Porous Permeable Ceramics for Filter Elements Cleaning Hot Gases from Dust

Krasnyi, B. L.; Тарасовский, В. П.; Val'dberg, A. Yu.; Kaznacheeva, T. O.

doi:10.1007/s10717-005-0056-7

Cited by 16 publications

(5 citation statements)

References 3 publications

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“…The permeability of materials is of fundamental importance in many physical science disciplines. In engineering topics of study, permeability controls the rates at which gas or liquid move through particle filters designed to scrub toxins from the flow 7 . In Earth sciences, permeability controls the migration and fluid pressures of hydrocarbons and water in the Earth's porous upper crust, as well as the rates at which pressurized gas is released from active volcanoes 8 .…”

Section: Motivationmentioning

confidence: 99%

Determination of permeability using a classic Darcy water column

Wadsworth

Vossen

Schmid

et al. 2020

American Journal of Physics

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.Pe rme ability is a macros copic prope rty of mate rials with a pe rcolating pore phas e , s uch as many rocks and filte rs . We de s cribe a s imple e xpe rime nt for the e mpirical de te rmination of permeability using a low-cos t me thod s imilar to that us e d by Darcy. We advocate the us e of controlle d cylindrical sintered filters, for which there is theoretical constraint of the pe rme ability as a function of poros ity, agains t which e mpirical re s ults can be compare d. The me thodology pre sented he re provide s a s te p-by-s te p approach to laboratory e xpe rime nts and nume rical te chnique s for fitting a line ar e quation to data, and is appropriate for unde rgraduate Phys ics , Earth Scie nce , or Engine e ring cours e s .

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Section: Motivationmentioning

confidence: 99%

Determination of permeability using a classic Darcy water column

Wadsworth

Vossen

Schmid

et al. 2020

American Journal of Physics

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“…In order to reduce the particle concentration in the flue gas and avoid wear in downstream devices, the hot gas cleaning device is necessary to ensure the long-term stability of the production system. Moreover, the sensible heat and latent heat of clean gas could be used for electricity generation, and the quality of high-value-added products could be promoted after particle removal. − Several hot gas cleaning methods have been proposed, including cyclone separation, , ceramic filtration, − granular bed filtration, , and electrostatic precipitation. An electrostatic precipitator (ESP) can remove suspended particles from a gas stream through electrostatic force with low pressure drop (<500 Pa), low operation cost, and high collection efficiency, which make it an attractive solution. − …”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Electrostatic Precipitation of Low-Resistivity High-Carbon Fly Ash at High Temperature

et al. 2017

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A high-temperature electrostatic precipitator (ESP) is a good solution for hot gas cleaning to ensure the long-term stability of the production system in many energy-consuming industries. The high-carbon fly ash particles in the gasification of coal pyrolysis process are typical particles with low resistivity. In this paper, the characteristics of the coal pyrolysis furnace fly ash (ash A) were compared with coal-fired power plant fly ash (ash B). The effects of their characteristics on particle removal were compared in a wire-plate ESP. The particle collection efficiency was found to decrease with increasing temperature. From 363 to 523 K, the collection efficiencies of both ash samples were as high as above 95%. However, at 623 and 723 K, the collection efficiency of ash A was obviously lower than ash B. A method of enhancing particle removal was proposed by particle conditioning to reduce the occurrence of particle re-entrainment, and the fine calcium carbonate powders were used as the conditioning particles to improve the collection efficiency. When the ratio in mass was 1:1, the particle collection efficiency of ash A increased from 93.5% to 99.2% at 623 K by particle conditioning in the ESP. The optimal effect of conditioning occurred compared with different mix proportion because the resistivity of mixing particles was 1.01 × 10 8 Ω•cm, within the scope of normal resistivity for good operation of ESP.

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Section: Introductionmentioning

confidence: 99%

“…In recent years, the research on high-temperature dust filter, such as granular bed duster, sintered porous metal filter, flexible ceramic filter with the filter bag of ceramic fiber and porous rigid ceramic filter is got more and more attention [4][5][6][7]. Porous rigid ceramic filter is one of the most attractive products with its special strengthens, such as thermostability (the operating temperature is above 800 ℃), anticorrosion and simple structure [5][6][7][8]. Collection efficiency of tubular ceramic filter invented by Schumacher Corporation in Germany, Westinghouse Electric Corporation in U.S. and Asahi Glass Company in Japan reach above 99% with filtering almost 100% of the dust whose diameter is one twentieth more than the aperture of the filter.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on Filtration of High Temperature Dusty Gas Based on Foam Ceramic Material

Feng

Liu

Cao

2012

AMR

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The simulation test device of filtration for high temperature dusty gas was established based on rotating foam ceramic material. The influence of performance parameter of foam ceramic on collection efficiency, concentration of dust emission, dedusting precision and pressure loss were researched under room temperature condition. The results are shown as following: the smaller the aperture of foam ceramics is, the higher filter efficiency, the overall collection efficiency and filter precision are with lower emission concentration of dust and higher gas pressure loss of dedusting system; about 95% of dust particles which is one twenty-sixth more than the aperture of the filter can be filtered by foam ceramic; increasing the thickness is effective ways to improve the filter efficiency at the expense of much increasing gas filtering resistance of dedusting system; with the increasing of foam ceramic aperture-gradient, gas filtering resistance reduces remarkably at the expense of slight reduction of filter efficiency and a little increase of the concentration of dust emission.

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Porous Permeable Ceramics for Filter Elements Cleaning Hot Gases from Dust

Cited by 16 publications

References 3 publications

Determination of permeability using a classic Darcy water column

Determination of permeability using a classic Darcy water column

Experimental Study on Electrostatic Precipitation of Low-Resistivity High-Carbon Fly Ash at High Temperature

Simulation Research on Filtration of High Temperature Dusty Gas Based on Foam Ceramic Material

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