风速对骨料烘干煤粉燃烧器排放特性的影响

doi:10.12034/j.issn.1009-606X.218293

过程工程学报 ›› 2019, Vol. 19 ›› Issue (5): 1037-1046.DOI: 10.12034/j.issn.1009-606X.218293

风速对骨料烘干煤粉燃烧器排放特性的影响

程海鹰，李建新，张勇*，王京，胡志勇

内蒙古工业大学机械学院，内蒙古呼和浩特 010051

收稿日期:2018-09-26 修回日期:2019-02-21 出版日期:2019-10-22 发布日期:2019-10-22
通讯作者: 张勇 409176551@qq.com
基金资助:
国家自然科学基金项目

Effects of air velocity on emission characteristics of aggregate drying pulverized coal burner

Haiying CHENG, Jianxin LI, Yong ZHANG*, Jing WANG, Zhiyong HU

College of Mechanical Engineering, Inner Mongolia University of Technology, Hohhot, Inner Mongolia 010051, China

Received:2018-09-26 Revised:2019-02-21 Online:2019-10-22 Published:2019-10-22
Supported by:
National Natural Science Foundation of China

摘要/Abstract

摘要： 基于煤粉燃烧机理，结合骨料烘干工艺，建立了骨料烘干煤粉燃烧器内部场的控制模型，采用Fluent软件模拟煤粉燃烧器内部燃烧状况，考察了一、二、三次风的风速对煤粉燃烧器中心轴线处CO, CO2, NO和SO2浓度的影响。结果表明，在研究的风速范围内，一、二、三次风风速越大燃烧越充分，一、二、三次风风速越小，产生的NO越少；三次风风速为40 m/s时，SO2浓度最低；较合理的控制参数为一次风风速30~35 m/s，二次风风速45~50 m/s，三次风风速30~40 m/s。

关键词: 风速, 骨料烘干, 煤粉燃烧器, 排放特性, 数值模拟

Abstract: Since the use of pulverized coal as the fuel for the aggregate drying burner can greatly reduce the running cost of aggregate drying, a large amount of polluted gas was generated during the operation, so how to reduce the pollution caused by the aggregate pulverized coal burner things were the key to burner development. The method of numerical simulation was used to analyze the effects of different air velocity on emissions characteristics of aggregate drying pulverized coal burner and the features of emissions was summarized. The control model of the internal field in aggregate drying pulverized coal burner was constructed, which was based on the mechanism of coal combustion and the crafts of aggregate drying. Then the combustion process was numerically simulated by using the Fluent software. Regarding the velocity of primary air, secondary air and tertiary air as influence factors and the mass fraction of CO, CO2, NO, SO2 at the central axis of pulverized coal burner as the evaluating indicators, the effects of the velocity of primary air, secondary air and tertiary air on emission characteristics were analyzed. The results showed that with the velocity of primary air, secondary air, tertiary air increasing the burning was more completely, the lower of the velocity of the primary air, secondary air, tertiary air, the less NO was produced, the mass fraction of SO2 was least when the velocity of tertiary air was 40 m/s. The ranges of reasonable control parameters were 30~35 m/s for the velocity of primary air, 45~50 m/s for the velocity of secondary air, 30~40 m/s for the velocity of tertiary air.

Key words: air velocity, aggregate drying, pulverized coal burner, emission characteristics, numerical simulation

程海鹰李建新张勇王京胡志勇. 风速对骨料烘干煤粉燃烧器排放特性的影响[J]. 过程工程学报, 2019, 19(5): 1037-1046.

Haiying CHENG Jianxin LI Yong ZHANG Jing WANG Zhiyong HU. Effects of air velocity on emission characteristics of aggregate drying pulverized coal burner[J]. Chin. J. Process Eng., 2019, 19(5): 1037-1046.

