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Structural Arrangement of End Flash System for LNG Production

End flash system is important in LNG Chain as it increases LNG throughput by reducing the cooling load in Main Cryogenic Heat Exchanger (MCHE). One of the main problems encountered in industrial installations of end flash system is related in particular to the optimum use of the compression apparatu...

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Main Author: Chia, Boon Chung
Format: Final Year Project
Language:English
Published: Universiti Teknologi PETRONAS 2013
Subjects:
TP Chemical technology
Online Access:http://utpedia.utp.edu.my/8422/1/DISSERTATION_CHIA%20BOON%20CHUNG_12546_CHEMICAL.pdf
http://utpedia.utp.edu.my/8422/
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spelling my-utp-utpedia.84222013-10-09T11:07:21Z http://utpedia.utp.edu.my/8422/ Structural Arrangement of End Flash System for LNG Production Chia, Boon Chung TP Chemical technology End flash system is important in LNG Chain as it increases LNG throughput by reducing the cooling load in Main Cryogenic Heat Exchanger (MCHE). One of the main problems encountered in industrial installations of end flash system is related in particular to the optimum use of the compression apparatus which represents a significant investment, both in terms of initial purchase and in terms of power consumption. The energy needed for the typical end flash system is approximately 995 kJ for the production of 1 kg of LNG. In this work, simulations on the structural arrangement of end flash system were conducted in the aim of reducing the specific power of production of LNG. The energy required to produce 1 kg of LNG and machinery power consumed by the end flash system are investigated. Two optimization cases, namely pure refrigerant cascade and mixed refrigerant cascade, have been studied and analyzed from technical and economical aspect. Results show that the base case needs 351 kJ to produce 1 kg of LNG while the mixed refrigerant cascade consumes only 273 kJ for the same purpose. Besides that, mixed refrigerant cascade gives higher LNG rundown at 542 t/h compared to the base case which gives only 540 t/h of LNG. In terms of economic analysis, the additional LNG rundown yields additional revenue of USD 13.6 million. The profitability analysis of installation of mixed refrigerant cascade over the base case shows positive feedback as ROI is 20.7% and IRR is 17.8% which is higher than the MARR. The study develops a new process which allows significant increase in LNG production with lower energy consumption as compared to the current end flash system. Universiti Teknologi PETRONAS 2013-05 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/8422/1/DISSERTATION_CHIA%20BOON%20CHUNG_12546_CHEMICAL.pdf Chia, Boon Chung (2013) Structural Arrangement of End Flash System for LNG Production. Universiti Teknologi PETRONAS. (Unpublished)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Chia, Boon Chung
Structural Arrangement of End Flash System for LNG Production
description End flash system is important in LNG Chain as it increases LNG throughput by reducing the cooling load in Main Cryogenic Heat Exchanger (MCHE). One of the main problems encountered in industrial installations of end flash system is related in particular to the optimum use of the compression apparatus which represents a significant investment, both in terms of initial purchase and in terms of power consumption. The energy needed for the typical end flash system is approximately 995 kJ for the production of 1 kg of LNG. In this work, simulations on the structural arrangement of end flash system were conducted in the aim of reducing the specific power of production of LNG. The energy required to produce 1 kg of LNG and machinery power consumed by the end flash system are investigated. Two optimization cases, namely pure refrigerant cascade and mixed refrigerant cascade, have been studied and analyzed from technical and economical aspect. Results show that the base case needs 351 kJ to produce 1 kg of LNG while the mixed refrigerant cascade consumes only 273 kJ for the same purpose. Besides that, mixed refrigerant cascade gives higher LNG rundown at 542 t/h compared to the base case which gives only 540 t/h of LNG. In terms of economic analysis, the additional LNG rundown yields additional revenue of USD 13.6 million. The profitability analysis of installation of mixed refrigerant cascade over the base case shows positive feedback as ROI is 20.7% and IRR is 17.8% which is higher than the MARR. The study develops a new process which allows significant increase in LNG production with lower energy consumption as compared to the current end flash system.
format Final Year Project
author Chia, Boon Chung
author_facet Chia, Boon Chung
author_sort Chia, Boon Chung
title Structural Arrangement of End Flash System for LNG Production
title_short Structural Arrangement of End Flash System for LNG Production
title_full Structural Arrangement of End Flash System for LNG Production
title_fullStr Structural Arrangement of End Flash System for LNG Production
title_full_unstemmed Structural Arrangement of End Flash System for LNG Production
title_sort structural arrangement of end flash system for lng production
publisher Universiti Teknologi PETRONAS
publishDate 2013
url http://utpedia.utp.edu.my/8422/1/DISSERTATION_CHIA%20BOON%20CHUNG_12546_CHEMICAL.pdf
http://utpedia.utp.edu.my/8422/
_version_ 1739831572919484416
score 13.244368

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