On small-scale liquefaction of natural gas with supersonic separator: Energy and second law analyses

Interlenghi, Stefano Ferrari; Medeiros, José Luiz de; Araújo, Ofélia de Queiroz Fernandes

doi:10.1016/j.enconman.2020.113117

Cited by 23 publications

(7 citation statements)

References 32 publications

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“…Economically, because of the gas volume, the transport cost of natural gas is much more than that of liquids . LNG technology is a refrigeration process, which comprises removal of pollutants by pretreatment of gas, followed by gas cooling with refrigerant streams for separation of heavier hydrocarbons . The liquefaction process of natural gas at temperature of −162 ◦ C and atmospheric pressure produces liquified natural gas (LNG) .…”

Section: Recent Developments In Gas Flaring Reduction Technologiesmentioning

confidence: 99%

“…60 LNG technology is a refrigeration process, which comprises removal of pollutants by pretreatment of gas, followed by gas cooling with refrigerant streams for separation of heavier hydrocarbons. 61 The liquefaction process of natural gas at temperature of −162 • C and atmospheric pressure produces liquified natural gas (LNG). 62 At room temperature, the volume ratio of LNG is about 1/600 to gas.…”

Section: Power Generationmentioning

confidence: 99%

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Recent Developments in Natural Gas Flaring Reduction and Reformation to Energy-Efficient Fuels: A Review

Mansoor

Tahir

2021

Energy Fuels

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Annually billions of cubic meters of natural gas are flared around the globe at various oil and gas production sites. Natural gas flaring practices waste valuable energy resources that can be used for economic support and will also be beneficial to mitigate global warming effects. In this review, an overview of natural gas flaring impacts with respect to the environment with special emphasis on global annual natural gas flaring emissions and their reformation to energy-efficient fuels has been discussed. Initially, natural gas flaring emissions and their impacts in view of environmental pollution and global warming effects have been highlighted. The strategies to mitigate wastage to valuable energy resources through various flaring management strategies are also evaluated. In the main stream, various gas flaring reductions and utilization technologies based on their applications in the oil and gas industry and especially for remote oil and gas fields are discussed. Liquified natural gas (LNG) and compressed natural gas (CNG) technologies have been identified as the main gas flaring reduction methods based on their applicability, commerciality, and economical potential. In addition, gas to liquid (GTL) has been an advancing technology for the past many years toward its utilization of methane as a feed and converting it to useful industrial products such as synthesis crude and methanol. Finally, reformation technologies for synthesis gas (syngas) production such as thermal reforming, plasma reforming, and photoreforming are deliberated. Based on feed gas mixture, different reforming processes such as steam reforming of methane (SRM), dry reforming of methane (DRM), and bi-reforming of methane (BRM) are evaluated for hydrogen-rich syngas production. The future perspectives regarding gas flaring utilization technologies advancement with further improvements in utilization of flared gas to efficient energy fuels are proposed.

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Section: Recent Developments In Gas Flaring Reduction Technologiesmentioning

confidence: 99%

Section: Power Generationmentioning

confidence: 99%

Recent Developments in Natural Gas Flaring Reduction and Reformation to Energy-Efficient Fuels: A Review

Mansoor

Tahir

2021

Energy Fuels

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“…They observed that the integrated process showed an increase of 0.74% in energy consumption, whereas a decrease of 0.18% of the same was observed for a front-end NGL recovery plant. In past studies, they were generally focused on the comparison between different processes such as 3S, JT and turbo-expander 50 , 52 , 57 . For example, Okimoto et al 57 compared three different processes including JT, Turbo-expander and Twister 3S, separately.…”

Section: Introductionmentioning

confidence: 99%

“…Two other processes, including turbo-spender and 3S, showed 85 and 90% isentropic efficiency. Interlenghi et al 52 compared the performance of 3S with two different adiabatic expansion processes including JT process and turbo-expander process. These processes all start from a condition of 298.15 K and 80 bar to saturated liquefied natural gas at 115.4 K and 1.25 bar.…”

Section: Introductionmentioning

confidence: 99%

“…While one option is to use a specific type of process equipment, another option is to use these equipment in an integrated manner. Therefore, while it was reported that the use of a 3S instead of conventional processes improves the efficiency of a gas plant 5 , 52 , an option is to use an integrated configuration. This structure includes the simultaneous use of these two processes.…”

Section: Introductionmentioning

confidence: 99%

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A novel strategy for process optimization of a natural gas liquid recovery unit by replacing Joule–Thomson valve with supersonic separator

Shoghl

Naderifar

Farhadi

et al. 2022

Sci Rep

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The natural gas liquid recovery is an important process in a gas plant to correct hydrocarbon dew point and earn profit. In this study, a natural gas liquid recovery unit operated based on the Joule–Thomson process was investigated and its performance was optimized. To improve the system performance, the plant configuration and intermediate pressure ratio were defined as the variables and maximization of the natural gas liquid recovery rate and maximization of exergy efficiency were defined as the objective functions. To improve the plant performance, the amount of natural gas liquid recovery rate should be increased. To achieve this goal, several scenarios for the intermediate pressure ratio and three new configurations were proposed for the investigated gas plant. In the proposed configurations, the supersonic separators with optimized structures were used instead of the Joule–Thomson process. It was observed that all three proposed configurations improved the natural gas liquid recovery rate compared to the existing configuration. For example, by installing two supersonic separators instead of second and third stage Joule–Thomson valve + low temperature separator, at the optimal operating condition, the natural gas liquid recovery rate increased about 390%. The influence of the intermediate pressure ratio on the phase envelope diagram, exergy efficiency, dew point depression and natural gas liquid recovery rate was also investigated. By comparing the influence of intermediate pressure ratio and modifying the plant configuration on the objective functions, it was observed that the system performance can be further improved by modifying the plant configuration.

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Process Design of Hydrate-Membrane Coupled Separation for CO2 Capture from Flue Gas: Energy Efficiency Analysis and Optimization

Xu,

Lang,

Fan

et al. 2024

Lecture Notes in Civil Engineering

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On small-scale liquefaction of natural gas with supersonic separator: Energy and second law analyses

Cited by 23 publications

References 32 publications

Recent Developments in Natural Gas Flaring Reduction and Reformation to Energy-Efficient Fuels: A Review

Recent Developments in Natural Gas Flaring Reduction and Reformation to Energy-Efficient Fuels: A Review

A novel strategy for process optimization of a natural gas liquid recovery unit by replacing Joule–Thomson valve with supersonic separator

Process Design of Hydrate-Membrane Coupled Separation for CO2 Capture from Flue Gas: Energy Efficiency Analysis and Optimization

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