SCR烟气脱硝系统运行全过程数据分析  

Analysis on whole process operation data of SCR flue gas denitration system

作　　者：梁俊杰[1] 张战锋[2] 周健[1] 鲍强[1] 卢承政[1] 李斌 朱德力[1] LIANG Junjie;ZHANG Zhanfeng;ZHOU Jian;BAO Qiang;LU Chengzheng;LI Bin;ZHU Deli(Xi’an Thermal Power Research Institute Co., Ltd., Suzhou Branch, Suzhou 215153, China;Fuzhou Power Plant, Huaneng International Power Co., Ltd., Fuzhou 350299, China;Baotou Third Thermal Power Plant, North United Power Co., Ltd., Baotou 014060, China)

机构地区：[1]西安热工研究院有限公司苏州分公司,江苏苏州215153 [2]华能国际电力股份有限公司福州电厂,福建福州350299 [3]北方联合电力有限责任公司包头第三热电厂,内蒙古包头014060

出　　处：《热力发电》2018年第12期93-99,共7页Thermal Power Generation

摘　　要：通过对多台机组脱硝系统运行数据的汇总分析,指出不同燃烧方式以及运行控制方式下,脱硝系统出口氨逃逸存在差异,导致空气预热器等下游设备硫酸氢铵(ABS)堵塞情况存在明显差异,说明从锅炉燃烧、脱硝设备、烟气流动与混合等方面进行全过程优化管理的必要性及重要性。针对脱硝系统超低排放改造后集中出现的空气预热器ABS堵塞等次生问题,建议采用全过程管理理念,从源头控制氨逃逸,提高脱硝系统运行水平。Through summary analysis on operation data of several units'denitration system,this paper points out that there are differences in ammonia escape at outlet of the denitration equipments in different combustion modes and operation control modes.As a result,there is obvious difference in ammonium bisulfate(ABS)plugging in downstream equipments like the air preheater,indicating it is necessary and important to optimize the whole process from the aspects of boiler combustion,denitration equipment,and flue gas flow and mixing.To solve the secondary problem like the ABS blockage in air preheater after ultra-low emission retrofitting of the denitration system,it is suggested that the whole process management concept be adopted to control ammonia escape from the source and improve the operation level of the denitration system.

关 键 词：SCR 硫酸氢铵 氨逃逸 NOx平衡质量浓度 氨氮摩尔比 喷氨控制 

分 类 号：X701[环境科学与工程—环境工程]