AN APPROACH TO MULTI-STAGE IMPACT SAMPLER USED FOR FLY ASH SAMPLING IN FLUE DUCT OF POWER PLANTS

YUAN Yongtao1; WEI Yuzhen1; ZHANG Binwei2; QI Liqiang1 College of Environmental Science and Engineering

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AN APPROACH TO MULTI-STAGE IMPACT SAMPLER USED FOR FLY ASH SAMPLING IN FLUE DUCT OF POWER PLANTS

更新时间：2025-09-28

- AN APPROACH TO MULTI-STAGE IMPACT SAMPLER USED FOR FLY ASH SAMPLING IN FLUE DUCT OF POWER PLANTS
- Thermal Power Generation Vol. 39, Issue 5, Pages: 77-81(2010)
- 作者机构：
  
  1. 华北电力大学环境科学与工程学院
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.7
- Published：2010
- 稿件说明：
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YUAN Yongtao1, WEI Yuzhen1, ZHANG Binwei2, et al. AN APPROACH TO MULTI-STAGE IMPACT SAMPLER USED FOR FLY ASH SAMPLING IN FLUE DUCT OF POWER PLANTS[J]. Thermal power generation, 2010, 39(5): 77-81.
DOI：

YUAN Yongtao1, WEI Yuzhen1, ZHANG Binwei2, et al. AN APPROACH TO MULTI-STAGE IMPACT SAMPLER USED FOR FLY ASH SAMPLING IN FLUE DUCT OF POWER PLANTS[J]. Thermal power generation, 2010, 39(5): 77-81. DOI：

摘要

多级冲击采样器基于惯性冲击的原理

可同时对不同粒径范围的颗粒进行分级采样

并能够对粒径在PM2.5以下的超细颗粒进行分级采样。总结多级冲击采样器的应用现状

分析颗粒运动情况

给出了各级设计参数与切割粒径、雷诺数Re′和Stokes数之间的数学关系模型

讨论了其用于发电厂飞灰分级采样的可行性。

Abstract

The multi-stage impact sampler is based on impact inertia principle

it can be used for staged samling of particles in different grain diameter range simultanously

and can be used for staged sampling of ultrafine particles with grain diameter below PM2.5.The status quo of utilizing said multi-stage impact samplers has been summarized

the movement of particles being analysed

and a mathematic model of relationship between the design parameters of each stage and the cut-off grain diameters

as well as between Reynolds number Re and Stokes number being given

the feasibility of using said sampler for staged sampling of fly ash in thermal power plants being discussed.

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