Nonlinear control of fouling in polyethylene reactors
Fouling formation in reactor vessels poses a serious threat to the safe operation of the industrial low-density polyethylene (LDPE) polymerization. Fouling also degrades the polymer quality and causes productivity loss to some extent. In this work, neural Wiener model predictive control (NWMPC) is i...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Chemical Society
2022
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| Subjects: | |
| Online Access: | http://eprints.utm.my/100566/1/AhmadIlyasRushdan2022_NonlinearControlofFoulinginPolyethyleneReactors.pdf |
| _version_ | 1796866905379700736 |
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| author | Rohman, Fakhrony Sholahudin Othman, Mohd. Roslee Muhammad, Dinie Azmi, Ashraf Idris, Iylia Rushdan, Ahmad Ilyas Elkhatif, Samah Elsayed Murat, Muhammad Nazri |
| author_facet | Rohman, Fakhrony Sholahudin Othman, Mohd. Roslee Muhammad, Dinie Azmi, Ashraf Idris, Iylia Rushdan, Ahmad Ilyas Elkhatif, Samah Elsayed Murat, Muhammad Nazri |
| author_sort | Rohman, Fakhrony Sholahudin |
| collection | ePrints |
| description | Fouling formation in reactor vessels poses a serious threat to the safe operation of the industrial low-density polyethylene (LDPE) polymerization. Fouling also degrades the polymer quality and causes productivity loss to some extent. In this work, neural Wiener model predictive control (NWMPC) is introduced to address the fouling concern. In addition, a soft sensor model is used to activate the fouling-defouling (F-D) mechanism when the fouling surpasses the thickness limit to prevent vessel overheating. NWMPC is proven to be fast, stable, and robust under various control scenarios. The use of a soft sensor model in conjunction with NWMPC enables the online monitoring and controlling of the F-D processes. When comparison is made with a state space (SSMPC) utilizing only the linear block, NWMPC is found to be able to control the LDPE grade with quicker grade transition and lower resource consumption. |
| first_indexed | 2024-03-05T21:19:10Z |
| format | Article |
| id | utm.eprints-100566 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T21:19:10Z |
| publishDate | 2022 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | utm.eprints-1005662023-04-17T07:05:16Z http://eprints.utm.my/100566/ Nonlinear control of fouling in polyethylene reactors Rohman, Fakhrony Sholahudin Othman, Mohd. Roslee Muhammad, Dinie Azmi, Ashraf Idris, Iylia Rushdan, Ahmad Ilyas Elkhatif, Samah Elsayed Murat, Muhammad Nazri TP Chemical technology Fouling formation in reactor vessels poses a serious threat to the safe operation of the industrial low-density polyethylene (LDPE) polymerization. Fouling also degrades the polymer quality and causes productivity loss to some extent. In this work, neural Wiener model predictive control (NWMPC) is introduced to address the fouling concern. In addition, a soft sensor model is used to activate the fouling-defouling (F-D) mechanism when the fouling surpasses the thickness limit to prevent vessel overheating. NWMPC is proven to be fast, stable, and robust under various control scenarios. The use of a soft sensor model in conjunction with NWMPC enables the online monitoring and controlling of the F-D processes. When comparison is made with a state space (SSMPC) utilizing only the linear block, NWMPC is found to be able to control the LDPE grade with quicker grade transition and lower resource consumption. American Chemical Society 2022 Article PeerReviewed application/pdf en http://eprints.utm.my/100566/1/AhmadIlyasRushdan2022_NonlinearControlofFoulinginPolyethyleneReactors.pdf Rohman, Fakhrony Sholahudin and Othman, Mohd. Roslee and Muhammad, Dinie and Azmi, Ashraf and Idris, Iylia and Rushdan, Ahmad Ilyas and Elkhatif, Samah Elsayed and Murat, Muhammad Nazri (2022) Nonlinear control of fouling in polyethylene reactors. ACS Omega, 7 (44). pp. 39648-39661. ISSN 2470-1343 http://dx.doi.org/10.1021/acsomega.2c03078 DOI : 10.1021/acsomega.2c03078 |
| spellingShingle | TP Chemical technology Rohman, Fakhrony Sholahudin Othman, Mohd. Roslee Muhammad, Dinie Azmi, Ashraf Idris, Iylia Rushdan, Ahmad Ilyas Elkhatif, Samah Elsayed Murat, Muhammad Nazri Nonlinear control of fouling in polyethylene reactors |
| title | Nonlinear control of fouling in polyethylene reactors |
| title_full | Nonlinear control of fouling in polyethylene reactors |
| title_fullStr | Nonlinear control of fouling in polyethylene reactors |
| title_full_unstemmed | Nonlinear control of fouling in polyethylene reactors |
| title_short | Nonlinear control of fouling in polyethylene reactors |
| title_sort | nonlinear control of fouling in polyethylene reactors |
| topic | TP Chemical technology |
| url | http://eprints.utm.my/100566/1/AhmadIlyasRushdan2022_NonlinearControlofFoulinginPolyethyleneReactors.pdf |
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