Performance of mixture of ethylene glycol and glycine in inhibiting methane hydrate formation

Zhang, Long; Zhou, Xuebing; He, Yong; Li, Dongliang; Liang, Deqing

doi:10.1016/j.jngse.2018.05.034

Cited by 43 publications

(18 citation statements)

References 47 publications

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“…[332] As a molecule involved in forming supramolecular complexes with water and hydrocarbons, glycine can be used to prevent the formation of gas hydrates, what has enormous importance for preventing blocking of gas pipes. [333][334][335][336] Interacting with the outer and inner surfaces, self-assembling at the surfaces, and penetrating into the bulk of inorganic host structures it can produce new materials for various applications from semiconductors to biocoatings. [337][338][339][340][341][342] In particular, one can fine-tune the energy gap in semiconducting materials by inducing lattice strain when amino acids, including also glycine, are incorporated into the host structure.…”

Section: Glycine and Its Ability To Form Solid Complexes With Other C...mentioning

confidence: 99%

Glycine: The Gift that Keeps on Giving

Boldyreva

2021

Israel Journal of Chemistry

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Glycine is a small molecule. It cannot change its conformation and is achiral. Despite the apparent simplicity, glycine shows endless diversity in its behavior over many phenomena. It was the first amino acid for which polymorphism was reported, first on crystallization and then on hydrostatic compression. The polymorphs differ in their physical properties and their biological activity. Glycine clusters persist in solution, leading to "solution memory". Phenomena at interfaces are critically important for crystal growth, dissolution, and for physical properties, which can be at times unexpected, like polarity in centrosymmetric αpolymorph. It is a great pleasure to remind of these remarkable phenomena in a special issue honoring professors Meir Lahav and Leslie Leiserowitz, who pioneered the study of the behavior of this unique molecule in many respects, and showed how complex and non-trivial phenomena can be at interfaces: between phases and between research fields.

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Section: Glycine and Its Ability To Form Solid Complexes With Other C...mentioning

confidence: 99%

Glycine: The Gift that Keeps on Giving

Boldyreva

2021

Israel Journal of Chemistry

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“…Among alcohols and polyols; methanol, ethanol, and monoethylene glycol are the most commonly used in the industry. However, the required dosage of these alcohols or polyols to mitigate the hydrate formation is high, up to 40–60 wt %, which ultimately increases the operational cost. , …”

Section: Introductionmentioning

confidence: 99%

“…However, the required dosage of these alcohols or polyols to mitigate the hydrate formation is high, up to 40−60 wt %, which ultimately increases the operational cost. 14,15 Electrolytes are inexpensive and easily available thermodynamic hydrate inhibitors. The produced oil and gas from subsea wells often contain highly saline water, which generally inhibits hydrate formation.…”

Section: Introductionmentioning

confidence: 99%

Phase Equilibrium of Methane Hydrates in the Presence of MgBr₂, CaBr₂, and ZnBr₂ Aqueous Solutions

Bhawangirkar

Sangwai

2021

J. Chem. Eng. Data

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Hydrate formation in natural gas transportation pipelines and during completion and workover operations is considered to be a serious issue. CaBr 2 and ZnBr 2 salts are widely used to design high-density completion fluids for completion of oil and gas wells; however, information on the hydrate phase equilibria in the presence of these salts is missing. In this study, a threephase liquid water−hydrate−vapor (L-H-V) equilibrium conditions for methane hydrate in aqueous solutions of MgBr 2 , CaBr 2 , and ZnBr 2 at 0.1, 0.25, 0.5, 0.75, 1, 3, 5, 10, and 15 wt % in the temperature and pressure range of 276.5−285.4 K and 3.65−9.56 MPa have been reported using the isochoric pressure search method. A total of 129 phase equilibrium experiments have been performed. At low concentrations of the salt, that is, 0.1−0.75 wt %, the thermodynamic inhibition was found to be low and close to the methane hydrate equilibrium conditions in pure water. The inhibition effect is found to increase beyond 1 wt %, becomes significant after 3 wt % salt concentration, and is found to increase with an increase in the salt concentration. In accordance with the hydrated radius and ionic weight, the inhibition effect of salts on the methane hydrate phase equilibria is in the order of MgBr 2 > CaBr 2 > ZnBr 2 . The heat of dissociation (evaluated using the Clausius−Clapeyron equation) for methane hydrates in aqueous salt systems is found to be in the order of ZnBr 2 > CaBr 2 > MgBr 2 . This study will be useful to design efficient completion fluids for completion and workover operations for onshore and offshore oil and gas production operations.

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“…Entretanto, considerando a dupla ação que podem chegar a desempenhar os aminoácidos, a glicina, alanina, prolina, serina, valina, treonina, asparagina e fenilalanina tem sido testados como inibidores termodinâmicos e cinéticos na formação de hidratos de CH 4 (MADDAH et al, 2018;the methane hydrate growth kinetics is investigated by molecular dynamics simulation (MD BAVOH et al, 2018 (b);LONG et al, 2018).…”

Section: Uso De Promotores Para a Produção De Hidratos De Gásunclassified

Ajuste De Modelos Hipsométricos Para Azadirachta Indica A. Juss Em Resposta Ao Método De Cultivo No Nordeste Brasileiro

Araújo¹,

Silva²,

Silva³

et al. 2019

A Preservação Do Meio Ambiente E O Desenvolvimento Sustentável

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Performance of mixture of ethylene glycol and glycine in inhibiting methane hydrate formation

Cited by 43 publications

References 47 publications

Glycine: The Gift that Keeps on Giving

Glycine: The Gift that Keeps on Giving

Phase Equilibrium of Methane Hydrates in the Presence of MgBr₂, CaBr₂, and ZnBr₂ Aqueous Solutions

Ajuste De Modelos Hipsométricos Para Azadirachta Indica A. Juss Em Resposta Ao Método De Cultivo No Nordeste Brasileiro

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Performance of mixture of ethylene glycol and glycine in inhibiting methane hydrate formation

Cited by 43 publications

References 47 publications

Glycine: The Gift that Keeps on Giving

Glycine: The Gift that Keeps on Giving

Phase Equilibrium of Methane Hydrates in the Presence of MgBr2, CaBr2, and ZnBr2 Aqueous Solutions

Ajuste De Modelos Hipsométricos Para Azadirachta Indica A. Juss Em Resposta Ao Método De Cultivo No Nordeste Brasileiro

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Phase Equilibrium of Methane Hydrates in the Presence of MgBr₂, CaBr₂, and ZnBr₂ Aqueous Solutions