煤气化细渣残炭与煤的掺烧及其气体释放特性  

Co-combustion Characteristic and Gas Emission Characteristic of Entrained Flow Gasification Fine Slag Residual Carbon and Coal

作　　者：折成林 白永辉 于广锁 刘夏青[1] 马利 方鹏程 李芳 She Chenglin;Bai Yonghui;Yu Guangsuo;Liu Xiaqing;Ma Li;Fang Pengcheng;Li Fang(National Energy Group Ningxia Coal Company Limited Coal-to-Oil Chemical Utility Management Branch,Yinchuan 750021,China;School of Chemistry and Chemical Engineering,Ningxia University,Yinchuan 750021,China;School of Resource and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]国家能源集团宁夏煤业有限责任公司煤制油化工公用设施管理分公司,宁夏银川750021 [2]宁夏大学化学化工学院,宁夏银川750021 [3]华东理工大学资源与环境工程学院,上海200237

出　　处：《宁夏大学学报（自然科学版）》2024年第3期282-289,共8页Journal of Ningxia University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(22168032);宁东能源化工基地重点基金资助项目(2023NDKJXMLX022)。

摘　　要：为了资源化、规模化利用大量堆积的固体废弃物煤气化细渣(coal gasification fine slag, FS),使用泡沫浮选法对FS中的残炭(residual carbon, RC)进行富集,通过热重分析仪探究RC单独燃烧及与烟煤共燃烧的特性,并对比实验结果与动力学计算结果,阐明RC单独燃烧及与煤共燃烧过程中颗粒的着火性能、燃尽性能、燃烧稳定性以及综合燃烧特性;通过质谱分析仪探究RC单独燃烧及与煤共燃烧过程中CO,CO_(2),NO_(2)的排放规律.结果表明,浮选过程降低了FS中铝硅酸盐的聚合度,能够有效富集RC;在与煤共燃烧过程中,添加烟煤能够显著改善RC的燃烧反应性,添加不同质量的RC,能够有效减少烟煤燃烧过程中污染物的释放强度,当与煤共燃烧体系中RC的质量分数为80%时,NO_(2)的释放量最少.In order to utilize the large amount of accumulated solid waste coal gasification fine slag(FS)in a resourceful and large-scale manner,this study uses froth flotation to enrich the residual carbon(RC)in FS.The characteristics of RC combustion alone and its co-combustion with bituminous coal are investigated using a thermogravimetric analyzer.By comparing experimental results with kinetic calculations,the ignition performance,burnout performance,combustion stability,and comprehensive combustion characteristics of particles during single and co-combustion processes are elucidated.Additionally,the emission patterns of CO,CO_(2),and NO_(2) during the combustion of RC alone and in combination with coal are explored using a mass spectrometer.The results show that the flotation process effectively reduces the aluminosilicate polymerization degree in FS,enriching RC.The addition of bituminous coal significantly enhances the combustion reactivity of RC during cocombustion.Different mass ratios of RC can effectively reduce pollutant emissions during the combustion of bituminous coal,with an 80%RC mass fraction resulting in the lowest NO_(2) emissions.

关 键 词：煤气化细渣 泡沫浮选 共燃烧特性 气体释放 

分 类 号：TQ534[化学工程—煤化学工程]