Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis
Dividing wall column (DWC) provides a good alternative for oleochemical fractionation. However, the internal configuration and multiple input multiple output (MIMO) system of DWC leads to complexity in operation and control. This work aims to analyze the controllability of fractionating oleochemical...
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| Format: | Conference or Workshop Item |
| Language: | English |
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IOP Publishing Ltd
2019
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| Online Access: | http://umpir.ump.edu.my/id/eprint/35833/ http://umpir.ump.edu.my/id/eprint/35833/1/Fractionation%20of%20oleochemical%20fatty%20acid%20using%20vacuum%20dividing%20wall%20column_A%20controllability%20analysis.pdf |
| _version_ | 1848824882126651392 |
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| author | Mohamad Rizza, Othman |
| author_facet | Mohamad Rizza, Othman |
| author_sort | Mohamad Rizza, Othman |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Dividing wall column (DWC) provides a good alternative for oleochemical fractionation. However, the internal configuration and multiple input multiple output (MIMO) system of DWC leads to complexity in operation and control. This work aims to analyze the controllability of fractionating oleochemical fatty acid using vacuum dividing wall column (VDWC). To achieve this, Aspen Plus and Aspen Dynamics were used to develop a rigorous steady state and dynamic model of the column. Five manipulated variables (MVs) were considered namely reflux flowrate (L), distillate flowrate (D), bottom flow rate (B), side-stream flowrate (S) and vapor boilup (V) while controlled variables (CVs) were the product compositions. Pairing of MV and CV to determine the best 3×3 control configuration was performed using relative gain array (RGA) and singular value analysis (SVA). The selected control structure was tested on PID controllers for several regulatory and servo problem. The results of RGA and SVA shows that DSV was the best control configuration. Performance analysis was found to be successful in rejecting the disturbances as well as obtaining good set point tracking. However, distillate and bottom composition shows poor controllability compare to middle composition. |
| first_indexed | 2025-11-15T03:20:05Z |
| format | Conference or Workshop Item |
| id | ump-35833 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:20:05Z |
| publishDate | 2019 |
| publisher | IOP Publishing Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-358332023-05-24T04:11:07Z http://umpir.ump.edu.my/id/eprint/35833/ Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis Mohamad Rizza, Othman QD Chemistry T Technology (General) TP Chemical technology Dividing wall column (DWC) provides a good alternative for oleochemical fractionation. However, the internal configuration and multiple input multiple output (MIMO) system of DWC leads to complexity in operation and control. This work aims to analyze the controllability of fractionating oleochemical fatty acid using vacuum dividing wall column (VDWC). To achieve this, Aspen Plus and Aspen Dynamics were used to develop a rigorous steady state and dynamic model of the column. Five manipulated variables (MVs) were considered namely reflux flowrate (L), distillate flowrate (D), bottom flow rate (B), side-stream flowrate (S) and vapor boilup (V) while controlled variables (CVs) were the product compositions. Pairing of MV and CV to determine the best 3×3 control configuration was performed using relative gain array (RGA) and singular value analysis (SVA). The selected control structure was tested on PID controllers for several regulatory and servo problem. The results of RGA and SVA shows that DSV was the best control configuration. Performance analysis was found to be successful in rejecting the disturbances as well as obtaining good set point tracking. However, distillate and bottom composition shows poor controllability compare to middle composition. IOP Publishing Ltd 2019-12-09 Conference or Workshop Item PeerReviewed pdf en cc_by http://umpir.ump.edu.my/id/eprint/35833/1/Fractionation%20of%20oleochemical%20fatty%20acid%20using%20vacuum%20dividing%20wall%20column_A%20controllability%20analysis.pdf Mohamad Rizza, Othman (2019) Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis. In: IOP Conference Series: Materials Science and Engineering; 1st Process Systems Engineering and Safety Symposium 2019, ProSES 2019 , 4 September 2019 , Kuantan, Pahang, Malaysia. pp. 1-9., 702 (1). ISSN 1757-8981 (Published) https://doi.org/10.1088/1757-899X/702/1/012022 |
| spellingShingle | QD Chemistry T Technology (General) TP Chemical technology Mohamad Rizza, Othman Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis |
| title | Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis |
| title_full | Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis |
| title_fullStr | Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis |
| title_full_unstemmed | Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis |
| title_short | Fractionation of oleochemical fatty acid using vacuum dividing wall column : A controllability analysis |
| title_sort | fractionation of oleochemical fatty acid using vacuum dividing wall column : a controllability analysis |
| topic | QD Chemistry T Technology (General) TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/35833/ http://umpir.ump.edu.my/id/eprint/35833/ http://umpir.ump.edu.my/id/eprint/35833/1/Fractionation%20of%20oleochemical%20fatty%20acid%20using%20vacuum%20dividing%20wall%20column_A%20controllability%20analysis.pdf |