Dynamic measurements of hydrate based gas separation in cooled silica gel

Yang, Mingjun; Song, Yongchen; Jiang, Lanlan; Wang, Xiaojing; Liu, Weiguo; Zhao, Yuechao; Liu, Yu; Wang, Shanrong

doi:10.1016/j.jiec.2013.03.031

Cited by 24 publications

(7 citation statements)

References 36 publications

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“…Kang et al (2008) found that pores which are too small lead to inhibition of their effect on hydrate formation due to the decreased water activity in the pores. Hydrate blockage of the pores may reduce the contact of gas and liquid, leading to incomplete migration of the solution through the hydrates (Yang et al, 2013a). Increasing pore size can overcome this problem.…”

Section: Mechanical Methodsmentioning

confidence: 99%

Recent advances in gas hydrate-based CO2 capture

Dashti

Yew

Lou

2015

Journal of Natural Gas Science and Engineering

247

102

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a b s t r a c tHydrate-based CO 2 capture (HBCC) has received increasing attention, due to such advantages as the mild operating pressure and temperature, the ease of regeneration and its unique separation mechanism. This review paper is focused on the chemical additives and the mechanical methods that have been investigated to improve the CO 2 separation efficiency and energy consumption through HBCC technology. Detailed comparisons of the effects of various chemical additives and mechanical methods on gas consumption, operating conditions, hydrate induction time and CO 2 recovery are critically reviewed. The limitations and challenges of HBCC, in comparison with the conventional methods for CO 2 capture also are discussed.

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Section: Mechanical Methodsmentioning

confidence: 99%

Recent advances in gas hydrate-based CO2 capture

Dashti

Yew

Lou

2015

Journal of Natural Gas Science and Engineering

247

102

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“…Clearly, increased fluid volumes in an industrial-scale reactor would require power demands that may not be economically efficient for stirred tank reactors [54]. The use of silica gels offers a potential option to improve the gas-liquid mass transfer without the need for stirring [6,24,28,52]. Adeyemo et al [28] obtained increased water conversion rates and up to 45% water converted to hydrate after four hours by contacting flue gas and fuel gas mixtures with water dispersed in silica gel in a fixed bed column for CO 2 capture.…”

Section: Effect Of Reactor Sizementioning

confidence: 99%

“…More recently, there has been increased interest in the potential applications of gas-hydrate-related technology in the areas of gas separation [5][6][7][8][9][10][11], gas transportation and storage [12][13][14][15][16][17][18][19][20][21][22][23], CO 2 capture and sequestration [11,13,[17][18][19][20][21][22][23][24][25][26][27][28][29][30], and as a potential energy source [20,[31][32][33][34]. In the area of gas transportation and storage, gas hydrate technology offers simplicity and safer conditions.…”

Section: Introductionmentioning

confidence: 99%

Gas Hydrate Growth Kinetics: A Parametric Study

Meindinyo

Svartaas

2016

Energies

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Gas hydrate growth kinetics was studied at a pressure of 90 bars to investigate the effect of temperature, initial water content, stirring rate, and reactor size in stirred semi-batch autoclave reactors. The mixing energy during hydrate growth was estimated by logging the power consumed. The theoretical model by Garcia-Ochoa and Gomez for estimation of the mass transfer parameters in stirred tanks has been used to evaluate the dispersion parameters of the system. The mean bubble size, impeller power input per unit volume, and impeller Reynold's number/tip velocity were used for analyzing observed trends from the gas hydrate growth data. The growth behavior was analyzed based on the gas consumption and the growth rate per unit initial water content. The results showed that the growth rate strongly depended on the flow pattern in the cell, the gas-liquid mass transfer characteristics, and the mixing efficiency from stirring. Scale-up effects indicate that maintaining the growth rate per unit volume of reactants upon scale-up with geometric similarity does not depend only on gas dispersion in the liquid phase but may rather be a function of the specific thermal conductance, and heat and mass transfer limitations created by the limit to the degree of the liquid phase dispersion is batched and semi-batched stirred tank reactors.

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“…[18][19][20] CO 2 storage in marines ediments is ap ersistent ands afe method, [21][22][23][24] and most sites are favorable for CO 2 hydrate formation. [25][26][27][28][29] The new CO 2 hydrate layer works as al ow-permeability cap to preventC O 2 diffusion. [30] Am ethodh as been proposed to simultaneously obtain both CH 4 recovery and CO 2 storage, [29,[31][32][33] in which CH 4 is exploited by CO 2 injection into NGHs.S everal investigations are being performed to increase the safety,efficiency,and economy of this process.…”

Section: Introductionmentioning

confidence: 99%

“…[25][26][27][28][29] The new CO 2 hydrate layer works as al ow-permeability cap to preventC O 2 diffusion. [30] Am ethodh as been proposed to simultaneously obtain both CH 4 recovery and CO 2 storage, [29,[31][32][33] in which CH 4 is exploited by CO 2 injection into NGHs.S everal investigations are being performed to increase the safety,efficiency,and economy of this process. [34][35][36][37][38][39][40][41][42] Despite the fact that CO 2 -CH 4 exchangec an simultaneously achieve two goals,t he methodi ss till in development.…”

Section: Introductionmentioning

confidence: 99%

Hydrate Formation Characteristics during Carbon Dioxide Flow Through Depleted Methane Hydrate Deposits

et al. 2018

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Depleted methane hydrate (MH) reservoirs are potential sites for CO2 storage. Hydrate formation during the CO2 flow process in a dissociated MH sample was simulated to clarify the formation characteristics of CO2 hydrates and their effect on CO2 storage. Experiments included MH formation and dissociation, CO2 injection, water‐injection and CO2 hydrate dissociation, and liquid‐water distribution as monitored by magnetic resonance imaging (MRI). It was observed that the initial water saturation determined the hydrate saturation in the artificial sediment, and the depressurization range was the main factor influencing MH dissociation for the excess gas sample. Pressure is the key factor influencing hydrate formation during CO2 flow. An increase of the CO2 flow rate led to a decrease of both hydrate saturation and conversion of the injected CO2. The cumulative amount of injected water is not the key factor controlling CO2 hydrate formation, but it does determine the residual water saturation.

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Dynamic measurements of hydrate based gas separation in cooled silica gel

Cited by 24 publications

References 36 publications

Recent advances in gas hydrate-based CO2 capture

Recent advances in gas hydrate-based CO2 capture

Gas Hydrate Growth Kinetics: A Parametric Study

Hydrate Formation Characteristics during Carbon Dioxide Flow Through Depleted Methane Hydrate Deposits

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