Water wall temperature deviation of an ultra-supercritical 1 000 MW unit boiler: analysis and countermeasures

ZHANG Shihong; LIU Zhengqiang; NIE Xin; YANG Dong; YUN Panfeng

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Water wall temperature deviation of an ultra-supercritical 1 000 MW unit boiler: analysis and countermeasures

更新时间：2025-09-28

- Water wall temperature deviation of an ultra-supercritical 1 000 MW unit boiler: analysis and countermeasures
- Thermal Power Generation Issue 10, (2017)
- 作者机构：
  
  1. 国家电投集团河南电力有限公司技术信息中心,河南,郑州,450001
  2. 国家电投集团河南电力有限公司平顶山发电分公司,河南,平顶山,467300
  3. 西安交通大学动力工程多相流国家重点实验室,陕西,西安,710049
  4. 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： TK223.3
- Published Online：01 November 2017，
  
  Published：2017
- 稿件说明：
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ZHANG Shihong, LIU Zhengqiang, NIE Xin, et al. Water wall temperature deviation of an ultra-supercritical 1 000 MW unit boiler: analysis and countermeasures[J]. Thermal power generation, 2017, (10).
DOI：

ZHANG Shihong, LIU Zhengqiang, NIE Xin, et al. Water wall temperature deviation of an ultra-supercritical 1 000 MW unit boiler: analysis and countermeasures[J]. Thermal power generation, 2017, (10). DOI：

摘要

针对平顶山电厂超超临界机组直流锅炉水冷壁壁温偏差过大的问题，本文根据锅炉结构特点和对冲燃烧特性，建立了1 000 MW机组对冲燃烧锅炉水动力计算模型，并通过对比计算结果和试验实测数据，反推锅炉热负荷分布，分析了造成锅炉水冷壁壁温偏差过大的原因，提出了相关应对措施。研究结果表明：该机组锅炉水冷壁壁温偏差过大主要是由炉膛内热负荷不均和流量分配不均引起，同时锅炉结构也对壁温偏差的敏感度有一定的影响；在高电负荷时，计算结果与实测数据能够较好地吻合，但中低电负荷时，水冷壁吸热偏差较大，通过反推，修正了热负荷分布，发现计算值与实测结果接近。建议在运行过程中注意调整同层旋流燃烧器的风粉均匀分配，在变负荷或扰动工况时控制好煤水比，在锅炉设计方面可以调整进入上炉膛前墙和后墙的流动截面比，使流量均匀分配。

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