Influence of Trip Time and Logic Sequence of High Pressure Fluidized Fan on CFB Boiler Operation——Discuss on Choked Problems of Material Return Valve in CFB Boiler

徐国生; 周天旺; 程文峰; 陈念祖

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Influence of Trip Time and Logic Sequence of High Pressure Fluidized Fan on CFB Boiler Operation——Discuss on Choked Problems of Material Return Valve in CFB Boiler

更新时间：2026-01-19

- Influence of Trip Time and Logic Sequence of High Pressure Fluidized Fan on CFB Boiler Operation——Discuss on Choked Problems of Material Return Valve in CFB Boiler
- Issue 2, Pages: 82-85(2013)
- 作者机构：
  
  1. 中电投江西电力有限公司
  2. 江西电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.66
- Published：2013
- 稿件说明：
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[1]徐国生,周天旺,程文峰,陈念祖.高压流化风机跳停时间和逻辑顺序对CFB锅炉运行的影响——论某CFB锅炉回料阀堵塞问题[J].能源研究与管理,2013(02):82-85.

徐国生, 周天旺, 程文峰, et al. Influence of Trip Time and Logic Sequence of High Pressure Fluidized Fan on CFB Boiler Operation——Discuss on Choked Problems of Material Return Valve in CFB Boiler[J]. 2013, (2): 82-85.
[1]徐国生,周天旺,程文峰,陈念祖.高压流化风机跳停时间和逻辑顺序对CFB锅炉运行的影响——论某CFB锅炉回料阀堵塞问题[J].能源研究与管理,2013(02):82-85. DOI：

徐国生, 周天旺, 程文峰, et al. Influence of Trip Time and Logic Sequence of High Pressure Fluidized Fan on CFB Boiler Operation——Discuss on Choked Problems of Material Return Valve in CFB Boiler[J]. 2013, (2): 82-85. DOI：

摘要

某330MW循环流化床锅炉多次发生因循环灰量大而造成回料阀堵塞现象

严重影响到机组的可靠性和经济性

而近期发生一起因低真空保护导致锅炉BT动作后又发生回料阀堵塞

如何查找出真正的原因?在研究锅炉BT保护动作逻辑的正确性上

通过DCS系统的事故追忆

还原了锅炉BT动作后各风机跳闸顺序和时间

找出了引风机和高压流化风机跳闸顺序有误、高压流化风机比一次风机延时120s跳停的关键原因

并提出改进建议、加强培训和修订逻辑的措施

对于大型循环流化床如何防止回料阀堵塞具有借鉴作用

经验值得推广。

Abstract

In the past the material return valve in a 330MW circulating fluidized bed boiler was repeatedly choked because of a lot of recycling ashes

which seriously affected the unit’s reliability and economy. But otherwise the material return valve was choked recently when the boiler BT action which was resulted from the low vacuum protection occurred. Then how to find out the real reason is introduced in this paper. Focused on the correctness of the boiler BT protection action logic

the trip sequence and trip time of the different fans after the boiler BT action occurred were restored by recalling the accident record of the DCS system. The key reason is that the induced fan and the high pressure fluidized fan tripped in the wrong order and the jump stop of the high-pressure fluidized fan delayed 20 s than that of the first order fan. Based on the results of this research

some recommendations for improvement

training and revised logical measures were brought forward

which similarly can be used to prevent the choking of the return valve in larger-scale circulating fluidized bed.

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