公开(公告)号：US3598241A

公开(公告)日：1971-08-10

申请号：US3598241D

申请日：1968-08-22

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： VONDRACEK CHARLES H ,  CALDERWOOD ANDREW S

IPC: C08J9/32 ,  B01D20060101 ,  B01D61/08 ,  B01D69/04 ,  B01D69/10 ,  B01D13/00

CPC classification number: B01D69/10

Abstract: An open pore tube for use with reverse osmosis water purification membranes is made of bonded resin coated filler particles.

公开(公告)号：US3610418A

公开(公告)日：1971-10-05

申请号：US3610418D

申请日：1969-09-05

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： CALDERWOOD ANDREW S

IPC: B01D20060101 ,  B01D63/06 ,  B01D31/00

CPC classification number: B01D61/08 ,  B01D63/061 ,  B01D63/065 ,  B01D2313/14

Abstract: A reverse osmosis apparatus, comprising an open pore module of bonded, resin-coated filler particles having sealed, nonporous terminal ends and a plurality of spaced feed bores, lined with semipermeable membranes and connected for series flow by means of attached end plates, is made by coating granular filler particles with a resin solution, pouring the resulting composition into a mold of suitable configuration, curing the resin, removing the mold to provide a module having terminal ends and a plurality of spaced-apart bores therethrough, impregnating the terminal ends of the module and the terminal ends of the bores with a liquidimpermeable polymeric sealing composition having a postgellation shrinkage of less than 4 percent, curing the sealing composition, inserting semipermeable membranes into the bores, sealing the membranes into the bores by suitable sealing means and attaching end plates to provide for series connection of the bores.

公开(公告)号：US3658955A

公开(公告)日：1972-04-25

申请号：US3658955D

申请日：1970-04-15

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： CHAMBERLIN RICHARD M ,  EMSWILLER JAMES L ,  CALDERWOOD ANDREW S ,  STANA REGIS R

IPC: B01D20060101 ,  B01D69/10 ,  B29C41/04 ,  B29C63/34 ,  B29D20060101 ,  B29D7/00 ,  B29D23/00 ,  C08L1/00 ,  B29C13/00 ,  B29D27/04

CPC classification number: B01D69/04 ,  B01D67/0013 ,  B01D69/10 ,  B01D71/16 ,  B01D71/22 ,  B01D2323/16 ,  B01D2323/42

Abstract: A UNITARY, TUBLAR REVERSE OSMOSIS MEMBRANE IS MADE BY PLACING A VISCOUS CASTING SOLUTION CONTAINING A CELLULOSIC FILM FORMING MATERIAL, A SOLVENT, AND A LEACHABLE SWELLING AGENT INTO A HOLLOW TUBE, PLACING A CASTING BOB HAVING A CIRCULAR CROSS SECTION AT ITS WIDEST POINT INTO ONE END OF THE TUBE, PUSHING THE CASTING BOB THROUGH THE CASTING SOLUTION WITH A GAS UNDER PRESSURE TO FORM A CONTINUOUS FILM OF CASTING SOLUTION ON THE INSIDE OF THE HOLLOW TUBE, EXPOSING THE FILM TO AIR, AND CONTACTING THE

FILM WITH A LEACHING LIQUID TO FORM A REVERSE OSMOSIS MEMBRANE.

公开(公告)号：US3657402A

公开(公告)日：1972-04-18

申请号：US3657402D

申请日：1970-04-15

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： STANA REGIS R ,  CALDERWOOD ANDREW S

IPC: B01D20060101 ,  B01D69/10 ,  B29C41/04 ,  B29C63/34 ,  B29D20060101 ,  B29D7/00 ,  B29D23/00 ,  C08L1/00 ,  B29D23/08 ,  B29D7/04 ,  C08B29/10

CPC classification number: B01D69/04 ,  B01D67/0013 ,  B01D69/10 ,  B01D71/16 ,  B01D71/22 ,  B01D2323/16 ,  B01D2323/42

Abstract: AN OPEN PORE MODULE, OF BONDED RESIN COATED FILLER PARTICLES, HAVING A PLURALITY OF SPACED BORES THERTHROUGH CONTAINING REVERSE OSMOSIS, MEMBRANES, IS MADE BY (1) PLACING THE MODULE IN A STATIONARY VERTICAL POSITION, (2) PLACING A VISCOUS CASTING SOLUTION CONTAINING POLYMERIC FILM FORMING MATERIAL, A SOLVENT AND A LEACHABLE SWELLING AGENT INTO EACH OF THE BORES, (3) GRAVITY DROPPING A CASTING BOB, HAVING A CIRCULAR CROSS-SECTION A ITS WIDEST POINT WITH AN OUTSIDE DIAMETER BETWEEN 0.02 AND 0.12 INCH LESS THAN THE INSIDE DIAMETER OF THE MODULE BORES, AT A SPEED LESS THAN 1 INCH/SEC. DOWN THROUGH EACH BORE TO FORM A CONTINUOUS FILM OF CASTING SOLUTION ON THE INSIDE OF EACH BORE, (4) EXPOSING THE FILM TO AIR AND THEN (5) CONTACTING THE FILM WITH A LEACHING LIQUID TO FORM A REVERSE OSMOSIS MEMBRANE ON THE INSIDE OF EACH MODULE BORE.