草浆黑液半焦与石油焦水蒸气共气化特性  

Steam Co-gasification Characteristics of Wheat Straw Black Liquor Char and Petroleum Coke

作　　者：王贵金[1,2] 袁洪友[1] 郭大亮[1] 周肇秋[1] 阴秀丽[1] 吴创之[1] 

机构地区：[1]中国科学院广州能源研究所,可再生能源重点实验室,广东广州510640 [2]中国科学院大学,北京100039

出　　处：《石油学报（石油加工）》2015年第4期897-903,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(51176195);“十二·五”国家科技支撑计划资助项目(2012BAA09B03);广东省战略新兴产业项目(2012A032300019)资助

摘　　要：采用热重分析仪和管式炉在850℃下进行草浆黑液半焦与石油焦水蒸气共气化实验,并采用气相色谱、X射线衍射和扫描电镜等分析手段,从热失重、气体产物和残余固体特性角度探究了二者在共气化过程中的相互作用规律。结果表明,二者在共气化过程中存在协同效应;与二者单独气化的加权平均相比,其气化反应速率加快,产气热值和碳转化率增大,燃气品质和能源效率得到提高。当石油焦质量分数由25%增至75%时,协同效应加强,Na2CO3对石油焦气化的催化效果以及石油焦对Na2CO3损失的抑制作用均愈加显著。当石油焦质量分数为75%时,共气化残余固体的熔融现象得以抑制。The steam co-gasification experiments of the wheat straw black liquor char and petroleum coke were conducted in a thermo gravimetric analyzer and a laboratory-scale tube furnace at 850℃ , respectively. By using the gas chromatography, X-ray diffraction and scanning electron microscope analytical technologies, the interaction characteristics of the wheat straw black liquor char and petroleum coke in co-gasification were analyzed based on the properties of thermal mass loss, gaseous products and solid residues. The results showed that synergistic effects between the black liquor char and petroleum coke occurred during the co-gasification process at 850℃. Compared with the weighted average of the two samples in separate gasification reactions, the gasification reaction rate was improved by co-gasification, moreover, the gas quality and energy efficiency were both improved as a result of increasing gas heating value and carbon conversion. The catalytic effect of Na2 CO3 on petroleum coke gasification and inhibition role of petroleum coke on Na2 CO3 loss became more significant as the petroleum coke mass fraction ranging from 25% to 75%, and the melting phenomenon of gasification residual solid was suppressed, when the mass fraction of petroleum coke was 75 % in the mixture of the wheat straw black liquor char and petroleum coke.

关 键 词：黑液 石油焦 共气化 

分 类 号：TK6[动力工程及工程热物理—生物能]