超临界660 MW CFB锅炉循环物料分配特性研究

姚力; 谢玉婷; 葛铭; 刘海玉; 姜恒; 于辉; 金燕

doi:10.19666/j.rlfd.202409212

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超临界660 MW CFB锅炉循环物料分配特性研究

热力发电 2025年54卷第7期页码：71-81

“超超临界循环流化床发电技术”专题 | 更新时间：2026-08-11

- 超临界660 MW CFB锅炉循环物料分配特性研究
- Characterization of circulating material distribution in 660 MW CFB boiler
- 作者机构：
  
  1. 国家能源集团科学技术研究院有限公司
  2. 太原理工大学电气与动力工程学院
- 作者简介：
- 基金信息：
  
  山西省重点研发计划项目(201903D321075);中国工程院院地合作项目(2021SX5)~~
- DOI：10.19666/j.rlfd.202409212
  中图分类号： TM621.2
- 纸质出版：2025
- 稿件说明：
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[1]姚力,谢玉婷,葛铭,等.超临界660 MW CFB锅炉循环物料分配特性研究[J],2025,54(07):71-81.
[1]姚力,谢玉婷,葛铭,等.超临界660 MW CFB锅炉循环物料分配特性研究[J],2025,54(07):71-81. DOI： 10.19666/j.rlfd.202409212.

DOI：10.19666/j.rlfd.202409212.

摘要

基于计算颗粒流体力学数值模拟方法，以山西平朔超临界660 MW CFB锅炉为研究对象，建立炉膛全回路模型并进行数值模拟，以实际炉膛中的参数为基础，研究6个旋风分离器的物料分配特性，并通过改变一、二次风配比，一次风均匀性和二次风均匀性，分析运行参数变化对炉内气固流场以及旋风分离器入口物料分配的影响。结果表明：炉内颗粒的分布特性导致旋风分离器入口颗粒质量流量呈“两边高、中间低”的分配特点；总风量一定时，较大的一、二次风配比可减小旋风分离器入口颗粒质量流量的偏差；炉膛一、二次风的布风均匀性也会对旋风分离器入口的颗粒质量流量分配产生影响，6个旋风分离器入口的颗粒质量流量偏差分别在中间布风板的风速偏差为10%时和中间二次风量的偏差为5%时达到最小。

Abstract

Based on the computational particle fluid dynamics(CPFD) numerical simulation method

the study takes the 660 MW supercritical circulating fluidized bed(CFB) boiler in Pingshuo

Shanxi as the research object. A full-loop model of the furnace is established and numerically simulated. On the basis of the parameters of the actual furnace

the material distribution characteristics of six cyclone separators are investigated. By altering the ratio of primary to secondary air

the uniformity of primary air

and the uniformity of secondary air

the effect of operational parameter changes on the gas-solid flow field within the furnace and the material distribution at the cyclone separator inlets is analyzed. The results indicate that the distribution characteristics of particles within the furnace lead to a distribution feature of particle mass flow rate at the cyclone separator inlets

which is “high on both sides and low in the middle”. When the total air volume is constant

a larger ratio of primary to secondary air can reduce the deviation in particle mass flow rate at the cyclone separator inlets. The uniformity of air distribution for both primary and secondary air in the furnace also affects the particle mass flow rate distribution at the cyclone separator inlets. The deviations in particle mass flow rate at the inlets of the six cyclone separators reach their minimum when the wind speed deviation at the middle air distribution plate is 10% and the deviation in the middle secondary air volume is 5%

respectively.

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