Kinetics of methane + hydrogen sulfide clathrate hydrate formation in the presence/absence of poly N-vinyl pyrrolidone (PVP) and L-tyrosine: Experimental study and modeling of the induction time

Aghajanloo, Mahnaz; Ehsani, Mohammad Reza; Taheri, Zahra; Behbahani, Taraneh Jafari; Mohammadi, Amir H.; Taheri, Mahbobeh  Mohammad

doi:10.1016/j.ces.2021.117384

Cited by 6 publications

(2 citation statements)

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“…Furthermore, very small concentrations of PVP are required to efficiently inhibit hydrates. Aghajanloo, et al [90] investigated the inhibition effect of varying concentrations (<2 wt%) of Poly N-vinyl pyrrolidone (PVP) and L-Tyrosine on the induction time of methane + hydrogen sulfide hydrate. The results of the study showed that, at low concentrations of Poly N-vinyl pyrrolidone (PVP) and L-Tyrosine, the induction time increased and a significant dissociation rate of the hydrate occurred.…”

Section: Polymeric Compounds As Khismentioning

confidence: 99%

“…The results of the study showed that, at low concentrations of Poly N-vinyl pyrrolidone (PVP) and L-Tyrosine, the induction time increased and a significant dissociation rate of the hydrate occurred. Thus, Poly N-vinyl pyrrolidone (PVP) and L-Tyrosine are promising KHIs that can effectively dissociate hydrates [90]. Zhao, et al [91] studied the inhibition effect of PVP and NaCl on hydrates using molecular dynamics techniques.…”

Section: Polymeric Compounds As Khismentioning

confidence: 99%

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Towards Gas Hydrate-Free Pipelines: A Comprehensive Review of Gas Hydrate Inhibition Techniques

et al. 2022

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Gas hydrate blockage is a major issue that the production and transportation processes in the oil/gas industry faces. The formation of gas hydrates in pipelines results in significant financial losses and serious safety risks. To tackle the flow assurance issues caused by gas hydrate formation in the pipelines, some physical methods and chemical inhibitors are applied by the oil/gas industry. The physical techniques involve subjecting the gas hydrates to thermal heating and depressurization. The alternative method, on the other hand, relies on injecting chemical inhibitors into the pipelines, which affects gas hydrate formation. Chemical inhibitors are classified into high dosage hydrate inhibitors (thermodynamic hydrate inhibitors (THI)) and low dosage hydrate inhibitors (kinetic hydrate inhibitors (KHI) and anti-agglomerates (AAs)). Each chemical inhibitor affects the gas hydrate from a different perspective. The use of physical techniques (thermal heating and depressurization) to inhibit hydrate formation is studied briefly in this review paper. Furthermore, the application of various THIs (alcohols and electrolytes), KHIs (polymeric compounds), and dual function hydrate inhibitors (amino acids, ionic liquids, and nanoparticles) are discussed thoroughly in this study. This review paper aims to provide a complete and comprehensive outlook on the fundamental principles of gas hydrates, and the recent mitigation techniques used by the oil/gas industry to tackle the gas hydrate formation issue. It hopes to provide the chemical engineering platform with ultimate and effective techniques for gas hydrate inhibition.

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Section: Polymeric Compounds As Khismentioning

confidence: 99%

Section: Polymeric Compounds As Khismentioning

confidence: 99%