Dynamics of reactive distillation processes with potential liquid phase splitting based on equilibrium stage models
Dynamics of reactive distillation processes with potential liquid phase splitting based on equilibrium stage models
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DOI：
10.1016/j.compchemeng.2008.08.010
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发表时间：
2009-03
期刊：
影响因子：
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通讯作者：
G. Radulescu;J. Gangadwala;N. Paraschiv;A. Kienle;K. Sundmacher
中科院分区：
文献类型：
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作者：
G. Radulescu;J. Gangadwala;N. Paraschiv;A. Kienle;K. Sundmacher
针对具有潜在相分裂的高度非理想体系，建立了反应精馏塔动态模型。对正丁醇酯化法从废沃茨中回收乙酸进行了动态模拟和非线性动力学分析。测试了两种替代RD柱设计对工艺干扰的开环瞬态响应。一个参数的延续与特征值计算揭示了存在多个稳定状态与稳定和不稳定的分支。这些稳态被发现有完全不同的柱内的原始液相的相分裂行为。对工艺操作进行了总结。
A dynamic reactive distillation (RD) column model is developed for highly non-ideal systems with potential phase splitting. Dynamic simulations and non-linear dynamic analysis are performed for recovery of acetic acid from waste waters by esterification with n-butanol, which is an interesting alternative to non-reactive separation processes. Two alternative RD column designs were tested with respect to their open loop transient responses to process disturbances. One parameter continuation with eigenvalue calculations reveals existence of multiple steady states with stable and unstable branches. These steady states were found to have totally different phase splitting behavior of the original liquid phase inside the column. Conclusions are drawn for process operation.