长焰煤低温干馏脱硫动力学实验  

Experimental study on desulfurization dynamics of low-temperature carbonization of long flame coal

作　　者：张学梅[1] 李东[1] 马青华[1] 郝静远 ZHANG Xuemei;LI Dong;MA Qinghua;HAO Jingyuan(Energy&Chemical Engineering Research Center,Xi′an Siyuan University,Xi′an 710038,China;School of Chemical Engineering,Xi′an Jiaotong University,Xi′an 710038,China)

机构地区：[1]西安思源学院能源及化工大数据应用教学研究中心,陕西西安710038 [2]西安交通大学化工学院,陕西西安710038

出　　处：《能源环境保护》2021年第4期58-63,共6页Energy Environmental Protection

基　　金：陕西省教育厅2020年度一般专项科学研究计划(20JK0858)。

摘　　要：按照温度时间取样路线图,采用HYLZ-2型铝甑低温干馏炉热解东胜长焰煤,分析了热解方式、温度和时间对脱硫的影响,研究了恒速升温阶段和恒温阶段的动力学参数。结果表明:以5℃/min恒速从20℃升至245℃,有20%的硫从固态煤中析出;热解终温在460~510℃恒温320 min后,仍有60%~64%的硫留在固态煤焦中;恒速升温阶段的平均脱硫率活化能和平均脱硫率指前因子分别为30.23 kJ/mol和35.51;恒温阶段的脱硫率活化能E和脱硫率指前因子自然对数lnA值分别为196.72 kJ/mol和25.689。According to the temperature-time-sampling road map,Dongsheng long flame coal was pyrolyzed in HYLZ-2 aluminum retort low-temperature dry distillation furnace.The effects of pyrolysis mode,temperature and time on desulfurization were analyzed.The kinetic parameters of constant temperature rising stage and constant temperature stage were studied.The results show that 20%of sulfur is removed from solid coal when the temperature rises from 20℃to 245℃at a constant speed of 5℃/min.After isothermal pyrolysis for 320 minutes at 460~510℃,60%~64%of sulfur still remains in the solid coal char.In the constant temperature rising stage,the average desulfurization activation energy and the average desulfurization pre-exponential factor are 30.23 kJ/mol and 35.51,respectively.The activation energy and the natural logarithm of desulphurization pre-exponential factor in the constant temperature stage are 196.72 kJ/mol and 25.689,respectively.

关 键 词：低温干馏热解 温度时间取样路线图 脱硫动力学 活化能 指前因子 

分 类 号：X701.3[环境科学与工程—环境工程]