SU1334014A1 - Pneumatic and gas drier - Google Patents

Abstract

The invention can be used for drying bulk polydisperse materials. The purpose of the invention is to intensify the drying prodess. Parallel pneumatic tubes (PT) 2 and 3 of larger and smaller diameters are located in the following directions: PT 2 - in the lower rus, and PT 3 in the upper. Nozzle 5 of the input of the coolant in the PT 2 is connected to its lower part and is parallel to the tangential adapter 4, and the nozzle 6 of the material loading is connected to the adapter 4 coaxially with the PT 2. This reduces the hydraulic losses for pneumatic transport of the gas suspension in the bottom PT contributes to the orderly movement of material in it. The execution of the upper PT with a smaller diameter contributes to maintaining the speed of the material and the coolant along the entire length of the drying tract. 2 Il. with (L with with NU

Description

113

This invention relates to a technique for drying bulk polydisperse materials and may find application in various industries,

The aim of the invention is to intensify the drying process.

FIG. 1 shows the proposed pneumogas dryer-, FIG. 2 is a section A-A in FIG. one,

The dryer contains a pneumatic tube 1 consisting of a large 2 and small 3 diameters of a pneumotube, connected by an adapter 4, a tangential nozzle 5, axially nozzle 6, an outlet nozzle 7, a blade spreader 8, a hopper 9 with a screw feeder. The tangential nozzle 5 has an inclination angle, an equal angle of inclination of the adapter 4. The dryer works in the following manner. pneumatic tubes 2 large diameter. A drying agent is supplied to the material through the tangential nozzle 5. The largest kinetic energy has reached the lower part of the pneumatic tube 2 and is withdrawn from it through the nozzle 6. The core of the material returns to the upper part of the pneumatic tube and through the adapter 4 is directed to the upper pneumatic tube 3 of a smaller diameter, where its final drying takes place; Then, the gas mixture through pipe 7 is sent to the separation system (cyclones), where the dry material is separated from the dried sludge agent ceiling elements. Lowering the temperature of the dryer142

his agent as a result of drying the material causes a drop in its speed in the upper pneumatic tube, however, performing it with a smaller diameter helps to maintain the speed of the material and the coolant along the entire length of the drying tract.

The same installation angle of the adapter 4 and the tangential inlet 5 of the coolant inlet allows to avoid excessive hydraulic losses for the pneumatic transport of the material and, consequently, the cost of electricity. The constancy of the twist angle of the gas suspension in the lower pneumatic tube contributes to the orderly movement of the material in it, which has a positive effect not only on the intensity of drying, but also on the quality of the finished product.

Claims (1)

Invention Formula A pneumogas dryer containing parallel arranged pneumotubes of different diameters connected by an inclined tangential adapter, a loading unit for the material and auxiliary ducts for tangential introduction of a heat carrier into a pneumatic tube of a larger diameter, characterized in that pneumotubes of a larger diameter in the lower rus, the inlet pipe to the last heat carrier connected to its lower part and located parallel to that ngengschalnogo adapter, and the material loading unit is connected to the adapter coaxially with the pneumotube of the lower rus. VNIIPI Order 3952/39 Random polygons pr-tie, Uzhgorod, st. Project, 4 Circulation 635 Subscription