THE MOVING LOCUS OF UREA SOLUTION ATOMIZING PARTICLES IN FURNACE OF BOILER

CHEN Zhen-chao; YANG Wei-juan; ZHOU Jun-hu; HE Pei; WANG Zhi-hua; CEN Ke-faState-level Key Laboratory of Clean Energy Utilization

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THE MOVING LOCUS OF UREA SOLUTION ATOMIZING PARTICLES IN FURNACE OF BOILER

更新时间：2025-09-28

- THE MOVING LOCUS OF UREA SOLUTION ATOMIZING PARTICLES IN FURNACE OF BOILER
- Thermal Power Generation Vol. 39, Issue 2, Pages: 18-23(2010)
- 作者机构：
  
  1. 浙江大学能源清洁利用国家重点实验室
  2. 浙江大学能源清洁利用国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： X701.3
- Published：2010
- 稿件说明：
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CHEN Zhen-chao, YANG Wei-juan, ZHOU Jun-hu, et al. THE MOVING LOCUS OF UREA SOLUTION ATOMIZING PARTICLES IN FURNACE OF BOILER[J]. Thermal power generation, 2010, 39(2): 18-23.
DOI：

CHEN Zhen-chao, YANG Wei-juan, ZHOU Jun-hu, et al. THE MOVING LOCUS OF UREA SOLUTION ATOMIZING PARTICLES IN FURNACE OF BOILER[J]. Thermal power generation, 2010, 39(2): 18-23. DOI：

摘要

选择性非催化还原(SNCR)脱硝装置中Y型部分内混气力式雾化喷枪的雾化粒径随着气耗率的增加而变小

气耗率相同时

雾化粒径随着雾化工质的增加而变小。利用CFD软件平台

采用数值模拟方法对喷入100 MW机组四角切圆煤粉锅炉的雾化颗粒运动轨迹进行了研究

得出在25 m/s速度下最佳喷入雾化粒径在0.3~0.5 mm之间。在锅炉中进行了喷射尿素溶液的脱硝试验

脱硝率随着雾化粒径的增加先增加后减小

当氨氮比为1.5时

其脱硝效率最高可达到58%。

Abstract

The atomizing particle size of a Y-jet partial-inner-mixed pneumatic atomizing selective non-catalytic reduction(SNCR) lance is decreasing along with the increase of gas loss rate

and with the increase of atomizing medium in case of the gas loss rate being the same.The moving locus of atomizing pariticles injected into a 100 MW four-corner tangential firing pulverized coal boiler has been studied by using CFD software platform and adopting numerical simulation method.It is obtained that the best injected atomizing particle size is between 0.3~0.5 mm in the case of injection rate being equal to 25 m/s.A denitrification test with injection of urea solution into boiler has been carried out

the denitrification efficiency is inceasing at first

and then decreasing along with the increase of atomizing particle size.In the event of the chemical equivalence of ammoniacal nitrogen being equal to 1.5

the maximum denitrification efficiency can reach 58%.

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