改善煤粉分配均匀性措施的研究

华电技术 ›› 2010, Vol. 32 ›› Issue (2): 29-30.

改善煤粉分配均匀性措施的研究

张沪香

望亭发电厂，江苏苏州215155

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-02-25

Study on improving measures for pulverized coal distribution evenness

ZHANG Huxiang

Wangting Power Plant, Suzhou 215155,China

Received:1900-01-01 Revised:1900-01-01 Published:2010-02-25

摘要/Abstract

摘要： 望亭发电厂 #11锅炉制粉系统改善煤粉分配均匀性措施后,取得了很好的效果，四角各层煤粉管内风量和粉量的最大偏差分别不超过±10%，为改善炉膛出口两侧烟气偏差和实现低NOx燃烧以及锅炉低负荷稳燃创造了良好的条件。目前，高温再热器前两侧烟温的偏差基本控制在15℃之内运行，至今未发生煤粉管堵塞、受热面超温爆管和其他不良现象，飞灰含碳量逐年好转。

关键词: 浓度偏差发, 煤粉分配器, 优化燃烧

Abstract: Good results have been obtained after reforming the pulverized coal system of #11 boiler in Wangting Power Plant. The maximum deviation of air and coal powder in deferent layer was less than ±10%, which is favorable for the balance of flue gas flow from two sides of furnace outlets, implementation of low NOx emission and steady combustion in boiler lowload. Now flue gas temperature deviations between two sides before hightemperature reheater are controlled in 15℃. No blockage in pulverized coal pipe, no overtemperature tubebursting and other bad phenomenon have been occurred until now, and unburned carbon content in the fly ash has decreased year by year.

Key words: concentration deviation, pulverized coal distributor, optimizing combustion

张沪香. 改善煤粉分配均匀性措施的研究[J]. 华电技术, 2010, 32(2): 29-30.

ZHANG Huxiang. Study on improving measures for pulverized coal distribution evenness[J]. Huadian Technology, 2010, 32(2): 29-30.

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