Application and Energy-saving Analysis of Built-in Array Acoustic Sootblower

Lei ZHOU; Ju ZHANG; Ziyuan SONG; Zhiping YANG; Peihu GUO; Haiping XIAO; Chen ZHANG; Jianlong LI

doi:10.12096/j.2096-4528.pgt.19146

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Application and Energy-saving Analysis of Built-in Array Acoustic Sootblower

Power Generation and Enviromental Protection | 更新时间：2025-07-04

- Application and Energy-saving Analysis of Built-in Array Acoustic Sootblower
- Power Generation Technology Vol. 41, Issue 6, Pages: 706-714(2020)
- 作者机构：
  
  1.华能宁夏大坝电厂四期发电有限公司, 宁夏回族自治区青铜峡市 751600
  2.华电和祥工程咨询有限公司, 山西省太原市 030006
  3.华北电力大学能源动力与机械工程学院, 北京市昌平区 102206
  4.北京中电慧能国际电力科技有限公司, 北京市海淀区 100081
- 作者简介：
- 基金信息：
  
  National Science and Technology Support Program(2015BAA04B02);Huaneng Group Headquarters Science and Technology Project(HNKJ18-H21)
- DOI：10.12096/j.2096-4528.pgt.19146
  CLC： TK229.6
- Received：24 March 2020，
  
  Published：31 December 2020
- 稿件说明：
移动端阅览
Lei ZHOU, Ju ZHANG, Ziyuan SONG, et al. Application and Energy-saving Analysis of Built-in Array Acoustic Sootblower[J]. Power Generation Technology, 2020, 41(6): 706-714.
DOI：

Lei ZHOU, Ju ZHANG, Ziyuan SONG, et al. Application and Energy-saving Analysis of Built-in Array Acoustic Sootblower[J]. Power Generation Technology, 2020, 41(6): 706-714. DOI： 10.12096/j.2096-4528.pgt.19146.

摘要

由于传统蒸汽吹灰技术存在吹灰死角，需耗费大量高品质蒸汽，且蒸汽因对受热面进行冲刷而影响其安全性，因此近年来较多的新建电厂倾向于在低温烟道采用内置阵列式声波吹灰器对低温再热器、低温过热器、省煤器进行吹扫。结合某660 MW电厂声波吹灰器的应用进行经济性评价研究。吹灰经济性通过锅炉侧的锅炉效率和汽机侧的汽轮机热效率2个指标来评价，采用锅炉反平衡方法计算某个负荷下锅炉排烟温度变化1℃时锅炉效率的变化量，吹灰后通过排烟温度的降低值来计算锅炉效率的增大值，进一步计算出煤耗的降低值。采用等效焓降法中工质携带热量出系统的计算方法，得到吹灰蒸汽量对汽轮机热耗的影响，并进一步计算出煤耗的增大值。综合考虑锅炉侧和汽机侧的经济性评价，得出声波吹灰器运行时的经济性增益。结果表明，采用内置阵列式声波吹灰器较常规蒸汽吹灰器年节约成本100万元以上。对于多年运行经济性较差的机组，采用内置阵列式声波吹灰器会有更佳的节能效果。

Abstract

Because the traditional steam sootblowing technology has a dead corner

it needs a lot of high quality steam

and the safety of the steam is affected by the scouring of the heating surface. Therefore

in recent years

many new power plants tend to adopt built-in array acoustic sootblower in the low-temperature flue to purge the low-temperature reheater

low-temperature superheater and economizer. Combined with the application of acoustic sootblower in a 660 MW power plant

the economic evaluation was studied. The sootblowing economy was evaluated by two indexes:boiler efficiency at boiler side and steam turbine thermal efficiency at turbine side. The boiler anti-balance method was used to calculate the boiler efficiency variation when the exhaust gas temperature changed 1℃ under a certain load. The increase of boiler efficiency was calculated by the decrease of flue gas temperature after sootblowing

and the decrease of coal consumption was further calculated. By using the calculation method of heat carrying out system by working medium in the equivalent enthalpy drop method

the influence of sootblowing steam on the heat consumption of steam turbine was obtained

and the increase of coal consumption was further calculated. The economic gain of acoustic sootblower was obtained by considering the economic evaluation of boiler side and steam turbine side. The results show that compared with the conventional steam sootblower

the annual cost saving of the built-in array acoustic sootblower is more than 1 million yuan. In addition

it will have better energy-saving effect for units with poor economic performance for many years.

关键词

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references

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