高温熟料非稳态非热平衡渗流换热模型

doi:10.3969/j.issn.1000-1158.2019.03.14

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Abstract The high temperature cement clinker can be regarded as glowing red and translucent porous media when it is discharged from rotary kiln to grate cooler. It brings greater difficulty to technology improvement of grate cooler since the gas-solid heat transfer mechanism is complex. According to the problem, the glowing red particle can be equivalent to optically thick medium, then an integrated heat transfer coefficient is derived for high temperature clinker particle when heat conducting and thermal radiating. Based on the seepage mechanics and heat transfer theory, an unsteady seepage heat transfer model with thermal non-equilibrium of cement clinker is built which considering the heat radiation effect between the high temperature clinker particle. By solving the model, the distribution of clinker temperature and gas temperature inside the material layer are obtained, at the same time, the difference of cooling rates in different regions are compared to gain the impact of radiation heat transfer factor on the material layer temperature distribution.

Key words： metrology seepage heat transfer;cement clinker grate cooler porous media thermal radiation

Received: 02 January 2018 Published: 19 April 2019

PACS:

TB941

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	Articles by authors
	WANG Mei-qi
	CHEN En-li
	GUO Wen-wu
	LIU Peng-fei
	QI Zhuang
	HOU Shuang

Cite this article:

WANG Mei-qi,CHEN En-li,GUO Wen-wu, et al. Seepage Heat Transfer Model with Thermal Non-equilibrium of High Temperature Clinker[J]. Acta Metrologica Sinica, 2019, 40(3): 432-439.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.03.14 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I3/432

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