Analysis of dispersion patterns of waste gas emission from coke oven ascension pipes and design of a low-energy， high-efficiency gas collection system

ZHAO Chenhao; DANG Xiaoqing; JIN Haiting; MA Shuai; HUANG Jiayu; JI Shuo; ZHENG Huachun; QU Jiaxin

doi:10.13205/j.hjgc.202512019

Volume 43 Issue 12

Dec. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(12): 169-177

ZHAO Chenhao, DANG Xiaoqing, JIN Haiting, MA Shuai, HUANG Jiayu, JI Shuo, ZHENG Huachun, QU Jiaxin. Analysis of dispersion patterns of waste gas emission from coke oven ascension pipes and design of a low-energy， high-efficiency gas collection system[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(12): 169-177. doi: 10.13205/j.hjgc.202512019

Citation:

ZHAO Chenhao, DANG Xiaoqing, JIN Haiting, MA Shuai, HUANG Jiayu, JI Shuo, ZHENG Huachun, QU Jiaxin. Analysis of dispersion patterns of waste gas emission from coke oven ascension pipes and design of a low-energy， high-efficiency gas collection system[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(12): 169-177. doi: 10.13205/j.hjgc.202512019

Citation:

ZHAO Chenhao, DANG Xiaoqing, JIN Haiting, MA Shuai, HUANG Jiayu, JI Shuo, ZHENG Huachun, QU Jiaxin. Analysis of dispersion patterns of waste gas emission from coke oven ascension pipes and design of a low-energy， high-efficiency gas collection system[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(12): 169-177. doi: 10.13205/j.hjgc.202512019

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Analysis of dispersion patterns of waste gas emission from coke oven ascension pipes and design of a low-energy， high-efficiency gas collection system

doi: 10.13205/j.hjgc.202512019

1. Shaanxi Key Laboratory of Environmental Engineering, Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. Hebei Xinxing Energy Technology Co., Ltd., Handan 056300, China;
3. Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Received Date: 2024-11-29
Accepted Date: 2025-01-10
Rev Recd Date: 2024-12-20

Available Online: 2026-01-09

Abstract

Abstract

The low-energy， high-efficiency control of fugitive emissions from high-temperature， dust-laden gas generated during the capping and airing processes before coke pushing into coke ovens， is a pressing challenge that needs to be addressed for achieving the ultra-low emissions in the coking industry. This study was focused on a specific coking plant equipped with a low-efficiency， waste gas collection system for ascension pipes， to address the issues of low collection efficiency and high energy consumption in its existing ascension pipe waste gas collection system. A numerical simulation-based method was employed to analyze the diffusion patterns of waste gas emissions from the ascension pipes and optimize the waste gas collection system to improve dust collection efficiency. Based on the results， an automated control system based on programmable logic controller （PLC） was developed. The results indicated that the currently operational waste gas collection hood was 4 meters from the ascension pipe's central axis. The velocity of the hood decreased dramatically， causing the dust to disperse after reaching the furnace hood， resulting in a collecting efficiency of only 40%. Adding a roof collection chamber ensured the emergency venting function while buffering gas flow velocity. Positioning the collection hood on one side of the roof collection chamber， and decreasing the distance between the hood and the central axis of the ascension pipe to 1.6 meters， enabled 100% dust collection from the ascension pipe at an airflow of 3.3×10⁴ m³/h. In Work Mode 1， dust collection effectiveness got improved with the growing of waste air volume of the collecting hood. Dust was effectively kept from spreading sideways in Work Mode 2 by positioning the collection hood on both ends of the ascension pipe. Dust was entirely collected at an exhaust rate of 4×10⁴ m³/h， except for ascension pipes 1-4. The PLC system associated with the coke oven pushing schedule provides entirely automated intelligent control of the gas collection system. The airflow rate of the system was reduced from 8×10⁵ m³/h to 1.6×10⁵ m³/h， resulting in an 80% reduction in energy consumption. This research provides insights for the efficient， low-energy control of waste gas dispersion from ascension pipes and offers a practical reference for addressing the ultra-low emissions challenge in the coke industry.
- coke oven ascension pipe,
- flow field characteristics,
- waste gas collection system,
- collection efficiency,
- PLC,
- energy conservation and emission reduction

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References(33)

