黑液与石油焦共热解及其产物特性研究.docx

第42卷第5期 燃 料 化 学 学 报 Vol.42 No.5 2 0 1 4年5月 J o u r n a l o f F u e l C h e m i s t r y a n d T e c h n o l o g y May 2014 文章编号：0253-2409(2014)05-0545-07 黑液与石油焦共热解及其产物特性研究 王贵金12,郭大亮1,袁洪友1,周肇秋1,阴秀丽',吴创之 (1.中国科学院广州能源研究所中国科学院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 100049) 摘 要：运用热重-红外联用(TGA-FTIR)和扫描电镜(SEM) 对黑液与石油焦的共热解过程进行了实验研究，考察了两者在 共热解过程中的热失重、挥发性组分释放及固体产物表面形貌特性；同时运用热重(TGA) 探究了热解固体产物黑液半焦和石 油焦的CO? 共气化反应特性。结果表明，在黑液与石油焦共热解过程中，温度低于600℃时，两者的热解相互独立；温度达到 600℃之后，相对于黑液和石油焦单独热解的加权平均值，挥发性气体产物CO? 和CO 的释放峰值温度向低温区移动，失重特 性也随之发生变化；800℃下的共热解固体产物表面产生新的形态特征，黑液的烧结得到抑制；850℃下的黑液半焦与石油焦 CO? 共气化实验表明，两者在共气化过程中存在协同效应，各自的碳转化率和气化速率明显提高，整体碳转化率提高了 51.27%,气化反应速率最大值增大了两倍。 关键词：黑液；石油焦；共热解；TGA;SEM 中图分类号：TK6 文献标识码：A Co-pyrolysis behaviors and products characteristics of black liquor and petroleum coke WANG Gui-jin'2, GUO Da-liang',YUAN Hong-you',ZHOU Zhao-qiu',YIN Xiu-li', WU Chuang-zhi' (1.CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences,Guangzhou 510640,China; 2.University of Chinese Academy of Sciences,Beijing 100049,China) Abstract: The weight loss characteristics, evolution patterns of volatiles and morphology of solid product from co-pyrolysis of black liquor and petroleum coke were studied by a thermo gravimetric analyzer coupled with Fourier Transform Infrared Spectrometry(TGA-FTIR)and scanning electronic microscopy(SEM). The CO? co-gasification characteristics of black liquor char and petroleum coke were also investigated by thermo gravimetric analyzer(TGA). The results suggested that the pyrolysis reactions had proceeded independently during co-pyrolysis process at temperatures below 600 ℃. However, as the temperature exceeded 600 ℃,the release peak temperature of CO? and CO were shifted to low temperature