Article
Environmental Sciences
Gang Zhou, Junpeng Wang, Ruixin Song, Wenyu Yang, Cuicui Xu
Summary: In this study, experimental research was conducted on the atomization process and dust reduction performance of four swirl nozzles with different inlet/outlet diameter ratios. The results showed that as the diameter ratio increased, the range of droplet breakup in the spray field increased while the intensity of droplet breakup decreased. The dust reduction efficiency increased and then decreased with the increase of the diameter ratio.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
Jingjing Yan, Fei Wang, Yucheng Li, Hongwei Liu, Yabin Gao, Zhigang Li, Ziwen Li
Summary: In this study, the effects of swirl intensity levels and the addition of spiral guide grooves on pressure swirl nozzles were investigated to improve atomization quality and dust control efficiency. Results showed that the application of spiral guide grooves led to increased atomization angles and coverage areas, while enhanced swirl intensities reduced the uniformity index of distribution sizes, significantly decreasing the Sauter mean diameter. Additionally, the high quality atomization significantly improved dust-reduction ability, with total dust and respirable dust removal efficiency both increased by approximately 11.23% and 9.33%, respectively.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Engineering, Chemical
Haiming Yu, Yee-Chung Jin, Weimin Cheng, Xianhang Yang, Xiaolong Peng, Yao Xie
Summary: The study proposed a multiscale method to investigate the atomization characteristics of pressure-swirl nozzle for dust reduction, focusing on internal flow field, primary atomization, and secondary atomization. Large eddy simulation, volume of fluid model, and adaptive mesh refinement method were used to predict liquid core breakup and calculate secondary breakup of bigger droplets.
Article
Engineering, Chemical
Gang Zhou, Junpeng Wang, Ruixin Song, Cuicui Xu, Pengfei Wang
Summary: This study experimentally investigated the droplet breakup and droplet particles diffusion of X-swirl nozzles and revealed the impact of turbulence on the atomization process. The experimental results showed that turbulence can change the trajectory of droplets and have a significant effect on droplet breakup.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Thermodynamics
Xin Ma, Shuang Wang, Fashe Li, Huicong Zhang, Shang Jiang, Meng Sui
Summary: In this study, the flow and spray characteristics of biodiesel in a swirl atomization nozzle were analyzed. The results showed that the optimal primary air flow rate and temperature for swirling atomization of biodiesel were 30 L/min and 45°C, respectively. Increasing the air flow rate and temperature promoted the development of the atomization flow field and the breaking of droplets in biodiesel, optimizing the swirling atomization process.
Article
Mechanics
Siyu Chen, Nasser Ashgriz
Summary: This study aimed to develop a correlation for the droplet size distribution of pressure swirl nozzles, measuring droplet sizes under different conditions and developing a mixture distribution with two lognormal distributions to fit the data. The correlation parameters are related to the Kelvin-Helmholtz wavelength and sheet thickness, which can be used to determine the Sauter Mean diameter and other spray statistics.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2022)
Article
Thermodynamics
Peiwen Dong, Qi Chen, Guoqiang Liu, Bowen Zhang, Gang Yan, Ruixiang Wang
Summary: This research explores the effects of nozzle geometric parameters on the flow and atomization characteristics in snow-making. Results show that increasing the orifice diameter and swirl slot area can effectively reduce droplet size and increase spray flow rate. The best atomization droplet size and maximum flow rate are achieved with an inlet pressure of 0.6-1.4 MPa, orifice diameter of 4.0 mm, and swirl slot width of 2.25 mm.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2023)
Article
Thermodynamics
Dongling Yu, Zuoxiang Zhu, Jiangen Zhou, Dahai Liao, Nanxing Wu
Summary: Through numerical analysis and experimental verification, it is concluded that for the atomization process of zirconia dry granulation, the pressure-swirl nozzle with an outlet diameter of 4mm has better atomization performance.
