Filter including a porous discriminating layer on a fused single

Details Filter including a porous discriminating layer on a fused single Filter including a porous discriminating layer on a fused single

1991-12-05

1993-03-30

Sever, Frank

Gas separation

Specific media material

Ceramic or sintered

55DIG5, 55DIG30, 2105101, B01D 3920

Patent

active

051980070

ABSTRACT:
A filter useful for separating contaminants from fluids includes a fused single crystal acicular ceramic support having a discriminating layer thereon, such as a sintered, porous alpha-alumina membrane, on at least part of the support. The support is preferably composed of a non-stoichiometric acicular mullite of about 76 percent by weight Al.sub.2 O.sub.3 and about 24 percent by weight SiO.sub.2. The support can be any one of a variety of shapes, but is conveniently elongated in form and preferably includes a plurality of parallel channels through it. The support may be in either a dead-end or cross-flow configuration. In the dead-end configuration, half of the channel holes at each end are plugged in a checkerboard arrangement with the holes open at one end and plugged at the other end. In the cross-flow configuration, all channels are connected by a series of shallow slits cut in the filter, and no end plugs are used.

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