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Effects of Zn on pyrolysis characteristics of Shenhua lignite

By Wipawan Sangsanga, Chuan Na, Jinxiao Dou and Jianglong Yu

Abstract

The catalytic effects of Zn on the release of the gaseous products during pyrolysis of Shenhua lignite was investigated by using a fixed-bed quartz reactor. The product gas compositions from the coal pyrolysis were analyzed by a gas chromatography (GC). Experimental results show that Zn had noticeable catalytic effects on lignite pyrolysis. With the increase in Zn content, lignite weight loss increases during pyrolysis. However, there was an optimum content for amount Zn into the coal. Pyrolysis temperature had a great impact on the composition of pyrolysis gas. As the pyrolysis temperature increased, char yield decreased and gas yield increased. There existed a temperature that tar yield reached its maximum value

Topics: lignite, pyrolysis, zinc, yield, catalytic activity
Publisher: Trans Tech Publications
Year: 2014
DOI identifier: 10.4028/www.scientific.net
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