Process and device for fluidized bed spray granulation

Details Process and device for fluidized bed spray granulation Process and device for fluidized bed spray granulation

1991-06-12

1993-05-25

Straub, Gary P.

Plastic article or earthenware shaping or treating: apparatus

Tumbling type agglomerating means for particulate material

23313FB, 209147, 241 19, B22F 300, C05B 1900, C22B 114

Patent

active

052138208

ABSTRACT:
Granule production is based on particle growth in a fluidized bed (4), in which the liquid starting product is sprayed into the fluidized bed and the finished granular particle is discharged from the fluidized bed (4) with classification. The classification is carried out with the aid of a classifying air flow which is divided into individual single flows (6) to each of which is assigned a zigzag classifier module (7, 17) and a spray nozzle (5) or a group of spray nozzles. The course of the classifying process is such that the granular particles which are too small and have not yet reached the desired diameter are thrown back into the fluidized bed (4) by a return shaft (9, 18) seated on each of the zigzag classifier modules (7, 17) in parallel or radial zones without cross-mixing, in which the relatively small particles impinge at a relatively large distance from the return shaft (9, 18) and the large particles, which have already grown close to the discharge size, impinge at a relatively small distance. The process is carried out with the aid of a fluidized bed granulator, to the inlet plate (2) of which is connected a zigzag classifier, subdivided in a modular manner, in which each zigzag classifier module (7, 17) is provided with a return shaft (9, 18) at the point where it joins the inlet plate (2, 16). In addition, at least one spray nozzle (5) at the inlet plate (2, 16) is allocated to each zigzag classifier module (7, 17).

REFERENCES:
patent: 1401304 (1975-07-01), Kaspar et al.
patent: 2586818 (1952-02-01), Harms
patent: 3795504 (1924-03-01), Wengeler
patent: 3929628 (1975-12-01), Denevi et al.
patent: 4098464 (1978-07-01), Niedner et al.
patent: 4832700 (1989-05-01), Kasper et al.
patent: 4931174 (1990-06-01), Uhlemann et al.
patent: 4946653 (1990-08-01), Stopp et al.
patent: 4946654 (1990-08-01), Uhlemann et al.

Affiliated with

Also associated with

Rating

Process and device for fluidized bed spray granulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and device for fluidized bed spray granulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for fluidized bed spray granulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-896029