Utilization of Different Fractions of Pyrolysis Water in Coal Water Fuel for Additional Heat Recovery

Kaltaev, A. Zh.; Slyusarskiy, Konstantin V.; Kirgina, Maria; Bogdanov, Ilya; Ларионов, К. Б.

doi:10.1007/s12649-022-01913-8

Cited by 1 publication

(1 citation statement)

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“…In the case of larger coal size, there is a large difference between the internal and external temperatures, which hinders the diffusion path of volatile matter generated by internal pyrolysis, and thermal hysteresis occurs. Primary pyrolysis volatile matter will continue to react in the internal sustained high-temperature region, and the resulting tars will continue to decompose on the surface, thus decreasing the amount of coal pyrolysis products [19]. Temperature is the central influence among the extrinsic factors in the coal pyrolysis process, and it is a measure of the degree of heat applied to the coal.…”

Section: Fixed-bed Pyrolysis Experiments and Pyrolysis Influencing Fa...mentioning

confidence: 99%

Application of Ni/MgO catalysts in the pyrolysis of bituminous coal

Zheng,

Wang,

et al. 2024

Applied Mathematics and Nonlinear Sciences

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Carbon pyrolysis is one of the essential ways to improve carbon energy utilization and reduce environmental pollution. The main product of carbon pyrolysis process is tar, and improving tar yield can not only increase the resource utilization efficiency, but also reduce the pollution to the environment. Therefore, this paper investigates the application of Ni/MgO catalyst in the pyrolysis process of bituminous coal. The experimental results show that Ni/MgO catalyst can effectively activate small molecule radicals and make them combine with prominent molecule radicals stably to improve the tar yield. Meanwhile, when it is under the pyrolysis gas environment, pyrolysis temperature reaches 570 ℃, gas flow rate is 375 ml/min, and the catalyst is selected to be filled in the upper layer, the activation effect of Ni/MgO catalyst is more prominent, and it can significantly increase the tar yield and the proportion of light oil. Ni/MgO catalyst had the best effect in tar yield increase compared to other catalysts, but the performance was average in fair oil percentage increase. The catalyst could also reduce the number of aliphatics in the tar and increase the proportion of non-aliphatics, improving the tar quality.

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Section: Fixed-bed Pyrolysis Experiments and Pyrolysis Influencing Fa...mentioning

confidence: 99%