ADVANCES IN MECHANICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Jinfan Liu, Xin Feng, Hu Liang, Weipeng Zhang, Yuanyuan Hui, Haohan Xu, Chao Yang
Summary: This study investigates pressure swirl nozzles with different structures through experiments and simulations. The results show that the geometric factors of the nozzle, such as inlet and outlet diameter, inlet direction, swirl chamber diameter, and swirl chamber height, have a significant impact on the atomization performance.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Aerospace
Julio R. Ronceros Rivas, Amilcar Porto Pimenta, Jusceline Sumara Lessa, Gustavo A. Ronceros Rivas
Summary: This study discusses the development of a mathematical model for predicting the mean diameter of spray droplets generated by a pressure swirl atomizer. The model takes into account the viscosity of the liquid, geometrical parameters of the atomizer, as well as the angle of incidence and atomization parameters. The model also investigates the phenomena of rupture and stability in the liquid film, highlighting the importance of a new geometrical parameter that influences the droplet size diameter. Comparisons with analytical and experimental results demonstrate the accuracy and significance of the model.
PROPULSION AND POWER RESEARCH
(2022)
Article
Environmental Sciences
Yao Xie, Yuxi Ye, Haiming Yu, Weimin Cheng, Sen Xie, Junwei Zhao
Summary: The health of miners has been seriously threatened by dust pollution at the fully mechanized heading face. The outer spray of a roadheader, as the main technical means, has issues such as limited fog coverage and low dust removal efficiency. Through simulation and analysis of the atomization process using a multiscale swirl atomization model, this study identified the influence of nozzle diameter, length, circulation area ratio, and swirl core angle on swirl number and atomization effect, and established a non-linear functional relationship between variables. A new type of swirl nozzle suitable for the outside spray system was developed using the BP neural network model. Experimental results showed that the predicted results of the new swirl nozzle had an error of less than 15% compared to the BP network model. The new swirl nozzle had an atomization angle of 24.2 degrees, an average particle size of 64.43 μm, and an effective range of approximately 2.1 m. Additionally, the total dust removal efficiency and respirable dust removal efficiency of the new swirl nozzle at the driver's place were 61.10% and 63.85%, respectively, which were 21.69% and 20.92% higher than the original nozzle.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Dongyun Ma, Shinan Chang, Chen Yang
Summary: The study examined film formation characteristics of pressure-swirl nozzle during spray/wall impingement using optical method, finding impingement distance had a greater impact on spray angle than mass flow rate, and liquid film divided into zones with varying thickness.
Article
Environmental Sciences
Zhuwei Xie, Zhongtai Zhao, Dingfu Li, Fei Li, Chaojun Zhang, Chen Huang, Yimin Xiao
Summary: This study designed 88 measuring points using a 3D Fiber Phase-Doppler Anemometer to reveal the spatial distribution characteristics of atomization parameters of a fan-shaped pressure atomization nozzle. The results showed that the spatial distribution of atomization parameters in the axis and radial direction of the nozzle was inhomogeneous. The increase of spray pressure can improve atomization performance and dust removal efficiency to a certain extent, but the improvement effect had a limit. The findings provide reference for the design and operation of a spray system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Environmental Sciences
Ramalingam Senthil, Gunasekaran Arun Vijay
Summary: This article focuses on the spray characteristics of biodiesel, analyzing its physicochemical properties, injection conditions, and injector constraints to understand the atomization features. It also discusses the supporting systems for spray diagnostics and models. The highlighted significant spray challenges and future research direction benefit the fuel and combustion community.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Multidisciplinary Sciences
Chengting Liu, Liang He
Summary: A new supersonic atomization drainage gas recovery technology was developed to improve recovery rate, with established models and neural networks for predicting droplet size accurately. Experimental results demonstrate high accuracy and successful application in increasing natural gas recovery efficiency.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Xingxing Hu, Lingjie Liu, Yanmeng Bi, Lu Li, Chunsheng Qiu, Jingjie Yu, Shaopo Wang
