Heat exchanger fouling model and preventive maintenance scheduling tool
The crude preheat train (CPT) in a petroleum refinery consists of a set of large heat exchangers which recovers the waste heat from product streams to preheat the crude oil. In these exchangers the overall heat transfer coefficient reduces significantly during operation due to fouling. The rate of f...
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my.utp.eprints.6122017-01-19T08:27:16Z Heat exchanger fouling model and preventive maintenance scheduling tool V.R., Radhakrishnan M., Ramasamy H., Zabiri V., Do Thanh N.M., Tahir M.R., Hamdi H., Mukhtar N.M., Ramli TP Chemical technology The crude preheat train (CPT) in a petroleum refinery consists of a set of large heat exchangers which recovers the waste heat from product streams to preheat the crude oil. In these exchangers the overall heat transfer coefficient reduces significantly during operation due to fouling. The rate of fouling is highly dependent on the properties of the crude blends being processed as well as the operating temperature and flow conditions. The objective of this paper is to develop a predictive model using statistical methods which can a priori predict the rate of the fouling and the decrease in heat transfer efficiency in a heat exchanger. A neural network based fouling model has been developed using historical plant operating data. Root mean square error (RMSE) of the predictions in tube- and shell-side outlet temperatures of 1.83% and 0.93%, respectively, with a correlation coefficient, R2, of 0.98 and correct directional change (CDC) values of more than 92% show that the model is adequately accurate. A case study illustrates the methodology by which the predictive model can be used to develop a preventive maintenance scheduling tool. © 2007 Elsevier Ltd. All rights reserved. 2007 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/612/1/paper.pdf http://www.scopus.com/inward/record.url?eid=2-s2.0-34548061844&partnerID=40&md5=76fd0019a77691173270c65e38591b24 V.R., Radhakrishnan and M., Ramasamy and H., Zabiri and V., Do Thanh and N.M., Tahir and M.R., Hamdi and H., Mukhtar and N.M., Ramli (2007) Heat exchanger fouling model and preventive maintenance scheduling tool. [Citation Index Journal] http://eprints.utp.edu.my/612/ |
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The crude preheat train (CPT) in a petroleum refinery consists of a set of large heat exchangers which recovers the waste heat from product streams to preheat the crude oil. In these exchangers the overall heat transfer coefficient reduces significantly during operation due to fouling. The rate of fouling is highly dependent on the properties of the crude blends being processed as well as the operating temperature and flow conditions. The objective of this paper is to develop a predictive model using statistical methods which can a priori predict the rate of the fouling and the decrease in heat transfer efficiency in a heat exchanger. A neural network based fouling model has been developed using historical plant operating data. Root mean square error (RMSE) of the predictions in tube- and shell-side outlet temperatures of 1.83% and 0.93%, respectively, with a correlation coefficient, R2, of 0.98 and correct directional change (CDC) values of more than 92% show that the model is adequately accurate. A case study illustrates the methodology by which the predictive model can be used to develop a preventive maintenance scheduling tool. © 2007 Elsevier Ltd. All rights reserved.
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Citation Index Journal |
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V.R., Radhakrishnan M., Ramasamy H., Zabiri V., Do Thanh N.M., Tahir M.R., Hamdi H., Mukhtar N.M., Ramli |
author_facet |
V.R., Radhakrishnan M., Ramasamy H., Zabiri V., Do Thanh N.M., Tahir M.R., Hamdi H., Mukhtar N.M., Ramli |
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V.R., Radhakrishnan |
title |
Heat exchanger fouling model and preventive maintenance scheduling tool |
title_short |
Heat exchanger fouling model and preventive maintenance scheduling tool |
title_full |
Heat exchanger fouling model and preventive maintenance scheduling tool |
title_fullStr |
Heat exchanger fouling model and preventive maintenance scheduling tool |
title_full_unstemmed |
Heat exchanger fouling model and preventive maintenance scheduling tool |
title_sort |
heat exchanger fouling model and preventive maintenance scheduling tool |
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2007 |
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http://eprints.utp.edu.my/612/1/paper.pdf http://www.scopus.com/inward/record.url?eid=2-s2.0-34548061844&partnerID=40&md5=76fd0019a77691173270c65e38591b24 http://eprints.utp.edu.my/612/ |
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