Condensate polishing system incorporating a membrane filter

Details Condensate polishing system incorporating a membrane filter Condensate polishing system incorporating a membrane filter

1991-02-07

1992-06-30

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210652, 210746, 21050023, B01D 6104

Patent

active

051260522

ABSTRACT:
A method and apparatus for polishing a condensate is provided wherein the condensate contains both suspended and colloidally dispersed solid impurities, and also intermittent and variable levels of ionic impurities and dissolved silica. When the ionic impurities exceed a preselected level, a finely divided ion exchange resin mixture is first admixed with the condensate at a rate sufficient to reduce the level of such impurities to a preselected level within a preselected contact time period. Thereafter, the resulting condensate is passed through a membrane filtration device to remove such suspended and dispersed solid impurities. A simple, effective and reliable retrofittable apparatus adapted for use with BWR's fitted with precoat filter systems is provided.

REFERENCES:
patent: 4200695 (1980-04-01), Chong et al.
patent: 4276177 (1981-06-01), Smith
patent: 4775471 (1988-10-01), Nagai et al.
patent: 4830757 (1989-05-01), Lynch et al.
patent: 5039416 (1991-08-01), Loew et al.
Publication--Metal Ion Scavenging From Water With Fine Mesh Ion Exchangers and Microporous Membranes from Env. Progress, vol. 8, No. 1, Feb. 1989.
Publication--Operational Experience of Hollow Fiber Filter for Condensate of BWR.
Publication--Hollow Fiber Membrane Filter.
Brochure--BIOCRYL Bioprocessing Aids May 1987.
Toshiba Literature--Nuclear Power Plant Hollow Fiber Filter.

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