References

[1]	ZHU T，WANG X，YU Y，et al. Multi-process and multi-pollutant control technology for ultra-low emissions in the iron and steel industry［J］. Journal of Environmental Sciences，2023，123（1）：83-95.
[2]	DYAKOV S N，AREDAKOV D A，Iovanovich D. Dust free coke discharge on the machine side of coke ovens［J］. Coke& Chemistry，2014，57（2）：51-54.
[3]	PLARCYZK E，SOWA F，KAISER M，et al. Emissions at coke plants：european environmental regulations and measures for emission control［J］. Transactions of the Indian Institute of Metals，2013，66（5/6）：723-730.
[4]	GAO Z F，ZHANG X H，ZHAO W J，et al. Characteristic analysis of VOCs emitted from a typical coking plant［J］. Research of Environmental Sciences，2019，32（9）：1540-1545. 高志凤，张晓红，赵文娟，等. 典型焦化厂大气挥发性有机物排放表征分析［J］. 环境科学研究，2019，32（9）：1540-1545.
[5]	TELENGA-KOPYCZYŃSKA J，JONEK-KOWALSKA I. Algorithm for selecting best available techniques in polish coking plants supporting multi-criteria investment decisions in european environmental conditions［J］. Energies，Multidisciplinary Digital Publishing Institute，2021，14（9）：2631.
[6]	MAKGATO S S，FALCON R M S，CHIRWA E M N. The effect of recycling coke oven tar on environmental pollution，coke quality，personnel and process safety［J］. Process Safety and Environmental Protection，2019，126：141-149.
[7]	RUDYKA V I，KRAVCHENKO S A，SOLOVJOV M A，et al. Innovations in world cokemaking technologies：a report on the ESTAD 2019 Steel Conference［J］. Coke and Chemistry，2020，63（6）：283-293.
[8]	KOCHANSKI U. Reducing emissions at coke ovens with the pressure regulation system PROven［J］. Steel Times International，2003（2）：27.
[9]	GU X，ZHAI L G. Discussion on comprehensive particulate matter emission control for 6 m coke oven［J］. Fuel& Chemical Processes，2021，52（3）：58-60. 谷啸，翟连国. 简析6 m焦炉机侧烟尘综合治理［J］. 燃料与化工，2021，52（3）：58-60.
[10]	LU L，YAO X，YAN Z，et al. Life cycle cost of coke dry quenching waste heat recovery-mediated power generation［J］. Journal of Cleaner Production，2024，446：141161.
[11]	CAVALIERE P. Coke making：most efficient technologies for greenhouse emissions abatement［M］. Cham：Springer International Publishing，2019：39-110.
[12]	XIE C B，QUAN M F，CAO Z X，et al. Improvement of fume capture efficiency of side suction hood with parallel-flow supply air［J］. Environmental Engineering，2021，39（10）：101-109. 谢春波，权梦凡，曹智翔，等. 平行流送风对侧吸排风罩烟气捕集效率的提升［J］. 环境工程，2021，39（10）：101-109.
[13]	WANG L L，XIAO Y，ZHEN R Q. Environmental impact analysis of the centralized governance for coke oven fugitive dust in the emission of benzo［a］ pyrene［J］. Safety and Environmental Engineering，2017，24（5）：90-93. 王璐璐，肖莹，甄瑞卿. 焦炉逸散烟尘集中治理对苯并［a］芘排放的环境影响分析［J］. 安全与环境工程，2017，24（5）：90-93.
[14]	JOUNDALE S B，SUTAR D，SADANANDAN S. Development of battery machine automation using optimised auto schedule for coke ovens［C］// 2017 International Conference on Computing Methodologies and Communication（ICCMC）. Erode：IEEE，2017：194-199.
[15]	WANG H，ZHANG P，ZHU F Q，et al. Simulation study on diffusion and collection characteristics of high temperature smoke and dust in blast furnace cast house［J］. Environmental Engineering，2020，38（11）：123-129. 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.
[16]	RIM D，WALLACE L，NABINGER S，et al. Reduction of exposure to ultrafine particles by kitchen exhaust hoods：The effects of exhaust flow rates，particle size，and burner position［J］. Science of the Total Environment，2012，432：350-356.
[17]	SONG G J，YANG L，SHEN H G. A CFD study on optimal venting volume and air flow distribution in a special designed hood system for controlling dust flow［J］. China Foundry，2011，8（3）：316-320.
