Experimental and computational investigation of hydrophilic monomeric substances as novel CO2 hydrate inhibitors and potential synergists

Go, Woojin; Yun, Soyoung; Lee, Dongyoung; Seo, Yongwon

doi:10.1016/j.energy.2022.123136

Cited by 14 publications

(6 citation statements)

References 52 publications

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“…When a KHI and a THI/synergist were used in combination, the peak values of C–O RDF decreased, indicating an increase in the distance between methane and water molecules, and the peak values of C–C RDF increased, indicating a decrease in the distance between methane–methane molecules and the methane-KHI carbon chains. Similar results have been reported by Wang et al and Go et al . based on MSD and RDF calculations.…”

Section: Synergy In Hydrate Inhibitionsupporting

confidence: 92%

“…Go et al conducted an experimental and molecular dynamics simulation study on the synergistic methane hydrate inhibition between urea, acetamide, and glycine. A similar study with synergistic hydrate inhibition was repeated for CO 2 hydrates …”

Section: Synergy In Hydrate Inhibitionmentioning

confidence: 99%

“…A similar study with synergistic hydrate inhibition was repeated for CO 2 hydrates. 55 Similarly, Cheng et al 56 investigated the synergistic hydrate inhibition between PVP and imidazole reagents (2-methyl imidazole, 2-ethyl imidazole, 2-ethyl-4-methyl imidazole & 2propyl imidazole). Wang et al 57 conducted a molecular dynamics simulation study on the synergy between NaCl and glycine.…”

Section: Molecular Simulation Literature Reviewmentioning

confidence: 99%

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Kinetic Hydrate Inhibition by Lambda-Carrageenan and Its Synergistic Compositions with Ethylene Glycol, 4-Methyl-1-Pentanol, Polyvinylpyrrolidone, and Polyvinylcaprolactam

Singh,

Suri,

Chandravanshi

2023

Energy Fuels

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For the oil and gas industry to function smoothly, it is essential to have a continuous flow of oil and gas in pipelines without interruptions caused by hydrate blockages. Kinetic hydrate inhibitors (KHIs) are becoming popular as they offer safe and effective hydrate inhibition at low dosages (0.5–2 wt % of the water content). The current commercial KHIs are synthetic and poorly biodegradable, which causes disposal concerns for environmental regulators. The lack of natural, sustainable, and biodegradable KHIs opens the scope to develop natural and biodegradable KHI alternatives. This study investigates the use of a natural and biodegradable polysaccharide, lambda carrageenan (λ-crgn), as a standalone KHI and its combinations with biodegradable solvents mono ethylene glycol and 4-methyl-1-pentanol and commercial KHI polymers (PVP and PVCap) for improved biodegradability and performance. λ-crgn is an environmentally friendly polysaccharide derived and cultivated from red seaweeds. Two variants of λ-crgn, one with a smaller mean size and a lower viscosity (LV) and one with a larger mean size and a higher viscosity (HV), are tested for hydrate inhibition. The lower molecular size/viscosity variant, λ-crgn (LV), showed similar induction times and lower hydrate growth rates compared to PVP when used as a standalone KHI. However, the high-viscosity variant did not perform as well as PVP. λ-crgn (HV or LV), when blended with commercial KHIs (PVP and PVCap), synergized and led to an increase in induction times by up to 63% and a decrease in the hydrate growth rates by 73% compared to when only the commercial KHIs were used at the exact total dosages. When λ-crgn (HV or LV) was blended with solvents 4-methyl-1-pentanol or MEG, again a significant synergy was observed, leading to the hydrate inhibition performance that was found to be at par or better than the commercial KHIs (PVP and PVCap) at the exact total dosages.

