Simulation research on flow-accelerated corrosion in downstream of orifice plate for power plants

LIN Tong; ZHOU Keyi; SI Xiaodong

doi:10.19666/j.rlfd.201807130

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Simulation research on flow-accelerated corrosion in downstream of orifice plate for power plants

更新时间：2025-09-28

- Simulation research on flow-accelerated corrosion in downstream of orifice plate for power plants
- Thermal Power Generation Vol. 48, Issue 3, Pages: 14-21(2019)
- 作者机构：
  
  东南大学能源与环境学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201807130
  CLC： M623.8
- Published Online：26 February 2019，
  
  Published：2019
- 稿件说明：
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LIN Tong, ZHOU Keyi, SI Xiaodong. Simulation research on flow-accelerated corrosion in downstream of orifice plate for power plants[J]. Thermal power generation, 2019, 48(3): 14-21.
DOI：

LIN Tong, ZHOU Keyi, SI Xiaodong. Simulation research on flow-accelerated corrosion in downstream of orifice plate for power plants[J]. Thermal power generation, 2019, 48(3): 14-21. DOI： 10.19666/j.rlfd.201807130.

摘要

使用计算流体软件对电厂孔板下游流场进行模拟分析

研究不同流速和不同孔径比对孔板下游流场分布、传质系数的影响规律

并基于所建立的流动加速腐蚀(FAC)过程模型

确定孔板下游的腐蚀行为与流速、孔径比之间的相关性。结果表明:孔径比一定时

孔板下游传质系数和流动加速腐蚀速率随着流速增大整体呈现增大趋势

并且腐蚀峰值出现位置向孔板下游偏移;流体流速一定时

孔径比越小

传质系数和流动加速腐蚀速率越大

腐蚀高发区向孔板方向移动。该模拟结果与实验结果较吻合。

Abstract

The computational fluid software was used to simulate the flow field at downstream of the orifice plate in power plants

and the influence of velocity and aperture ratio on flow field distribution and mass transfer coefficient at downstream of the orifice plate was studied. Based on the established flow-accelerated corrosion(FAC) model

the correlation between the corrosion behavior at downstream of the orifice plate and the velocity and aperture ratio was determined. The results show that

when the aperture ratio is constant

the mass transfer coefficient and the corrosion rate of the orifice plate increase with the velocity

and the position of the maximum corrosion rate shifts to downstream of the orifice plate. When the velocity of the fluid is constant

the smaller the pore diameter ratio is

the greater the mass transfer coefficient and the corrosion rate are

and the high-incidence area of corrosion moves toward the orifice plate. The results obtained by this model agree well with the experimental results.

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Related Author

LIN Tong

ZHOU Keyi

SI Xiaodong

PENG Qiao College of Chemical Industy

ZHAO Wei

SONG Jing-xia Xi'an Thermal Power Research Institute Co Ltd

CAO Jie-yu

TANG Liying

Related Institution

College of Chemical Engineering, Dalian University of Technology

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Henan Boiler and Pressure Vessel Safety Testing Research Institute

School of Energy and Power Engineering, Xi'an Jiaotong University

College of Energy and Power, Jiangsu University of Science and Technology

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