600 MW机组锅炉前屏过热器吸热偏差诊断及优化调整  

Diagnosis and Optimal Adjustment on Heat Absorption Deviation of Front Platen Superheater of 600 MW Unit Boiler

作　　者：王小华[1] 陈春华 朱鹏 赵鹏 俞胜捷 陈敏[1] WANG Xiaohua;CHEN Chunhua;ZHU Peng;ZHAO Peng;YU Shengjie;CHEN Min(Xi’an Thermal Power Research Institute Co., Ltd. Suzhou Branch, Suzhou 215153, China;Fujian Yongfu Electric Power Design Inc., Fuzhou 350001, China;Huaneng International Power Limited by Share Ltd Jinggangshan Power Plant, Ji’an 343009, 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]福建永福电力设计股份有限公司,福建福州350001 [3]华能国际电力股份有限公司井冈山电厂,江西吉安343009

出　　处：《锅炉技术》2020年第6期18-22,共5页Boiler Technology

摘　　要：以某台600 MW超临界机组锅炉为研究对象,分析了造成前屏过热器吸热偏差的根本原因,并研究了SOFA风水平摆角、磨煤机组合方式和煤种等因素对前屏过热器吸热和燃烧偏差的影响特性。优化调整后,600 MW、450 MW和300 MW 3个负荷下,前屏过热器出口两侧汽温偏差值由调整前的17.4℃、33.9℃和21.3℃降低至10.2℃、7.6℃和3.5℃;同时,省煤器出口截面氧量偏差值由调整前的0.87%、1.44%和0.26%减小至0.08%、0.38%和0.21%,优化效果显著。该研究成果将应用于指导锅炉运行优化调整。In this paper,a 600 MW supercritical unit boiler is taken as the research object.The root cause of heat absorption deviation of front platen superheater is analyzed,and the effects of SOFA horizontal swing angle,mill combination mode and coal type on heat absorption deviation of front platen superheater and combustion are studied.After optimization and adjustment,the steam temperature deviation at the outlet of the front platen superheater decreases from 17.4℃,33.9℃and 21.3℃to 10.2℃,7.6℃and 3.5℃at 600 MW,450 MW and 300 MW.At the same time,the oxygen deviation at the outlet of the economizer decreases from 0.87%,1.44%and 0.26%to 0.08%,0.38%and 0.21%,so the optimization is remarkable.The research results will be applied to guide the optimization of boiler operation.

关 键 词：燃煤锅炉 切圆燃烧 SOFA风水平摆角 前屏过热器吸热偏差 CO含量 优化调整 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]