燃煤锅炉飞灰可燃物质量分数偏高的原因分析及对策

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英文篇名：Analysis on reasons of higher mass fraction of combustibles in fly ash of coal-fired boiler and countermeasures 中文刊名：华电技术 英文刊名：Huadian Technology 作者：何文波 ; 尹铁兵 英文作者：HE Wenbo ; YIN Tiebing(Hunan Huadian Changsha Power Generation Company Limited ; Changsha 410203 ; China) 中文关键词：燃烧调整 ; 飞灰可燃物 ; 掺配 ; 旋流煤粉燃烧器 英文关键词：combustion regulation ; combustibles in fly ash ; blending ; swirl pulverized coal burner 出版日期：2013-07-25 机构：湖南华电长沙发电有限公司; 年：2013 期：07 出版单位：华电技术

摘要

电厂来煤复杂多变、燃煤品质严重偏离设计值,导致锅炉飞灰可燃物质量分数居高不下。采取规范燃煤掺配管理、根据不同煤种调整HT-NR3型旋流煤粉燃烧器配风和限制无烟煤一次风速等措施后,在入炉煤保持1/3无烟煤、2/3烟煤的情况下,锅炉飞灰可燃物质量分数可控制在3%左右。
The incoming coal of a power plant is complex and variable,and the quality of the incoming coal is far deviated from the designed value,which causes the mass fraction of combustibles in fly ash of the boiler to staying at a high level.Some measures were adopted,which includes to normalize the coal blending management,to adjust the air distribution of the HT-NR3 swirl pulverized coal burner according to different coal type and to control the first air speed for blind coal,and when a third of incoming coal is blind coal and two-thirds are bituminous coal,the mass fraction of combustibles in fly ash of the boiler can be controlled at about three percents.

引文

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