离子交换法洗涤准东煤脱钠提质研究  

Ion Exchange Method of Coal-washing and Sodium-removing for Zhundong Coal Upgrading

作　　者：李想[1] 孙文博[2] 吕太[2] 冯银行 

机构地区：[1]吉林化工学院能源与动力工程系,吉林省吉林市硕士讲师132012 [2]东北电力大学能源与动力工程学院,吉林省吉林市硕士生132012

出　　处：《煤炭转化》2017年第2期11-15,共5页Coal Conversion

摘　　要：针对新疆准东煤钠含量偏高,锅炉燃用时易发生水冷壁结渣、受热面高温腐蚀和烟道沾污积灰等情况,对准东煤的煤质特性进行分析,采用阳离子交换树脂洗涤准东煤,利用树脂的离子交换功能,使树脂的交换基团中的阳离子与准东煤的钠离子发生置换反应,达到脱钠的效果,并研究洗涤温度与洗涤时间对准东煤脱钠效果的影响.结果表明:在4h,60℃的恒温洗涤条件下,准东煤脱钠效果达到最佳,可溶性钠脱除率达到90%以上,t_s提高124℃,煤质特性得到改善.Zhundong coal is a typical high-sodium coal,which makes slag on cold water wall,high temperature corrosion in heated wall,pollution and dust contamination in flue pipe prone to take place when coal is burning in power plant.The characteristic of Zhundong coal was analyzed,cation exchange resin method was used to wash coal.The exchange function of resin made the displacement reaction occur between the cation in exchange group and sodion in Zhundong coal,so that the sodium in coal could be removed.The effect of temperature and time on the desulphurization efficiency of Zhundong coal was studied.The results show that the removal effect in condition of 4h,60 ℃is optimum,sodium removal rate reaches to 90% and the soften temperature（ts）increase by 124 ℃,and the coal characteristics are improved.

关 键 词：准东煤 离子交换 洗煤 脱钠 提质 

分 类 号：TQ520.61[化学工程—煤化学工程]