Optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technology

Since natural gas liquefaction operation is an energy-intensive technology. Research has been published for the optimization of the process by utilizing the first principal complex nonlinear SMR model. The process is computationally expensive and requires several hours or even days for optimization....

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Main Author: Wahid Ali
Format: Article
Language:English
Published: Elsevier 2022-12-01
Series:Results in Engineering
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2590123022004145
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author Wahid Ali
author_facet Wahid Ali
author_sort Wahid Ali
collection DOAJ
description Since natural gas liquefaction operation is an energy-intensive technology. Research has been published for the optimization of the process by utilizing the first principal complex nonlinear SMR model. The process is computationally expensive and requires several hours or even days for optimization. To address this issue, this study proposes a metamodel for natural gas liquefaction featuring a single mixed refrigerant cryogenic cycle. The SMR model was modeled and simulated by utilizing Aspen Hysys software. However, the metamodel was developed by utilizing radial basis function methodology and optimization work using Matlab. The results summary comparison for specific compression duty for metamodel was 0.3863 kW/kg-NG. The first principle-based published study of this duty was 0.3625 (kW/kg-NG) which is approximately 6.5% lower than the current study. However, a huge reduction in computational time was obtained. The metamodel building and optimization time-lapse was 292.96 s while the same first principle-based model lapse 201.24 h using 300 iterations. In comparison, it can be inferred that metamodel could capture almost all-important characteristics of the firs-principle based model. Hence, the proposed study could be considered as an alternative to the first principle model for optimization purposes. This research may prove to be more vital especially in any abrupt changing or uncertain conditions or for real-time plant optimization.
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spelling doaj.art-bec0a849c66d470b871fe14bd7e18f872022-12-22T04:38:16ZengElsevierResults in Engineering2590-12302022-12-0116100744Optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technologyWahid Ali0Department of Chemical Engineering Technology, College of Applied Industrial Technology (CAIT), Jazan University, Jazan, 45971, Kingdom of Saudi ArabiaSince natural gas liquefaction operation is an energy-intensive technology. Research has been published for the optimization of the process by utilizing the first principal complex nonlinear SMR model. The process is computationally expensive and requires several hours or even days for optimization. To address this issue, this study proposes a metamodel for natural gas liquefaction featuring a single mixed refrigerant cryogenic cycle. The SMR model was modeled and simulated by utilizing Aspen Hysys software. However, the metamodel was developed by utilizing radial basis function methodology and optimization work using Matlab. The results summary comparison for specific compression duty for metamodel was 0.3863 kW/kg-NG. The first principle-based published study of this duty was 0.3625 (kW/kg-NG) which is approximately 6.5% lower than the current study. However, a huge reduction in computational time was obtained. The metamodel building and optimization time-lapse was 292.96 s while the same first principle-based model lapse 201.24 h using 300 iterations. In comparison, it can be inferred that metamodel could capture almost all-important characteristics of the firs-principle based model. Hence, the proposed study could be considered as an alternative to the first principle model for optimization purposes. This research may prove to be more vital especially in any abrupt changing or uncertain conditions or for real-time plant optimization.http://www.sciencedirect.com/science/article/pii/S2590123022004145Natural gas liquefactionSMR processFLNG plantMetamodelOptimization
spellingShingle Wahid Ali
Optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technology
Results in Engineering
Natural gas liquefaction
SMR process
FLNG plant
Metamodel
Optimization
title Optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technology
title_full Optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technology
title_fullStr Optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technology
title_full_unstemmed Optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technology
title_short Optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technology
title_sort optimal operational analysis of metamodel based single mixed refrigerant cryogenic process for floating liquefied natural gas plant technology
topic Natural gas liquefaction
SMR process
FLNG plant
Metamodel
Optimization
url http://www.sciencedirect.com/science/article/pii/S2590123022004145
work_keys_str_mv AT wahidali optimaloperationalanalysisofmetamodelbasedsinglemixedrefrigerantcryogenicprocessforfloatingliquefiednaturalgasplanttechnology