论文编号:RN007 论文字数:12688,页数:18
论文题目：600MW发电机组劣质煤稳定燃烧调节技术
摘 要
本文通过发耳发电厂4台600MW火电机组长期燃烧高硫高灰劣质煤的相关经验，进一步研究锅炉燃烧相关劣质煤种的稳定燃烧调节技术。对于易结焦积灰煤种主要采用较小假想切圆直径、提高一次风粉气流刚性、较小的煤粉细度技术；对于高硫低发热量低挥发分煤种主要从一次风速合理控制、一二次风速交汇点选择、各层二次风的合理分配、投油时机选择技术等方面进行了理论联系实际的深入剖析。对于燃烧同类煤种的火力发电机组的稳定运行和提高机组的经济性方面具有较强的借鉴指导意义。
关键词：锅炉 劣质煤 燃烧调节
论文类型：经济性研究应用
Title: 600MW generating units of inferior coal combustion stability regulation technology
ABSTRACT
This paper introduces the experience of burning high sulfur and high ash coal in Fa’er 4× 600MW power plant，and research inferior coal combustion stability control technology。When burning the coal that easy coking ，the main method is to use smaller imaginary circle diameter，improving the stiffness of primary air and coal mixture，select small fineness of pulverized coal；When burning the coal with high sulfur，low heat value and low volatile matter，mainly from the controling of primary air speed，choosing the intersection of primary air and secondary air， reasonabler distribution of secondary air，choosing the opportunity of inputing fuel oil。It is very meaningful to thermal power plant that burning the same type of coal。
Key words: Boiler inferior coal Combustion regulation
Type of thesis: Economic research and application
目 录
摘 要……………………………………………………………………………………….IV
目 录……………………………………………………………………………………….VI
1 绪论……………………………………………………………………………………….1
1.1 应用背景…………………………………………………………………………….1
1.2 选题意义…………………………………………………………………………….1
2 国内外劣质煤燃烧调节技术现状……………………………………………………….2
2.1 我国煤炭资源现状………………………………………………………………….2
2.2 国外锅炉劣质煤研究现状………………………………………………………….2
3 劣质煤燃烧具体技术措施……………………………………………………………….3
3.1 我厂锅炉总体概况………………………………………………………………….3
3.2 防止受热面积灰、结焦的技术措施………………………………………………...3
3.2.1 受热面积灰结焦对锅炉的危害………………………………….………….3
3.2.2受热面积灰结焦的处理方案………………………………………….……..4
3.3 给煤机断煤的处理技术措施……………………………………………………….4
3.3.1 给煤机断煤对锅炉稳定运行的影响………………………………………..4
3.3.2给煤机断煤后的协调处理…………………………………………………..5
3.4 控制过、再热器的超温…………………………………………………………….5
3.4.1过再热器超温的危害………………………………………………………..5
3.4.2 过再热器超温的具体调节………………………………………………….6
3.5 小结…………………………………………………………………………………6
4 稳定锅炉燃烧的对应技术措施………………………………………………………….7
4.1 一次风量和一次风速控制调节…………………………………………………….7
4.2 控制好二次风与一次风交汇点…………………………………………………….8
4.3 合理分配各层二次风……………………………………………………………….8
4.4 各种工况下氧量和风量具体制…………………………………………………….9
4.4.1 不同负荷下的氧量控制…………………………………………………….9
4.4.2 燃用劣质煤时各给煤机煤量控制………………………………………….9
4.5 各给煤机煤量控制………………………………………………………………...10
4.6 防止炉膛灭火放炮的措施………………………………………………………...11
4.7 小结……………………………………………………………………………….. 11
5 结论与展望……………………………………………………………………………...12
致谢………………………………………………………………………………………..13
参考文献………………………………………………………………………………...14
600MW发电机组劣质煤稳定燃烧调节技术......