Effects of temperature, dust concentration, and filtration superficial velocity on the loading behavior and dust cakes of ceramic candle filters during hot gas filtration

Lin, Justin Chun Te; Hsiao, Ta-Chih; Hsiau, Shu San; Chen, Da Ren; Chen, Yen Kai; Huang, Sheng-Hsiu; Chen, Chih-Chieh; Chang, Moo Been

doi:10.1016/j.seppur.2017.06.014

Cited by 36 publications

(17 citation statements)

References 36 publications

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“…Literature also showed that changing the temperature of the air passed through the filter could directly affect the clogging phenomenon, since it had a direct effect on a filter mass [14]. Lin et al [24] proved the association of the filtration efficiency with the temperature changes of the passing air. At this point, it is noted that the temperature effect is also associated with the type of material to be used as the filter medium.…”

Section: Ambient Temperature (X 1 )mentioning

confidence: 99%

“…At this point, it is noted that the temperature effect is also associated with the type of material to be used as the filter medium. For example, Lin et al [24] used a tailor-made ceramic filter element testing system and two ceramic candle filters (CFs) with different filtration characteristics to investigate the effects of various parameters (e.g. temperature, dust concentration and filtration superficial velocity) on the two performance measures (e.g.…”

Section: Ambient Temperature (X 1 )mentioning

confidence: 99%

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Modelling the clogging of gas turbine filter houses in heavy-duty power generation systems

Abdul‐Wahab

Omer

Yetilmezsoy

et al. 2020

Mathematical and Computer Modelling of Dynamical Systems

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A prognostic approach based on a MISO (multiple inputs and single output) fuzzy logic model was introduced to estimate the pressure difference across a gas turbine (GT) filter house in a heavy-duty power generation system. For modelling and simulation of clogging of the GT filter house, nine real-time process variables (ambient temperature, humidity, ambient pressure, GT produced load, inlet guide vane position, airflow rate, wind speed, wind direction and PM10 dust concentration) were fuzzified using a graphical user interface within the framework of an artificial intelligence-based methodology. The results revealed that the proposed fuzzy logic model produced very small deviations and showed a superior predictive performance than the conventional multiple regression methodology, with a very high determination coefficient of 0.974. A complicated dynamic process, such as clogging phenomenonin heavy-duty GT system, was successfully modelled due to high capability of the fuzzy logic-based prognostic approach in capturing the nonlinear interactions.

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Section: Ambient Temperature (X 1 )mentioning

confidence: 99%

Section: Ambient Temperature (X 1 )mentioning

confidence: 99%

Modelling the clogging of gas turbine filter houses in heavy-duty power generation systems

Abdul‐Wahab

Omer

Yetilmezsoy

et al. 2020

Mathematical and Computer Modelling of Dynamical Systems

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“…2,3 Currently, rigid self-supporting filter elements composed of porous ceramics or metal powder have demonstrated significant advantages for filtering dust particles smaller than 10 mm. [4][5][6][7][8][9] Pulse-jet cleaning has become a key technology for maintaining stable and continuous operation of rigid filters. [9][10][11] To date, most researchers have evaluated the performance of pulse-jet cleaning by measuring the transient pressure inside the filter candle or by directly observing the morphology of the captured dust particles.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the different particle size dust releases from rigid filter candles during pulse-jet cleaning

Luan

Liu

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Rigid filters made of ceramic or metal are widely used to remove solid particles from hot gases at temperature above 260 °C in the petrochemical and coal industries. Pulse-jet cleaning of fine dust from rigid filter candles plays a critical role in the long-term operation of these filters. In this study, an experimental apparatus was fabricated to investigate the behavior of a 2050 mm filter candle, which included monitoring the variation of pressure dynamic characteristics over time and observing the release of dust layers that allowed an analysis of the cleaning performance of ISO 12103-1 test dusts with different particle size distributions. These results showed the release behavior of these dusts could be divided into five stages: radial expansion, axial crack, flaky release, irregular disruption and secondary deposition. The cleaning performance of smaller sized dust particles was less efficient as compared with larger sized dust particles under the same operating conditions primarily because large, flaky-shaped dust aggregates formed during the first three stages were easily broken into smaller, dispersed fragments during irregular disruption that forced more particles back to the filter surface during secondary deposition. Also, a “low-pressure and long-pulse width” cleaning method improved the cleaning efficiency of the A1 ultrafine test dust from 81.4% to 95.9%.

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“…9,10 Therefore, the filtration efficiency of the bag dust collector mainly depended on the type, diameter and molding method of fibers in the filter materials and sewing threads, and the size of gaps and holes in the filter bags. [11][12][13][14] At present, most studies have focused on filtration velocity, 15,16 filtration efficiency, 17 air permeability and filtration resistance of filter bags. 18 Park et al 19 numerically investigated flow characteristics along the bag filter in detail, and made the new finding that the filtration velocity was non-uniform along the axial direction of a long filter bag when the height of the filter was greater than 10 m. Sun et al 20 investigated the filtration and loading performance of two kinds of composite filter media with different nanostructures against NaCl particles and soot agglomerates.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Effects of alkali solution on the durability of sewing thread made of modified polyphenylene sulfide and polytetrafluoroethylene

Huang

Zhang

Alassod

et al. 2020

Textile Research Journal

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The alkali resistance of sewing thread made of modified polyphenylene sulfide and polytetrafluoroethylene (MPPS/PTFE) has a crucial influence when used in the field of filtering high-temperature dusty gas. Therefore, the effects of alkali (NaOH) solution on the properties of MPPS/PTFE sewing thread at different temperatures, different concentrations and different times were studied. The results showed that white particulate matter and bump materials appeared on the surface of MPPS fibers in the MPPS/PTFE sewing thread. The maximum strength loss of MPPS/PTFE sewing thread was around 12.9% and the maximum deviation of elongation at break was about 4.5% after treatment with NaOH solution at a temperature of 25℃ and a concentration of 2 mol/L for 120 h. By analysis, it could be concluded that the structure of the benzene ring skeleton of the macromolecular chain in the MPPS/PTFE sewing thread did not change after treatment with NaOH solution, but the C-S bonds attached to the benzene ring in the MPPS/PTFE sewing thread had rotated, or even broken, which could be confirmed by the curves of Fourier transform infrared spectroscopy. The thermal stability of MPPS/PTFE sewing thread was decreased after treatment with NaOH solution, which was caused by surface damage of MPPS fibers in the MPPS/PTFE sewing thread.

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Effects of temperature, dust concentration, and filtration superficial velocity on the loading behavior and dust cakes of ceramic candle filters during hot gas filtration

Cited by 36 publications

References 36 publications

Modelling the clogging of gas turbine filter houses in heavy-duty power generation systems

Modelling the clogging of gas turbine filter houses in heavy-duty power generation systems

Investigation of the different particle size dust releases from rigid filter candles during pulse-jet cleaning

Effects of alkali solution on the durability of sewing thread made of modified polyphenylene sulfide and polytetrafluoroethylene

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