Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology

Ongoebi Maureen Orubide Etebu; Joy Ejayeta Abraham-Igwemoh

doi:doi:10.11648/j.ijimse.20200502.11

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Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology

Ongoebi Maureen Orubide Etebu, Joy Ejayeta Abraham-Igwemoh

Published in International Journal of Industrial and Manufacturing Systems Engineering (Volume 5, Issue 2)

Received: 24 April 2020 Accepted: 25 May 2020 Published: 28 June 2020

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Abstract

This research employs hybrid pinch analysis method to evaluate the heat exchanger network (HEN) of an existing refining plant for thermal design bottlenecks. The pinch rules and thermodynamic models were used to analyze the existing network design using available heat flow data to and from each cascade to determine the pinch temperature on incremental heat changes. The pinch point was discovered at the 6^th and 7^th temperature interval corresponding to a process pinch of 188°C with temperature above and below pinch at 193°C and 183°C respectively. The temperature profile showed two distinct regimes: exponential and linear trend lines within 0°C and 110°C which indicated an initial uneven temperature rise that later stabilized with increment proportional to the heat flow quantity within the heat exchanger with time. Furthermore, the temperature of the crude after it passed through the preheat exchanger network in the base case was found to be 242°C but through the retrofit method 275°C was achieved resulting in 33°C temperature differential. By this approach, the base case number of heat exchangers and trains were reduced from 36 and 20 to 30 and 10 respectively and an energy saving of about 19255KJ was achieved for each second the plan was operated.

Published in	International Journal of Industrial and Manufacturing Systems Engineering (Volume 5, Issue 2)
DOI	10.11648/j.ijimse.20200502.11
Page(s)	14-22
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Heat Exchangers, Pinch Analysis, Crude Oil, Energy

References

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APA Style

Ongoebi Maureen Orubide Etebu, Joy Ejayeta Abraham-Igwemoh. (2020). Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology. International Journal of Industrial and Manufacturing Systems Engineering, 5(2), 14-22. https://doi.org/10.11648/j.ijimse.20200502.11

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ACS Style

Ongoebi Maureen Orubide Etebu; Joy Ejayeta Abraham-Igwemoh. Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology. Int. J. Ind. Manuf. Syst. Eng. 2020, 5(2), 14-22. doi: 10.11648/j.ijimse.20200502.11

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AMA Style

Ongoebi Maureen Orubide Etebu, Joy Ejayeta Abraham-Igwemoh. Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology. Int J Ind Manuf Syst Eng. 2020;5(2):14-22. doi: 10.11648/j.ijimse.20200502.11

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@article{10.11648/j.ijimse.20200502.11,
  author = {Ongoebi Maureen Orubide Etebu and Joy Ejayeta Abraham-Igwemoh},
  title = {Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology},
  journal = {International Journal of Industrial and Manufacturing Systems Engineering},
  volume = {5},
  number = {2},
  pages = {14-22},
  doi = {10.11648/j.ijimse.20200502.11},
  url = {https://doi.org/10.11648/j.ijimse.20200502.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijimse.20200502.11},
  abstract = {This research employs hybrid pinch analysis method to evaluate the heat exchanger network (HEN) of an existing refining plant for thermal design bottlenecks. The pinch rules and thermodynamic models were used to analyze the existing network design using available heat flow data to and from each cascade to determine the pinch temperature on incremental heat changes. The pinch point was discovered at the 6th and 7th temperature interval corresponding to a process pinch of 188°C with temperature above and below pinch at 193°C and 183°C respectively. The temperature profile showed two distinct regimes: exponential and linear trend lines within 0°C and 110°C which indicated an initial uneven temperature rise that later stabilized with increment proportional to the heat flow quantity within the heat exchanger with time. Furthermore, the temperature of the crude after it passed through the preheat exchanger network in the base case was found to be 242°C but through the retrofit method 275°C was achieved resulting in 33°C temperature differential. By this approach, the base case number of heat exchangers and trains were reduced from 36 and 20 to 30 and 10 respectively and an energy saving of about 19255KJ was achieved for each second the plan was operated.},
 year = {2020}
}

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TY  - JOUR
T1  - Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology
AU  - Ongoebi Maureen Orubide Etebu
AU  - Joy Ejayeta Abraham-Igwemoh
Y1  - 2020/06/28
PY  - 2020
N1  - https://doi.org/10.11648/j.ijimse.20200502.11
DO  - 10.11648/j.ijimse.20200502.11
T2  - International Journal of Industrial and Manufacturing Systems Engineering
JF  - International Journal of Industrial and Manufacturing Systems Engineering
JO  - International Journal of Industrial and Manufacturing Systems Engineering
SP  - 14
EP  - 22
PB  - Science Publishing Group
SN  - 2575-3142
UR  - https://doi.org/10.11648/j.ijimse.20200502.11
AB  - This research employs hybrid pinch analysis method to evaluate the heat exchanger network (HEN) of an existing refining plant for thermal design bottlenecks. The pinch rules and thermodynamic models were used to analyze the existing network design using available heat flow data to and from each cascade to determine the pinch temperature on incremental heat changes. The pinch point was discovered at the 6th and 7th temperature interval corresponding to a process pinch of 188°C with temperature above and below pinch at 193°C and 183°C respectively. The temperature profile showed two distinct regimes: exponential and linear trend lines within 0°C and 110°C which indicated an initial uneven temperature rise that later stabilized with increment proportional to the heat flow quantity within the heat exchanger with time. Furthermore, the temperature of the crude after it passed through the preheat exchanger network in the base case was found to be 242°C but through the retrofit method 275°C was achieved resulting in 33°C temperature differential. By this approach, the base case number of heat exchangers and trains were reduced from 36 and 20 to 30 and 10 respectively and an energy saving of about 19255KJ was achieved for each second the plan was operated.
VL  - 5
IS  - 2
ER  -

