Influence of evaporating and heat absorption proportion on design of 700 ℃ ultra-supercritical boilers

WANG Chunchang Xi'an Thermal Power Research Institute Co.

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Influence of evaporating and heat absorption proportion on design of 700 ℃ ultra-supercritical boilers

更新时间：2025-09-28

- Influence of evaporating and heat absorption proportion on design of 700 ℃ ultra-supercritical boilers
- Thermal Power Generation Vol. 42, Issue 1, Pages: 59-62(2013)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.2
- Published：2013
- 稿件说明：
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WANG Chunchang Xi'an Thermal Power Research Institute Co.. Influence of evaporating and heat absorption proportion on design of 700 ℃ ultra-supercritical boilers[J]. Thermal power generation, 2013, 42(1): 59-62.
DOI：

WANG Chunchang Xi'an Thermal Power Research Institute Co.. Influence of evaporating and heat absorption proportion on design of 700 ℃ ultra-supercritical boilers[J]. Thermal power generation, 2013, 42(1): 59-62. DOI：

摘要

与600℃超超临界机组相比

700℃超超临界机组使锅炉蒸发段的吸热比例明显下降

其原因是炉侧烟气释放给水冷壁的纯辐射放热比例无法跟随700℃机组的锅内侧蒸汽吸热比例进行下调

锅内侧的过热度参数选择以及受热面的布置与现役600℃超超临界机组锅炉差异较大。因此

选择合适的过热度、布置蒸汽系统的受热面或设计新的过热器或再热器系统是700℃超超临界机组锅炉需要研究的重点课题。

Abstract

Compared with 600 ℃ ultra-supercritical units

the heat absorption rate of evaporating section on boiler of the 700 ℃ unltra-supercritical unit decreases significantly.The proportion of pure radiant heat released by gas to the water wall can not be decreased by the heat absorption rate of steam in 700 ℃ unit boiler

so the superheating ratio selection and the heating surface arrangement had large difference with that of the present 600 ℃ ultra-supercritical unit boiler.Therefore

selecting a suitable superheating ratio

arranging heating surface of evaporating system and designing new superheater or reheater system are the key projects to investigate for the 700 ℃ ultra-supercritical unit boiler.

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