Analysis on the Steam Temperature Deviation of Water Wall and the Countermeasures of Design and Operation for a 1000MW Ultra Supercritical Boiler With Opposed Firing

被引：0

作者：

Nie X. ^{[1
]}

Yang D. ^{[1
]}

Lü H. ^{[2
]}

Zhang S. ^{[2
]}

Huang H. ^{[2
]}

Yun P. ^{[3
]}

Yang P. ^{[3
]}

Zhou K. ^{[3
]}

机构：

[1] State Key Laboratory of Multiphase Flow in Power Engineering (Xi'an Jiaotong University), Xi'an, 710049, Shaanxi

[2] Henan Electric Power Generation Limited Company, State Power Investment Corporation, Zhengzhou, 450001, Henan

[3] Xi'an Thermal Power Research Institute Co., Ltd, Xi'an, 710054, Shaanxi

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2019年 / 39卷 / 03期

关键词：

1000MW; Boiler water wall; Coal pulverize; Endothermic deviation test; Hydrodynamic; Mass flow rate; Steam temperature deviation; Ultra supercritical;

D O I：

10.13334/j.0258-8013.pcsee.180582

中图分类号：

学科分类号：

摘要：

The hydrodynamic calculation and experimental study were carried out for the water wall steam temperature deviation in the furnace of the 1000 MW ultra supercritical boiler. Based on the boiler structure and combustion mode, a network system mathematical model of a 1000MW boiler was established. According to the flow loop, the relevant test points were arranged on site. The law of the various factors on the wall temperature deviation was explored through the field test of startup of boilers, the experiment on different working ways of coal pulverizers and the mixing effect test of mixed boxes, combined with the results of the hydrodynamic calculation. The results of the study indicates that the higher increased rate of boilers load and local heat load lead to large steam temperature deviation at outlet of furnace and the increased rate of boilers load should be not more than 25MW/min during startup of boilers. Besides, through the experiment on different working ways of coal pulverizers, the pulverizers working ways of BCEF and ABCEF are recommended. It appears that the mixed boxes have a good mixing effect between 50% BMCR load and 100%BMCR load in the middle transition section. In terms of boiler structure design, in order to improve the hydrodynamic adaptability of the front wall of the upper furnace, the flow cross-sectional area of the front wall should be increased. © 2019 Chin. Soc. for Elec. Eng.

引用

页码：744 / 753

页数：9

共 19 条

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