Charging effect on separation performance of outer vortex type cyclone for submicron particles at different operating parameters

Zhang, Jianping; Zha, Zhenting; Che, Peng; Ding, Honglei; Pan, Weiguo

doi:10.1080/02726351.2019.1571542

Cited by 13 publications

(6 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are also those who add a filter to the gas exit of the cyclone [23]. Zhang et al [24] redesigned the vortex finder of a cyclone with corona wires, thereby decreasing submicronsized PM.…”

Section: Figure 1 Adsorption Mechanism In Cyclonementioning

confidence: 99%

Simultaneous Fine Particulate Matter Separation and CO2 Adsorption in a Cyclone Separator with a Fixed Bed Bottom Ash from a Palm Oil Mill Boiler: A Simulation Study

Sylvia¹,

Dewi²,

Aprilia³

et al. 2023

MMEP

View full text Add to dashboard Cite

At palm oil mills, a cyclone is an integrated piece of equipment in the boiler with the sole purpose of separating air and particles resulting from the shell and fiber combustion process in the boiler unit. Meanwhile, the CO2 gas emissions produced cannot be reduced simultaneously in the boiler unit. This study aims to minimize the amount of fine particulate matter resulting from the combustion process while reducing CO2 emissions. By modifying the cyclone separator, namely by placing the adsorbent from bottom ash on the cyclone vortex finder, the research was conducted using the Computational Fluid Dynamics Method. This study was carried out by varying the inlet velocity, namely 10; 15; 20; 25; and 30 m/s, and the bed height at the cyclone separator gas outlet is 0; 0.155; 0.310; and 0.460 meters. The RNG model equation k-𝜀, capable of supporting device direction simulation flow, is modified with a mass load of 0.1 kg/s and an operating temperature of 573 K to determine particle collection efficiency, CO2 adsorption percentage, and pressure drop. The results showed that at a bed height of 0.465 m and an inlet velocity of 30 m/s, the cyclone separator achieved the greatest particle collection efficiency of 92.61 percent. At a bed height of 0.465 m and an inlet velocity of 10 m/s, the maximum percentage of CO2 adsorption is 99.61 percent. Cyclone modification by using bottom ash as an adsorbent is able to reduce CO2 emissions and minimize fine particulates simultaneously.

show abstract

Section: Figure 1 Adsorption Mechanism In Cyclonementioning

confidence: 99%

Simultaneous Fine Particulate Matter Separation and CO2 Adsorption in a Cyclone Separator with a Fixed Bed Bottom Ash from a Palm Oil Mill Boiler: A Simulation Study

Sylvia¹,

Dewi²,

Aprilia³

et al. 2023

MMEP

View full text Add to dashboard Cite

show abstract

“…[66] The subject of the third most cited article (88 cites) was about vortex cyclones and submicron particles entitled 'Charging Effect on Separation Performance of Outer Vortex Type Cyclone for Submicron Particles at Different Operating Parameters' in Particulate Science And Technology. [67] The Canadian Journal of Chemical Engineering published 17 articles on CFD in 2020, and the three top cited were: 'Effect of Substrate Geometry and Flow Condition on the Turbulence Generation After a Monolith,' [68] 'Numerical Simulation of the Mass Transfer Process of CO 2 Absorption by Different Solutions in a Microchannel,' [69] and 'A CFD-DEM Approach to Study the Breakup of Fractal Agglomerates in an Internal Mixer.' [70] 7.1 | Limitations CFD studies are only as accurate as the models upon which they are built-turbulence models unless direct numerical simulations are performed, multiphase simularelying either on the kinetic theory of granular flow or on the DEM approach.…”

Section: Applicationsmentioning

confidence: 99%

“…[ 66 ] The subject of the third most cited article (88 cites) was about vortex cyclones and submicron particles entitled ‘Charging Effect on Separation Performance of Outer Vortex Type Cyclone for Submicron Particles at Different Operating Parameters’ in Particulate Science And Technology . [ 67 ]…”

