Modelling and experimental validation of a fluidized bed based CO2 hydrate cold storage system

Zhou, Hongxia; Sera, I.E.E. de; Ferreira, C.A. Infante

doi:10.1016/j.apenergy.2015.08.092

Cited by 36 publications

(12 citation statements)

References 41 publications

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“…Gas hydrates are non‐stoichiometric compounds formed when hydrogen‐bonded cages composed of water molecules encapsulate guest gas molecules at certain temperature and pressure. Gas hydrates have widespread applications in desalination, cool storage, gas separation and storage and are commonly known for plugging pipe lines in the petroleum industry . The formation rate, particle size, and amount of hydrates formed are important factors when evaluating the effectiveness of hydrate desalination, separation, and storage.…”

Section: Introductionmentioning

confidence: 99%

A water droplet size distribution dependent modeling of hydrate formation in water/oil emulsion

Sun

Liu

et al. 2016

AIChE Journal

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Experimental data on chord length distributions and growth rate during methane hydrate formation in water‐in‐oil emulsions were obtained in a high pressure stirring reactor using focused beam reflectance measurement and particle video microscope. The experiments were carried out at 274.2 K for 10–30% water cuts and agitation rates ranging from 200 to 500 rpm initially at 7.72 MPa. Rapid growth was accompanied by gradually decrease in rate. Free water was observed to become depleted during rapid growth while some water remained encapsulated inside hydrate layers constituting a mass transfer barrier. The apparent kinetic constants of methane hydrate formation and free‐water fractions were determined using a newly developed kinetic model independent of the dissolution rate at the gas–oil interface. It was illustrated that continued growth depends on distribution and transfer of water in oil‐dominated systems. This perception accords with observations of hydrate film growth on suspended water droplet in oil and clarifies transfer limits in kinetics. © 2016 American Institute of Chemical Engineers AIChE J, 63: 1010–1023, 2017

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Section: Introductionmentioning

confidence: 99%

A water droplet size distribution dependent modeling of hydrate formation in water/oil emulsion

Sun

Liu

et al. 2016

AIChE Journal

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“…Their rheology [12,13], thermal properties [14,15], and phase-change kinetics [11,16,17] have been studied extensively. Apart from these characterization studies, performance analyses of secondary refrigeration systems using hydrate slurries are still scarce [18][19][20][21]. They may invoke various features as efficiency…”

Section: Mmentioning

confidence: 99%

Energy analysis of two-phase secondary refrigeration in steady-state operation, part 1: Global optimization and leading parameter

Pons

Hoang²,

Dufour

et al. 2018

Energy

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A great deal of attention is paid to secondary refrigeration as a means of reducing excessively high emissions of refrigerants (most of which have a potent greenhouse effect) due to leaks in large cooling units. Among the environmentally friendly fluids that can be used in secondary circuits for transporting and storing cold, hydrate slurries offer the advantage of significant latent heats of fusion associated with good fluidity. Research programs have focused attention on hydrate systems, including CO 2 , TBPB (tetra-n-butyl-phosphonium-bromide), and mixed CO 2-TBPB hydrates. In addition to feasibility concerns, energy efficiency is also a crucial concern requiring an objective analysis of the improvements likely to result from these new materials. An impartial framework was thus constructed based on the principles of optimization methods. This approach was applied to these three hydrate slurries as well as to the well-known ice slurry for comparison purposes. A numerical model of secondary

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“…Formation of gas hydrates in oil and gas pipelines and processing equipment is something that the petroleum industry is most concerned about since it can lead to flow blockage and severe economic loss. Clathrate hydrate slurries composed of hydrates flowing in suspension in solutions are recently been proposed as (pumpable) phase change materials (Zhou et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…A fluidized bed generator, similar to the type which has been patented by Waycuilis and York (United States patent 2002, #6350928), has been used to produce CO 2 hydrate slurry continuously as shown by Zhou et al (2015). However, the construction of such a system with a fluidized bed heat exchanger requires a large investment which is not cost-effective for industry.…”

Section: Introductionmentioning

confidence: 99%

Effect of type-III Anti-Freeze Proteins (AFPs) on CO2 hydrate formation rate

Zhou

Ferreira

2017

Chemical Engineering Science

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Modelling and experimental validation of a fluidized bed based CO2 hydrate cold storage system

Cited by 36 publications

References 41 publications

A water droplet size distribution dependent modeling of hydrate formation in water/oil emulsion

A water droplet size distribution dependent modeling of hydrate formation in water/oil emulsion

Energy analysis of two-phase secondary refrigeration in steady-state operation, part 1: Global optimization and leading parameter

Effect of type-III Anti-Freeze Proteins (AFPs) on CO2 hydrate formation rate

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