Evolution and optimization of the dual mixed refrigerant process of natural gas liquefaction

Khan, Mohd Shariq; Karimi, Iftekhar A.; Lee, Moonyong

doi:10.1016/j.applthermaleng.2015.11.092

Cited by 109 publications

(46 citation statements)

References 9 publications

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“…Available at www.ThermalFluidsCentral.org (Khan et al, 2015). Qyyum et al proposed a simple and highly efficient hybrid modified coordinate descent (HMCD) algorithm was proposed to cope with the optimization of the natural gas liquefaction processin in 2017 (Qyyum et al, 2017).…”

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

“…At present, the mixed refrigerant processes mainly used in industry are: single mixed refrigerant process (SMR), propane pre-cooled mixed refrigerant process (C3MR), AP-X expansion process and double-cycle mixed refrigerant process (DMR), etc. (Shi et al, 2001;Yin et al, 2010;Zhao et al, 2010;Wang et al, 2015;Khan et al, 2015). There is no precooling stage in the SMR process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simulation and Optimization of Multistage Compressed DMR Natural Gas Liquefaction Process

Rong-ge¹,

Zhang²,

Xu³

et al. 2020

Frontiers in Heat and Mass Transfer

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Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation and Optimization of Multistage Compressed DMR Natural Gas Liquefaction Process

Rong-ge¹,

Zhang²,

Xu³

et al. 2020

Frontiers in Heat and Mass Transfer

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“…Among all well‐demonstrated LNG processes, the DMR process is considered to be a promising candidate for both offshore and onshore LNG production, primarily due to its relative high‐energy efficiency resulting from its better utilization of cooling power, which is distributed in two different mixed refrigerants cycles 6–9 . The DMR process has higher capacity than the SMR process.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al 14 used the commercial simulator Aspen Hysys to simulate and optimize the DMR process using Hysys's built‐in optimization method to reduce the specific annual cost and shaft work requirement for LNG production. Fazlollahi et al 15 presented an optimal design of a DMR process with a 73% liquefaction rate using a GA. Khan et al 8 presented a multiobjective study to optimize the DMR process using the box approach by considering specific compression power and total UA and objectives. Lee and Moon 9 proposed an optimal design of a DMR process by applying successive reduced quadratic programming (SRQPD).…”

Section: Introductionmentioning

confidence: 99%

Weed colonization‐based performance improvement opportunities in dual‐mixed refrigerant natural gas liquefaction process

Qyyum

Qadeer

Khan

et al. 2020

Energy Science & Engineering

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Dual‐mixed refrigerant (DMR) process is a promising candidate for liquefying the natural gas (LNG) at onshore as well as offshore sites, thanks to its higher liquefaction capacity and flexibility in using full gas turbines. DMR involves two mixed refrigerant cycles to perform precooling and subcooling of natural gas (NG), and these refrigerant compositions need constant tweaking to match the ever‐changing NG cooling curve, as it is obtained from different gas fields. Mismatching of cooling curves often results in suboptimal operation, which ultimately leads to an increase in the overall energy consumption. Thus, this study is aimed at making DMR liquefaction operation close to optimal using the invasive‐weed paradigm. At first, the decision variables for performance improvement were determined using degrees of freedom analysis then through invasive‐weed paradigm the best set of parameters that results in minimal overall energy consumption were obtained. For the given set of conditions, it was found that after optimization, the DMR process can produce LNG using 16.2% less compression power compared to the published optimized DMR process. Taking into account the higher sensitivity of the DMR process against NG feed conditions, the IWO approach was also examined to find the multiple optimal solutions corresponding to different sets of feed conditions. The thermodynamic evaluation revealed that the mixed refrigerant involves in NG subcooling and interstage coolers have the highest level of exergy destruction. After successful performance improvement of the DMR process, it is also found that still, 62% improvement potential (based on avoidable/unavoidable exergy destruction analysis) is available in the DMR process that can be attained through either sole optimization or optimal retrofitting/revamping.

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“…Fazlollahi et al [20] compare alternative liquefaction options in the frame of cryogenic carbon capture systems in different operation modes. Khan et al [21] focus on the dual mixed-refrigerant process, with the objective of minimising simultaneously the heat transfer conductance and compression power. Mehrpooya et al [22] introduce a novel configuration for gas liquefaction systems at large scale, using absorption refrigeration systems.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic comparison of three small-scale gas liquefaction systems

Nguyen

Rothuizen

Markussen

et al. 2018

Applied Thermal Engineering

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Evolution and optimization of the dual mixed refrigerant process of natural gas liquefaction

Cited by 109 publications

References 9 publications

Simulation and Optimization of Multistage Compressed DMR Natural Gas Liquefaction Process

Simulation and Optimization of Multistage Compressed DMR Natural Gas Liquefaction Process

Weed colonization‐based performance improvement opportunities in dual‐mixed refrigerant natural gas liquefaction process

Thermodynamic comparison of three small-scale gas liquefaction systems

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