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Controllability Evaluation for Reactive Distillation Columns with Multiple Reactive Sections Disproportionating Trichlorosilane to Silane.
- Source :
-
Industrial & Engineering Chemistry Research . 1/24/2018, Vol. 57 Issue 3, p1102-1108. 7p. - Publication Year :
- 2018
-
Abstract
- In our recent work, the arrangement of multiple reactive sections is found to greatly enhance the steady-state performance of reactive distillation columns disproportionating trichlorosilane to silane. In the current research, process dynamics and controllability are studied through in-depth comparative analysis of open-loop and closed-loop behaviors between three reactive distillation columns with, respectively, a single reactive section (RDC-SRS), double reactive sections (RDC-DRS), and triple reactive sections (RDC-TRS). In the regulation path, although the arrangement of double and triple reactive sections reduces slightly the process gains between the bottom product composition and reboiler heat duty in the RDC-DRS and RDC-TRS, it helps to alleviate the coupling between the bottom product composition and reflux flow rate, thereby gaining increases in process controllability as compared with the RDC-SRS. In the disturbance path, the arrangement of double and triple reactive sections results in no intensified sensitivities to the disturbances from feed flow rate and composition. The closed-loop operation tests coincide with the open-loop analysis and demonstrate that the RDC-TRS and RDC-DRS exhibit substantially improved antidisturbance and set-point tracking capabilities as compared with the RDC-SRS. These outcomes highlight evidently the great importance of arranging multiple reactive sections to the dynamics and controllability of reactive distillation columns separating reacting mixtures with unfavorable and complicated reaction kinetics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08885885
- Volume :
- 57
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Industrial & Engineering Chemistry Research
- Publication Type :
- Academic Journal
- Accession number :
- 127705356
- Full Text :
- https://doi.org/10.1021/acs.iecr.7b03666