Preparation and characterization of porous cordierite pellets and use as a diesel particulate filter
- Authors
- Park, Jai Koo; Park, Jay Hyun; Park, Jung Wook; Kim, Hong Seok; Jeong, Young Il
- Issue Date
- Jul-2007
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- diesel vehicle; particulate matter; porous pellet; DPF
- Citation
- SEPARATION AND PURIFICATION TECHNOLOGY, v.55, no.3, pp.321 - 326
- Indexed
- SCIE
SCOPUS
- Journal Title
- SEPARATION AND PURIFICATION TECHNOLOGY
- Volume
- 55
- Number
- 3
- Start Page
- 321
- End Page
- 326
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/179866
- DOI
- 10.1016/j.seppur.2006.11.009
- ISSN
- 1383-5866
- Abstract
- This paper discusses the preparation and characterization of porous pellet filters for a diesel particulate filter (DPF). The process for creating the porous ceramic pellets was developed using simple gelcasting and a bubble-in-water-in-oil type of pseudo-double-emulsion. The pellets, consisting of a foamed cordierite suspension, were dispersed and consolidated in spherical shapes in liquid paraffin as gelation progressed, and were prepared by a conventional mechanical foaming method combined with gelcasting. In comparison with a wall-flow filter, the pellet filter has the advantages of being free of cracks during regeneration and having a flexible shape. Experiments were conducted in a test simulation of diesel engine exhaust conditions. Pressure drop and particle loading rate were compared using two pellet filters having porosities of 70% and 0%, respectively. Regeneration capability was also tested. The filter which mixed I and 2 mm pellets demonstrated feasibility as a DPE
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