摘要
基于测试耗氧速率和氧化动力学参数研究煤样粒径对煤低温氧化的影响。利用煤低温氧化测试系统,测算在供应气体流量、氧含量等给定条件下四类不同粒径范围煤样升温氧化耗氧速率,同时依据基于耗氧量建立的数学模型来测算煤低温氧化时不同粒径煤样活化能和指前因子等动力学参数,结果表明不同粒径煤样低温氧化耗氧速率变化分为缓慢耗氧、浅度耗氧和深度耗氧等三个阶段,在实验条件下煤样粒径小于0.198mm的煤样更适合煤低温氧化。
Influence of coal particle size on low temperature oxidation of coal was studied by means of testing the rate of oxygen consumption and kinetics parameters. In the paper coal low -temperature oxidation test system was used to estimate the oxygen consumption rate of low temperature oxidation of 4 coal samples with different particle size range under the given conditions of gas flow supply and oxygen content. Based on the mathematical model of oxygen consumption to measure the kinetic parameters including activation energy and pre - exponential factor of the different particle size of coal during low temperature oxidation. The results showed that oxygen con- sumption rate in low temperature oxidation of coal samples with different particle size can divided into three stages as slow, small and intensive oxygen consumption. Under the experimental conditions coal sample of less than 0. 198 mm particle size is more suitable for low temperature coal oxidation.
出处
《安徽理工大学学报（自然科学版）》
CAS
2013年第4期62-66,共5页
Journal of Anhui University of Science and Technology:Natural Science
关键词
煤低温氧化
煤样粒径
耗氧速率
活化能
指前因子
low temperature oxidation of coal
particle size
oxygen consumption rate
activation energy
preexponential factor
