Ceramic filter with plural layers of different porosity

Details Ceramic filter with plural layers of different porosity Ceramic filter with plural layers of different porosity

1986-01-06

1986-12-16

Nozick, Bernard

Gas separation

Two or more separators

Plies or layers of different characteristics or orientation

55523, 55DIG30, B01D 3906

Patent

active

046294830

ABSTRACT:
A monolithic, layered, tubular ceramic filter structure with clearly defined layers of different permeabilities and porosities formed by compressing plastic masses of ceramic materials of selected particle size with binders to form the substrate layer with the desired, typically more open structure, and then compressing the substrate layer and subsequent layers of selected, typically less open structure in successive compression steps to form a composite body, and then firing the composite body to form a ceramically monolithic porous body with controlled uniform pressure drop and particle size retention characteristics across its entire surface.

REFERENCES:
patent: 3182803 (1965-05-01), Chisholm
patent: 4133657 (1979-01-01), Krogsrud
patent: 4251239 (1981-02-01), Clyde et al.
patent: 4407967 (1983-10-01), Luks
patent: 4436538 (1984-03-01), Tomita et al.
Refractron Corp., Ceramic Porous Media Product Data, Aug. 1985.

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