Thermodynamic Analysis for Liquefaction of Natural Gas Using the C3-MR Refrigeration Process

Pereira, Clementino; Handaya, S Asep; Sutrasno, K

doi:10.7763/ijcea.2014.v5.343

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…Hence, the adoption of the C3MR process with extended end flash system is favoured. The exergy efficiencies as calculated in this study compare favourably with the values in literature which range from 30-50% [9,13,23]. The differences in exact values are definitely caused by process conditions and simulation assumptions.…”

Section: Results Of Thermodynamic Analysis Of C3mr Process Schemessupporting

confidence: 72%

Archives of Thermodynamics

Akinsipe,

Anozie,

Babatunde

2020

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This paper describes the simulation, exergy analysis and comparison of two commonly applied liquefaction of technologies natural gas, namely: propane precooled mixed refrigerant process (C3MR) and dual mixed refrigerant process (DMR) alongside two modifications of each employing end flash systems. The C3MR and DMR process schemes were simulated using the commercial software to mathematically model chemical processes. These schemes were then analysed using energy and exergy calculations to determine their performances. The exergy efficiency for the C3MR processes without end flash system, with simple end flash system and extended end flash system were evaluated as 29%, 31%, and 33%, respectively, while the exergy efficiency for the DMR processes without end flash system, with simple end flash system, and extended end flash system were evaluated as 26%, 25.5%, and 30%, respectively. The results achieved show that the extended end flash system versions of the schemes are most efficient. Furthermore, the exergy analysis depicted that the major equipment that must be enhanced in order to improve the cycle exergy efficiencies are the compressors, heat exchangers, and coolers.

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Section: Results Of Thermodynamic Analysis Of C3mr Process Schemessupporting

confidence: 72%

Archives of Thermodynamics

Akinsipe,

Anozie,

Babatunde

2020

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“…The emission from LNG complies with the current international maritime organization regulation evaluated the selection of C3-MR and cascade cycle in natural gas liquefaction process using Aspen Hysys V7.3 by Peng-Robinson equation of state. The parameters evaluated were the specific horse power, LNG production and revenue of LNG obtained from the two processes [3,10,11].…”

Section: Petroleum and Chemical Industry Internationalmentioning

confidence: 99%

Untitled

2023

PCII

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The liquefied natural gas remains the most viable means of global distribution of natural gas. Unfortunately, the liquefying process consumes high amount of energy impacting negatively on the economic viability of the LNG business. Based on this, the current work assesses the selection of propane pre-cooled mixed refrigerant [C 3 MR] and methane, ethane and propane [C 1 -C 3 ] refrigerant cascade system as a refrigerant with essential benefits in LNG production. The process was simulated using Aspen HYSYS, and its economic tool was used to carry out the techno economic analysis and estimate the duties of the two processes. The results obtained showed that the production cost were $20,345,490 and $114,796,200 for C 1 -C 3 cascade refrigeration system and C 3 MR, respectively. The duty were 568.721 MW and 626.462 MW for the C 1 -C 3 cascade refrigeration system and C3MR, respectively. This shows that C 1 -C 3 cascade refrigeration system performed better than the C 3 MR. Therefore, the former refrigerant is preferred in a liquefying process than the latter as it is cheaper, consumes less amount of energy and is more environmentally friendly.

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“…An optimal LNG plant is categorized by having low initial cost as well as low energy consumption. , Previous studies showed that the liquefaction energy efficiency can be improved by optimizing the mixed refrigerant composition and mass flow rate . A simulation of the propane precooled mixed refrigerant (C3-MR) liquefaction plant planned to be built with three pressure levels of propane cooling indicated that the specific horse power for the C3-MR process depends on natural gas supply temperature and pressure . The MR composition abiding with the variation in ambient conditions has been determined for the small and midscale LNG plants, , and methods for the selection of the refrigerant composition were proposed. − About 77% of base-load natural gas liquefaction plants employ a propane precooled mixed refrigerant cycle (APCI) where the propane cycle and the multicomponent refrigerant (MCR) cycle are involved in the cooling and liquefaction of natural gas .…”

Section: Introductionmentioning

confidence: 99%

Investigation and Performance Improvement of the Propane Precooling Cycle in the Propane Precooled Mixed Refrigerant Cycle Liquefaction Process

Fahmy

Nabih

El-Aziz

2016

Ind. Eng. Chem. Res.

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This study aims to improve the performance of the propane precooling cycle used for precooling of both natural gas and mixed refrigerant in the Propane Precooled Mixed Refrigerant Cycle (PPMRC) in an LNG plant. The unit is simulated by Aspen HYSYS version 7.3 for optimization of the propane precooling cycle to provide the minimum energy consumption of the propane compressors and the two air-coolers. The effect of subcooling temperature in the propane air-cooler, the number of compression stages in the propane cycle, and the quality of the natural gas feed are investigated. Results reveal the extent of reduction in power consumption on decreasing the subcooling temperature of liquid propane. The optimal subcooling temperature of liquid propane and number of compression stages in the propane cycle is determined. The positive impact attained in the performance of the propane cycle is higher for lean feed gas than for rich feed gas. The decrease of liquid propane subcooling temperature has a dominating influence on all performance criteria and, hence, can be considered as the key contributor affecting the propane precooling cycle in the PPMRC liquefaction process.

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Thermodynamic Analysis for Liquefaction of Natural Gas Using the C3-MR Refrigeration Process

Cited by 5 publications

References 5 publications

Archives of Thermodynamics

Archives of Thermodynamics

Untitled

Investigation and Performance Improvement of the Propane Precooling Cycle in the Propane Precooled Mixed Refrigerant Cycle Liquefaction Process

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