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Author Information

Ongoebi Maureen Orubide Etebu

Department of Mechanical Engineering, Faculty of Engineering, Maritime University, Okerenkoko, Gbaramatu, Delta, Nigeria
Joy Ejayeta Abraham-Igwemoh

Department of Mechanical Engineering, Faculty of Engineering, University of Port Harcourt, Choba, Port Harcourt, Rivers, Nigeria

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Plain Text BibTeX RIS

APA Style

Ongoebi Maureen Orubide Etebu, Joy Ejayeta Abraham-Igwemoh. (2020). Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology. International Journal of Industrial and Manufacturing Systems Engineering, 5(2), 14-22. https://doi.org/10.11648/j.ijimse.20200502.11

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ACS Style

Ongoebi Maureen Orubide Etebu; Joy Ejayeta Abraham-Igwemoh. Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology. Int. J. Ind. Manuf. Syst. Eng. 2020, 5(2), 14-22. doi: 10.11648/j.ijimse.20200502.11

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AMA Style

Ongoebi Maureen Orubide Etebu, Joy Ejayeta Abraham-Igwemoh. Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology. Int J Ind Manuf Syst Eng. 2020;5(2):14-22. doi: 10.11648/j.ijimse.20200502.11

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@article{10.11648/j.ijimse.20200502.11,
  author = {Ongoebi Maureen Orubide Etebu and Joy Ejayeta Abraham-Igwemoh},
  title = {Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology},
  journal = {International Journal of Industrial and Manufacturing Systems Engineering},
  volume = {5},
  number = {2},
  pages = {14-22},
  doi = {10.11648/j.ijimse.20200502.11},
  url = {https://doi.org/10.11648/j.ijimse.20200502.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijimse.20200502.11},
  abstract = {This research employs hybrid pinch analysis method to evaluate the heat exchanger network (HEN) of an existing refining plant for thermal design bottlenecks. The pinch rules and thermodynamic models were used to analyze the existing network design using available heat flow data to and from each cascade to determine the pinch temperature on incremental heat changes. The pinch point was discovered at the 6th and 7th temperature interval corresponding to a process pinch of 188°C with temperature above and below pinch at 193°C and 183°C respectively. The temperature profile showed two distinct regimes: exponential and linear trend lines within 0°C and 110°C which indicated an initial uneven temperature rise that later stabilized with increment proportional to the heat flow quantity within the heat exchanger with time. Furthermore, the temperature of the crude after it passed through the preheat exchanger network in the base case was found to be 242°C but through the retrofit method 275°C was achieved resulting in 33°C temperature differential. By this approach, the base case number of heat exchangers and trains were reduced from 36 and 20 to 30 and 10 respectively and an energy saving of about 19255KJ was achieved for each second the plan was operated.},
 year = {2020}
}

Copy | Download

TY  - JOUR
T1  - Heat Exchanger Network Thermal Analysis Using Hybrid Pinch Technology
AU  - Ongoebi Maureen Orubide Etebu
AU  - Joy Ejayeta Abraham-Igwemoh
Y1  - 2020/06/28
PY  - 2020
N1  - https://doi.org/10.11648/j.ijimse.20200502.11
DO  - 10.11648/j.ijimse.20200502.11
T2  - International Journal of Industrial and Manufacturing Systems Engineering
JF  - International Journal of Industrial and Manufacturing Systems Engineering
JO  - International Journal of Industrial and Manufacturing Systems Engineering
SP  - 14
EP  - 22
PB  - Science Publishing Group
SN  - 2575-3142
UR  - https://doi.org/10.11648/j.ijimse.20200502.11
AB  - This research employs hybrid pinch analysis method to evaluate the heat exchanger network (HEN) of an existing refining plant for thermal design bottlenecks. The pinch rules and thermodynamic models were used to analyze the existing network design using available heat flow data to and from each cascade to determine the pinch temperature on incremental heat changes. The pinch point was discovered at the 6th and 7th temperature interval corresponding to a process pinch of 188°C with temperature above and below pinch at 193°C and 183°C respectively. The temperature profile showed two distinct regimes: exponential and linear trend lines within 0°C and 110°C which indicated an initial uneven temperature rise that later stabilized with increment proportional to the heat flow quantity within the heat exchanger with time. Furthermore, the temperature of the crude after it passed through the preheat exchanger network in the base case was found to be 242°C but through the retrofit method 275°C was achieved resulting in 33°C temperature differential. By this approach, the base case number of heat exchangers and trains were reduced from 36 and 20 to 30 and 10 respectively and an energy saving of about 19255KJ was achieved for each second the plan was operated.
VL  - 5
IS  - 2
ER  -

Copy | Download