参考文献

[1] 李超慈. 基于SO2、NOx、CO2排放总量控制的电力系统管理规划模型研究[D]. 华北电力大学(北京), 2015.
Li Chaoci. Study on Power System Management Planning Model Based on Total Emission Control of SO2、NOx and CO2[D]. North China Electric Power University (Bei Jing) North China Electric Power University, 2015.
[2] 郑阳. 大型煤粉燃烧锅炉NOx排放控制系统的运行特性及其优化[D].东南大学,2017.
Zheng Yang. Operational Characteristics of NOx Emission Control System of a Large-scale Pulverized Coal-fired Utility Boiler and the Optimization [D]. Southeast University, 2017.
[3] 梅振锋, 王飞飞, 张健鹏, 等. 一次风风速对高温预热空气下的煤粉MILD燃烧的影响[J]. 工程热物理学报, 2014, 35(04):782-786.
Mei Zhenfeng, Wang feifei, Zhang Jianpeng, et al. Effect of Primary Air Stream Velocity on MILD Combustion of Pulverized
Coal in High TemperaturePreheated Air[J]. Journal of Engineering Thermophysics, 2014，35(04): 782-786.
[4] 陈立军, 宫永立, 崔俊洁, 等. 火电厂一次风速及煤粉浓度的数据采集系统设计[J]. 计算机测量与控制, 2015, 23(11):3842-3845.
Chen Lijun, Gong Yongli, Cui Junjie, et al. Design of Data Acquisition System of Primary Air Velocity and Coal Dust Concentration in Thermal Power Plant[J]. Computer Measurement ＆ Control, 2015, 23(11):3842-3845.
[5] 徐顺生, 李罗军, 黄日升, 等. 分解炉内混煤燃烧最佳三次风速的模拟研究[J]. 过程工程学报, 2013, 13(2):181-185.
Xu Shunsheng, Li Luojun, Huang Risheng, et al. Simulation Study on The Best Tertiary Air Velocity of Coal Blend Combustion in a Calciner[J]. The Chinese Journal of Process Engineering, 2013, 13(2):181-185.
[6] 周志军, 周丛丛, 邵杰,等. 旋流燃烧器中二次直流风速对NOx生成的影响[J]. 热力发电, 2010, 39(3):23-29.
Zhou Zhijun, Zhou Congcong, Sao Jie, et al. Influence of Secondary Air Straight Flow Velocity in the swirl Burner upon Formation of NOx[J]. Thermal Power Generation, 2010, 39(3):23-29.
[7] 张文学, 郭彩, 武建新. 三次风速对煤粉燃烧器燃烧效率的影响[J]. 热力发电, 2015(4):39-43.
Zhang Wenxue, Guo Cai, Wu Jianxin. Effect of Tertiary Air Speed on Combustion Efficiency of Pulverized Coal Burners[J]. Thermal Power Generation, 2015(04): 39-43.
[8] 吕太,王泽民,吴红峰,吴昱.600MW机组锅炉分层掺烧神华煤的混煤燃烧数值模拟[J].电站系统工程,2015,31(01):29-31.
LV Tai, WANG Zemin, WU Hongfeng, et al. Numerical Simulation of Layered-combustion Shenhua Coal in 600MW Boiler[J]. Power System Engineering, 2015,31(01):29-31.
[9] Cui Kai, Liu Bing, Wu Yuxin, et al. Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model[J]. Chinese Journal of Chemical Engineering, 2014, 22(2): 193-201.
[10] Behnam Rahmanian, Mohammad Reza Safaei, S.N.Kazi. Investigation of pollutant reduction by simulation of turbulent non-premixed pulverized coal combustion[J]. Applied Thermal Engineering, 2014(73): 1222-1235.
[11] 刘喜宁. 基于SIMPLE方法下的三维湍流流场数值分析[D]. 西北工业大学, 2005.
Liu Xining. Numerical Study of Three-Dimension Turbulent Flow Based on SLMPLE Method[D]. Northwestern Polytechnical University, 2005.
[12] Cui K, Zhang H, Wang W L, et al. Comparison between Realizable κ-ε and RSM model in the simulation for a swirl burner[J]. Journal of Engineering Thermophysics, 2012, 33(11): 2006-2009.
[13] Zhou L. Advances in Studies on Turbulent Dispersed Multiphase Flows[J]. 中国化学工程学报:英文版, 2010, 18(6):889-898.
[14] Guan X Y, Dong Z G, Cheng D L. Experimental Study and Numerical Simulation of the Single- phase Flow Field in a Louver Coal Concentrator[J]. Science Technology & Engineering, 2014, 5(13): 49- 55.
[15] Cui K, Liu B, Zhang H, et al. Modeling of Pulverized Coal Combustion in Turbulent Flow with the Consideration of Intermediate Reactions of Volatile Matter[J]. Energy & Fuels, 2013, 27(4):2246-2254.
[16] 李振山,张志,陈登高,等.煤粉燃烧中NOx的预测:模型开发及Fluent实现[J]. 煤炭学报, 2016,41(10):2426-2433.
LI Zhenshan，ZHANG Zhi，CHEN Denggao，et al. Prediction of NO x during pulverized coal combustion:Model
development and its implementation with Fluent [J]. Journal of China Coal Society, 2016,41(10):2426-2433.
[17] St?llinger M, Naud B, Roekaerts D, et al. PDF modeling and simulations of pulverized coal combustion–Part 2: Application[J]. Combustion & Flame, 2013, 160(2): 396-410.

