燃用高碱煤锅炉受热面结焦及其防治研究概述  

An overview of the research on heating surface coking of boilers burning high-alkali coal and its prevention

作　　者：李巍[1] 李太江[1] 娄正计 李志强 高壮 许冬亮[2] 刘贺佳 周昊[4] 李聚涛 LI Wei;LI Taijiang;LOU Zhengji;LI Zhiqiang;GAO Zhuang;XU Dongliang;LIU Hejia;ZHOU Hao;LI Jutao(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Huaneng(Tianjin)Coal Gasification Power Generation Co.,Ltd.,Tianjin 300452,China;Hebei Hanfeng Power Generation Co.,Ltd.,Handan 056200,China;Tianjin Huaneng Yangliuqing Power Co.,Ltd.,Tianjin 300380,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]华能(天津)煤气化发电有限公司,天津300452 [3]河北邯峰发电有限责任公司,河北邯郸056200 [4]天津华能杨柳青热电有限责任公司,天津300380

出　　处：《热力发电》2024年第1期13-23,共11页Thermal Power Generation

基　　金：中国华能集团有限公司总部科技项目(HNKJ21-HF59,HNKJ22-H78,HNKJ22-HF07,HNKJ22-HF02)。

摘　　要：以准东煤为代表的高碱煤虽储量巨大,但火电机组掺烧高碱煤过程中造成锅炉受热面结焦问题突出,不仅降低锅炉热效率,而且严重威胁机组安全、稳定、经济运行。为解决结焦技术难题,促进高碱煤掺烧利用,对燃用高碱煤锅炉受热面结焦及其防治研究进行了综述。截至目前,国内外围绕燃煤锅炉受热面结焦特征、结焦机理、影响因素、防治措施等已经开展了广泛研究并取得了丰硕的研究成果。在控制燃煤质量、改善锅炉结构、优化锅炉运行等措施基础上,在锅炉受热面制备涂层成为防治结焦的重要技术途径。在未来研究过程中,涂层在具备突出抗结焦性能的同时,须兼具优良的耐高温、抗腐蚀、耐磨损、导热性、热疲劳等综合性能,且具有良好的制备经济性、制备效率,特别是现场适用性。Although the reserves of high-alkali coal represented by Zhundong coal is huge,the problem of coking on heating surface of the boiler is prominent during co-firing high-alkali coals in thermal power units,which not only reduces the boiler thermal efficiency,but also seriously threatens the safe,stable and economic operation of the unit.In order to solve this problem and promote the utilization of high-alkali coal,this paper reviews the researches on coking of the heating surface of high-alkali coal boilers and the prevention.Up to now,extensive researches have been carried out at home and abroad on the characteristics of coking on the heating surface of coalfired boilers,coking mechanism,influencing factors,prevention and control measures,and so on,and fruitful research results have been achieved.On the basis of controlling the quality of coal,improving boiler structure,and optimizing boiler operation,the preparation of coating on the heating surface of boilers has also become an important technical path for preventing and controlling coking.In the future,the coating should possess excellent comprehensive properties such as high temperature resistance,corrosion resistance,wear resistance,thermal conductivity,thermal fatigue and so on,while having outstanding coking resistance.Meanwhile,the coating also should have desirable preparation economy and preparation efficiency,especially the on-site applicability.

关 键 词：燃煤锅炉 结焦 机理 高碱煤 涂层 

分 类 号：TM621.2[电气工程—电力系统及自动化]