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Section: Synergy In Hydrate Inhibitionsupporting

confidence: 92%

Section: Synergy In Hydrate Inhibitionmentioning

confidence: 99%

Section: Molecular Simulation Literature Reviewmentioning

confidence: 99%

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Kinetic Hydrate Inhibition by Lambda-Carrageenan and Its Synergistic Compositions with Ethylene Glycol, 4-Methyl-1-Pentanol, Polyvinylpyrrolidone, and Polyvinylcaprolactam

Singh,

Suri,

Chandravanshi

2023

Energy Fuels

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“…At this level, there is almost no difference in the inhibition effect between methanol and ethylene glycol, although the peak position is further back in the localized region. Thus, the inhibitor dosage affects both the amount and location of hydrate formation in the pipeline …”

Section: Resultsmentioning

confidence: 99%

“…Thus, the inhibitor dosage affects both the amount and location of hydrate formation in the pipeline. 29 Increasing the inhibitor concentration further (0.25%) slightly enhances the inhibition effect, with methanol and ethylene glycol still exhibiting similar performance. However, when the inhibitor concentration reaches 0.35%, a substantial increase in inhibition becomes apparent, and a significant difference in inhibition between methanol and ethylene glycol emerges.…”

Section: Effect Of the Inhibitorsmentioning

confidence: 97%

Behavior of Gas Hydrate Formation in Long-Distance Pipelines for CO₂ Transportation

Gao,

Jiang,

et al. 2023

Energy Fuels

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To address the escalating global carbon emissions and achieve the goal of carbon neutrality, the utilization of carbon capture, utilization, and storage (CCUS) technology is of crucial importance: with specific focus is the long-distance and large-volume CO2 transportation via pipelines. In this paper, we employ the OLGA software to construct a pipeline model that simulates and calculates hydrate formation in pipelines under various conditions, including extensive distances and complex operational scenarios. Initially, the impact of water content on hydrate generation in gas pipelines was analyzed, revealing an inverse relationship between the total amount of hydrate and the water content within a specific range. Furthermore, it was indicated that the presence of N2 in the flue gas significantly enhances the overall hydrate amount, which gradually decreases with an increase in the N2 percentage. The substantial effect of high pressure on promoting hydrate generation from a mixture of N2 and CO2 gases was investigated. In addition, a concise comparative analysis was conducted to identify the optimal inhibitor delivery scheme suitable for the pipeline configuration, considering both inhibition effectiveness and economic feasibility. The results could be of help revealing the performance of CO2 hydrate formation in the pipelines and proposing an inhibition strategy for an effective CO2 transportation.

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Experimental and computational insights into the inhibition of CO2 hydrate formation using biodegradable oligopeptides and their significance in CO2 transport and storage

Go,

Mun,

Seo

2024

Applied Energy

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Experimental and computational investigation of hydrophilic monomeric substances as novel CO2 hydrate inhibitors and potential synergists

Cited by 14 publications

References 52 publications

Kinetic Hydrate Inhibition by Lambda-Carrageenan and Its Synergistic Compositions with Ethylene Glycol, 4-Methyl-1-Pentanol, Polyvinylpyrrolidone, and Polyvinylcaprolactam

Kinetic Hydrate Inhibition by Lambda-Carrageenan and Its Synergistic Compositions with Ethylene Glycol, 4-Methyl-1-Pentanol, Polyvinylpyrrolidone, and Polyvinylcaprolactam

Behavior of Gas Hydrate Formation in Long-Distance Pipelines for CO₂ Transportation

Experimental and computational insights into the inhibition of CO2 hydrate formation using biodegradable oligopeptides and their significance in CO2 transport and storage

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Experimental and computational investigation of hydrophilic monomeric substances as novel CO2 hydrate inhibitors and potential synergists

Cited by 14 publications

References 52 publications

Kinetic Hydrate Inhibition by Lambda-Carrageenan and Its Synergistic Compositions with Ethylene Glycol, 4-Methyl-1-Pentanol, Polyvinylpyrrolidone, and Polyvinylcaprolactam

Kinetic Hydrate Inhibition by Lambda-Carrageenan and Its Synergistic Compositions with Ethylene Glycol, 4-Methyl-1-Pentanol, Polyvinylpyrrolidone, and Polyvinylcaprolactam

Behavior of Gas Hydrate Formation in Long-Distance Pipelines for CO2 Transportation

Experimental and computational insights into the inhibition of CO2 hydrate formation using biodegradable oligopeptides and their significance in CO2 transport and storage

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Product

Resources

About

Behavior of Gas Hydrate Formation in Long-Distance Pipelines for CO₂ Transportation