Aerosol filtration by a cocurrent moving granular bed: Penetration mechanisms

Kalinowski, T.W.; Leith, David

doi:10.1016/0160-4120(81)90050-7

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…In a 1000-nr test run with this filter at atmospheric pressure and 1143 K, particle-collection efficiency was found to decrease from 99% for particles having an aerodynamic diameter 2 4 pm to about 93.2%+1.0% for particles of diameter about 0.3 pm. Kalinowski and Leith (1980) report on their results obtained in a 20.3-cm-diam cocurrent GBF, which they claim should be preferred over a continuously moving cross-flow design. In their arrangement, the particle-laden gas passes downward through a descending bed of media granules while clean granules are added continuously at the top of the bed.…”

Section: Granular-bed Filtersmentioning

confidence: 99%

Technology Status of Particulate Removal from High-Temperature High-Pressure Combustion Gases

Saxena

Henry

Podolski

1982

Aerosol Science and Technology

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The adoption of coal-fired pressurized fluidized-bedThese include conventional and augmented cyclones; combined-cycle combustion systems by utilities for porous metal, fabric, and ceramic membrane filters; electric power generation depends to a large extent on the fixed-, continuously moving-, and fluidized-bed development of an efficient and economic cleanup system granular filters; electrostatic precipitators; as well as between the combustor and gas turbine. To accomplish several other novel separation devices. The results of tests particulate removal from a dust-laden gas stream, a of these devices are discussed in relation to pressurized number of separation devices have been developed. fluidized-bed combustion applications.

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Section: Granular-bed Filtersmentioning

confidence: 99%

Technology Status of Particulate Removal from High-Temperature High-Pressure Combustion Gases

Saxena

Henry

Podolski

1982

Aerosol Science and Technology

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“…Besides, the dust cake was broken as collector particles dislocated during movement, which resulted in the moving bed to feature a lower collection efficiency than the fixed bed under some condition . Many pieces of evidence were found in research studies that dust cake formation was crucial to achieve high collection efficiency for the filter system. − However, operating below the critical value clogged the filter and the filter was eventually broken through, which resulted in decrease in collection efficiency. A lot of complex research results concluded that overmuch dust accumulated in the bed, hindering the movement of the collector particle, the GBF should work with preseparators in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Swirl Space Ratio on the Performance of a Coupling Cyclone with a Built-In Granular Bed Filter: An Experimental Examination

Chang

Dao-ming

Gao

et al. 2020

Ind. Eng. Chem. Res.

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The gas–solid separator of coupling cyclone with a built-in granular bed filter (GBF) was proposed to capture dust emitted from the industrial source. The coarse dust was separated by the rotatory motion, and the fine dust entrained by the swirl was collected by the GBF. A new geometrical parameter, named as the swirl space ratio, was introduced to characterize the mutual impacts on the coupled separator. Experimental results showed that the pressure drop decreased 10% when the swirl space ratio increased from 0.37 to 0.43, while the collection efficiency was enhanced significantly. The coupled separator with a large swirl space ratio exhibited excellent separation characteristics according to the separation quality factor. Furthermore, the contribution ratio of the cyclone shell was strengthened by increasing the swirl space ratio. The variation in the bed voidage and the pressure drop was completely opposite. The breakage phenomenon was observed in the circulation of the collector particles.

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Experimental study of the gas flow behavior in the inlet of a granular bed filter

Hsu

Hsiau

2011

Advanced Powder Technology

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Aerosol filtration by a cocurrent moving granular bed: Penetration mechanisms

Cited by 4 publications

References 4 publications

Technology Status of Particulate Removal from High-Temperature High-Pressure Combustion Gases

Technology Status of Particulate Removal from High-Temperature High-Pressure Combustion Gases

Effects of the Swirl Space Ratio on the Performance of a Coupling Cyclone with a Built-In Granular Bed Filter: An Experimental Examination

Experimental study of the gas flow behavior in the inlet of a granular bed filter

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