Filter block and method of making the same

Details Filter block and method of making the same Filter block and method of making the same

1977-12-27

1979-03-13

Sever, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210502, 210504, 210510, B01D 2704, B01D 3914

Patent

active

041441710

ABSTRACT:
A filter-drier block for use in refrigeration systems to filter and remove moisture from the refrigerant fluid, and the method of making the block. The block is comprised of granular adsorbent material bound together to form a rigid block by the use of phenolic resin and polyisocyanate binders and characterized by a low pressure drop for fluid passing through the block. The method of making the block includes the steps of mixing dry adsorbent granules with solutions of the two binders, blow molding the mixture into a block, curing the resins with an alkaline gas, purging the block of the gas by passing air through the block, and heating the block to drive off the solvents for the binders. The invention also includes a refrigeration system utilizing the block.

REFERENCES:
patent: 3238056 (1966-03-01), Pall et al.
patent: 3538020 (1970-11-01), Heskett et al.
patent: 3851026 (1974-11-01), Heskett et al.

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