Type selection of frimary,secondary air fans and induced draft fans for boiler in biomass power plants

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Type selection of frimary,secondary air fans and induced draft fans for boiler in biomass power plants

更新时间：2025-09-28

- Type selection of frimary,secondary air fans and induced draft fans for boiler in biomass power plants
- Thermal Power Generation Vol. 42, Issue 4, Pages: 94-97(2013)
- 作者机构：
  
  广东省电力设计研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.26
- Published：2013
- 稿件说明：
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DUAN Yuyan Guangdong Electric Power Design Institute. Type selection of frimary,secondary air fans and induced draft fans for boiler in biomass power plants[J]. Thermal power generation, 2013, 42(4): 94-97.
DOI：

DUAN Yuyan Guangdong Electric Power Design Institute. Type selection of frimary,secondary air fans and induced draft fans for boiler in biomass power plants[J]. Thermal power generation, 2013, 42(4): 94-97. DOI：

摘要

以某生物质发电机组循环流化床(CFB)锅炉为例

研究了生物质发电系统一次风机、二次风机和引风机的选型

分析了定速风机与变频风机的经济效益差异

以及燃料收到基水分对风机运行的影响。结果表明

一、二次风机及引风机均应选用离心式风机

其中一次风机采用定速电机驱动

二次风机和引风机采用变频电机驱动;生物质发电系统每台锅炉应分别配置1台一次风机和二次风机

且一、二次风机流量裕量应不小于15%

出口压力裕量不小于20%;65t/h级及以下每台锅炉配置1台引风机

130t/h级及以上每台锅炉配置2台引风机

流量裕量不小于20%

出口压力裕量不小于25%;风机裕量应考虑燃料收到基水分的影响。

Abstract

Taking the CFB boiler in a biomass power generation plant as an example

the type selection of the primary secondary air fans and induced draft fans for biomass power generation system was investigated.Moreover

the economic benefit difference between constant-speed fans and variable-frequency fans and the influence of fuel moisture as received on the operation of fans were analyzed.The results showed that

all the three main fans should adopt centrifugal fans

among which the primary air fan should be driven by constant-speed motor

and the secondary air fan and induced draft fan should be driven by variable-frequency motor.Each boiler in biomass power generation system should be equipped with one primary and secondary air fans

and the flow allowance of them should be larger than 15%

and the outlet pressure allowance be larger than 20%.One induced draft fan should be equipped for each boiler below 65t/h capacity level

and two for boiler above 130 t/h level

the flow allowance should be larger than 20% and the outlet pressure allowance be larger than 25%.Design of induced draft fans should consider the influence of fuel moisture as received.

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