机械炼焦过程生成飞灰中含碳组分分布特征

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Abstract

In order to clarify the characteristics of carbon contents (OC,EC) in the fly ash generated from coking process, the fly ash samples from three typical coking plants in Shanxi Province were collected. The contents of OC and EC were tested by carbon element analyzer and the EC/OC as well as emission factors were studied. The mass concentration of OC was higher than EC in fly ash. The concentration ranges of OC and EC in fly ash were 4.03×10²~4.34×10²mg/g, 3.25×10²~3.74×10²mg/g, with the mean values of 4.2×10² and 3.52×10²mg/g, respectively. The EC/OC in fly ash emitted from different coking plants ranged from 0.80 to 0.88 with an average of 0.84. The ratios obtained in this study are obviously higher than those from industrial coal combustion, and the EC content in fly ash is higher than that in flue gas during coking processes. Emission factors of OC and EC in coking process were 2970~3205g/t and 2395~2756g/t, with the mean values of 3100 and 2596g/t, respectively. According to the emission factors, the estimated emissions of the OC and EC from fly ash during coking process in Shanxi Province in 2016 were 253725.1 and 212467.7t, respectively.

Key words： coking fly ash organic carbon elemental carbon coal charging coke pushing

Received: 21 April 2017

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X513

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	Articles by authors
	JING Dan-hua
	MU Ling
	WANG Jie
	XIN Bo
	ZHANG Da-yu

Cite this article:

JING Dan-hua,MU Ling,WANG Jie等. Characterization of carbon contents in fly ash from coking processes[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(11): 4097-4102.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I11/4097

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