Spray characteristics of SNCR internal mixing sprayer

AN Lu; CHEN Chen; DONG Changqing; ZHANG Xuehui

English

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Spray characteristics of SNCR internal mixing sprayer

Thermal Power Generation Issue 6, (2017)

更新时间：2025-09-28

- Spray characteristics of SNCR internal mixing sprayer
- 作者机构：
  
  1. 北京华电光大环境股份有限公司,北京,102206
  2. 华北电力大学生物质发电成套设备国家工程实验室,北京,102206
- 作者简介：
- 基金信息：
- DOI：
  CLC： X701.7
- Published Online：30 June 2017，
  
  Published：2017
- 稿件说明：
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AN Lu, CHEN Chen, DONG Changqing, et al. Spray characteristics of SNCR internal mixing sprayer[J]. Thermal Power Generation, 2017, (6).
DOI：

AN Lu, CHEN Chen, DONG Changqing, et al. Spray characteristics of SNCR internal mixing sprayer[J]. Thermal Power Generation, 2017, (6). DOI：

摘要

选择性非催化还原法（SNCR）脱硝系统中，还原剂内混式喷枪的流量特性和雾化特性对脱硝效率影响较大。本文通过实验研究了影响雾化特性的主要因素气、液压力和气液比对内混式SNCR喷枪流量特性和雾化特性的影响，尤其是对喷枪射程的影响。结果表明：喷枪内液体流量实验曲线基本符合Qw≈(pw－p3)0.5的指数增长关系；喷枪最佳设计气体压力为pw≤pa≤pw+0.1 MPa；随着液体压力的增大，雾化颗粒变大，射程增幅明显；随着气液比的增加，雾化颗粒越来越细，射程逐渐变小，考虑刚度射程问题时，气液比选择在0.10左右较为合宜，且设计气液比kALR≤0.10时可以明显的增加射程；增加气、液的初始压力不能显著改善喷枪穿透深度。

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