[18]	GENG X W，YAN J X. Optimization of dust control measures in steelmaking electric furnace workshop based on FLUENT［J］. Journal of Safety Science and Technology，2021，17（9）：163-168. 耿晓伟，阎晶雪. 基于FLUENT的炼钢电炉车间粉尘控制措施优化［J］. 中国安全生产科学技术，2021，17（9）：163-168.
[19]	HUANG Y Q，JIANG C，WANG Y，et al. Flow field characteristics of flue gas and exhaust system optimization in electric furnace［J］. Heating Ventilating& Air Conditioning，2018，48（11）：22-28. 黄艳秋，姜闯，王怡，等. 电炉烟气流场特性及排风系统优化研究［J］. 暖通空调，2018，48（11）：22-28.
[20]	SUN G H，YANG K M，LEI W J. Study on pollutant filling rule and accident exhaust in coke oven hood［J］. Energy Conservation，2022，41（5）：56-61. 孙国宏，杨开敏，雷文君. 焦炉炉罩内污染物填充规律及事故排风研究［J］. 节能，2022，41（5）：56-61.
[21]	HUANG Z，DANG X Q，LI S J，et al. Numerical simulation and application on resistance balance of VOCs collection system in different working modes［J］. Chinese Journal of Environmental Engineering，2020，14（2）：440-447. 黄准，党小庆，李世杰，等. 不同工作模式下VOCs废气收集系统阻力平衡数值模拟与应用［J］. 环境工程学报，2020，14（2）：440-447.
[22]	TAO W，GAO X，SUN A. Coke oven pushing plan optimization scheduling research based on improved ant colony algorithm［R］. 2015 34th Chinese Control Conference（CCC）. Hangzhou：IEEE，2015：2743-2746.
[23]	LIU W L，DING Y，ZHOU R，et al. Numerical simulation and analysis of structure parameters of push-pull hood for capturing flue gas emitted from the ladle［J］. Environmental Engineering，2014，32（2）：81-86. 刘文龙，丁毅，周睿，等. 钢包烟气捕集用吹吸式排风罩结构参数的数值模拟试验分析［J］. 环境工程，2014，32（02）：81-86.
[24]	SHAHEED R，MOHAMMADIAN A，KHEIRKAHAH GILDEH H. A comparison of standard k-ε and realizable k-ε turbulence models in curved and confluent channels［J］. Environmental Fluid Mechanics，2019，19（2）：543-568.
[25]	KHALAJI M N，KOCA A，KOTCIOĞLU İ. Investigation of numerical analysis velocity contours k-ε Model of RNG，standard and realizable turbulence for different geometries［J］. International Journal of Innovative Research and Reviews，2019，3（2）：29-34.
[26]	WANG F J. Computational fluid dynamics analysis［M］. Beijing：Tsinghua University Press，2004. 王福军. 计算流体动力学分析［M］. 北京：清华大学出版社，2004.
[27]	LI C Q. Characterization of air pollutants emitted from coking production［D］. Chongqing：Southwest University，2009. 李从庆. 炼焦生产大气污染物排放特征研究［D］. 重庆：西南大学，2009.
[28]	ALLETTO M，BREUER M. One-way，two-way and four-way coupled LES predictions of a particle-laden turbulent flow at high mass loading downstream of a confined bluff body［J］. International Journal of Multiphase Flow，2012，45：70-90.
[29]	WANG Q，FENG J，SUN B，et al. Numerical simulation research on gas-solid two phase flow in oil shale circulating fluidized bed［J］. Energy Procedia，2012，17：851-860.
[30]	DUAN M，WANG Y，GAO D，et al. Modeling dispersion mode of high-temperature particles transiently produced from industrial processes［J］. Building and Environment，2017，126：457-470.
[31]	KONG L X，SONG G J，ZHAO H，et al. Optimization study of airflow organization of aerial mobile fume trapping hood in foundry workshop［J］. Foundry，2024，73（7）：923-932. 孔令旭，宋高举，赵虎，等. 铸造车间空中移动式烟气捕集罩气流组织优化研究［J］. 铸造，2024，73（7）：923-932.
[32]	WANG Y，LIU Q H，HUANG Y Q，et al. Analysis and optimization design method of exhaust hood capture efficiency above buoyant jet［J］. Environmental Engineering，2015，33（1）：90-94. 王怡，刘秋寒，黄艳秋，等. 浮射流上方排风罩的捕集效率分析及优化设计［J］. 环境工程，2015，33（1）：90-94.
[33]	MA G D，HUANG X M，ZHU T L，et al. Air pollution control technical manual［M］. Beijing：Chemical Industry Press，2010. 马广大，黄学敏，朱天乐，等. 大气污染控制技术手册［M］. 北京：化学工业出版社，2010.