蓄热式热力燃烧室结构模拟优化与应用效果分析

帅启凡; 陆建刚; 李健生

doi:10.13205/j.hjgc.202202023

蓄热式热力燃烧室结构模拟优化与应用效果分析

doi: 10.13205/j.hjgc.202202023

1. 南京信息工程大学大气环境与装备技术协同创新中心江苏省大气环境监测与污染控制高技术研究重点实验室, 南京 210044;
2. 南京理工大学江苏省化工污染控制与资源化重点实验室, 南京 210094

基金项目:

江苏省科技成果转化专项资金项目(BA2019064)

江苏省研究生实践创新计划(SJCX20_0310)

详细信息

作者简介:
帅启凡(1997-),男,硕士,主要研究方向为大气污染控制。shuaiqifan@126.com

通讯作者:
陆建刚,教授,主要研究方向为大气污染控制。jglu@nuist.edu.cn

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- 文章访问数: 268
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- 被引次数: 0
出版历程
- 收稿日期: 2021-05-16
- 网络出版日期: 2022-04-02
- 刊出日期: 2022-04-02

ANALYSIS ON STRUCTURAL SIMULATION, OPTIMIZATION AND APPLICATION EFFECT OF A REGENERATIVE THERMAL OXIDIZER

1. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China;
2. Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, Nanjing University of Science and Technology, Nanjing 210094, China

摘要

摘要: 采用1套60000 m³/h蓄热式热力燃烧炉(regenerative thermal oxidizer, RTO)处理工业VOCs废气,装置投运后出现废气停留时间不足、净化气VOCs浓度波动大的情况,采用流场数值模拟分析后发现,系由RTO燃烧室结构设计不合理造成。为解决此问题,采用数值模拟优化燃烧室结构,确定设计和改进参数,将结构优化结果应用于RTO装置,设置斜板和挡墙,延长收窄通道。模拟结果和实际应用表明:结构优化有效改善了进气侧燃烧室内流场分布的均匀性,提高了燃烧室内整体湍流动能水平,扩大了燃烧室内的高温区域范围;在实际运行中,优化后净化气VOCs浓度波动大幅降低,不同运行阶段的浓度差异仅为4 mg/m³左右,缩小了78%,VOCs去除效率(RE)长期保持在99.5%以上,RTO燃烧室的结构模拟优化与应用实现了工业VOCs废气的高效净化,为未来RTO装置的结构优化设计提供参考。
- VOCs /
- 热力燃烧 /
- RTO /
- 结构优化 /
- 数值模拟
Abstract: A 60000 m³/h regenerative thermal oxidizer(RTO) was used to treat the VOCs exhaust from industrial sources. It was found that the residence time of exhaust in the RTO was insufficient during the RTO was running. The concentration of VOCs in the purified gas fluctuated greatly. Numerical simulation of flow field of the RTO showed that the structure design of combustion chamber of the RTO was unreasonable. In order to solve this problem, in this work, the structure of the combustion chamber was optimized by numerical simulation. RTO design and improvement parameters were determined and applied. Inclined plates and retaining walls were installed in the combustion chamber of the RTO. The narrowed channels of the combustion chamber were extended. The results of the simulation and practical application showed that the structure optimization could effectively improve the uniformity of the flow field distribution at the inlet side of the combustion chamber. The overall turbulence kinetic energy in the combustion chamber was increased. The high temperature area in the combustion chamber was expanded. The fluctuation of the VOCs concentration of the purified gas was greatly reduced in practical optimized operation. The concentration differences between different operation stages were reduced by 78%, as low as about 4 mg/m³. In addition, the removal efficiency(RE) of VOCs remained above 99.5%. The highly efficient purification of industrial VOCs exhaust was realized through the structural simulation, optimization and application of RTO's combustion chamber. It provides strong support for the structural optimization design of RTOs in the future.
- VOCs /
- thermal oxidation /
- RTO /
- structural optimization /
- numerical simulation

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参考文献(21)

