Optimization and reconstruction of superheater and reheater for a 1 000 MW tower type boiler with double-reheat cycle

LIU Chao; LIU Hui; WANG Lin; GAO Jinghui; ZHAO Zhidan; WANG Hongyu; MENG Yingqi

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Optimization and reconstruction of superheater and reheater for a 1 000 MW tower type boiler with double-reheat cycle

更新时间：2025-09-28

- Optimization and reconstruction of superheater and reheater for a 1 000 MW tower type boiler with double-reheat cycle
- Thermal Power Generation Issue 7, (2017)
- 作者机构：
  
  西安热工研究院有限公司,陕西,西安,710054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.2
- Published Online：02 August 2017，
  
  Published：2017
- 稿件说明：
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LIU Chao, LIU Hui, WANG Lin, et al. Optimization and reconstruction of superheater and reheater for a 1 000 MW tower type boiler with double-reheat cycle[J]. Thermal power generation, 2017, (7).
DOI：

LIU Chao, LIU Hui, WANG Lin, et al. Optimization and reconstruction of superheater and reheater for a 1 000 MW tower type boiler with double-reheat cycle[J]. Thermal power generation, 2017, (7). DOI：

摘要

针对1 000 MW二次再热机组塔式锅炉一级、三级过热器以及两级高温再热器金属壁温大范围超限问题，结合现场运行数据与模拟热力计算结果，提出了多项过热器与再热器的优化改造措施。具体改造措施为：通过将二级过热器外圈2根管子切除，减少了过热器受热面积；将低压高温再热器和高压高温再热器两侧管屏加装节流短管，增加了中部管屏冷却介质流量；针对部分超温严重的管子，通过截短高压高温再热器部分管段，以及在低压高温再热器中实施隔热喷涂，大大减少了两者的吸热量，降低了管子壁温。综合改造调整后，锅炉升降负荷过程基本消除了过热器超温现象，满负荷下各级过热汽温与两级再热汽温接近设计值，金属壁温无报警，大大提高了锅炉运行的安全性和经济性。

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