Research on key technologies and design plan of high-temperature CFB boiler

SUN Xianbin; LIN Weirong; HAN Ying; LIU Haifeng; ZHAO Pengbo; JIN Senwang; SHI Zhenghai; WANG Haitao

doi:10.19666/j.rlfd.201911068

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Research on key technologies and design plan of high-temperature CFB boiler

Thermal Power Generation Vol. 49, Issue 5, Pages: 1-6(2020)

更新时间：2025-09-28

- Research on key technologies and design plan of high-temperature CFB boiler
- 作者机构：
  
  中国华能集团清洁能源技术研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201911068
  CLC： TK222;TK223
- Published Online：27 April 2020，
  
  Published：2020
- 稿件说明：
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SUN Xianbin, LIN Weirong, HAN Ying, et al. Research on key technologies and design plan of high-temperature CFB boiler[J]. Thermal Power Generation, 2020, 49(5): 1-6.
DOI：

SUN Xianbin, LIN Weirong, HAN Ying, et al. Research on key technologies and design plan of high-temperature CFB boiler[J]. Thermal Power Generation, 2020, 49(5): 1-6. DOI： 10.19666/j.rlfd.201911068.

摘要

为提高燃用难燃煤种的循环流化床(CFB)锅炉的燃烧效率

提出了高温型CFB锅炉的技术概念

建立了高温型CFB试验研究平台

在该CFB试验台上研究了难燃煤种的高温燃烧及污染物排放特性。试验结果表明

炉内燃烧温度提高可较明显地降低难燃煤种的飞灰可燃物质量分数

提高燃烧效率;但随着运行床温的升高

脱硫效率下降

NO_x排放值有所增加。在试验研究的基础上

对高温型超超临界660 MW CFB锅炉技术方案进行了设计研究

并对锅炉方案中的6个旋风分离器的灰颗粒流量分配特性进行了数值模拟

确定了旋风分离器的优化布置方式

为后续的高温型超超临界660 MW CFB锅炉结构设计及工程应用奠定了技术基础。

Abstract

In order to improve the combustion efficiency of circulating fluidized bed(CFB) boiler firing hard-toburn coal

the technical concept of high-temperature CFB boiler was put forward

and a high-temperature CFB experimental research platform was established. Moreover

high-temperature combustion and pollutant emission characteristics were researched in the CFB test facility for hard-to-burn coal. The experimental research result shows that

increasing the combustion temperature can obviously reduce combustible matter mass fraction in fly ash and increase the combustion efficiency for hard-to-burn coal. However

as the operating bed temperature increases

the desulfurization efficiency decreases and the NO_x emission increases. Based on experimental research result

technical plan of ultra-supercritical 660 MW high-temperature CFB boiler was designed and researched

and the distribution characteristics of ash particle flow of six cyclone separators in the boiler scheme was simulated numerically. Finally

the optimum layout of cyclone separators was determined

which laid a technical foundation for the subsequent structural design and engineering application of ultra-supercritical 660 MW high-temperature CFB boiler.

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