Apparatus for spray drying of liquid and paste-like materials

Details Apparatus for spray drying of liquid and paste-like materials Apparatus for spray drying of liquid and paste-like materials

1979-10-18

1981-05-05

Camby, John J.

Heating

With heating gas conveying, agitating, scattering or...

159 4R, 432 25, F27B 1500

Patent

active

042656176

ABSTRACT:
An apparatus for spray drying of liquid and paste-like materials comprises a chamber for combustion of a gaseous drying medium passing therein in a pulsating flow, which chamber has an inlet pipe for feeding therein the gaseous drying medium, coaxial with the chamber. Mounted into the chamber is a pipe for injecting the liquid or paste-like materials, a portion of the pipe being disposed on the centerline of said chamber in the direction of travel of the gaseous drying medium flow. An exhaust pipe is mounted in a coaxial relationship to said chamber at the end thereof opposite to the inlet pipe for feeding the gaseous drying medium. The apparatus has also at least one shroud (baffle) in the form of a truncated cone facing by its smaller base the interior of said chamber and positioned in a coaxial relationship thereto. The first shroud in the direction of travel of the atomized material flow is positioned directly in said exhaust pipe in a spaced relationship thereto to define a gap therebetween. In addition, the apparatus includes at least one toroidal resonator chamber encompassing said shroud, at least the first resonator chamber in the direction of travel of the material flow partly encompassing also the exhaust pipe and communicating therewith through the gap between the shroud and the same pipe. Each resonator chamber has a passage for withdrawing therefrom the unatomized material passing into the inner space through said gap from the exhaust pipe.

REFERENCES:
patent: 2441594 (1948-05-01), Ramseyer
patent: 2666632 (1954-01-01), Culver et al.
patent: 3618655 (1971-11-01), Lockwood
patent: 4183145 (1980-01-01), Piterskikh et al.

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