Two stage continuous crystallization apparatus with controls

Details Two stage continuous crystallization apparatus with controls Two stage continuous crystallization apparatus with controls

1976-01-19

1977-11-01

Emery, Stephen J.

Chemistry: physical processes

Physical processes

Crystallization

23301, 23295R, 127 16, 127 60, 159 17P, 159 44, B01D 902

Patent

active

040563642

ABSTRACT:
A crystallizable solute is crystallized from a solution containing the same by introducing a solution of said solute into a first stage evaporative-crystallization zone together with seed solute crystals. Within the first stage evaporative-crystallization zone the solution is concentrated to yield a saturated first stage concentrate containing crystals of said solute. The crystals of said solute are substantially larger than said seed crystals and are suspended in a solution more concentrated with respect to said solute than the solution supplied to said first evaporative-crystallizaton zone. A stream of said first concentrate is removed from said first evaporative-crystallizaton zone and transferred to a second evaporative-crystallization zone for further concentration or crystallization of solute and for the production of solute crystals of increased size. There is continuously recovered from the second evaporative-crystallization zone a slurry having a total solute or solids content of about 86-94% by weight and containing the solute crystals of desired crystal size.

REFERENCES:
patent: 2377363 (1945-06-01), Noble
patent: 3220883 (1965-11-01), Howard
patent: 3261670 (1966-07-01), Chirico
patent: 3530924 (1970-09-01), Domning
patent: 3595624 (1971-07-01), Bradfield
patent: 3622387 (1971-11-01), Grandadam
patent: 3680621 (1972-08-01), Giorgi
patent: 3725127 (1973-04-01), Retali
patent: 3899386 (1975-08-01), Komiyama
patent: 3900292 (1975-08-01), Fairchild
Garrett, Industrial and Engineering Chemistry, vol. 53, No. 8, Aug. 1961, pp. 623-628.

Affiliated with

Also associated with

Rating

Two stage continuous crystallization apparatus with controls does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two stage continuous crystallization apparatus with controls, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two stage continuous crystallization apparatus with controls will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-5661