风速对骨料烘干煤粉燃烧器排放特性的影响

Effects of air velocity on emission characteristics of aggregate drying pulverized coal burner

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

[1]	高华鑫刘雪东张炜查晓峰吕圣男刘佳君吕开新. 新型热解炉燃烧室流热固耦合仿真与结构优化[J]. 过程工程学报, 2022, 22(9): 1203-1212.
[2]	田玉龙杨秀山孔行健许德华张志业. 磷石膏颗粒湍动流化特性实验及模拟[J]. 过程工程学报, 2022, 22(9): 1224-1231.
[3]	熊桂龙苏文康王安奇王一泽. 颗粒形状对包衣设备内药片颗粒运动特性影响的数值模拟[J]. 过程工程学报, 2022, 22(9): 1232-1243.
[4]	张建伟牛聚超董鑫冯颖. 撞击流反应器流场数值模拟及其混合性能优化[J]. 过程工程学报, 2022, 22(9): 1244-1252.
[5]	张静王胜昌田志国吴剑华龚斌. 周向多入口凹壁面切向射流流动特性分析[J]. 过程工程学报, 2022, 22(8): 1030-1039.
[6]	靳波张亚新. 颗粒尺度下混合催化剂床层中CO₂加氢反应体系数值模拟[J]. 过程工程学报, 2022, 22(8): 1040-1052.
[7]	段怡如李宝宽黄雪驰刘中秋柴玉莹. 电渣重熔H13模具钢过程碳偏析的模拟研究[J]. 过程工程学报, 2022, 22(8): 1074-1084.
[8]	王翠华李光瑜苏方正龚斌吴剑华. 螺旋套管换热器壳程流体湍流换热热力性能数值研究[J]. 过程工程学报, 2022, 22(7): 935-943.
[9]	张炜刘文津张玉明李家州岳君容. 高温加压微型流化床内脉冲气射流扰动的数值模拟[J]. 过程工程学报, 2022, 22(7): 944-953.
[10]	李倩吉华冯东林张子扬段宗幸. 孔分布对多孔孔板流场和噪声的影响[J]. 过程工程学报, 2022, 22(5): 601-611.
[11]	李雅侠许鹏宇韩泽民李运杭崔峰源张静. 矩形截面高宽比对射流强化螺旋通道传热性能的影响[J]. 过程工程学报, 2022, 22(5): 612-621.
[12]	胡涛向星葛蔚王利民. 基于多GPU并行格子Boltzmann方法的方管湍流模拟[J]. 过程工程学报, 2022, 22(3): 318-328.
[13]	周里群王智明汪振南李玉平黄治中. 三级活塞推料离心机数值模拟与操作参数优化[J]. 过程工程学报, 2022, 22(3): 329-337.
[14]	郑淑国朱苗勇. 250 t转炉二次燃烧氧枪射流特性[J]. 过程工程学报, 2022, 22(10): 1438-1446.
[15]	刘彪姚秀颖孟振亮刘梦溪. 高低并列式重油催化裂化汽提器挡板的结构优化[J]. 过程工程学报, 2022, 22(1): 22-31.