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

B - Operations, Transporting

01

D

252/12, 252/20,

B01D 29/00 (2006.01) B01D 39/00 (2006.01) B01D 39/16 (2006.01) B01J 20/28 (2006.01) F25B 43/00 (2006.01)

Patent

CA 1111014

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 absorbent 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.

318645

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