Economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions

Based on the recycle split vapor (RSV) process for ethane recovery, this paper proposes three primary improved processes, and in China, five rich feed compositions are selected as preliminary data. We use economic and thermodynamic analysis methods to compare and analyze RSV and its improved process...

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Autores principales:	Hong Jiang, Haoyu Li
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Rich feed Ethane recovery Enhanced processes Plate-fin heat exchanger Economic and thermodynamic comparison Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/50847c14228d4af89c1adf2f24ac4a72
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spelling	oai:doaj.org-article:50847c14228d4af89c1adf2f24ac4a722021-11-28T04:34:08ZEconomic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions2352-484710.1016/j.egyr.2021.08.127https://doaj.org/article/50847c14228d4af89c1adf2f24ac4a722021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2352484721007290https://doaj.org/toc/2352-4847Based on the recycle split vapor (RSV) process for ethane recovery, this paper proposes three primary improved processes, and in China, five rich feed compositions are selected as preliminary data. We use economic and thermodynamic analysis methods to compare and analyze RSV and its improved processes comprehensively. The comparative analysis results show that: ①The enhanced techniques all show a certain energy-saving effect, especially it is evident for the modified recycle split vapor with liquid flashing (RSVF) process to save energy; ②The geometric structure of the plate-fin heat exchanger inside the cold box significantly affects its capital cost, the design of the plate-fin heat exchanger in the corresponding cold box is basically the same, with slight differences under different feed conditions; ③The compressors and expander are the most prominent investment types of equipment, and their purchase costs accounting for about 70% of the total purchased equipment costs. The values of financial net present value (FNPV) of the improved processes are all greater than zero under the operating conditions in this study, which can meet the profitability required by the benchmark rate of return. The project has a more significant return on investment and shorter return time; ④The improved processes under five feeds show excellent performance and adaptability: the larger GPM (gallons per thousand cubic feet) values of feed compositions, the more apparent the energy saving. The main contributors to the exergy destruction are towers, compressors, expander, and cold boxes; ⑤Compared with the improved recycle split vapor with gas extraction (RSVG) and supplemental rectification with compression and recycle split vapor (SRCR) processes, the improved RSVF process has a better pre-separation effect for heavy hydrocarbons by adding a flash separator, which makes this process have less exergy destruction and enormous energy-saving potential.Hong JiangHaoyu LiElsevierarticleRich feedEthane recoveryEnhanced processesPlate-fin heat exchangerEconomic and thermodynamic comparisonElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENEnergy Reports, Vol 7, Iss , Pp 8207-8227 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Rich feed Ethane recovery Enhanced processes Plate-fin heat exchanger Economic and thermodynamic comparison Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Rich feed Ethane recovery Enhanced processes Plate-fin heat exchanger Economic and thermodynamic comparison Electrical engineering. Electronics. Nuclear engineering TK1-9971 Hong Jiang Haoyu Li Economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions
description	Based on the recycle split vapor (RSV) process for ethane recovery, this paper proposes three primary improved processes, and in China, five rich feed compositions are selected as preliminary data. We use economic and thermodynamic analysis methods to compare and analyze RSV and its improved processes comprehensively. The comparative analysis results show that: ①The enhanced techniques all show a certain energy-saving effect, especially it is evident for the modified recycle split vapor with liquid flashing (RSVF) process to save energy; ②The geometric structure of the plate-fin heat exchanger inside the cold box significantly affects its capital cost, the design of the plate-fin heat exchanger in the corresponding cold box is basically the same, with slight differences under different feed conditions; ③The compressors and expander are the most prominent investment types of equipment, and their purchase costs accounting for about 70% of the total purchased equipment costs. The values of financial net present value (FNPV) of the improved processes are all greater than zero under the operating conditions in this study, which can meet the profitability required by the benchmark rate of return. The project has a more significant return on investment and shorter return time; ④The improved processes under five feeds show excellent performance and adaptability: the larger GPM (gallons per thousand cubic feet) values of feed compositions, the more apparent the energy saving. The main contributors to the exergy destruction are towers, compressors, expander, and cold boxes; ⑤Compared with the improved recycle split vapor with gas extraction (RSVG) and supplemental rectification with compression and recycle split vapor (SRCR) processes, the improved RSVF process has a better pre-separation effect for heavy hydrocarbons by adding a flash separator, which makes this process have less exergy destruction and enormous energy-saving potential.
format	article
author	Hong Jiang Haoyu Li
author_facet	Hong Jiang Haoyu Li
author_sort	Hong Jiang
title	Economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions
title_short	Economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions
title_full	Economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions
title_fullStr	Economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions
title_full_unstemmed	Economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions
title_sort	economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/50847c14228d4af89c1adf2f24ac4a72
work_keys_str_mv	AT hongjiang economicandthermodynamiccomparisonofenhancedrecyclesplitvaporprocessesforethanerecoveryunderdifferentrichfeedcompositions AT haoyuli economicandthermodynamiccomparisonofenhancedrecyclesplitvaporprocessesforethanerecoveryunderdifferentrichfeedcompositions
_version_	1718408316588130304

Economic and thermodynamic comparison of enhanced recycle split vapor processes for ethane recovery under different rich feed compositions

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