新疆伊犁南台子煤热解耦合CO变换反应的研究  

Study on the Coal Pyrolysis Coupling with CO Shift Reaction of the Nantaizi Coal from Yili, Xinjiang

作　　者：刘彦[1] 朱康周 周岐雄[1] 乔恩[1] 

机构地区：[1]新疆大学石油天然气精细化工教育部和自治区重点实验室,新疆乌鲁木齐830046

出　　处：《煤化工》2015年第3期27-30,37,共5页Coal Chemical Industry

基　　金：新疆大学大学生创新训练项目(XJU-SRT-13158)

摘　　要：为探索提高焦油产率的新途径,以新疆伊犁南台子煤为研究对象,考察了CO变换反应与煤热解反应耦合对焦油产率的影响。采用常压固定床反应器,B205为变换催化剂,分别考察了热解气氛、反应温度对南台子煤热解反应的影响。结果表明,CO变换反应与煤热解反应耦合条件下,热解温度在450℃-650℃范围,焦油产率随温度的升高而增大;650℃之后,焦油产率保持稳定。在热解温度650℃、其他反应条件完全一致、CO变换反应与煤热解反应耦合条件下,焦油产率分别为N2、H2气氛中焦油产率的1.62倍和1.43倍。半焦和焦油的红外分析表明,CO变换反应生成的活性氢参与了芳烃的加成反应,使氢数量增多,提高了焦油产率。The impact of the tar yield by coal pyrolysis coupling with CO shift reaction was investigated based on the Nantaizi coal from Yili, Xinjiang Uyghur Autonomous Region to explore a new way to raise the tar yield. The atmospheric fixed bed reactor was applied and the B205 was used as the shift catalyst to investigate the impact of the pyrolysis atmosphere and reaction temperature （450℃ -750 ℃） on the pyrolysis reaction of the Nantaizi coal, respectively. The result showed that the tar yield increased with the rise of temperature at the temperature range between 450 ℃-650 ℃ on condition that CO shift conversion was coupled with pyrolysis reaction, and after 650 ℃ the tar yield remained stable. When the pyrolysis temperature was at 650 ℃, the tar yield of the CO shift reaction atmosphere was 1.62 times that of the nitrogen atmosphere and 1.43 times that of the hydrogen atmosphere at the same temperature on condition that all the other reaction conditions were identical and the CO shift conversion was coupled with pyrolysis reaction. FT-IR of chars and tars showed that the active hydrogen produced from CO shift reaction joined in the addition reaction of the aromatic hydrocarbons, and that contributed to the increase of hydrogen, which helped to increase the tar yield.

关 键 词：南台子煤 CO变换反应 热解 耦合 焦油 半焦 

分 类 号：TQ530.2[化学工程—煤化学工程]