山西煤炭
山西煤炭
산서매탄
Shanxi Coal
2015年
5期
1-2,19
,共3页
程序升温%反应速率%活化能%反应阶段
程序升溫%反應速率%活化能%反應階段
정서승온%반응속솔%활화능%반응계단
temperature programming%reaction rate%activation energy%reaction stage
通过煤的程序升温实验,了解煤低温氧化特性,利用煤氧反应前后氧化浓度的变化,计算出不同温度下的反应速率值,反应速率随温度上升不断增加. 根据Arrhenius方程,计算出不同氧化阶段的活化能值,通过活化能发现煤氧反应可以分为三个反应阶段,70 ℃与145 ℃分别为其临界温度,并且活化能值随着氧化反应的进行呈减小趋势.
通過煤的程序升溫實驗,瞭解煤低溫氧化特性,利用煤氧反應前後氧化濃度的變化,計算齣不同溫度下的反應速率值,反應速率隨溫度上升不斷增加. 根據Arrhenius方程,計算齣不同氧化階段的活化能值,通過活化能髮現煤氧反應可以分為三箇反應階段,70 ℃與145 ℃分彆為其臨界溫度,併且活化能值隨著氧化反應的進行呈減小趨勢.
통과매적정서승온실험,료해매저온양화특성,이용매양반응전후양화농도적변화,계산출불동온도하적반응속솔치,반응속솔수온도상승불단증가. 근거Arrhenius방정,계산출불동양화계단적활화능치,통과활화능발현매양반응가이분위삼개반응계단,70 ℃여145 ℃분별위기림계온도,병차활화능치수착양화반응적진행정감소추세.
By temperature programming experiment, the low temperature oxidation properties of coal was studied. By comparison of the oxides concentration before and after oxidation, reaction rate at different temperatures was calculated. The reaction rate increases with the temperature. According to Arrhenius equation, the activation energy values in the different oxidation stages were calculated. According to the activation energy, the coal oxygen reaction could be divided into three stages, with two critical temperatures: 70℃and 145℃. Besides, the activation energy decreases with the oxidation reaction.
