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中文摘要：
运用等温热重技术，以C02为气化剂，在常压和1000℃～1300℃温度范围内，考察了义马煤焦的气化反应性．结果表明，随着气化温度的提高，义马煤焦的反应性和反应速度呈现出增加的趋势，但在灰熔融温度附近出现不同的情况．碳还原率为50％时，1000℃～1100℃和1100℃～1300℃的气化反应活化能分别为140．97kJ／mol与20．84kJ／mol.
英文摘要：
The CO2 gasification reactivity of Yima coal char were investigated by an isothermal thermo-gravimetric analysis at ambient pressure and at temperatures from 1 000℃ to 1 400℃. The results showed that general gasification reactivity and reaction of chars increased with gasification temperature, but some different phenomenon appeared near coal ash fusion point. When conversion was 50%, the average apparent activation energies of chars respectively were 224.03 kJ/mol and 31.47 kJ/mol at 1 000 ℃-1 100℃ and 1 100℃-1 300℃. KEY WORDS Yima coal char, isothermal thermo-gravimetric analysis, gasification reactivity
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