锅炉旁路烟道脱硝入口烟温自动控制系统设计与分析  

Design and Analysis of Automatic Control System for Flue Gas Temperature at Denitrification Inlet of Boiler Bypass Flue

作　　者：葛朋 刁云鹏 夏志 司瑞才 王松寒 GE Peng;DIAO Yunpeng;XIA Zhi;SI Ruicai;WANG Songhan(CHN Energy Shuangliao Gengerating Co..Ltd.,Shuangliao 136400,China;State Grid Jilin Electric Power Co.,Ltd..Changchun 130022,China;State Grid Jilin Electric Power Co.,Ltd. Electric Power Research Institute,Changchun 130021,China)

机构地区：[1]国家能源集团双辽发电有限公司,吉林双辽136400 [2]国网吉林省电力有限公司,长春130022 [3]国网吉林省电力有限公司电力科学研究院,长春130021

出　　处：《吉林电力》2019年第3期40-42,56,共4页Jilin Electric Power

摘　　要：针对锅炉低负荷运行时段,脱硝系统入口烟气温度低于催化剂正常使用温度的问题,对现有的旁路烟道挡板调节进行改进,以国家能源集团双辽发电有限公司机组为例,通过对分散控制系统PID控制算法中放大倍数和积分时间的适当调整,使锅炉在30%~100%负荷区段运行时脱硝系统能够可靠地连续投入。For the low-load operation period of the boiler, the inlet flue gas temperature of the SCR denitrification system is lower than the normal use temperature of the catalyst, and the adjustment of the existing bypass flue baffle is improved, and the unit of the CHN Energy Shuangliao Gengerating Co.?Ltd. for example, by appropriately adjusting the magnification and integration time in the DCS PID control algorithm, the SCR can be reliably and continuously input when the boiler is operated in the 30% to 100% load section.

关 键 词：脱硝系统 旁路挡板 烟气温度 自动控制 逻辑 

分 类 号：TK323[动力工程及工程热物理—热能工程]