Dust removal and desulphurization in a novel venturi scrubber

Mi, Tie; Yu, Xinran

doi:10.1016/j.cep.2012.07.010

Cited by 38 publications

(11 citation statements)

References 20 publications

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“…A novel design of venturi scrubbers was proposed to improve a desulphurization process using shuttle-shape bodies inside a rectangular duct that would be equivalent to several venturi scrubbers working in a parallel arrangement that improved dust collection and the desulphurization process [12].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow Behavior within a Venturi Scrubber

Toledo-Melchor

Torres

Bernal³

et al. 2014

Mathematical Problems in Engineering

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The present work details the three-dimensional numerical simulation of single-phase and two-phase flow (air-water) in a venturi scrubber with an inlet and throat diameters of 250 and 122.5 mm, respectively. The dimensions and operating parameters correspond to industrial applications. The mass flow rate conditions were 0.483 kg/s, 0.736 kg/s, 0.861 kg/s, and 0.987 kg/s for the gas only simulation; the mass flow rate for the liquid was 0.013 kg/s and 0.038 kg/s. The gas flow was simulated in five geometries with different converging and diverging angles while the two-phase flow was only simulated for one geometry. The results obtained were validated with experimental data obtained by other researchers. The results show that the pressure drop depends significantly on the gas flow rate and that water flow rate does not have significant effects neither on the pressure drop nor on the fluid maximum velocity within the scrubber.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow Behavior within a Venturi Scrubber

Toledo-Melchor

Torres

Bernal³

et al. 2014

Mathematical Problems in Engineering

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“…Wet scrubber techniques are applied in many industrial processes, due to their better capacity to remove fine particles and soluble pollutants from gas streams [7]. Nonetheless, major drawbacks of these scrubbing systems are related to the high energy cost associated with successful removal of submicron particles.…”

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confidence: 99%

Performance of a cyclone scrubber on removal of fine particulate matter

Achiles

Guerra

2020

CI&CEQ

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Article Highlights • Cyclone spray scrubber is an effective device for the removal of fine particles • Great performance on fine particulate removal at low L/G flow ratio and pressure drop conditions • Inlet air velocity and water injection position influence the collection efficiency • Liquid-togas flow ratio strongly affects the performance of cyclone spray scrubber • Smaller droplet sizes increase the collection efficiency of fine solid particles Abstract Cyclones are not classified as effective devices for removing fine particles, while high efficiency wet scrubbers usually have high operational costs. In order to achieve better performance, the aim of this study is to evaluate, for the first time, a cyclone scrubber design based on the dimensions of a Stairmand cyclone separator with the inclusion of liquid injection nozzles located in different positions to improve the separation of fine particles. Given the lack of studies considering the effect of liquid injection and other operational conditions in the removal performance of a cyclone scrubber with Stairmand dimensions, the present paper provides a complete evaluation of these effects for the separation of sugar cane bagasse ash from air. The parameters investigated were inlet gas velocity, liquid injection position, liquid-togas flow ratio and droplet size distribution. The cyclone scrubber performance was evaluated considering collection efficiency and pressure drop. Overall efficiency of almost 99% and low-pressure drop was achieved by employing a liquid-togas flow ratio of 0.43 L/m³ for the collection of ash from the combustion of sugar cane bagasse. Grade efficiencies revealed that injecting droplets into cyclones significantly improved the removal of fine particles with an aerodynamic diameter less than 2.5 µm.

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“…The dust removal efficiency of 99.5% is achieved at a high airflow rate or gas velocity of 220 m/s having an initial dust concentration of (0.1-1) g/m 3 [158] . The absorption of gaseous pollutants and dust particulates at a comparatively lower pressure drop proves that the venturi scrubber reduces the work or energy duty of the device accordingly [159] . One investigation in 2020 shows that out of all the wet scrubbing technology, venturi scrubbing technology turns out to be one of the best cleaning devices.…”

Section: Probable Engineered Technologies For Control Of Aerosol Cum mentioning

confidence: 99%