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Analysis on filtration characteristic of wall-flow filter for ash deposition in cake
- Source :
- Journal of Aerosol Science. 95:73-83
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Based on the characteristics of ash cake deposition, the single channel model and the packed bed model, a mathematical model of filtration process of wall-flow filter for ash deposition in cake has been proposed. The effects of the amount of ash load and the distribution of ash deposition in cake on the filtration characteristic of filter are analyzed. Results show that the filtration efficiency improves rapidly with the increase of ash load while ash layer proportion is nonzero. When ash layer proportion is zero (i.e. ash plug proportion is 100%), the filtration efficiency decreases with the increase of ash load. Otherwise, the filtration efficiency improves with the increase of ash layer proportion while the ash load is constant. Considering the effects of ash on both filtration efficiency and flow resistance, the active regeneration system is more helpful to balance the correlation between filtration efficiency and flow resistance for ash tends to build up at the end of the channels in active system. The experimental results have verified the accuracy of mathematical model.
- Subjects :
- inorganic chemicals
Atmospheric Science
Environmental Engineering
Materials science
020209 energy
Flow (psychology)
02 engineering and technology
010501 environmental sciences
complex mixtures
01 natural sciences
law.invention
law
0202 electrical engineering, electronic engineering, information engineering
Deposition (phase transition)
Spark plug
Filtration
0105 earth and related environmental sciences
Fluid Flow and Transfer Processes
Packed bed
Diesel particulate filter
Chromatography
Mechanical Engineering
technology, industry, and agriculture
respiratory system
musculoskeletal system
Pulp and paper industry
Pollution
Filter (aquarium)
Layer (electronics)
Subjects
Details
- ISSN :
- 00218502
- Volume :
- 95
- Database :
- OpenAIRE
- Journal :
- Journal of Aerosol Science
- Accession number :
- edsair.doi...........6c853792030e2254e6cdb348154958ea