Operation adjustment for high temperature corrosion in water wall of supercritical opposed firing boiler

ZHOU Ke; SHE Yuanyuan; LU Fen; LI Jianshe; CHEN Junbin

English

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Operation adjustment for high temperature corrosion in water wall of supercritical opposed firing boiler

Thermal Power Generation Issue 6, (2016)

更新时间：2025-09-28

- Operation adjustment for high temperature corrosion in water wall of supercritical opposed firing boiler
- 作者机构：
  
  1. 西安热工研究院有限公司,陕西,西安,710032
  2. 福建省鸿山热电有限责任公司，福建石狮,362700
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.3+1
- Published Online：15 July 2016，
  
  Published：2016
- 稿件说明：
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ZHOU Ke, SHE Yuanyuan, LU Fen, et al. Operation adjustment for high temperature corrosion in water wall of supercritical opposed firing boiler[J]. Thermal Power Generation, 2016, (6).
DOI：

ZHOU Ke, SHE Yuanyuan, LU Fen, et al. Operation adjustment for high temperature corrosion in water wall of supercritical opposed firing boiler[J]. Thermal Power Generation, 2016, (6). DOI：

摘要

某超临界机组对冲燃烧锅炉水冷壁存在严重高温腐蚀的现象

这主要因水冷壁壁面附近存在强还原性气氛并伴有H2S气体产生所致。本文采用单因素轮换法

试验研究了主燃烧器的三次风旋流强度、三次风风量、二次风旋流强度、二次风风量等主要运行参数调整对锅炉水冷壁壁面气氛特性参数H2S质量浓度的影响规律。结果表明

在锅炉习惯运行方式的基础上

通过适当削弱主燃烧器三次风旋流

同层燃烧器三次风采取“碗式配风”

适当增强主燃烧器二次风旋流

增加燃尽风二次风风量

减少燃尽风一次风风量

适当提高运行氧量和一次风速

采取均等配煤方式

降低煤粉细度后

水冷壁侧墙平均H2S质量浓度由876.5 mg/m3降至352.2 mg/m3

水冷壁壁面气氛得到较大改善

锅炉运行安全性得以提高。

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