PDF《超临界 600 MW 循环流化床锅炉 燃用不同煤种燃烧特性及排...》

第46 卷第4期热力发电Vol.

46 No.4

2017 年4月THERMAL POWER GENERATION Apr.

2017 收稿日期:2016-07-07 基金项目:神华科技创新项目资助(SHJT-13-35) Supported by:Shenhua Science and Technology Innovation Project (SHJT-13-35) 第一作者简介:金森旺(1979―) ,男,硕士,工程师,主要研究方向为循环流化床锅炉及清洁煤发电技术开发与应用, [email protected]. 超临界

600 MW 循环流化床锅炉 燃用不同煤种燃烧特性及排放特性试验 金森旺

1 ,高洪培

1 ,孙献斌

1 ,时正海

1 ,肖平1,李昱

1 ,唐俊2,谢泽良

2 ,邝伟2,陈建斌

2 (1.中国华能集团清洁能源技术研究院有限公司,北京 102209;

2.四川白马循环流化床示范电站有限责任公司,四川 内江 641005) [摘要]在超临界

600 MW 循环流化床(CFB)锅炉上,对锅炉燃用不同煤质时的燃烧特性、排放 特性和适应性进行了研究.结果表明:锅炉主辅机系统具有良好的煤种适应特性;

锅炉燃 用不同试验煤种均具有较高的燃烧效率, 纯烧神华烟煤最高, 为97.94%, 纯烧设计煤最低, 为94.76%,掺烧煤介于两者之间;

锅炉采用炉内干法脱硫工艺,脱硫效率最高 98.2%,最低94.8%,各试验工况 SO2 排放值均低于

300 mg/m3 ,NOx 排放值均低于

200 mg/m3 ,满足 现阶段污染物排放要求;

点火试验表明设计煤的着火温度为

430 ℃,着火温度中等. [关键词]CFB 锅炉;

燃烧特性;

排放特性;

碳燃尽率;

燃烧效率;

热效率 [中图分类号]TK221;

X51 [文献标识码]A [文章编号]1002-3364(2017)04-0046-06 [DOI 编号]10.3969/j.issn.1002-3364.2017.04.046 Experimental study on combustion and emission characteristics of a supercritical

600 MW unit CFB boiler firing different coals JIN Senwang1 , GAO Hongpei1 , SUN Xianbin1 , SHI Zhenghai1 , XIAO Ping1 , LI Yuzhe1 , TANG Jun2 , XIE Zeliang2 , KUANG Wei2 , CHEN Jianbin2 (1. China Huaneng Clean Energy Research Institute Co., Ltd., Beijing 102209, China;

2. Sichuan Baima CFB Demonstration Power Plant Co., Ltd., Neijiang 641005, China) Abstract: The combustion properties, emission characteristics and adaptability of a supercritical

600 MW unit CFB boiler firing different coals were studied. The test results show that, the main equipment and auxiliary system of the boiler has well adaptability to the coal type. When burning different kinds of coals, the boiler has relatively high combustion efficiency. The combustion efficiency reached the highest 97.94% when firing pure Shenhua coal and the lowest 94.76% when firing the pure design coal, it is within the range when firing blended coals. The boiler applies the dry desulfurization process, with the highest desulfurization efficiency of 98.2% and the minimum of 94.8%. Under all test conditions, the SO2 emissions were lower than

300 mg/m3 , and the NOx emissions were lower than

200 mg/m3 , which meets the requirements of environmental emission limits at the present stage. The ignition test shows the ignition temperature of the design coal is

430 ℃, which is medium. Key words: CFB boiler, combustion characteristics, emission characteristics, carbon burnout rate, combustion efficiency, thermal efficiency 超临界循环流化床(CFB)锅炉由于具有和煤粉 锅炉相当的热效率,且燃料适应性好,同时还能够 以比较经济的方式达到低 SO2 及NOx 排放, 因此成 为清洁煤发电技术的重要发展方向之一[1-2] . "十一 五" 期间, 我国自主研究开发了超临界