Summary: In this study, the impact of exogenous folate on the start-up process of single-stage partial nitritation-anammox (SPNA) was evaluated using two lab-scale reactors. The results showed that folate addition can enhance nitrogen removal rate, extracellular polymeric substances production, hydrazine oxidase and dehydrogenase activity, as well as the relative abundance of Candidatus Brocadia.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Shaocang He, Tingting Shen, Jing Sun, Haoqi Pan, Chenxu Sun, Tianpeng Li, Runyao Li, Enshan Zhang
Summary: A novel process of acid leaching neutralization was developed for the preparation of inorganic polymeric composite ferric aluminum silicate coagulant (CFAS) using solid waste coal gasification coarse slag (CGCS). The optimized preparation process was determined through single-factor experiment and the performance of CFAS was evaluated for domestic sewage treatment. The results showed that CFAS exhibited excellent coagulation ability and achieved significant removal efficiency for turbidity, ammonia nitrogen, and chemical oxygen demand.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kinga Szatmari, Sandor Nemeth, Alex Kummer
Summary: In this article, a resilience-based reinforcement learning approach is proposed to address the potential thermal runaway issue in batch reactors. By calculating the resilience metric for reactors and utilizing Deep Q-learning to decide when to intervene in the system, resilient-based mitigation systems can be effectively developed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingyou Jiang, Qi Yao, Mingqing Su, Jingjing Li, Kunlun Lu, Dawei Ding, Han Hong
Summary: This study investigates the inhibitory characteristics and mechanisms of ABC powder on coal powder explosion. The addition of ABC powder significantly decreases the maximum explosion pressure and can completely suppress coal dust explosions. The study also reveals the thermal decomposition characteristics and reaction kinetics of the mixed system.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kubilay Bayramoglu, Mustafa Nuran
Summary: This study examines the feasibility of using pyrolytic oil from waste tires as fuel in diesel engines, and evaluates its energy, exergy, and sustainability. The results indicate that pyrolytic oil has potential as a renewable fuel source with relatively high thermal efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Xinru Duan, Yejia Lv, Jiaxing Hong, Jianzhong Wu, Jia Zhang, Yang Yue, Guangren Qian
Summary: This study successfully prepared a tube reactor with optimized catalyst formula, which showed good performance in removing dioxins and other pollutants in the experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Jiaoyang Du, Xueming Dang, Xiaorong Gan, Xin Cui, Huimin Zhao
Summary: In this study, a photocatalyst-enzyme hybrid system was constructed, which solved the issue of enzyme inactivation caused by high concentration of H2O2 through photocatalytic in-situ H2O2 production, and improved the stability and catalytic efficiency of the enzyme. The effectiveness of the system in treating phenolic EDCs was confirmed through experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Fu-Rong Xiu, Longsheng Zhan, Yingying Qi, Xinyue Lei, Jiali Wang, Haipeng Zhou, Wenting Shao
Summary: This study developed a synergetic and high-efficiency treatment of waste tantalum capacitors (WTCs) and polyvinyl chloride (PVC) using subcritical water process. The treatment significantly reduced the temperature and reaction time for metal tantalum recovery from WTCs, and improved the dechlorination efficiency of PVC. The optimized conditions resulted in 100% resin conversion efficiency of WTCs and 97.39% dechlorination efficiency of PVC. The interaction between decomposition products of WTCs and PVC produced a high level of benzoic acid.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingda Li, Jiaming Song, Yuting Li, Chaoying Meng, Shuxian Wang, Linghao Zong, Honggang Ye, Yishuai Jing, Feng Teng, Peng Hu, Haibo Fan, Guangde Chen, Xin Zhao
Summary: CdPS3 nanosheets, especially those exfoliated by sodium cholate, have shown highly efficient photocatalytic degradation performance. The strong dark adsorption and dye-sensitized photocatalytic properties of CdPS3 nanosheets contribute to high degradation efficiencies of various pollutants.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Dongxu Ouyang, Yimei Pang, Bo Liu, Zhirong Wang
Summary: This study investigates the thermal runaway features of lithium-ion cells under tunnel conditions, considering different states of charge and tunnel ceilings. The results show that the tunnel visibility is affected by the smoke generated during thermal runaway, and the shape of the tunnel ceiling influences the temperature rise differently.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)