王琳琳;刁永发;刘鑫;范红兵;王立威;

• 1:东华大学环境科学与工程学院

摘要(Abstract)：

采用热重分析方法研究了燃煤飞灰负载型碱基吸收剂脱除CO2的再生反应特性,同时介绍了燃煤飞灰负载型碱基吸收剂的制备方法,即向燃煤飞灰中添加KHCO3和黏结剂制备得到CO2干式吸收剂。针对不同升温速率和反应终温对吸收剂再生反应特性的影响规律进行试验分析,采用热分析动力学方法确定了吸收剂再生反应特性参数。结果表明:KHCO3负载于燃煤飞灰后,有利于提高颗粒的比表面积;在氮气气氛下,再生反应表观活化能为24⁶0 k J/mol;反应速率和终温是再生反应的重要影响因素;当升温速率为10℃/min时,所需活化能最低,为24.8 k J/mol,再生性能最好;再生反应的起始温度为10060 k J/mol;反应速率和终温是再生反应的重要影响因素;当升温速率为10℃/min时,所需活化能最低,为24.8 k J/mol,再生性能最好;再生反应的起始温度为100¹50℃,终止温度为225150℃,终止温度为225²75℃。

关键词(KeyWords)： 环境工程学;CO2;燃煤飞灰;再生;热重分析

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 王琳琳;刁永发;刘鑫;范红兵;王立威;

参考文献(References)：

• [1]YAN Shuiping(晏水平),FANG Mengxiang(方梦祥),ZHANG Weifeng(张卫风),et al.Technique analyses and research progress of CO2separation from flue gas by chemical absorption[J].Chemical Industry and Engineering Progress(化工进展),2006,25(9):1018-1024.
• [2]HU Lin(胡林),RAN Jingyu(冉景煜),ZHANG Li(张力),et al.Experimental study of carbon dioxide removal by activated carbon fibers[J].Chinese Journal of Environmental Engineering(环境工程学报),2010,4(1):169-172.
• [3]HUANG Donglan(黄冬兰),WANG Jinqu(王金渠),HE Gaohong(贺高红),et al.On influencing factors of CO2absorption by means of membrane contactor[J].Journal of Safety and Environment(安全与环境学报),2004,4(6):18-21.
• [4]LEE J B,EOM T H,OH B S,et al.CO2capture from flue gas using potassium-based dry regenerable sorbents[J].Energy Procedia,2011,4:1494-1499.
• [5]LIANG Y,HARRISON D P,GUPTA R P,et al.Carbon dioxide capture using dry sodium-based sorbents[J].Energy and Fuels,2004,18(2):569-575.
• [6]LEE S C,CHAE H J,CHOI B Y,et al.The effect of relative humidity on CO2capture capacity of potassium-based sorbents[J].Korean Journal of Chemical Engineering,2011,28(2):480-486.
• [7]XU Zhenhua(徐振华),LIU Jianguo(刘建国),SONG Minying(宋敏英),et al.Technological study on sintering ceramisite with sewage sludge and sediment and fly ash[J].Journal of Safety and Environment(安全与环境学报),2012,12(4):21-26.
• [8]LI Hailong(李海龙),ZHANG Junying(张军营),ZHAO Yongchun(赵永椿),et al.Study on physicochemical characteristic and wetting mechanism of fly ash in coal fired power plant[J].Journal of Engineering Thermophysics(工程热物理学报),2009,30(9):1597-1600.
• [9]WANG Wenjing(王文静),HAN Zuozhen(韩作振),CHENG Jianguang(程建光),et al.The withdrawing of alumina from the fly ash[J].Energy Environmental Protection(能源环境保护),2003,17(4):17-19.
• [10]GRAY M L,SOONG Y,CHAMPAGNE K J,et al.CO2capture by amine-enriched fly ash carbon sorbents[J].Separation and Purification Technology,2004,35(1):31-36.
• [11]ZHAO Chuanwen(赵传文),CHEN Xiaoping(陈晓平),ZHAO Changsui(赵长遂).Carbonation characteristics of K2CO3/Al2O3for CO2capture[J].Journal of Chemical Industry and Engineering(化工学报),2009,60(4):1022-1027.
• [12]LEE S C,CHAE H J,LEE S J,et al.Development of regenerable Mg O-based sorbent promoted with K2CO3for CO2capture at low temperatures[J].Environmental Science and Technology,2008,42(8):2736-2741.
• [13]ZHOU Zhijie(周志杰),FAN Xiaolei(范晓雷),ZHANG Wei(张薇),et al.Char gasification kinetics using non-isothermal TGA[J].Journal of China Coal Society(煤炭学报),2006,31(2):219-222.
• [14]WANG Hui(王辉),JIANG Xiumin(姜秀民),LIU Jianguo(刘建国),et al.Analysis of pyrolytic properties of coal-water slurry under various heating rates[J].Journal of Power Engineering(动力工程),2007,27(2):263-266.
• [15]ARENILLAS A,SMITH K M,DRAGE T C,et al.CO2capture using some fly ash-derived carbon materials[J].Fuel,2005,84(17):2204-2210.