Supersonic separation in onshore natural gas dew point plant

Machado, Priscilla B.; Monteiro, Juliana Garcia Moretz‐Sohn; Medeiros, José Luiz de; Epsom, Hugh; Araújo, Ofélia de Queiroz Fernandes

doi:10.1016/j.jngse.2012.03.001

Cited by 89 publications

(31 citation statements)

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“…That makes the modeling to be complex considering the high compressibility and non-ideality of the gas to be treated. Based on the supersonic and compressible feature of the gas, the recommended solver to be implemented is Density-Based [14][15][16]. 2) Turbulence: One of the most important features of the flow in the system is the highly turbulent and circular pattern described by the gas, and the condensed phases generated.…”

Section: ) Compressible Fluid Mechanicsmentioning

confidence: 99%

“…For the process that takes place in the NGL supersonic separation equipment, the pressure typically achieves values of 3 MPa (500 psi) and low temperatures of 258 K (5 °F) [12,16], at this condition, the natural gas has a nonideal behavior, that makes necessary the implementation of an Equation of State (EOS) which allows to accurately estimate the PVT properties of the Gas in all the flow simulation domain at the real operation conditions [4].…”

Section: Co=45=δt*450 Ms-1/1x10-4 M (3)mentioning

confidence: 99%

“…During the processing across the equipment, the gas is condensed in to two liquid phases, water and hydrocarbon liquid phase, these two phases are present in a less proportion than gas phase, about 2% in volume. From the two liquid phases generated during the process, a solid phase is formed, this phase consists of hydrocarbon hydrates [11,16]. This liquid phase has even lower proportion than the liquids in the system, no more than 0.5% in volume.…”

Section: ) Multiphase Modelingmentioning

confidence: 99%

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NGL supersonic separator: modeling, improvement, and validation and adjustment of k-epsilon RNG modified for swirl flow turbulence model

Guevara-Luna

Cerón

2017

Rev. Fac. Ing. Univ. Antioquia

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ABSTRACT:The processing of natural gas requires the implementation of new technologies in a context of increasing demand around the world. The natural gas liquids (NGL) separation using supersonic devices is a novel and efficient way to reduce volume of installed equipment and operation costs using the effects of highly turbulent and circular flows. This research implemented Computational Fluid Dynamics (CFD) modeling to improve the efficiency of typical NGL recovery process using the supersonic approach. In this research, a novel turbulence modeling approach was implemented aiming to minimize the processing time, and the results obtained were validated with experimental data available. This research is based on the model called k-epsilon RNG modified for swirl flow, this model has not been used and validated previously in highly compressible, turbulent and circular flow systems. The efficiency of the process was improved by 11% in comparison to the efficiency reported in past studies, and the processing time for the modeling was reduced by 40% with the proposed and adjusted turbulence approach. During the validation of the model k-epsilon RNG modified for swirl flow the swirl factor, part of the turbulence model, was adjusted to an optimum value for compressible, turbulent and circular flow systems involved in supersonic NGL separation process, allowing accurate results to be obtained with lower processing time than with other typical and common approaches as RSM and LES.RESUMEN: El procesamiento de gas natural requiere la aplicación de nuevas tecnologías en un contexto de aumento de la demanda en todo el mundo. La separación de líquidos de gas natural (LGN) utilizando dispositivos supersónicos, es una novedosa y eficiente manera de reducir el volumen de equipos instalados y costos, utilizando los efectos de los flujos circulares altamente turbulentos. En esta investigación se implementa dinámica computacional de fluidos (CFD) para mejorar la eficiencia del proceso típico de recuperación de LGN utilizando el enfoque supersónico. También se puso en práctica un nuevo enfoque de modelado de la turbulencia con el objetivo de minimizar el tiempo de procesamiento, los resultados obtenidos fueron validados con datos experimentales disponibles. Esta investigación se basa en el modelo llamado k-épsilon RNG modificado para flujo remolino; este modelo no se ha utilizado ni validado antes en sistemas de flujo altamente compresibles, turbulentos y circulares. La eficiencia del proceso fue mejorada en un 11% en comparación con la eficiencia reportada en investigaciones previas, y el tiempo de procesamiento para el modelado redujo 40% con el enfoque turbulencia propuesto y ajustado. Durante la validación del modelo k-épsilon RNG modificado para flujo remolino el factor de remolino, parte del modelo de turbulencia, se ajustó a un valor óptimo para sistemas de flujo compresibles, turbulentos y circulares que participan en procesos de separación de NGL supersónico, lo que permite obtener resultados más precisos y con un menor ti...

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Section: ) Compressible Fluid Mechanicsmentioning

confidence: 99%

Section: Co=45=δt*450 Ms-1/1x10-4 M (3)mentioning

confidence: 99%

Section: ) Multiphase Modelingmentioning

confidence: 99%

See 1 more Smart Citation

NGL supersonic separator: modeling, improvement, and validation and adjustment of k-epsilon RNG modified for swirl flow turbulence model

Guevara-Luna

Cerón

2017

Rev. Fac. Ing. Univ. Antioquia

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“…Machado [72] compared the economics of onshore dew pointing systems using Twister versus triethylene glycol (TEG) and Joule-Thompson low temperature separation (JT/LTS) technologies. The material and energy balance in this analysis is performed by UniSIM, Equipment sizing by Campbell's method [73], and CAPEX and OPEX estimation by Turton's method [74].…”

Section: Twister Bvmentioning

confidence: 99%

Supersonic gas separators: Review of latest developments

Haghighi

Hawboldt

Abdi

2015

Journal of Natural Gas Science and Engineering

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“…In another study, a procedure was developed to predict the separation capability of water vapor and higher hydrocarbons from natural gas in a supersonic separator (Malyshkina, 2010). A supersonic separator was compared to a Joule-Thomson valve with TEG and demonstrated the high economic performance and natural gas liquids recovery of a supersonic separator (Machado et al, 2012). The generalized radial basis function artificial neural networks were used to optimize the geometry of a supersonic separator (Mahmoodzadeh and Shahsavand, 2013).…”

Section: Introductionmentioning

confidence: 99%