Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.1
2.9
Journals
Atmosphere
Special Issues
Developments and Applications of Scrubbers and Auxiliary Facilities for Air...
share announcement

Developments and Applications of Scrubbers and Auxiliary Facilities for Air Pollution Control

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Pollution Control".

Deadline for manuscript submissions: closed (15 November 2022) | Viewed by 8297

Special Issue Editors

Prof. Dr. Xiaochuan Li

E-Mail Website
Guest Editor
School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
Interests: industrial dust; scrubber; dust suction installation; industrial air purification
Prof. Dr. Gang Zhou

E-Mail Website
Guest Editor
College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Interests: safety and occupational health protection in industry and mining; environment function material; new energy security technology; safety systems engineering and emergency management
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Ambient air pollution has become a serious threat to human health and welfare, and the efficient control of pollutant emissions is needed. Due to their unique advantages, scrubbers are used to purify many kinds of pollutants in indoor and industrial processes, such as particulate matter, ammonia, and formaldehyde. With the increasing requirements of air quality and exhaust emission standards in recent years, the performance and efficiency of scrubbers also need to be continuously improved to adapt to the development of air pollution control. However, there are still some gaps in our understanding of mass and heat transfer mechanisms in the working process of scrubbers, which seriously limits the wider and more accurate application of scrubbers. In addition to efficient scrubbers, exhaust systems for pollutants are another key element of air pollution control, and the treatment of contaminated water from scrubbers must also be considered. The aim of this Special Issue is to publish innovative research that will form a remarkable contribution to promoting theories and technologies related to scrubbers and auxiliary facilities. Original results from experimental investigations, theoretical discussions, technical innovations, process simulations, and review papers are all welcome contributions.

Topics of interest for this Special Issue on “Developments and Applications of Scrubbers and Auxiliary Facilities for Air Pollution Control” include, but are not limited to, the following:

  1. Migration and purification mechanisms of pollutants in scrubbers, such as dust, nitrate, sulfate, ammonium, formaldehyde, and hydrogen sulfide;
  2. Numerical simulation of multiphase flow process in scrubbers;
  3. Structure and technological innovation of scrubbers;
  4. Exploration of digital, information, and intelligent improvements in scrubbers;
  5. Innovative application of scrubbers in unconventional areas;
  6. Auxiliary facilities of scrubbers, such as exhaust hoods, ventilation pipes, and wastewater treatments;
  7. Potential value evaluation and application prospect of scrubbers.

Prof. Dr. Xiaochuan Li
Prof. Dr. Gang Zhou
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • scrubbers
  • particulate matter
  • air purification
  • irritating odor gas
  • exhaust hood
  • wastewater treatment
  • multiphase flow
  • purification mechanism

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

21 pages, 22169 KiB  
Article
CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression Device
by Shitu Mo, Pengfei Wang, Runze Gao, Shiqiang Chen and Shilin Li
Atmosphere 2022, 13(10), 1543; https://doi.org/10.3390/atmos13101543 - 21 Sep 2022
Cited by 4 | Viewed by 1703
Abstract
Spraying for dust suppression is a conventional technological means for industrial dust control. The traditional spraying technique shows a few shortcomings, including low dust suppression efficiency, great water consumption, and failure in far-distance dust suppression. This study proposed a novel combined spraying dust [...] Read more.
Spraying for dust suppression is a conventional technological means for industrial dust control. The traditional spraying technique shows a few shortcomings, including low dust suppression efficiency, great water consumption, and failure in far-distance dust suppression. This study proposed a novel combined spraying dust suppression device and established the related physical model and mathematical model. Using the CFD numerical simulation method, the basic characteristics of the airflow field and spray field around the device and the related influencing factors were investigated in depth. Results showed that the Coanda effect appeared near the wall surface in the air duct when the combined spraying dust suppression device was operated. Under this effect, negative pressure formed at the center of the device. The velocity of the combined device showed a symmetrical distribution and decayed steadily downward from the outlet of the device. An obvious stratification can be observed in the spray field. The mean droplet size first increased and then decreased along the airflow direction. Meanwhile, the effects of the air supply pressure and water supply pressure were examined. On the one hand, the velocity of the combined spraying dust suppression device and the spraying range were in direct proportion with the air supply pressure. As the air supply pressure increased, the droplet size first increased and then decreased. On the other hand, increasing the water supply pressure imposed almost no effect on the airflow field of the combined spraying dust suppression device but can reduce the droplet size and enhance the spraying range. Full article
(This article belongs to the Special Issue Developments and Applications of Scrubbers and Auxiliary Facilities for Air Pollution Control)
►▼ Show Figures

