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AuthorMkacher, Hajer
AuthorAlMomani, Fares
AuthorPal, Ajinkya
AuthorKarimi, Iftekhar A.
AuthorAl-musleh, Easa I.
Available date2023-06-25T08:25:35Z
Publication Date2022
Publication NameInternational Journal of Energy Research
ResourceScopus
URIhttp://dx.doi.org/10.1002/er.7749
URIhttp://hdl.handle.net/10576/44755
AbstractThe use of liquefied natural gas (LNG) has grown over the last decade owing to an increase in the global energy demand. This work presents a pioneering approach for rigorous simulation of an actual cold section of an LNG plant and provides a potential process optimization to achieve a higher production rate (PR) while reducing the specific power consumption (SPC). The concept of upfront nitrogen removal (UNrem) from the natural gas (NG) feed was introduced, and the impact on the PR and SPC was presented. We considered seven scenarios with varying percentages of UNrem and compared them with the conventional plant design (base case) while maintaining the product specifications (LNG high heating value [HHV] of 1105 Btu/Scf and NGL reid vapor pressure [RVP] of 2042 psia). The results show that UNrem of 87.5% from the NG feed can reduce the total power requirements by 0.24%, increase the production flow rate by 4.4%, and decrease the exergy losses by 0.23% compared with the base case. The UNrem can also have a significant improvement on the plant capacity without the need for structural modifications in the cold section. Future research should focus on the efficiency and feasibility of different UNrem processes as well as examine the use of a large-scale system.
SponsorThis paper was made possible by the fund from the Qatar National Research Fund, Grant No. NPRP11S-1231-170152 (a member of the Qatar Foundation). The authors acknowledge the support provided by Qatar University. The statements made herein are solely the responsibility of the authors.
Languageen
PublisherJohn Wiley and Sons Ltd
Subjectenergy optimization
liquefied natural gas (LNG)
particle swarm optimization (PSO)
simulation-based optimization
upfront nitrogen removal
TitleRoadmap toward energy-positive upfront nitrogen removal process in baseload LNG plant
TypeArticle
Pagination20556-20572
Issue Number14
Volume Number46
dc.accessType Abstract Only


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