Numerical simulation on atomization characteristics of SNCR air-blast atomizer

LI Minglei; YAN Weiping; GUO Juanbao

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Numerical simulation on atomization characteristics of SNCR air-blast atomizer

Thermal Power Generation Vol. 44, Issue 6, Pages: 52-57(2015)

更新时间：2025-09-28

- Numerical simulation on atomization characteristics of SNCR air-blast atomizer
- 作者机构：
  
  1. 华北电力大学能源动力与机械工程学院
  2. 河北诚誉喷雾技术有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X701
- Published：2015
- 稿件说明：
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LI Minglei, YAN Weiping, GUO Juanbao. Numerical simulation on atomization characteristics of SNCR air-blast atomizer[J]. Thermal Power Generation, 2015, 44(6): 52-57.
DOI：

LI Minglei, YAN Weiping, GUO Juanbao. Numerical simulation on atomization characteristics of SNCR air-blast atomizer[J]. Thermal Power Generation, 2015, 44(6): 52-57. DOI：

摘要

SNCR脱硝系统喷嘴的雾化特性直接影响其脱硝效率。为了解喷嘴内部混合过程

优化喷嘴雾化特性

采用Fluent软件对气力式雾化喷嘴进行数值模拟

给出了气液压力对喷嘴流量特性和雾化效果的影响规律

即当气压一定时

随着水压的升高

喷嘴喷雾量升高

气耗率降低;当液压一定时

随着气压的升高

喷嘴喷雾量减少

气耗率升高。该结论与试验结果吻合。

Abstract

The atomization characteristics of the nozzle in SNCR system directly affect the denitration efficiency.The spray angle

spray distance and some other macroscopic parameters can be measured through spray experiments.The Fluent software was adopted to simulate the air-blast atomizer in SNCR system

and the influence of gas-liquid pressure on flow characteristics and atomization effect was put forward.With a constant gas pressure

as the water pressure increases

the spraying volume increases while the gas consumption rate decreases.The opposite trend was obtained when the liquid pressure is fixed.This conclusion agrees well with the experimental results.

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