随着我国现代化建设的不断发展,城乡建设步伐加快,大规模的房屋建筑更新改造活动层出不穷,大量室外建筑垃圾废弃物由此产生。但简单的填埋和焚烧处理,会对人类的生存环境和人体健康造成影响。近年来兴起的垃圾热解处理技术,因其减量化...随着我国现代化建设的不断发展,城乡建设步伐加快,大规模的房屋建筑更新改造活动层出不穷,大量室外建筑垃圾废弃物由此产生。但简单的填埋和焚烧处理,会对人类的生存环境和人体健康造成影响。近年来兴起的垃圾热解处理技术,因其减量化无害化资源化的处理结果备受关注。选取含有石灰的室外建筑垃圾,利用热分析仪进行热重试验,得到不同升温速率、不同气氛下的TGDTA曲线,分析求解分解活化能Ea、热动力学的机理函数f(α)以及指前因子A。结果表明:在不同的升温速率下样品均在125℃左右开始热解,温度升到160℃左右时基本完全热解达到平衡,热分解为吸热过程;根据Kissinger法,该分解反应活化能Ea为33.36 k J/mol,指前因子A的对数值lg A=1.12 min^(-1);按照Ozawa法,该分解反应活化能Ea为35.36 k J/mol,指前因子A的对数值lg A=1.07 min^(-1);该试验可用三维固相表面反应R3模型表示。展开更多
The combustion performance of the blend of lignite and residue from Shenhua coal liquefaction was studied.It is found that the DTG plot for the combustion of residue of coal liquefaction has three characteristic peaks...The combustion performance of the blend of lignite and residue from Shenhua coal liquefaction was studied.It is found that the DTG plot for the combustion of residue of coal liquefaction has three characteristic peaks,while the DTG plot of lignite combustion has one characteristic peak.With the decreasing of the blending ratio of coal liquefaction residue to lignite the three characteristic peaks become faintness.The combustion activation energies of blended coals are calculated.Compared with the blended coals,the coal liquefaction residue has the biggest activation energy,but the lignite has the lowest one.With the blending ratio decreasing the activation energy and ignite temperature of blends decrease slightly.The maximum weight loss rate DTGmax for coal liquefaction residue is bigger than that for lignite.展开更多
文摘随着我国现代化建设的不断发展,城乡建设步伐加快,大规模的房屋建筑更新改造活动层出不穷,大量室外建筑垃圾废弃物由此产生。但简单的填埋和焚烧处理,会对人类的生存环境和人体健康造成影响。近年来兴起的垃圾热解处理技术,因其减量化无害化资源化的处理结果备受关注。选取含有石灰的室外建筑垃圾,利用热分析仪进行热重试验,得到不同升温速率、不同气氛下的TGDTA曲线,分析求解分解活化能Ea、热动力学的机理函数f(α)以及指前因子A。结果表明:在不同的升温速率下样品均在125℃左右开始热解,温度升到160℃左右时基本完全热解达到平衡,热分解为吸热过程;根据Kissinger法,该分解反应活化能Ea为33.36 k J/mol,指前因子A的对数值lg A=1.12 min^(-1);按照Ozawa法,该分解反应活化能Ea为35.36 k J/mol,指前因子A的对数值lg A=1.07 min^(-1);该试验可用三维固相表面反应R3模型表示。
文摘The combustion performance of the blend of lignite and residue from Shenhua coal liquefaction was studied.It is found that the DTG plot for the combustion of residue of coal liquefaction has three characteristic peaks,while the DTG plot of lignite combustion has one characteristic peak.With the decreasing of the blending ratio of coal liquefaction residue to lignite the three characteristic peaks become faintness.The combustion activation energies of blended coals are calculated.Compared with the blended coals,the coal liquefaction residue has the biggest activation energy,but the lignite has the lowest one.With the blending ratio decreasing the activation energy and ignite temperature of blends decrease slightly.The maximum weight loss rate DTGmax for coal liquefaction residue is bigger than that for lignite.
