Numerical and experimental study of pulse-jet cleaning in fabric filters

Andersen, B.O.; Nielsen, Niels Finderup; Walther, Jens Honoré

doi:10.1016/j.powtec.2015.12.028

Cited by 48 publications

(14 citation statements)

References 24 publications

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“…The static pressure difference across pleated filter media and peak static pressure were analyzed to study the effect of using annular-slit nozzle on the efficiency of reverse flow cleaning, especially at the top region of pleated filter cartridges. Andersen et al [25] and other researchers also adopted CFD and experiments to study the pulsed-jet cleaning system. Experimental pressure measurements are used as validation data for the full three-dimensional (3D) CFD model, which also is used to investigate the basic physics of subsonic/ supersonic pulsed-jet cleaning, the jet behavior and the effect of the venturi in relation to a typical pulsejet cleaned fabric filter.…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Numerical Study on the Cleaning of Pleated Bag Filters Using Low-Pressure Pulsed-Jets

Chen¹,

Sun²,

Qian³

et al. 2022

Fluid Dynamics &Amp; Materials Processing

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Section: Introductionmentioning

confidence: 99%

An Experimental and Numerical Study on the Cleaning of Pleated Bag Filters Using Low-Pressure Pulsed-Jets

Chen¹,

Sun²,

Qian³

et al. 2022

Fluid Dynamics &Amp; Materials Processing

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“…Bi et al [14] found out that when the same cleaning effect was achieved, the consumption of compressed air required by the filter bag with the venturi tube was about 40% lower than that without the venturi tube. Andersen et al [15] pointed out the importance of optimizing venturi tube design in low-pressure filters by computational fluid dynamics (CFD) numerical simulation, and considered that the working principle of the venturi was to restrict backflow, which was detrimental to the pressure rise in the bags.…”

Section: Introductionmentioning

confidence: 99%

Effect of Venturi Structures on the Cleaning Performance of a Pulse Jet Baghouse

Liu

Huang

2019

Applied Sciences

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In order to study the effect of venturi structures on the cleaning performance of a pulse jet baghouse, several cleaning tests are carried out applying the pulse jet test bench. Experiments are performed using different filter bags with venturi tubes of varying throat diameters and lengths. Peak pressure and peak pressure arrival time are selected to evaluate the cleaning efficiency under different conditions. On this basis, a series of comparative experiments are conducted between a typical venturi-type and a new venturi tube design on a semi-industrial pulse jet baghouse. The effects of the new venturi-type on baghouse cleaning performance and dust emission are studied. The results show that pulsing air pressure has a significant effect on bag-cleaning performance; the larger the throat diameter and the shorter the venturi length, the higher the peak pressure and the shorter the peak pressure arrival time. This improves the cleaning efficiency of the filter bags. The new venturi design changes the distribution of the cleaning pressure in the vicinity of the bag mouth, effectively extending the cleaning cycle and reducing the energy consumption as well as reducing the dust emission concentration of the baghouse.

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“…They also revealed that the pulsation considerably accelerates the expansion of the jet and significantly improves the diffusion and entrainment as well as the heat exchange with the surrounding environment in the first diameters. Andersen et al (2016) investigated numerically and experimentally the cleaning of low pressure fabric filters (2 bars) by pulsed jet. They showed that the 3D unsteady RANS simulation is ideal to optimize the design of the cleaning system in fabric filters with pulse jet.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of an Acoustically Excited Plane Jet at Low Reynolds Numbers

Marzouk¹,

Hnaien²

2019

JAFM

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The dynamics of a vertical two-dimensional air jet under acoustic excitations at a low Reynolds number are investigated experimentally. The perturbation is introduced by means of a loudspeaker located in a settling chamber before the nozzle exit. The experiments are operated at Strouhal number St ranging from 0 to 1 and for different pulsation amplitudes. A laser plan is used to visualize the flow and the hot-wire anemometry for more specific measures of the mean and fluctuation velocity. The discussion is focused on the influence of two parameters governing the flow: the Strouhal number St and pulsing amplitude. The main results show that the flow consisting of the vortex propagating downstream a nozzle exit is strongly affected by the excitation. Indeed, the introduction of an external perturbation introduces a more rapid degeneration of the potential core with the appearance of vortices near the nozzle as the pulsation amplitude increases. These vortices are amplified and become larger than the nozzle width which induces the enhancing of the entrainment and mixing effects of the shear layers. Another very important phenomenon is observed: the excitation has led to the formation of a switching from the asymmetric mode (sinuous mode) to the symmetric mode (varicose mode).

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Numerical and experimental study of pulse-jet cleaning in fabric filters

Cited by 48 publications

References 24 publications

An Experimental and Numerical Study on the Cleaning of Pleated Bag Filters Using Low-Pressure Pulsed-Jets

An Experimental and Numerical Study on the Cleaning of Pleated Bag Filters Using Low-Pressure Pulsed-Jets

Effect of Venturi Structures on the Cleaning Performance of a Pulse Jet Baghouse

Experimental Study of an Acoustically Excited Plane Jet at Low Reynolds Numbers

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