Experimental Investigation on Tar Generation and Pyrolysis of Lingxin Coal
Pyrolysis process is the basis of coal utilization,and the first step of gasification,liquefaction and other process.This article analyzed the influence of temperature and heating rate on LINGXIN coal pyrolysis process.The coal samples was treated with a thermogravimetric analyzer and a fix-bed reactor.The results showed that curves of thermalgracimetric and differential thermogracimetric shifted toward the high temperature region with the increase of heating rate.Fix-bed experimental simulate the actual production process and the results showed that yield of tar increases with the heating rate,while the highest yield of tar was acquired at the temperature of 700 ℃.A general activation energy range of 44～600 kJ/mol was suggested for the pyrolysis process by distributed activation energy model.The activation energy increase as the temperature increases,and the average was 206.43 kJ/mol.This research can provide reference for the actual production.
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