Conversion of Fuel-N to N2O and NOx during Coal Combustion in Combustors of Different Scale

doi:10.1016/S1004-9541(13)60571-6

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (9): 999-1006.DOI: 10.1016/S1004-9541(13)60571-6

• 催化、动力学与反应工程 • 上一篇下一篇

Conversion of Fuel-N to N₂O and NO_x during Coal Combustion in Combustors of Different Scale

周昊, 黄燕, 莫桂源, 廖子昱, 岑可法

State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China

收稿日期:2011-09-05 修回日期:2012-04-27 出版日期:2013-09-28 发布日期:2013-10-01
通讯作者: ZHOU Hao
基金资助:
Supported by the National Basic Research Program of China (2009CB219802)

Conversion of Fuel-N to N₂O and NO_x during Coal Combustion in Combustors of Different Scale

ZHOU Hao, HUANG Yan, MO Guiyuan, LIAO Ziyu, CEN Kefa

State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China

Received:2011-09-05 Revised:2012-04-27 Online:2013-09-28 Published:2013-10-01
Contact: ZHOU Hao
Supported by:
Supported by the National Basic Research Program of China (2009CB219802)

摘要/Abstract

摘要： With focus on investigating the effect of combustor scale on the conversion of fuel-N to NO_x and N₂O, experiments are carried out in three combustors, including single coal particle combustion test rig, laboratory scale circulating fluidized-bed boiler (CFB) and full scale CFB in this work. For single coal particle combustion, the majority of fuel-N (65%-82%) is released as NO_x, while only a little (less than 8%) fuel-N yields N₂O. But in laboratory scale CFB, the conversion of fuel-N to N₂O is increases, but the conversion of fuel-N to NO_x is quite less than that of single coal particle combustion. This is because much char in CFB can promote the NO_x reduction by increasing N₂O formation. In full scale CFB, both of the conversion of fuel-N to NO_x and the conversion of fuel-N to N₂O are smaller than laboratory scale CFB.

关键词: fuel-N, N₂O, NO_x, coal, fluidized bed

Abstract: With focus on investigating the effect of combustor scale on the conversion of fuel-N to NO_x and N₂O, experiments are carried out in three combustors, including single coal particle combustion test rig, laboratory scale circulating fluidized-bed boiler (CFB) and full scale CFB in this work. For single coal particle combustion, the majority of fuel-N (65%-82%) is released as NO_x, while only a little (less than 8%) fuel-N yields N₂O. But in laboratory scale CFB, the conversion of fuel-N to N₂O is increases, but the conversion of fuel-N to NO_x is quite less than that of single coal particle combustion. This is because much char in CFB can promote the NO_x reduction by increasing N₂O formation. In full scale CFB, both of the conversion of fuel-N to NO_x and the conversion of fuel-N to N₂O are smaller than laboratory scale CFB.

Key words: fuel-N, N₂O, NO_x, coal, fluidized bed

周昊, 黄燕, 莫桂源, 廖子昱, 岑可法. Conversion of Fuel-N to N₂O and NO_x during Coal Combustion in Combustors of Different Scale[J]. Chinese Journal of Chemical Engineering, 2013, 21(9): 999-1006.

ZHOU Hao, HUANG Yan, MO Guiyuan, LIAO Ziyu, CEN Kefa. Conversion of Fuel-N to N₂O and NO_x during Coal Combustion in Combustors of Different Scale[J]. Chin.J.Chem.Eng., 2013, 21(9): 999-1006.

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Conversion of Fuel-N to N₂O and NO_x during Coal Combustion in Combustors of Different Scale

Conversion of Fuel-N to N₂O and NO_x during Coal Combustion in Combustors of Different Scale

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