Micro fly-ash particles stabilized Pickering foams and its combustion-retardant characteristics

Qin, Botao; Jia, Yuwei; Lü, Yi; Li, Yong; Wang, Deming; Chen, Changxin

doi:10.1016/j.fuel.2015.03.078

Cited by 74 publications

(24 citation statements)

References 37 publications

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“…Concentration of solid particles in liquid phase, their wettability, size and shape are critical parameters affecting bulk foam stability [28][29][30][31][32][33][34][35][36][37][38][39]. Concentration of solid particles defines the quantity of particle association in foam lamellae and at the plateau borders, which is a key factor for apparent viscosity enhancement of bulk foam [38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Experimental study on stability and rheological properties of aqueous foam in the presence of reservoir natural solid particles

Rafati

Haddad

Hamidi

2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Gas injection and especially CO2 flooding has been applied in many oil reservoirs globally to increase oil recovery factor in addition to its environmental friendly aspects. However, difference between fluid viscosities and densities, can cause interface instability where gas override and fingering may expedite gas breakthrough. Different types of foam have been proposed to improve interface stability. Yet, a major uncertainty is interaction of foam with natural reservoir particles which may improve or downgrade the performance and stability of foam. In this study we examined foam stability through solid-fluids interactions between solid particles of hydrocarbon reservoirs and aqueous foam. We tested five common reservoir particles of calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate and iron oxide with different surfactant and particle concentrations. It is found that stability of foam in the presence solid particles is a function of density, shape, size, and wettability of particles where monolayer, bilayer of network or particles stabilise foam lamella or rupture foam structure. Results show that solid particles of calcium carbonate, barium sulfate and strontium sulfate enhance the thermodynamic stability of foam. This is due to the distribution of semihydrophilic solid particles, which form mono-and multi-layers of particle chains in foam lamellae and plateau borders. On the other hand, solid particles of iron oxide and calcium sulfate destabilise foam where particle swelling, adsorbed surfactant solution and settlement into liquid phase due to their high densities were observed. The results suggest that a comprehensive study of liquid and solid interaction is critical in design of any foam for enhanced oil recovery processes.

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Section: Introductionmentioning

confidence: 99%

Experimental study on stability and rheological properties of aqueous foam in the presence of reservoir natural solid particles

Rafati

Haddad

Hamidi

2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…[21][22][23] Lu 24 once made an industry practice on controlling spontaneous combustion of coal pillar using foam slurry. [21][22][23] Lu 24 once made an industry practice on controlling spontaneous combustion of coal pillar using foam slurry.…”

Section: Introductionmentioning

confidence: 99%

“…Many literatures have showed that aqueous foams containing solid particles are excellent materials for spontaneous combustion prevention, which shows good performance of flowability, heat resistant, applicability, and environmental conservation. [21][22][23] Lu 24 once made an industry practice on controlling spontaneous combustion of coal pillar using foam slurry. Zhou 25 conducted an application of three-phase foam to fight the underground mine fire.…”

mentioning

confidence: 99%

Research on a noble extinguish material for the underground fire prevention

Han

Xue

et al. 2019

Fire and Materials

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Summary The three‐phase foam consisted of solid, liquid and gas is regarded as a highly effective measure for the underground mine fire prevention. In this study, the three‐phase foam technology is introduced and a visualization platform is established to exhibit the foam flow in a physical goaf. The diffusion rule and extinguishing performance for three‐phase foam are researched. Test results show that the three‐phase foam has a superior heat resistance than expansion foam in the top goaf. The coal heating rate is postponed after the three‐phase foam processing and the active functional groups are suppressed effectively. Increasing the foam expansion ratio is adverse to the three‐phase foam stability. The field application of three‐phase foam was evaluated via the practical extinguishment effect. The marked reduction in the sealed zone temperature and CO concentration proved that the proposed three‐phase foam technology was effective on controlling the concealed goaf fire.

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“…The associated detrimental effects involve huge personal casualties, loss of property and burnout of energy resources, which, in turn, produces serious environmental concerns [5]. To mitigate the hazards, various inhibitors [6][7][8][9] have been developed and applied in retarding the coal spontaneous combustion. For instance, suction salts such as CaCl 2 , NaCl, Mg(Ac) 2 [6], fly-ash stabilized foams [7], foamed hydrogels [8], and polymer emulsions [9] have been demonstrated to play the role of insulating the active sites on coal surface from oxygen with a physicallybased principle of forming an isolation layer, which precisely determines low efficacy and poor environmental stability of this class of inhibitors.…”

Section: Introductionmentioning

confidence: 99%

“…To mitigate the hazards, various inhibitors [6][7][8][9] have been developed and applied in retarding the coal spontaneous combustion. For instance, suction salts such as CaCl 2 , NaCl, Mg(Ac) 2 [6], fly-ash stabilized foams [7], foamed hydrogels [8], and polymer emulsions [9] have been demonstrated to play the role of insulating the active sites on coal surface from oxygen with a physicallybased principle of forming an isolation layer, which precisely determines low efficacy and poor environmental stability of this class of inhibitors. On the other hand, the chemically-based inhibitors [10][11][12][13][14] have also been described, aiming at either interrupting the free radical reactions or restraining the formation of reactive species.…”

Section: Introductionmentioning

confidence: 99%

Synchronous thermal analyses and kinetic studies on a caged-wrapping and sustained-release type of composite inhibitor retarding the spontaneous combustion of low-rank coal

Micro fly-ash particles stabilized Pickering foams and its combustion-retardant characteristics

Cited by 74 publications

References 37 publications

Experimental study on stability and rheological properties of aqueous foam in the presence of reservoir natural solid particles

Experimental study on stability and rheological properties of aqueous foam in the presence of reservoir natural solid particles

Research on a noble extinguish material for the underground fire prevention

Synchronous thermal analyses and kinetic studies on a caged-wrapping and sustained-release type of composite inhibitor retarding the spontaneous combustion of low-rank coal

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