摘 要:介绍以粉煤灰为主要原料,加入工业石灰或石灰石,采用消化方法制备了高活性吸收剂,并加入添加剂使之成为"富氧型"吸收剂.利用固定床实验装置,筛选出具有良好脱硫脱硝性能的以亚氯酸钠为添加剂的"富氧型"吸收剂.通过正交实验,确定了各影响因素.在管道喷射装置上,利用筛选出的吸收剂进行了同时脱硫脱硝实验,研究了温度、Ca/(S+N)、湿度、添加剂用量等因素对脱硫脱硝效率的影响,确定了最佳工艺条件.在此条件下,利用烟气循环流化床(CFB)进行了同时脱硫脱硝实验,脱硫和脱硝效率分别达到93.7%和65.5%.
关键词:高活性吸收剂;富氧型;烟气;同时脱硫脱硝
分类号:X021 文献标识码:A
文章编号:1004-9649(2008)02-0055-05
Simultaneous desulphurization and denitrification from flue gas by highly active absorbent
ZHAO Yi MA Xiao-ying LIU Song-tao WANG Li-dong MA Shuang-chen
作者简介:赵毅(1956-),男,河北秦皇岛人,教授,博士生导师,从事大气污染控制研究工作.E-mail:Zhaoyi9515@163.com
作者单位:赵毅(华北电力大学,环境科学与工程学院,河北,保定,071003)
马宵颖(华北电力大学,环境科学与工程学院,河北,保定,071003)
刘松涛(华北电力大学,环境科学与工程学院,河北,保定,071003)
汪黎东(华北电力大学,环境科学与工程学院,河北,保定,071003)
马双忱(华北电力大学,环境科学与工程学院,河北,保定,071003)
参考文献:
[1]LI T C,NIU H S.Desulfurization and denitrification using activated carbons[J].Xinxing Tan Cailiao/New Carbon Materials,2005,20(2):178-182.
[2]GAO Shi-qiu,NAKAGAWA N,KATO K,et al.Simultaneous SO2/NOx removal by a powder-particle fluidized bed[J].1996,29 (1~4):165-169.
[3]纪晓雯.燃煤烟气脱硫脱硝一体化技术的研究与应用[J].能源与环境,2004(4):53-56.JI Xiao-wen.Research and application of integrated coal desulfurization and denitrization technology[J].Energy and Environment,2004,(4):53-56.
[4]刘清雅,刘振宇.蜂窝状堇青石基CuO/Al2O3催化剂用于烟气同时脱硫脱硝的研究[J].燃料化学学报,2004,32(3):257-262.LIU Qing-ya,LIU Zhen-yu.Honeycomb cordierite-based CuO/Al2O3 catalyst for simultaneous SO2 and NO removal from flue gas[J].Journal of Fuel Chemistry and Technology,2004,32 (3):257-262.
[5]孙小军.烟气循环流化床同时脱硫脱氮技术研究[D].保定:华北电力大学,2004.SUN Xiao-jun.Study on simultaneous removal of SO2 and NO from flue gas by CFB[D].Baoding:North China Electric Power University.2004.
[6]马双忱.烟气循环流化床脱硫技术实验研究[D].保定:华北电力大学,2003.MA Shuang-chen.Experimental study on desulfurization technology by flue gas CFB[D].Baoding:North China Electric Power University.2003.
[7]ZAMANSKY V M,HO L,MALY P M,et al.Gas phase reactions of hydrogen peroxide and hydrogen peroxide/methanol mixtures with air pollutants[J].Symposium (International) on Combustion,1996 (2):2 125-2 132.
[8]CHITONNA R J,ALTSHULER B.Chemical aspects of NOx scrubbing[J].Pollut.Eng.,1998,31 (4):32-37.
[9]CHIEN Tsung-Wen,CHU H.Removal of SO2 and NO from flue gas by wet scrubbing using an aqueous NaClO2 solution[J].Journal of Hazardous Materials,2000,80(1~3):43-57.
[10]COLLINS M M,COOPER C D,DIETZ J D,et al.Pilotscale evaluation of H2O2 injection to control NOx emissions[J].Journal of Environmental Engineering,2001,127 (4):329-336.
[11]CHEN L,LIN Jin-wei,YANG Chen-lu.Absorption of NO2 in a packed tower with Na2SO3 aqueous solution[J].Environmental Progress,2002,21 (4):225-230.
[12]HSIN Chu,CHIEN Tsung-wen; TWU Bour-wei.Simultaneous absorption of SO2 and NO in a stirred tank reactor with NaClO2/NAOH solutions[J].Water,Air,and Soil Pollution,2003,143 (1~4):337-350.
[13]HSIN Chu,CHIEN Tsung-wen.The absorption kinetics of NO in NaClO2/NaOH solutions[J].Journal of Hazardous Materials,2001(84):241-252.
[14]赵毅,马双忱,黄建军,等.高活性吸收剂脱硫和脱氮实验及机理研究[J].中国电机工程学报,2003,23(10):236-240.ZHAO Yi,MA Shuang-chen,HUANG Jian-jun,et al.Experimental study on SO2 and NOx removal and mechanism by highly reactive sorbent[J].Proceedings of the CSEE,2003,23 (10):236-240.
[15]樊保围,项光明,祁海鹰,等.常温循环流化床烟气脱硫影响脱硫效率的参数及机理[J].燃烧科学与技术,2001,3(7):228-232.FAN Bao-guo,XIANG Guang-ming,QI Hai-ying,et al.Domintant influence parameters on the FGD efficiency and desulphurization mechanism in Circulating Fluidized Bed in ambient temperature[J].Journal of Combustion Science and Technology,2001,3 (7):228-232.
|