SU1175565A2 - Multistep cyclone - Google Patents

Abstract

1, MULTI-STAGE CYCLONE by auth., No. 654294, characterized in that, in order to increase the efficiency of the heat treatment process and reduce the flow of heat, the primary and downstream cyclones are equipped with hollow cones of reduced size towards the discharge openings installed with the possibility of axial displaced11 at a distance from the hull walls with large bases upwards, 2, Cyclone according to claim 1, 1, and with the fact that the cyclones of the primary winding are equipped with additional inlets with pneumopholes Wet materials connected to the upper parts of the cyclone bodies and heat transfer nozzles connected to the upper parts of the chambers, while all the inlets (heat exchanger I / O switches are installed in all of the inlets). filter material.

Description

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The invention relates to heat treatment of dispersed materials and can be used in the chemical, metallurgical, energy industry, in the production of mineral fertilizers and other branches of the national economy.

The purpose of the invention is to increase the efficiency of the heat treatment process and reduce the passage of dust.

The drawing shows a multi-stage cyclone, a general view.

The multistage cyclone contains a cyclone 1, in which chamber 2 is coaxially mounted with tangentially supplied pneumopulators 3 with nozzles 4. In the upper part of the cyclone

I installed piping 5 for the withdrawal of the spent coolant. Inside the cyclone 1, inverse chamber 6 is connected to chamber 2, interconnected with the possibility of axial movement. In the lower conical part of the cyclone there is a discharge opening 7 for draining the finished product. Pipeline 5 is connected to nozzles 8 and 9 of pneumatic feeders, over which feed hoppers 10 are installed, tangentially connected to chambers 11 and upper parts of cyclone bodies 12. In upper parts of chambers

II and buildings of cyclones 12 are mounted nozzles 13 and 14 output of the spent coolant. In front of the nozzles 8 and 9 and in the pipes 13 and 14, the switches 15 of the inlet and 16 of the outlet of the heat transfer medium are installed. Inside cyclones

12, return cones 17 are connected to chambers 11, interconnected with axial displacement and covered with filter material 18. Sluice feeders 19 and discharger 20 are installed in bins 10 and nozzle 7, through which the material being processed is loaded and unloaded. Bars 21 are provided for moving the cones.

Multistage cyclone operates as follows.

With the heat transfer input switches (15) in front of the nozzle 9 and outlet (16) of the treated air in the nozzle 13, the source material is closed through the feed hopper 10 and the sluice feeder 19 is directed to the pneumatic feeders with nozzles, from where it is jets of gas coming from the cyclone 1 through pipelines 5 are transported to chambers 11 and then to backward cones 17. In the flow of this heat transfer medium moving in a downward cyclone mode, a preliminary heat treatment of the product is carried out. In the case of ecm, the coolant in the reverse cones is separated from the solid particles gradually, since its consumption decreases in height in proportion to the annular areas between

cones. Centrifugal forces act on the material along the entire height of the cones in inverse proportion to their radius. A portion of the pulverized material that is carried out of the cones is captured by the filter material 18. From the cyclone chambers 11, the product continuously enters the pneumatic feeders 3, from where it is sent to the chamber 2, and then into the battery of the return cones.

where the final processing of the product takes place. From cyclone 1, the product is continuously discharged through opening 7 and discharger 20. During the heat treatment process, the filter material requires regeneration. For this, the switch 15 opens in front of the nozzles 9, shutting off the heat carrier inlet in front of the nozzles 8. At the same time, the switch 16 opens the coolant outlet in the pipe 13 and closes the output in the pipe 14.

When changing the direction of input, the coolant causes a layer of particles on the back of the filter material

and the captured product enters the pneumatic powder 3. When changing the input of the coolant, the source product is fed through the feed bins 10 and sluice feeders 19 to the pneumatic feeders with nozzles 9. In this case, the solid particles are processed in the coolant flow, which moves along the walls of the cyclones 12. For controlling the speed of movement

gas and particles along the height of the cone cyclones are interconnected with the possibility of axial movement, which is carried out using the rods 21. djJCfWHblU matter / f B / ra HiitJ matter / f, j.ffa. 3F- superior material

Claims (2)

1. MULTI-STAGE CYCLONE by auth. No. 654294, characterized in that, in order to increase the efficiency of the heat treatment process and reduce dust loss, the primary and subsequent treatment cyclones are equipped with hollow cones of successively decreasing size in the direction of the discharge holes installed with the possibility of axial movement at a distance from the walls of the housing with large bases up . 2. The cyclone according to claim 1, with the fact that the primary winding cyclones are equipped with additional inlet nozzles with moist material pneumatic feeders connected to the upper parts of the cyclone bodies and coolant outlet pipes connected to the upper § parts cameras, while in all inlet and outlet pipes there are installed coolant input-output switches, and the return cones are covered with filter material. SU, 1175565