Extension of the simultaneous-solution and inside-outside algorithms to distillation with chemical reactions
The equations describing the steady state operation of distillation towers with chemical reactions were solved by two algorithms: (1) simultaneous solution after linearization; and (2) the inside-outside method, a tearing algorithm. The two algorithms were compared using a 13 tray ethyl acetate prod...
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Published in | Computers & chemical engineering Vol. 15; no. 5; pp. 337 - 348 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
01.05.1991
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | The equations describing the steady state operation of distillation towers with chemical reactions were solved by two algorithms: (1) simultaneous solution after linearization; and (2) the inside-outside method, a tearing algorithm. The two algorithms were compared using a 13 tray ethyl acetate producing column.
The inside-outside algorithm converged to the solution faster than the simultaneous-solution algorithm. The robustness of the two methods was similar, as measured by the size of the domain within which the initialized variables had to lie for convergence to take place. The temperature and concentration column profiles generated by the two methods were the same since identical thermodynamic and kinetic functions were used. The predicted column profiles matched available experimental data within 15%. |
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ISSN: | 0098-1354 1873-4375 |
DOI: | 10.1016/0098-1354(91)80007-I |