SU1191704A1 - Rotary drier - Google Patents

Abstract

ROTARY. DRYER, containing chamber of working and separation zones, rotors installed in the lower part of the working zone, and gas distribution box for introduction of heat carrier along the entire length of the chamber, at opposite ends of which are loading and unloading nozzles, which is designed to increase productivity and reduction of energy consumption, working and separation zones are separated by a longitudinal partition, and the box is installed in the upper part of the working area and connected to it by means of a grid with variable live section , In a decreasing direction, a discharge nozzle, wherein the coverage dos € additionally divided into sections by transverse bulkheads. (L co

Description

The invention relates to techniques for drying dispersed materials with forced mixing in a suspended layer and can be applied in various industries.

The aim of the invention is to increase productivity and reduce energy consumption.

Figure 1 shows a rotary dryer, a longitudinal section; in Fig.2 section aa in Fig.1. ·

The dryer contains a chamber 1, divided by a longitudinal partition 2 into a working 3 and a separation 4 zones, a rotor 5 with a drive 6, a loading 7 and an unloading 8 nozzles, a gas distribution box 9 with a grill 10 having a variable living section, and nozzles of the input 11 and output '1 2 coolant. The longitudinal partition 2 is installed relative to the wall of the housing with a gap 13 in which the shutter is located 14. The working area 3 is divided by transverse partitions 15 into sections.

The dryer operates as follows.

The source material through the loading pipe 7 enters the first section and, when rotated by the blades of the rotor 5, is thrown into the working area 3 of the chamber 1 in the form of a continuous row of fountains with a frequency corresponding to the rotation speed and the number of rows of rotor blades 5. The material is moved in the transverse section 1191704 in a circulating (oscillating) mode along a closed path. Hot gas (coolant) through the pipe 1 ^{1 of} the coolant inlet enters the gas distribution box 9 and then through the gas distribution grid (louvres) 10 into the working area 3 of the chamber 1. The gas distribution grid 10 is made with perforation, the opening area of which decreases in the direction of the discharge pipe 8 in proportion the amount of coolant supplied to each section, t <e. in accordance with the heat balance determined by the drying kinetics of the processed material.

The heat carrier with active mixing with the material, having given off heat, leaves through the gap 13 between the partition 2 of the 2nd wall of the housing into the separation zone 4. and is removed through the pipe 12 of the coolant outlet. The dried material is discharged through the discharge pipe 8.

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The dryer can also work according to the scheme with the lower coolant inlet. To do this, the coolant is introduced through the pipe 12, the separation zone 4 and the gap gap 13, and the coolant is withdrawn through the duct 9 and the pipe 11. Regulation and distribution of the coolant in the sections is effected by the shutters 14.

FIG. 2

VNIIIPI Order 7145/36

Circulation 651 Subscription

Branch of the RFP Patent ’*,

Uzhhorod, Project 4,

Claims (1)

ROTARY. A DRYER containing a chamber with a working and separation zones, rotors installed in the lower part of the working zone, and a gas distribution box for introducing coolant along the entire length of the chamber, at the opposite ends of which there are loading and unloading pipes, characterized in that, in order to increase productivity and to reduce energy consumption, the working and separation zones are separated by a longitudinal partition, and the box is installed in the upper part of the working zone and connected to it by means of a lattice with a variable living section, enshayuschimsya aside, the discharge nozzle, wherein the working area is further divided into sections by transverse bulkheads. | \ |