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Stability and cell distortion of sI clathrate hydrates of methane and carbon dioxide: A 2D lattice-gas model study
(Elsevier, 2015-09)
Thermodynamic models of the stability of clathrate hydrates are important for different applications such as the storage, separation and transport of gases. The development of improved models relies on a better understanding ...
Lattice-gas Monte Carlo study of sI clathrate hydrates of ethylene: Stability analysis and cell distortion
(Elsevier Science, 2020-10-15)
In this paper, a two-dimensional lattice-gas model is applied to study the stability and lattice distortion of sI clathrate hydrates of ethylene. Two levels of approximation are considered for the lateral interactions ...
Electrical impedance measurements of clathrate hydrates
(Universidade Tecnológica Federal do ParanáCuritibaPrograma de Pós-Graduação em Engenharia Elétrica e Informática Industrial, 2015-05-28)
Among the challenges in the oil and gas industry for hydrocarbon production, a featured area in recent years is known as flow assurance, which involves to guarantee the continuously stream of fluids (oil or gas) through ...
Análise do cenário de inibição dos hidratos de gás natural com ênfase na modelagem de inibidores termodinâmicos
(Universidade Tecnológica Federal do ParanáFrancisco BeltraoBrasilEngenharia QuímicaUTFPR, 2018-06-15)
In the area of natural gas exploration and production, there are several problems that companies face in extracting and transporting gas from the extraction site to their separation facilities. During deep and ultra deep ...
Instrumentação ultrassônica para caracterização do processo de formação de hidrato
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Elétrica e Informática IndustrialUTFPR, 2016-04-13)
Currently, among the biggest challenges in oil industry are the hydrates. Hydrates, also known as clathrates, are crystalline structures formed by water connected by hydrogen bonds that are stabilized by a guest molecule. ...
Desenvolvimento de um flash multifásico na presença de hidratos
(Universidade Tecnológica Federal do ParanáCuritibaBrasilMestrado em Engenharia Mecânica e de MateriaisUTFPR, 2017-09-13)
Gas hydrates are crystalline compounds formed by hydrogen-bonded water frameworks. Hydrates are stabilized by non-polar molecules of low molecular diameters (guest molecules), which are occluded in cavities (host lattice) ...
Effect of hydrogen-to-methane concentration ratio on the phase equilibria of quaternary hydrate systems
(American Chemical Society, 2015-02)
Clathrate hydrates of hydrogen are of specific interest due to their potential ability to store molecular hydrogen. In particular, structure H (sH) hydrate has a higher theoretical storage capacity in comparison with the ...
Modelo de predição para o crescimento de hidratos em paredes de tubulações
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Mecânica e de MateriaisUTFPR, 2016-03-11)
The study of the clathrate-hydrate formation processes in pipelines is very important to the oil and gas industry because these structures can stop production and it represents a safety risk due to the pressure build-up ...
Formation of natural gas hydrates in marine sediments 1. Conceptual model of gas hydrate growth conditioned by host sediment properties
(Journal of Geophysical Research, 1999)
The stabilityo f submarineg ash ydratesis largelyd ictatedb y pressurea ndt emperature,
gasc ompositiona,n dp orew aters alinity.H owever,t he physicapl ropertiesa nds urfacec hemistry
of deepm arines edimentms ay alsoa ...
Modelagem termodinâmica do equilíbrio de formação de hidratos para sistemas contendo gases ácidos
(Universidade Tecnológica Federal do ParanáCuritibaBrasilGraduação em Engenharia MecânicaUTFPR, 2018-07-04)
In this study, the van der Waals and Platteeuw model was coupled with Cubic Plus Association (CPA) equation of state (EoS) for equilibrium calculations in systems with clathrate hydrates, focusing on systems containing ...