[1]	WU R R,XI S D.Spatial distribution of ozone formation in China derived from emissions of speciated volatile organic compounds[J].Environmental Science & Technology,2017,51(5):2574-2583.
[2]	ZHENG H,KONG S F,YAN Y Y,et al.Compositions,sources and health risks of ambient volatile organic compounds (VOCs) at a petrochemical industrial park along the Yangtze River[J].Science of the Total Environment,2020,703:135505.
[3]	生态环境部.关于印发《2020年挥发性有机物治理攻坚方案》的通知(环大气[2020]33号)[EB/OL].http://www.mee.gov.cn/xxgk2018/xxgk/xxgk03/202006/t20200624_785827.html,2020-06-24.
[4]	吴文潇,孟娟,成蒙,等.改进型蓄热式燃烧在定形机中的应用[J].印染,2019,45(10):40-43.
[5]	栾志强,郝郑平,王喜芹.工业固定源VOCs治理技术分析评估[J].环境科学,2011,32(12):3476-3486.
[6]	萧琦,姜泽毅,张欣欣.多室蓄热式有机废气焚烧炉工程应用研究[J].环境工程,2011,29(2):69-72.
[7]	耿文广,张继刚,员冬玲,等.蓄热式氧化炉在无机材料煅烧尾气处理中的应用[J].环境工程学报,2018,12(11):3269-3273.
[8]	YANG J,CHEN Y F,CAO L M,et al.Development and field-scale optimization of a honeycomb zeolite rotor concentrator/recuperative oxidizer for the abatement of volatile organic carbons from semiconductor industry[J].Environmental Science & Technology,2012,46(1):441-446.
[9]	IIJIMA S,NAKAYAMA K,KUCHAR D,et al.Optimum conditions for effective decomposition of toluene as VOC gas by pilot-scale regenerative thermal oxidizer[J].World Academy of Science,Engineering and Technology,2008,44:492-497.
[10]	WANG F Z,LEI X X,HAO X W.Key factors in the volatile organic compounds treatment by regenerative thermal oxidizer[J].Journal of the Air & Waste Management Association,2020,70(5):557-567.
[11]	GIUNTINI L,BERTEI A,TORTORELLI S,et al.Coupled CFD and 1-D dynamic modeling for the analysis of industrial regenerative thermal oxidizers[J].Chemical Engineering and Processing-Process Intensification,2020,157:108117.
[12]	YOU Y H,HUANG H,SHAO G W,et al.A three-dimensional numerical model of unsteady flow and heat transfer in ceramic honeycomb regenerator[J].Applied Thermal Engineering,2016,108:1243-1250.
[13]	王姣.蓄热式热氧化炉在处理挥发性有机气体中的关键因素研究[D].哈尔滨:哈尔滨工业大学,2018.
[14]	HAO X W,LI R X,WANG J,et al.Numerical simulation of a regenerative thermal oxidizer for volatile organic compounds treatment[J].Environmental Engineering Research,2018,23(4):397-405.
[15]	乐文毅,段超龙,谢冬明.组合袋式除尘器的内部流场模拟[J].环境工程,2020,38(5):120-125 ,95.
[16]	孙骁龙.蜂窝陶瓷蓄热室的传热过程研究[D].武汉:华中科技大学,2012.
[17]	王珲,张璞,朱法强,等.高炉出铁场高温烟尘扩散与捕集特性模拟[J].环境工程,2020,38(11):123-129.
[18]	BARATTA M,MISUL D,VIGLIONEET L,et al.Combustion chamber design for a high-performance natural gas engine:CFD modeling and experimental investigation[J].Energy Conversion and Management,2019,192:221-231.
[19]	HE J Q,LENG C,XU H F,et al.Kinetic analysis of diffusion combustion of low calorific value gas under the action of thermal dynamics[J].Fuel,2021,287,119435.
[20]	许浩洁,王军锋,王东保,等.新型湿法除尘系统内气液两相流动的数值模拟[J].化工进展,2020,39(9):3590-3599.
[21]	CHOI M,SUNG Y,WON M,et al.Effect of fuel distribution on turbulence and combustion characteristics of a micro gas turbine combustor[J].Journal of Industrial and Engineering Chemistry,2016,48:24-35.