scr脱硝性能影响因素及维护.pdf

23 2 Vol. 23 No.2 2008 4 JOURNAL OF SHANDON JIANZHU UNIVERSITY Apr. 2008 : 1673- 7644(2008) 02- 0145- 05 SCR 陈海林, 宋新南, 江海斌, 崔志坤, 张国芳 ( , 212013) :, SCR( ) , SCR ,: ; ;, SCR SCR :;SCR; :TK17 :A Maintenance and affecting factors for the performance of SCR system CHEN Hailin, SON Xinnan, JIAN Haibin, et al . ( School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China) Abstract:The pollution of nitrogen oxidebecomes more and more serious in China; Coalfired power plants are to be equipped withSCR (the Selective Catalyst Reduction) systems to decreasepollution gradually. The paper introduced the principles of SCR system, affecting factors of its performance and their solution, mainly includ ing the component of catalyst and analysis about its characteristic, ammonia slip, oxidation of sulfur dioxide and its impact on the downstream air preheater,and the influenceof thetemperature and velocity of boiler flue gas to SCR system, and summarized themethods to maintain the SCR device. The experiments makereferenc es for the improvement of efficiency of Chinas SCR system. Key words:flue gas denox ; SCR; nitrogen oxide 0 ,NO x (HNO ) , (H SO ) , 3 2 4 [ 1] , , NOx VOC , , , ,O , 3 [2] , ,, , , , , : 200