EXPERIMENTAL STUDY ON MEASURING CONCENTRATION OF PULVERIZED COAL IN PRIMARY AIR PIPE CONDUIT OF THE BOILER

doi:10.19666/j.rlfd.2004.09.007

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EXPERIMENTAL STUDY ON MEASURING CONCENTRATION OF PULVERIZED COAL IN PRIMARY AIR PIPE CONDUIT OF THE BOILER

Thermal Power Generation Issue 9, Pages: 19-21(2004)

更新时间：2025-09-28

- EXPERIMENTAL STUDY ON MEASURING CONCENTRATION OF PULVERIZED COAL IN PRIMARY AIR PIPE CONDUIT OF THE BOILER
- 作者机构：
  
  西安交通大学,西安交通大学,西安交通大学,西安交通大学,西安交通大学陕西西安710049 ,陕西西安710049 ,陕西西安710049 ,陕西西安710049,陕西,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2004.09.007
  CLC： TK223.11
- Published：2004
- 稿件说明：
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EXPERIMENTAL STUDY ON MEASURING CONCENTRATION OF PULVERIZED COAL IN PRIMARY AIR PIPE CONDUIT OF THE BOILER[J]. Thermal Power Generation, 2004, (9): 19-21.
DOI：

EXPERIMENTAL STUDY ON MEASURING CONCENTRATION OF PULVERIZED COAL IN PRIMARY AIR PIPE CONDUIT OF THE BOILER[J]. Thermal Power Generation, 2004, (9): 19-21. DOI： 10.19666/j.rlfd.2004.09.007.

摘要

对 10 0MW机组锅炉的一次风管道的阻力进行了实炉测试

研究了单相和两相流动的管路阻力特性

测试结果表明

一次风输粉管道的阻力特性主要由具有特殊结构的煤粉分配器决定。试验得出 :(1)煤粉浓度 (煤 /空气 )为 (0 .2 9～ 0 .4 9)kg/kg时

双托板式煤粉混合器阻力系数K与煤粉浓度 μ的关系 ;(2 )输粉管阻力ΔPμ 与 μ的关系 ;(3)并且两相流阻力系数K并非常数

而是一个与煤粉浓度相关的变量。

Abstract

An onsite test of primary air for a 100MW coalfired boiler has been carried out

the pipe resistance behavier under singlephase and doublephase flow conditions being measured

and applicable curves being obtained. Results show that the resistance behavier in the primary air transporting pulverized coal （PC） pipe conduit is mainly determined by PC distributer with a special structure. Under condition of PC concentration obtained in the test to be 0.29～0.49 kg （coal） / kg （Air）

the correlation between coeficient of resistance K and PC concentration μ for a doubletray PC mixer

as well as between resistance of the primary air pipe conduit Δp and PC concentration μ has been analysed. It was found that the two phase flow resistance K isn’t a constant

but varying with the PC concentration.

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