Exergy analysis of multistage cascade low temperature refrigeration systems used in olefin plants

Mafi, Mostafa; Naeynian, S.M. Mousavi; Amidpour, Majid

doi:10.1016/j.ijrefrig.2008.05.008

Cited by 60 publications

(38 citation statements)

References 6 publications

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“…Their study demonstrated some capabilities associated with advanced exergy analysis. Mafi et al [11] provided an exergy analysis for multicascade low temperature refrigeration systems with propylene and ethylene as refrigerant used in olefin plant. The exergetic efficiency of the multistage cascade process was calculated to be 30.88%.…”

Section: Introductionmentioning

confidence: 99%

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

Pereira¹,

Handaya²,

Sutrasno³

2014

IJCEA

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Abstract-This paper presents a propane precooled mixed refrigerant (C 3 -MR) liquefaction plant with 3 pressure levels of propane cooling that is planned to be build in Timor-Leste and the simulation of refrigeration system for C 3 -MR process that is to predict liquefied natural gas (LNG) specific horse power of the system. By varying the natural gas temperature between 10 and 50 o C and pressure between 20 and 60 bar respectively, the effect of natural gas temperature and pressure on specific horse power for the C 3 -MR was determined. The result of simulation indicates that the specific horse power for the C 3 -MR process depends on natural gas supply temperature and pressure. The increase of temperature from 30 o C to 50 o C results in 0.83% increase in specific horse power and the decrease of temperature from 30 to 10 o C results in 0.82% decrease in specific horse power. The pressure increase from 40 to 60 bar results in 0.37% decrease in specific horse power and decrease from 40 to 20 bar results in 0.39% increase in specific horse power. In addition that, the production capacity per train increase by 4.78% when natural gas pressure supplied from 40 to 60 bar and 7.22% decrease when pressure decrease from 40 to 20 bar.

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Section: Introductionmentioning

confidence: 99%

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

Pereira¹,

Handaya²,

Sutrasno³

2014

IJCEA

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“…With this analysis it is possible to evaluate the individual performance of each equipment or the general performance of the entire process. The exergetic analysis has been applied with great success by many authors in different processes [2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Exergetic analysis of the refrigeration system in ethylene and propylene production process

Fábrega

Rossi

Dangelo

2010

Energy

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“…17) stream are obtained in Table I. Figure 3 shows the refrigeration system matched against the grand composite curves (GCC) of the olefin plant separation process analysed in this work [20]. From the GCC, the information of each stage refrigeration duty and evaporating temperature can be read directly.…”

Section: Low Temperature Cascade Refrigeration Systemmentioning

confidence: 99%

Comparison of low temperature mixed refrigerant cycles for separation systems

Mafi

Amidpour

Naeynian

2009

Int. J. Energy Res.

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SUMMARYNumerous mixed refrigerant cycles (MRCs) were developed in the past several decades in different applications. In this paper, two sets of low temperature MRCs are developed and simulated for a typical olefin plant utilizing a mixture of methane, ethane, propane and nitrogen as cycle working fluid to replace the pure ethylene refrigeration cycle that is used in conjunction with propylene refrigeration cycle in conventional plants. The key parameters of the cycles including mixture compositions and operating pressure levels are optimized to meet the objective of minimum shaftwork in compressor. The results show that different cycle configuration has different optimal mixture composition and low and high operating pressures. The results of exergy analysis reveal that the main location of the exergy loss in the cycles is the heat exchanger system. Also, the Carnot factor versus heat flow diagram is provided to identify the distribution of inefficiencies in the heat exchangers for each cycle. The simulation results show that MRCs can improve the thermodynamic performance of refrigeration system using the optimal working fluid mixture composition, optimal high and low operating pressures and optimal arrangement of the cycle components.

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Exergy analysis of multistage cascade low temperature refrigeration systems used in olefin plants

Cited by 60 publications

References 6 publications

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

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

Exergetic analysis of the refrigeration system in ethylene and propylene production process

Comparison of low temperature mixed refrigerant cycles for separation systems

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