Numerical study on the effects of reaction conditions on single-particle char combustion in O2/H2O atmospheres

Chen, Kun; Chun, Bai; Zhao, Yijun; Zhang, Wenda; Sun, Shaozeng; Feng, Dongdong; Qin, Yukun

doi:10.1016/j.fuel.2022.125343

Cited by 9 publications

(2 citation statements)

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“…The cocombustion of pulverized coal in the high-temperature zone (about 1500 °C) produces a significant proportion of thermal and prompt NO x . Adding water vapor produced from gas hydrate dissociation reduces the flame temperature locally, so the concentrations of thermal and prompt NO x decrease …”

Section: Resultsmentioning

confidence: 99%

“…Adding water vapor produced from gas hydrate dissociation reduces the flame temperature locally, so the concentrations of thermal and prompt NO x decrease. 54 Remote settlements without pipeline gas supply are the main potential users of gas hydrates as power generating fuel components. As pipeline installation would be too expensive for these settlements, they largely rely on wood, which is locally available, and diesel fuel, which is delivered.…”

Section: Impact Of Initial Volume Of Watermentioning

confidence: 99%

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Production Phases of Methane and Carbon Dioxide Hydrates Intended for Energy Conversion

Vinogrodskiy,

Shlegel,

Strizhak

2024

Ind. Eng. Chem. Res.

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Today, natural gas is transported by pipelines or in a liquefied state, which is extremely cost-intensive. Using gas hydrates for gas transportation can substantially reduce these costs. However, far too little attention has been paid to developing fast and economical ways to synthesize gas hydrates. To address this research gap, we conducted several series of experiments on the synthesis of methane and carbon dioxide hydrates in a reactor with a magnetic stirrer and a working volume of 500 mL. The thermobaric conditions, stirring speed, and initial volume of water were varied to determine the optimal parameters for hydrate production. The experiments have shown that the effective hydrate production requires nonmonotonic mechanical agitation of liquid and crystals in the reactor. The stirring speed should be varied during the transitions between hydrate formation phases. As a result, the reactor input power can be reduced by 10−15%, while maintaining high production efficiency. The research findings served as a basis for a newly developed conceptual framework for the use of gas hydrates in the power industry.

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Section: Resultsmentioning

confidence: 99%

Section: Impact Of Initial Volume Of Watermentioning

confidence: 99%