Drying and gas or vapor contact with solids – Apparatus – With apparatus using centrifugal force
Patent
1978-12-18
1980-02-12
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
With apparatus using centrifugal force
34 57A, 159 4A, 432 58, F26B 1710
Patent
active
041876172
ABSTRACT:
The improved spray dryer of the present invention is designed to be utilized to transform a liquid feed solution into a dry powder. The spray dryer comprises: an air supply fan which supplies the continuous flow of air required for drying at a relatively high velocity; an air heater which heats the flow of drying air to a desired, relatively high temperature; a drying chamber which receives dispersed, small droplets of the feed solution and wherein the droplets are transformed into dry particles; a novel air distribution system that directs the flow of drying air into the drying chamber so that air flowing into the drying chamber has relatively uniform temperature and velocity profiles; an atomizing system which forms and introduces the dispersed droplets of feed solution in the flow of drying air; and a powder recovery system which collects the particles dried in the drying chamber and which removes the air from the spray dryer. The novel air distribution system includes: sloped transition ducting interconnecting the air supply fan and the air distribution system; a pre-profile plate upstream of the air heater; a profile plate to prevent large quantities of drying air from bypassing the heater; a diffuser; a compression device, although in some disclosed embodiments, the diffuser constitutes a part of this device; a downstream drying air distributor; nozzle taper structure for the nozzle portion of the atomizing system; and an internal air gap cooling system.
REFERENCES:
patent: 3731393 (1973-05-01), Okada et al.
patent: 4020564 (1977-05-01), Bayliss
Becker, Jr. James J.
Beresford Henry T.
LandOfFree
Spray dryer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spray dryer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spray dryer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1848589