SU1545048A1 - Granulation dryer - Google Patents

Abstract

The invention can be used in the chemical, petrochemical industry, in particular in the production of granular mineral fertilizers, and allows for an increase in the quality of the drying and granulation process. The dryer-granulator contains a rotating drum 1, a loading chamber 2 with a nozzle 3 for spraying the initial solution and nozzles for introducing powdered material 4 and a heat transfer fluid 5, an unloading chamber 6 with outlet nozzles of the finished product 7 and a heat transfer fluid 8. On the inner surface of the drum 1 over the entire length lifting blades 9 are fixed, and the drum 1 itself is divided into zones of drying and separation by means of an annular partition 10 with windows. In this case, a reverse hollow screw 11 is placed in the drying zone to return the fines from the re-growing zone to the nozzle 3, and in the separation zone, the separating elements 12, made in the form of funnels with oblique chutes 13, are installed symmetrically relative to the longitudinal axis of the drum The upper edge on the side of the funnel of the adjacent row is equipped with a rotary plate 14. The deflecting rotary plates serve to balance the flows along the length of the classifier and to ensure its more stable operation. A straight hollow screw 15 is additionally installed in the separation zone to feed material from the drying zone to the separation, approximately in the middle part of the separation zone. Moreover, the loading sections of the reverse 11 and direct 15 screws are inserted through the windows of the annular partition 10, respectively

Description

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Compiled by S. Polnsky Editor A. Kozoriz Tehred M. Khodanych

Order 83

Circulation 590

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., T./5

Proofreader I. Muska

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Claims (1)

Claim A granulator dryer containing a rotating drum with a system of lifting blades mounted on its surface, a loading and unloading chamber, with a reverse hollow auger placed on the side of the loading chamber, a nozzle in the chamber itself, and separating elements on the side of the unloading chamber, characterized by in order to improve the quality of the drying process, the drum is additionally equipped with an annular partition with windows installed in front of the separating elements along the material with the formation of drying zones and separation, while in the last of the zones, a straight hollow screw is additionally placed, and the loading sections of the inverse and direct screws are introduced through the windows of the annular partition into the separation and drying zones, respectively. Editor A. Kozoriz Compiled by S. Polyansky Tehred M. Khodanich Corrector I. Muska Order 483 Circulation 590 Subscription VNIIIPI State Committee for Inventions and Discovery under the State Committee for Science and Technology 113035, Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and Publishing Plant Patent, Uzhhorod, st. Gagarina, 101