›› 2006, Vol. 6 ›› Issue (2): 247-254.
• 系统与集成 • Previous Articles Next Articles
LI Chun-shan,ZHANG Xiang-ping,ZHANG Suo-jiang,TAN Xin-shun,XIANG Shu-guang
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李春山,张香平,张锁江,谭心舜,项曙光
Abstract: This paper presents a flexible model and a robust algorithm for simulation of multi-stage multi-component separation processes in which multiple feeds, side streams, strippers and/or side heat exchangers are involved. The improved algorithm effectively accelerates the speed of convergence and offers better stability by introducing a damping factor for updating the stripping factor, and also reduces the requirement on the initial estimates by updating the Joacobian matrix directly with the stripping factor and enthalpy. On the other hand, an efficient algorithm was proposed to solve the approximate tri-diagonal matrix (containing the off-band elements) derived from the material balance equations (M equations) and phase equilibrium equations (E equations), the advantages and simplicity of the "inside-out" technique of the Russell are retained. The present algorithm was demonstrated to be effective in simulating complex separation columns with typical case studies.
Key words: separation, distillation, multi-component, simulation, algorithm
摘要: This paper presents a flexible model and a robust algorithm for simulation of multi-stage multi-component separation processes in which multiple feeds, side streams, strippers and/or side heat exchangers are involved. The improved algorithm effectively accelerates the speed of convergence and offers better stability by introducing a damping factor for updating the stripping factor, and also reduces the requirement on the initial estimates by updating the Joacobian matrix directly with the stripping factor and enthalpy. On the other hand, an efficient algorithm was proposed to solve the approximate tri-diagonal matrix (containing the off-band elements) derived from the material balance equations (M equations) and phase equilibrium equations (E equations), the advantages and simplicity of the "inside-out" technique of the Russell are retained. The present algorithm was demonstrated to be effective in simulating complex separation columns with typical case studies.
关键词: separation, distillation, multi-component, simulation, algorithm
LI Chun-shan;ZHANG Xiang-ping;ZHANG Suo-jiang;TAN Xin-shun;XIANG Shu-guang. Simulation of Multi-component Multi-stage Separation Process -An Improved Algorithm and Application[J]. , 2006, 6(2): 247-254.
李春山;张香平;张锁江;谭心舜;项曙光. Simulation of multi-component multi-stage separation process -An improved algorithm and application[J]. , 2006, 6(2): 247-254.
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