Section: Applicationsmentioning

confidence: 99%

Experimental methods in chemical engineering: Computational fluid dynamics/finite volume method—CFD/FVM

et al. 2022

View full text Add to dashboard Cite

Computational fluid dynamics (CFD) applies numerical methods to solve transport phenomena problems. These include, for example, problems related to fluid flow comprising the Navier–Stokes transport equations for either compressible or incompressible fluids, together with turbulence models and continuity equations for single and multi‐component (reacting and inert) systems. The design space is first segmented into discrete volume elements (meshing). The finite volume method, the subject of this article, discretizes the equations in time and space to produce a set of non‐linear algebraic expressions that are assigned to each volume element—cell. The system of equations is solved iteratively with algorithms like the semi‐implicit method for pressure‐linked equations (SIMPLE) and the pressure implicit splitting of operators (PISO). CFD is especially useful for testing multiple design elements because it is often faster and cheaper than experiments. The downside is that this numerical method is based on models that require validation to check their accuracy. According to a bibliometric analysis, the broad research domains in chemical engineering include: (1) dynamics and CFD‐DEM, (2) fluid flow, heat transfer, and turbulence, (3) mass transfer and combustion, (4) ventilation and the environment, and (5) design and optimization. Here, we review the basic theoretical concepts of CFD and illustrate how to set up a problem in the open‐source software OpenFOAM to isomerize n‐butane to i‐butane in a notched reactor under turbulent conditions. We simulated the problem with 1000, 4000, and 16 000 cells. According to the Richardson extrapolation, the simulation underestimates the adiabatic temperature rise by 7% with 16 000 cells.

show abstract

“…[26] Zhang et al proposed that the separation performance was better at a lower flue gas velocity and lower temperature. [27] However, only depending on the tangential force is unable to separate the fine particles in cyclones. Heterogeneous condensation is one of the most promising preconditioning technologies to improve fine particle separation efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…[ 26 ] Zhang et al proposed that the separation performance was better at a lower flue gas velocity and lower temperature. [ 27 ]…”

Section: Introductionmentioning

confidence: 99%

Multi‐object optimization study on the performance of gas cyclones based on heterogeneous condensation and turbulent agglomeration

et al. 2023

View full text Add to dashboard Cite

Improving the separation efficiency of fine particles becomes more and more critical as environmental pollution aggravates. This study aims to investigate the effects of four key parameters on the performance of gas cyclones, including cyclone body height, particle concentration, initial supersaturation degree, and inlet temperature. Then, the two‐way coupling numerical model, in which is the process of heterogeneous condensation and agglomeration for insoluble fine particles, was achieved by user defined function. On this basis, the response surface analysis method and multi‐objective genetic algorithm were adopted to optimize the cyclone. The results show that when the particle concentration is less than 1000 mg/m3, the separation efficiency can reach above 95%. The initial supersaturation degree has the greatest effect on the separation efficiency and vapour consumption rate, while the cyclone body height is the most critical factor on the pressure drop. As the particle concentration increases, the separation efficiency decreases at first and then keeps almost stable. With the increase of inlet temperature, the separation efficiency is enhanced, and the pressure drop reduces. These research results can provide important guidance for the optimization and engineering application of this technology.

show abstract

Charging effect on separation performance of outer vortex type cyclone for submicron particles at different operating parameters

Cited by 13 publications

References 41 publications

Simultaneous Fine Particulate Matter Separation and CO2 Adsorption in a Cyclone Separator with a Fixed Bed Bottom Ash from a Palm Oil Mill Boiler: A Simulation Study

Simultaneous Fine Particulate Matter Separation and CO2 Adsorption in a Cyclone Separator with a Fixed Bed Bottom Ash from a Palm Oil Mill Boiler: A Simulation Study

Experimental methods in chemical engineering: Computational fluid dynamics/finite volume method—CFD/FVM

Multi‐object optimization study on the performance of gas cyclones based on heterogeneous condensation and turbulent agglomeration

Contact Info

Product

Resources

About