plus的EO模式的求解结果一致;对于进料工况大范围变化的情形,本文的联立求解方法收敛性明显优于Aspen Plus.采用大规模优化计算方法和稀疏自动微分方法对于提高求解效率、降低初值依赖性具有明显的效果.
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| 关 键 词： | 联塔模拟 开放式联立方程 大规模优化算法 自动微分法 收敛性 |
| 文章编号： | 1000-3932（2006）06-0007-04 |
| 收稿时间： | 10 18 2006 12:00AM |
| 修稿时间： | 2006-10-18 |
Research on Rigorous Mechanism Modeling for Distillation Column Series under Wide Variation of Feed Condition |
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| ZHANG Zheng-jiang,SHAO Zhi-jiang,CHEN Xi,QIAN Ji-xin.Research on Rigorous Mechanism Modeling for Distillation Column Series under Wide Variation of Feed Condition[J].Control and Instruments In Chemical Industry,2006,33(6):7-10. |
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| Authors: | ZHANG Zheng-jiang SHAO Zhi-jiang CHEN Xi QIAN Ji-xin |
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| Affiliation: | National Laboratory of Industrial Control Technology, Institute of Industrial Control Technology, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Depropanizer and debutanizer in the ethylene separation process are modeled with simultaneous equations manner,which is based on rigorous calculation of thermodynamic properties.Large-scale optimization algorithm and automatic differentiation technique are exploited to solve the model under wide variation of feed conditions.Simulations are carried out in parallel with Aspen Plus Equation Oriented(EO) mode,provided with the same initial values,scaling factors and convergence criterions.It is validated that the simulation results are very much close to each other under nominal feed condition.However under wide variation of feed conditions,the proposed simultaneous method is much better.It is shown that convergence and efficiency could be improved significantly by large-scale optimization algorithm and sparse automatic differentiation technique. |
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| Keywords: | simulation of distillation column series open simultaneous equations large-scale optimization algorithm automatic differentiation technique convergence |
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