Modeling of cleaning of dust emission’ in fluidized bed building aspiration’ collector

Кошкарев, С А; Evtushenko, Alexander I.; Roschin, Pavel A.

doi:10.1051/matecconf/201710607020

Cited by 7 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where ρ p and d p are the density and diameter of the particle, respectively; U is the air velocity; v is the kinematic velocity; d ij is the deformation tensor; and the constant is K = 2.594 [10,48,49].…”

Section: Discrete Phase Modelingmentioning

confidence: 99%

Numerical Study of Factors Affecting Particle Suction Efficiency of Pick-Up Head of a Regenerative Air Vacuum Sweeper

et al. 2022

View full text Add to dashboard Cite

The influence of variable operational conditions affects the performance of particle collection and separation of a regenerative air vacuum sweeper. Therefore, the purpose of this paper was to numerically investigate the factors affecting the particle suction efficiency of the pick-up head. Using computational fluid dynamics (CFD), a model of an integrated pick-up head was developed based on the particle suction process to evaluate the particle removal performance. The realizable k-ε and discrete particle models were utilized to study the gas flow field and solid particle trajectories. The particle structure, sweeping speed, secondary airflow, pressure drop, and distance between the particle suction port and the road surface, as factors that affect the particle removal efficiency, were investigated. The results indicate that the particle suction efficiency increases with decreasing sweeper speed. Furthermore, the particle overall removal efficiency increased with a reduction in the distance between the suction port and the road surface as well as the control of the secondary airflow in the system. By increasing the airflow rate at the suction port, high efficiencies were achieved at a high sweeper speed and high particle densities. At a sweeper speed of 6–10 km/h, the results showed that the secondary airflow recirculation varied between 60 to 80 %, while the high-pressure drop ranged from 2200 to 2400 Pa, and the particle suction efficiency recorded was 95%. The numerical analysis results provide a better understanding of the particle suction process and hence could lead to an improvement in the design of the pick-up head.

show abstract

Section: Discrete Phase Modelingmentioning

confidence: 99%

Numerical Study of Factors Affecting Particle Suction Efficiency of Pick-Up Head of a Regenerative Air Vacuum Sweeper

et al. 2022

View full text Add to dashboard Cite

show abstract

“…where ρ p and d p are the density and diameter of the particle, respectively, U is the air velocity, v is the kinematic velocity, k is the turbulence kinetic energy, d ij is the deformation tensor, and the constant is K = 2.594 [39,40]. Re p is the particle Reynolds number based on the relative velocity and is defined by the following equation:…”

Section: Particle Movementmentioning

confidence: 99%

Improvement of Dust Particle Suction Efficiency by Controlling the Airflow of a Regenerative Air Sweeper

et al. 2022

View full text Add to dashboard Cite

In a regenerative air sweeper, airflow and dust particles entering the system are filtered and recirculated within the system. The uncirculated portion of the exhaust air in the system spreads to the ambient air, and PM2.5 dust in the air can poison the environment and adversely affect human health. The development of an airflow control system to reduce road dust emissions and improve air quality was the main contribution of this study. A regenerative air sweeper airflow control system is designed to direct the air from the centrifugal fan back into the pickup head to fully absorb the dust particles and balance the positive and negative air pressures inside the pickup head. The modeling and analysis of the dust control system were performed using an experimental test rig system. A mathematical model of the fundamental parameters of the regenerative air sweeper and dust control system was established. Computational fluid dynamics (CFD) ANSYS was used for the analysis to determine the direction of airflow via the suction and inlet ducts. The discrete particle model (DPM) accurately predicted particle trajectories and measured the suction efficiency of particles of different shapes and types. By controlling the circulating harmful air flow in the system, the amount of PM2.5 released into the atmosphere was reduced by 90%. The suction efficiency of the 200 μm sized sand particles was higher than 95%. The results provide theoretical and methodological assistance for the development of improved road sweeper dust control systems.

show abstract

“…Data of the longitudinal quasi-diffusion mixing coefficient of the liquid-sorbent D inside the proposed apparatus are obtained by marking method to "wash out" from the apparatus of the injected labeled (stained) tracer which was tinted liquid. A description of wellknown injected tracer's tinted liquid method and technique is available in the literature, for example, [16,21]. The average residence dwell time arof the liquidsorbent in the apparatus was determined experimentally at the facility [16,21].…”

Section: Mass Of Gasoline Vapormentioning

confidence: 99%

“…A description of wellknown injected tracer's tinted liquid method and technique is available in the literature, for example, [16,21]. The average residence dwell time arof the liquidsorbent in the apparatus was determined experimentally at the facility [16,21].…”

Section: Mass Of Gasoline Vapormentioning

confidence: 99%

See 1 more Smart Citation

Increasing Environmental Safety of Urbanized Territories Applying Recovery Absorber in Reduction of Emissions of Gas Station

Соколова¹,

Кошкарев²,

Magomedov³

et al. 2021

Proceedings of the Second Conference on Sustainable Development: Industrial Future of Territories (IFT 2021)

View full text Add to dashboard Cite

The issue of this article is improving the ecological safety of gas filling stations (GFS) that are placed within urban areas and the boundary of the sanitary protection zone. It has been determined that the main share of GFS' emissions is produced by petroleum products, especially when reservoirs are filled fuel storage tanks. It was proposed the way for reduce emissions from fuel storage tanks during the filled operation. It could be reach by applying of an apparatus for the absorption of gasoline vapors from GFS' emissions into the atmosphere. There presented the results by proposed devices for cleaning emissions GFS' in this article. It was obtained the regressions of recovery effectiveness for the improving design devices by mathematical processing for fuel oil and kerosene as work sorbent liquids. There are suggesting some approaches for modeling and engineering calculation's ways of such absorbing recovery devices in this article. The research results were implemented for design of full scale industrial set up that was installed and successful tested in one aspiration schemes GFS situated in Stavropol region of Russia. It was showed the reliability of the proposed device for practical use in the structure of the city municipal economy.

show abstract

Modeling of cleaning of dust emission’ in fluidized bed building aspiration’ collector

Cited by 7 publications

References 14 publications

Numerical Study of Factors Affecting Particle Suction Efficiency of Pick-Up Head of a Regenerative Air Vacuum Sweeper

Numerical Study of Factors Affecting Particle Suction Efficiency of Pick-Up Head of a Regenerative Air Vacuum Sweeper

Improvement of Dust Particle Suction Efficiency by Controlling the Airflow of a Regenerative Air Sweeper

Increasing Environmental Safety of Urbanized Territories Applying Recovery Absorber in Reduction of Emissions of Gas Station

Contact Info

Product

Resources

About