Retention means for mechanical separation and process of making same

Abstract

Abstract A sintered filter element for mechanically separating suspended matter from a liquid or gaseous fluid medium to clarify same, comprising at least two laminated, porous, plate-like filter structures having relatively large planar front and rear surfaces joined by relatively small edge surfaces arranged substantially parallel to each other and spaced up to about five, preferably less than one, inches apart. Each filter structure comprises at least two contacting and adhered, substantially coextensive porous layers whose pores are in open communication over substantially all of the interface between their contiguous surfaces so as to permit flow of the fluid medium from one layer to the other. One of the layers is a retention layer for the suspended matter having a pore size sufficiently small substantially to prevent passage of the suspended matter to be removed from the fluid medium and the other of said layers is a supporting layer having a pore size larger than the pore size of the retention layer. The ratio of the surface area of the retention layer to the volume of filter element is between about 4 and about 60 and the filter element is adapted to be secured within the filter cavity of an extended area filter whereby fluid medium to be clarified is passed through the filter element and out of the filter cavity after it has passed through both the retention layer and supporting layer of each filter structure.

Inventors

• 👤 Ernest J. Breton
• 👤 Julio C. DA Ponte
• 👤 Melville E. Pugh, Jr.
• 👤 Dexter Worden

Bibliographic Details