Experimental Investigation of Effect on Hydrate Formation in Spray Reactor

Zhao, Junfang; Tian, Yaqin; Zhao, Yang; Cheng, Weili

doi:10.1155/2015/261473

Cited by 7 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mechanical strengthening is a method of promoting the reduction of the reaction time by increasing the gas–liquid contact area through mechanical means. It mainly includes several methods such as stirring, spraying, , and bubbling . The stirring method is currently the most widely used and mature method for the formation of gas hydrates.…”

Section: Introductionmentioning

confidence: 99%

Promoting Effect of Organic–Inorganic Self-Assembled Composites on Methane Hydrate

Sun,

Luo,

Guo

2024

Energy Fuels

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Promoting Effect of Organic–Inorganic Self-Assembled Composites on Methane Hydrate

Sun,

Luo,

Guo

2024

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…The traditional hydration enhancement methods can be categorized into physical and chemical methods. The physical methods mainly include spraying (Zhao et al, 2015), mechanical stirring (Meleshkin and Marasanov, 2021), bubbling (Cai et al, 2017), external magnetic field (English and Allen, 2019), electric field (Pahlavanzadeh et al, 2020), ultrasonic field (Park and Kim, 2013), and other methods. The chemical methods mainly encompass the addition of kinetic enhancers such as sodium dodecyl sulfate (SDS) (Zhang et al, 2023) and amino acids (Gaikwad et al, 2021;Yodpetch et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Influence of micro-particles on gas hydrate formation kinetics: Potential application to methane storage and transportation

Wu,

Tang,

Zhao

et al. 2023

Adv. Geo-Energy Res.

View full text Add to dashboard Cite

Methane hydration is a safe, stable and environmentally friendly technology to bind and utilize excess coalbed methane gas. However, a limiting factor of the commercial application of coalbed methane hydration technology is the sluggish hydration reaction kinetics of methane hydrate formation, which needs to be improved. In this work, different micro-particle suspensions are prepared from an initial solution containing gellan gum and L-tryptophan, along with varying mass fractions of NiMnGa, Cu and carboxylated multi-walled carbon nanotubes, and their influence on the reaction kinetics in methane hydrate formation is examined. The results show that the formation of methane hydrate is enhanced by these micro-particles to varying degrees. Micro-particles show a synergistic solubilization effect with L-tryptophan and gellan gum at 6.2 MPa. The induction times of 1 wt.% NiMnGa system and 1 wt.% Cu system are the shortest. The 2 wt.% NiMnGa system has a pronounced impact on methane gas consumption, and the average gas consumption rates of the 0.1 wt.% Cu system and 1 wt.% NiMnGa system are faster. However, as the concentration of Cu micro-particles increases, both gas consumption and the average generation rate exhibits a linear decrease. This work offers valuable recommendations for choosing the experimental settings, micro-particle types and concentrations. We also lay the groundwork for the practical and sustainable application of coalbed methane storage and transportation technology employing the hydrate approach.

show abstract

“… 38 , 39 The spray reactor could enlarge the gas–liquid contact area and showed a positive impact on enhancing the hydrate formation rate and gas storage capacity. 40 , 41 Besides, a new gas–liquid contact pattern was used in the scale-up bubbling reactor, which was also introduced to capture methane from CBM. 42 The experimental results proved that the hydrate-based gas separation technology could be easily carried out on a pilot scale.…”

Section: Introductionmentioning

confidence: 99%

“…They produced a water-in-oil (W/O) emulsion to improve methane separation by adding mineral oil, sorbitan monooleate (Span 80), and cyclopentane . In addition, a superabsorbent polymer and graphite nanofluid were adopted to increase the methane content from CBM. , The spray reactor could enlarge the gas–liquid contact area and showed a positive impact on enhancing the hydrate formation rate and gas storage capacity. , Besides, a new gas–liquid contact pattern was used in the scale-up bubbling reactor, which was also introduced to capture methane from CBM . The experimental results proved that the hydrate-based gas separation technology could be easily carried out on a pilot scale.…”

Section: Introductionmentioning

confidence: 99%

Microscopic Insights into the Effect of the Initial Gas–Liquid Interface on Hydrate Formation by In-Situ Raman in the System of Coalbed Methane and Tetrahydrofuran

Cai

et al. 2021

ACS Omega

View full text Add to dashboard Cite

The serious issues of energy shortage and greenhouse gas emission have led to the development of coalbed methane (CBM) with new commercial ramifications. A hydrate-based gas separation technology is introduced to recover methane from CBM. However, the mechanism of hydrate nucleation needs to be clear for enhancing the hydrate formation rate and gas recovery efficiency. In this work, we studied, by means of in-situ Raman spectroscopy, the microscopic characterizations of hydrates forming in/around the initial gas–liquid interface in the case of CBM and tetrahydrofuran (THF). It is found that the hydrates accumulate as a film with horizontal crevices in the initial gas–liquid interface. These crevices prevent the hydrate film from hindering gas–liquid contact and limiting hydrate formation. Raman spectroscopy results illustrate that the initial gas–liquid interface shows a positive impact on water aggregation, and that the holding gas molecules stay stably with the water molecules. Nitrogen molecules encage into the cavities of THF hydrates along with methane molecules. For the interface and hydrate layer, water aggregation is evaluated by the Raman intensity ratio of hydrogen-bonded water (BW) and free water (FW) without any hydrogen bonds, abbreviated as I BW / I FW . A value of I BW / I FW higher than 0.85 can symbolize the occurrence of hydrate nucleation in the interface and help assess the hydrate formation.

show abstract

Experimental Investigation of Effect on Hydrate Formation in Spray Reactor

Cited by 7 publications

References 16 publications

Promoting Effect of Organic–Inorganic Self-Assembled Composites on Methane Hydrate

Promoting Effect of Organic–Inorganic Self-Assembled Composites on Methane Hydrate

Influence of micro-particles on gas hydrate formation kinetics: Potential application to methane storage and transportation

Microscopic Insights into the Effect of the Initial Gas–Liquid Interface on Hydrate Formation by In-Situ Raman in the System of Coalbed Methane and Tetrahydrofuran

Contact Info

Product

Resources

About