Permeability optimization and performance evaluation of hot aerosol filters made using foam incorporated alumina suspension.
Porous ceramic samples were prepared from aqueous foam incorporated alumina suspension for application as hot aerosol filtering membrane. The procedure for establishment of membrane features required to maintain a desired flow condition was theoretically described and experimental work was designed to prepare ceramic membranes to meet the predicted criteria. Two best membranes, thus prepared, were selected for permeability tests up to 700 degrees C and their total and fractional collection efficiencies were experimentally evaluated. Reasonably good performance was achieved at room temperature, while at 700 degrees C, increased permeability was obtained with significant reduction in collection efficiency, which was explained by a combination of thermal expansion of the structure and changes in the gas properties.
Chemical Engineering Course, University of Ribeirão Preto, Ribeirânia, 14565-380 Ribeirão Preto, SP, Brazil. muriloinnocentini@yahoo.com.br
Murilo D M
MD
Innocentini
Vanessa P
VP
Rodrigues
Roberto C O
RC
Romano
Rafael G
RG
Pileggi
Gracinda M C
GM
Silva
José R
JR
Coury
D000336:Aerosols; D000465:Algorithms; D000537:Aluminum Oxide / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry*; D005374:Filtration; D008855:Microscopy, Electron, Scanning; D010539:Permeability; D016062:Porosity; D012996:Solutions; D013535:Suspensions; D013696:Temperature; D013718:Tensile Strength; D014783:Viscosity; D014867:Water
D000336:Aerosols; D012996:Solutions; D013535:Suspensions; D014867:Water; D000537:Aluminum Oxide