电站燃煤锅炉全负荷SCR脱硝控制技术探讨  

Discussion about SCR Denitration Control Technology under Full Load in a Coal-fired Boiler

作　　者：黄文静 戴苏峰 艾春美 康志宏 

机构地区：[1]上海电力股份有限公司闵行发电厂工程部,上海200245 [2]上海电力股份有限公司工程部,上海200010

出　　处：《节能技术》2015年第2期189-192,F0003,共5页Energy Conservation Technology

摘　　要：为了解决燃煤电站锅炉在低负荷时由于SCR入口烟温低于SCR催化剂正常工作温度窗口而导致脱硝系统无法投运的问题,主要对策有增加省煤器旁路、提高锅炉给水温度、省煤器分级技术以及开发宽温度窗口SCR脱硝催化剂。这些方法能在一定程度上改善低负荷SCR脱硝系统运行情况,目前国内所采用的省煤器旁路烟道等技术是以牺牲一定的经济性为代价的,高效节能锅炉全负荷SCR脱硝控制技术的研究对于逐步改善周围大气环境质量具有显著的经济效益和社会效益。本文旨在为燃煤锅炉进行全负荷SCR脱硝控制提供参考。SCR de-NOx system can not work normally because temperature of SCR inlet flue gas is too low when the unit is under low load. The measures to solve the problem is installing economizer bypass,raising boiler feed-water temperature,economizer classification technology and developing SCR denitration catalyst which can be used under wide temperature range. Economizer bypass technology adopted at home now will lead to low unit efficiency. Study of energy-efficient low NOx emission technology has significant economic and social benefit on improving the atmospheric environment quality. This paper aims at providing reference of controlling NOx emission under full load for coal-fired boiler.

关 键 词：燃煤锅炉 SCR催化剂 NOX排放 SCR入口烟温 全负荷SCR脱硝控制技术 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]