生产褐煤活性焦用立式炉的热工评价与分析  

Thermal evaluation and analysis of vertical furnace for lignite activated coke production

作　　者：张培林[1,2] 吴鹏[1,2] 张旭辉[1,2] 

机构地区：[1]北京国电富通科技发展有限责任公司,北京100070 [2]国网电力科学研究院,江苏南京210003

出　　处：《洁净煤技术》2015年第5期91-94,98,共5页Clean Coal Technology

基　　金：国家科技部科研院所技术开发研究专项资金资助项目(2011EG121189)

摘　　要：褐煤活性焦具有孔隙发达、吸附能力强等特点,用立式炉生产活性焦可以减少中间产品转移环节,提高系统热效率,从而降低生产成本。简述了GF立式炉的主要结构、炭化和活化流程,根据采集的运行数据和化验结果,计算得到物料平衡和热量平衡表,分析煤气和活性焦等产品的各项性质。结果表明:以原煤为基准时活性焦产率为27%,占物料总支出的14.95%,水分带走的热量占总支出热量的60.22%,干燥段热负荷最大;采用干法熄焦可以回收活化段底部物料显热,并用于原煤的预干燥,系统热效率为84.2%。GF立式炉具有气体和物料温度分布均匀,内部结构设置合理,运行稳定等特点。建议结合市场需求,调整生产运行参数,拓宽产品应用范围,提高褐煤提质产品经济附加值。Lignite activated coke had abundant pores and strong adsorption ability. The production cost could be reduced when the coke produced by vertical furnace,which decreased the intermediate transfer links and improved the thermal efficiency. The main structure of GF vertical furnace,carbonization and activation processes were described. Depending on operating data and experiment results,the material balance and heat balance were calculated,and the properties of products including coal gas and activated coke were analyzed. The results showed that,using raw coal as benchmark,the activated coke yield was 27%,accounting for 14. 95% of the total materials expenditure.Heat consumption for water evaporation accounted 60. 22% of the total calories expenditure,and the dry segment was the largest heat load.The coke cooling method with flue gas could recover the heat from the bottom of activation section,which used for pre- drying of raw coal.The system thermal efficiency was 84. 2%. GF vertical furnace had the features of temperature distribution uniformly of gas and materials,internal structure set reasonable and operational stability. Combined with market demand and adjusted production operating parameters,the application range of product broadened and the economic value increased.

关 键 词：褐煤 活性焦 热平衡 立式炉 干熄焦 

分 类 号：TQ523[化学工程—煤化学工程]