Investigation on the ash characteristics and AAEM migration during co-combustion of Zhundong coal and shale char in a fixed bed

Lu, Yang; Cao, Ran; Huang, Dongwei; Cui, Zhenni; Wang, Ying; Zhang, Yongfa

doi:10.1016/j.fuel.2022.125214

Cited by 9 publications

(4 citation statements)

References 39 publications

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“…The ash morphology changes with coal type and operating conditions . Therefore, this study explores the influence of physical ash parameters on gas-phase characteristics by changing the volume fraction and particle size of glass beads in the liquid pool.…”

Section: Methodsmentioning

confidence: 99%

“…The ash morphology changes with coal type and operating conditions. 48 Therefore, this study explores the influence of physical ash parameters on gas-phase characteristics by changing the volume fraction and particle size of glass beads in the liquid pool. In addition, the superficial gas velocity is also an essential operating parameter affecting the hydrodynamic characteristics in the annular bubble column.…”

Section: Experimental Setup Materials and Procedurementioning

confidence: 99%

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Prediction of Bubble Size Distribution above the Bubble-Breaking Plate

Wang

Zeng

et al. 2023

Ind. Eng. Chem. Res.

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The chord length distribution (CLD) of bubbles in the region above the bubble-breaking plate in the scrubbing−cooling chamber was studied experimentally using a conductivity probe. The predictive correlations of the shape parameters were established by fitting the CLD with a distribution function. The bubble shape was discussed, and the CLD was analytically converted to the size distribution of the direct contact of the probe. The results showed that the CLD has specific right-skewed characteristics, and the Rayleigh distribution has the best-fitting effect on the CLD. The correlation equation of the shape parameter k of the Rayleigh distribution concerning the Fr number, local gas holdup ε g , and dimensionless radius r/R was established. The predicted bubble size distributions (BSDs) based on ellipsoids are in good morphological agreement with the experimental size distributions. The relative error between the calculated and experimental values of the gas−liquid interface area was within ±20%, which verified the accuracy of the prediction of the BSD.

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Section: Methodsmentioning

confidence: 99%

Section: Experimental Setup Materials and Procedurementioning

confidence: 99%

Prediction of Bubble Size Distribution above the Bubble-Breaking Plate

Wang

Zeng

et al. 2023

Ind. Eng. Chem. Res.

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“…Currently, the cost of coke fluctuates around $550-600/t, and the cost of anthracite is at the level of $412-418/t at the shipping station [ [3], [4]]. Replacing coke with cheaper fuel will improve the technical and economic performance of thermal units.…”

Section: Introductionmentioning

confidence: 99%

“…It should also be considered that the expansion of the use of secondary raw materials, including carbon-containing ones, is an important factor in the efficiency of the entire industry of the Republic of Kazakhstan [ [4], [5]]. On the other hand, JSC "Kazakhstan Electrolysis Plant" (KEP), which is part of ENRC (Eurasian Natural Resources Corporation) (Pavlodar), annually generates up to 1,500 tons of waste carbon refractory lining and up to 25,000 tons of cinders of baked anodes [ [6], [7]].…”

Section: Introductionmentioning

confidence: 99%

Study of refractory raw materials of the Republic of Kazakhstan

Sidorina¹,

Isagulov²,

Rabatuly³

et al. 2022

KIMS/CUMR/MShKP

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Important aspects of increasing the competitiveness of domestic metallurgy and mechanical engineering are increasing the durability of thermal units and involving non-traditional, cheaper energy resources in production. One of these resources is carbon waste from the aluminum industry - electrode scrap and waste from the carbon lining of electrolyzers. The problem of their use as substitutes for solid fuels (coke coal) in the metallurgical, engineering and energy industries is fluorine- and alkali-containing salts that impregnate them, destroying the traditional lining of thermal units. The development of effective refractories resistant to fluorine- and alkali-containing corrodants (melts and gases) makes it possible to increase the competitiveness and efficiency of thermal units both through the use of cheaper energy carriers and by increasing the duration of their campaign. An important aspect is the simultaneous disposal of hazardous industrial waste and the reduction of the environmental burden on the ecosphere of the Republic of Kazakhstan. The basis for the development of new refractory materials resistant to fluorine- and alkali-containing corrodants is the analysis of the existing raw material base of the Republic of Kazakhstan and the choice of materials that make it possible to obtain aluminosilicate refractories with increased chemical resistance. In the work, the phase and chemical composition of refractory clays and kaolins of the Republic of Kazakhstan were studied, their rheological and thermophysical properties were investigated. Selected raw materials for the development of technology for the production of dense aluminosilicate refractory products.

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Exploring influence of MgO/SiO2 on viscosity-temperature property of coal ash slags under entrained flow gasification condition

Li,

Wu,

et al. 2023

Energy

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Investigation on the ash characteristics and AAEM migration during co-combustion of Zhundong coal and shale char in a fixed bed

Cited by 9 publications

References 39 publications

Prediction of Bubble Size Distribution above the Bubble-Breaking Plate

Prediction of Bubble Size Distribution above the Bubble-Breaking Plate

Study of refractory raw materials of the Republic of Kazakhstan

Exploring influence of MgO/SiO2 on viscosity-temperature property of coal ash slags under entrained flow gasification condition

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