METHOD FOR OPERATION OF ION EXCHANGER, AND ION EXCHANGER

WIPO Patent Application WO/2011/141953

A1

Provided is a method for the operation of an ion exchanger, which overcomes the problems of split-flow regeneration and can attain a higher yield. The method comprises a regeneration process that includes a first regeneration process and a second regeneration process conducted after the completion of the first regeneration process. In the first regeneration process, a regenerant (5) is distributed at the top (8) of an ion-exchange resin bed (2) and collected at the bottom (9) of the ion-exchange resin bed (2), whereby a downflow of the regenerant (5) is formed to regenerate the whole of the ion exchange resin bed (2). In the second regeneration process, a regenerant (5) is distributed at the bottom (10) of the ion-exchange resin bed (2) and collected in an intermediate zone (11) of the ion-exchange resin bed (2), whereby an upflow of the regenerant (5) is formed to regenerate part of the ion-exchange resin bed (2). The intermediate zone (11) wherein the regenerant (5) is collected in the second regeneration process is located at a depth of at least 100mm from the bottom (10) of the ion-exchange resin bed (2).

HIRAO MASAAKI (JP)
NAKAMURA SABURO (JP)
TESHIMA SHINICHIRO (JP)
ABE HAJIME (JP)
KAN ATSUSHI (JP)
HOSOKAWA HIROSHI (JP)

PCT/JP2010/003179

November 17, 2011

May 10, 2010

Click for automatic bibliography generation  

MIURA KOGYO KK (JP)
HIRAO MASAAKI (JP)
NAKAMURA SABURO (JP)
TESHIMA SHINICHIRO (JP)
ABE HAJIME (JP)
KAN ATSUSHI (JP)
HOSOKAWA HIROSHI (JP)

C02F1/42; B01J49/00

JP2003299968A	2003-10-21
JPS5584545A	1980-06-25
JP2004167417A	2004-06-17
JP2007260574A	2007-10-11

View/Download PDF      PDF Help

Previous Patent: EXHAUST PURIFICATION DEVICE AND INTERNAL COMBUSTION ENGINE

Next Patent: THIN FILM SEMICONDUCTOR DEVICE FOR DISPLAY DEVICE, AND METHOD FOR MANUFACTURING THE THIN FILM SEMICO...