Method of maintaining adequate seed crystal in preferential prec

Details Method of maintaining adequate seed crystal in preferential prec Method of maintaining adequate seed crystal in preferential prec

1984-12-14

1986-10-21

Sever, Frank

Liquid purification or separation

Processes

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

210714, B01D 1300

Patent

active

046184295

ABSTRACT:
A method for ensuring an adequate amount of seed crystal in solution concentration systems employing preferential precipitation to control scaling and fouling over relatively low concentration factors. In systems concentrating solutions at concentration factors between 1 and 2, the method comprises determining the minimum amount of seed crystal necessary for the solution being concentrated at a concentration factor of about 10 or greater and introducing into the feeds solution a percentage of this amount according to the equation, % introduced=25.times.(C.F.).times.(C.F..sub.MAX /C.F..sub.MAX -1).

REFERENCES:
patent: 4207183 (1980-06-01), Herrigel

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