Figure 1

14 pages, 3017 KiB  
Article
A 3D Monte Carlo Simulation of Convective Diffusional Deposition of Ultrafine Particles on Fiber Surfaces
by Shixian Wu, Yongping Chen, Can Qi, Chunyu Liu, Gang Li and Hui Zhu
Atmosphere 2022, 13(8), 1319; https://doi.org/10.3390/atmos13081319 - 18 Aug 2022
Cited by 1 | Viewed by 1491
Abstract
The microscale simulation of ultrafine particle transport and deposition in fibrous filtration media was achieved with a novel particle tracking model using a 3D Monte Carlo model. The particle deposition process is governed by the convection–diffusion field. Simulations were performed by considering the [...] Read more.
The microscale simulation of ultrafine particle transport and deposition in fibrous filtration media was achieved with a novel particle tracking model using a 3D Monte Carlo model. The particle deposition process is governed by the convection–diffusion field. Simulations were performed by considering the fibrous filtration media as an array of identical parallel fibers, in which the flow field was accurately described by an analytical solution. The model of particle movement was described by the random probability distribution characterized by a dimensionless factor, the Peclet number (Pe), based on a convection–diffusive equation of particle transport in fluid. The influence of the particle Peclet number (Pe) on the particle deposition process and the resulting deposition morphology was investigated. The results were analyzed in terms of dust layer growth, particles’ trajectories and dust layer porosity for a vast range of Peclet numbers. The development of distinct deposition morphologies was found by varying the Peclet number (Pe). With a small Peclet number, diffusion dominated deposition and led to the formation of a more open and looser dust layer structure, while with larger Peclet numbers, convection dominated deposition and was found to form compact deposits. According to the change in the location of the packing densities along the dust layer height direction, the dust layer structure could be divided into three typical parts: the substructure, main profile and surface layer. In addition, the deposit morphologies observed for a high Pe were in good agreement with the experimental results found in the literature. Full article
(This article belongs to the Special Issue Developments and Applications of Scrubbers and Auxiliary Facilities for Air Pollution Control)
►▼ Show Figures

Figure 1

10 pages, 3168 KiB  
Article
Effect of the Installation Angle of Nozzle on the Atomizing Performance of Air-Assisted Spraying Dust Suppression Device
by Huijun Li, Jinxuan Wang, Pengfei Wang, Jiajia Liu, Xinhu Yuan and Han Han
Atmosphere 2022, 13(4), 520; https://doi.org/10.3390/atmos13040520 - 24 Mar 2022
Cited by 1 | Viewed by 1958
Abstract
Investigation of the JJPW-G100 air-assisted spraying dust suppression device was performed to obtain the reasonable installation angle of the nozzle in the air-assisted spraying dust suppression device. First, an equal-scale physical model was established, and then the effect of the installation angle of [...] Read more.
Investigation of the JJPW-G100 air-assisted spraying dust suppression device was performed to obtain the reasonable installation angle of the nozzle in the air-assisted spraying dust suppression device. First, an equal-scale physical model was established, and then the effect of the installation angle of the nozzle on the atomizing performance of the air-assisted spraying dust suppression device was investigated in-depth via numerical simulation. Results showed that the installation angle of the nozzle imposed no significant effect on the spraying range of the air-assisted spraying dust suppression device, while the initial falling range in the spray field increased with the increasing installation angle. At the installation angle of over 45°, the loss of droplets at the outlet of the air cylinder disappeared. Mean droplet size of the spraying dust suppression device increased with the increasing installation angle, which first increased and then dropped with the increasing spraying range. The optimal installation angle of the nozzle was determined as 45°, under which the loss of droplets at the outlet of the air cylinder in the air-assisted spraying dust suppression device can be effectively prevented, while the dust suppression device can maintain a small droplet size and large falling range. Full article
(This article belongs to the Special Issue Developments and Applications of Scrubbers and Auxiliary Facilities for Air Pollution Control)
►▼ Show Figures

Figure 1

11 pages, 3527 KiB  
Article
Potential Use of Wet Scrubbers for the Removal of Tobacco Dust Particles in the Tobacco Industry
by Xinli Zhao, Jifeng Jia, Xiaochuan Li, Li Wang, Yuyao Wang, Haibin Hu, Zhiyuan Shen and Yefeng Jiang
Atmosphere 2022, 13(3), 380; https://doi.org/10.3390/atmos13030380 - 24 Feb 2022
Cited by 1 | Viewed by 2003
Abstract
Tobacco dust represents a critical threat to the operators’ respiratory health. Even when wet scrubbers display high purification efficiencies and strong adaptability to dust, their potential applications in the tobacco industry have not been studied. In the present research, removal efficiency of wet [...] Read more.
Tobacco dust represents a critical threat to the operators’ respiratory health. Even when wet scrubbers display high purification efficiencies and strong adaptability to dust, their potential applications in the tobacco industry have not been studied. In the present research, removal efficiency of wet scrubber for tobacco dust and fine dust were examined at laboratory and industrial level. Results showed that the dust removal efficiency of the wet scrubber under laboratory conditions reached a maximum value of 99.17%. In addition, the dust discharge concentration was reduced to a minimum value of 1.1 mg/m3. Our data indicated that after using the wet scrubber, large dust particles (≥10 μm) were more effectively removed than fine dust particles (≤5 μm). After the use of the wet scrubber at the industrial facility, the overall dust removal efficiency reached a value of 98.9%, and dust concentration at the discharge point was as low as 1 mg/m3. This value complies with the ultra-low discharge standard and industrial production requirements. Our study demonstrated the feasibility of using wet scrubbers in the removal of tobacco dust and provides new insights for dust suppression in the tobacco processing industry. Full article
(This article belongs to the Special Issue Developments and Applications of Scrubbers and Auxiliary Facilities for Air Pollution Control)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop