40 kg神东煤焦炉热解试验及产物分析  

Pyrolysis experiment and product analysis of Shendong coal in 40 kg experimental oven

作　　者：彭德军 邸传耕 张飞 PENG Dejun;DI Chuangeng;ZHANG Fei(CHN Energy Shendong Coal Group Co.,Ltd.,Shenmu 719315,China)

机构地区：[1]国能神东煤炭集团有限责任公司,陕西神木719315

出　　处：《洁净煤技术》2022年第4期103-109,共7页Clean Coal Technology

摘　　要：神东煤为典型侏罗纪不黏煤,具有低灰、低硫、低磷、低钾钠等优点,焦油产率较高,挥发分产率较高,哈氏可磨性指数和热稳定性中等,比较适合中低温热解加工。为全面研究神东煤的热解特征,综合使用热重分析仪和40 kg热解装置,研究神东煤在不同温度下焦油、热解气和半焦的生成规律及性质。结果表明,神东煤煤质优良,格金焦油产率较高,比较适合中低温热解提质加工。随着热解温度的升高,煤气产率显著增加,半焦产率逐渐减少,半焦的挥发分迅速下降,碳含量增加,机械强度变差,反应活性和可磨性呈降低趋势,比电阻急速下降。半焦的比表面积较小,苯酚吸附量较低。提高热解温度可明显改善半焦性质,对神东煤的提质作用比较明显。热解焦油性质优良,比较适宜加氢制备清洁燃料。Shendong coal is a typical Jurassic non stick coal,which has the advantages of low ash,low sulfur,low phosphorus,low potassium and sodium content,high tar yield,high volatile yield,medium grindability index and thermal stability.It is more suitable for medium and low temperature pyrolysis processing.In order to study the pyrolysis characteristics of Shendong coal comprehensively,thermogravimetric analyzer and 40 kg pyrolysis unit were used to study the formation and properties of tar,pyrolysis gas and char of Shendong coal.The re⁃sults show that excellent coal qualities with high tar yield are found of Shendong coal,which makes it suitable for upgrading in medium-low temperature pyrolysis.With the increasing of pyrolysis temperature,the yield of pyrolysis gas increases significantly while the yield of char decreases gradually.The content of volatile matter in char decreases rapidly,while the content of carbon increases gradually.The mechani⁃cal strength of char degrades gradually.The reactivity and grindability of char decrease while the specific resistance decreases rapidly.The specific surface and the phenol adsorption capacity of char are relatively low.Excellent properties are found of pyrolysis tar,which makes it suitable for hydrogenation to prepare clean fuel.

关 键 词：热解特性 半焦 热解焦油 神东煤 

分 类 号：TQ523[化学工程—煤化学工程]