SU1021901A1 - Apparatus for heat treatment of granular material in fluidized bed - Google Patents

Description

FIELD OF THE INVENTION The invention relates to a heat body ™ and can be used in the metallurgical, engineering, and chemical industries.

A device for thermal processing of granular materials in a fluidized bed, containing a separation chamber with a gas distribution device in the form of a gas distribution grid connected to the collector

The disadvantage of this device is the large energy consumption for the process.

Closest to the invention to the technical essence and the achieved result is a fluidized bed dryer containing a separation chamber with a gas distribution device in the form of combs connected in parallel to the collector with nozzles of the gaseous agent 2,

The disadvantage of the known dryer is that during deep heat treatment (heating, cooling) significant power consumption is required.

The aim of the invention is to reduce the energy consumption of the process.

This goal is achieved by the fact that in the apparatus for heat treatment of granular materials in a fluidized bed containing a separation chamber with a gas distribution device in the form of parallel combs connected to the collector with combs of gaseous agent supply, the collectors are fixed on opposite sides of the separation chamber, and the dies are arranged in steps moreover, above the latter, a stepped grating, mounted with the possibility of movement across its width and EShOlnenna as visors, acute angle directed upwards and connected by transverse plates disposed between the nozzles combs 35-75® angle thereto. .

And .. the collectors are interconnected by a duct made in the form of a prism.

FIG. 1 is a diagram of the separation chamber of the proposed device; in fig. 2 shows a section A in FIG. one; in fig. 3 - the relative position of the nozzles of the comb and plates in the separation chamber; in fig. 4 - the proposed device in the collection; in fig. 5 motion path of heat treated material.

A heat treatment apparatus for zerian materials in a fluidized bed is co-holding a separation chamber 1, the casing of which is made in the form of a rectangular section box with flanges 2 for mounting the chamber 1 in the apparatus.

A separation pipe 3 is mounted on the side of the separation chamber 1 for supplying the coolant to the chamber 1.

Inside the chamber 1 there are co-reflectors 4, which are interconnected by a gas duct 5, made in the form of a prism, a gas-distributing device, made in the form of combs connected to the collector 4 in steps. Combs are a system of parallel distribution pipes b with nozzles 7. Combs are located above the slope surface. tew 8 gas ducts 5 on the same distance from it. The angle of inclination of the upper plane of the flue duct 5 is 1560 to its base. A step grate placed above the combs is mounted with a possibility of movement across the width of chamber 1. and made in the form of peaks 9, directed with an acute angle upwards and connected by transverse plates 10 located between the nozzles 7 of the comb at an angle of 35-75 to them. In the pipes 7, the gas outlets 11 are made in the form of longitudinal slits. Kozfki 9 are provided with overflows 12 in the form of grooves in the upper part of the peaks. Overflows 12 in the adjacent peaks are arranged in a staggered order on opposite sides of chamber 1. On the loading and output side, in the separation chamber 1 there are retaining 14 and discharge

13 channels.

- ....-. -. When mounting the fluid bed apparatus, the discharge chamber 13 of the apparatus is fixed on the end 16 of the rotating drum. In the lower part of the apparatus, the shagruzka pipe 17 of the finished product is placed, in the upper part - the nozzle 18 of the discharge of the spent heat carrier and the cooling agent.

The machine works in the following way.

The hot material flows from the rotating drum into the discharge chamber 15, from where it enters the separation chamber 1, where it is cooled in a fluidized bed by the agent supplied through the nozzle 3 to the collectors 4 and the bottom prismatic flue 5. From the collector 4, the agent goes further to distribution pipes 6 combs and through the gas-emitting holes 11 of the pipes 7 into the separation chamber 1 for cooling the material. The cooling agent, the passage through the gas-supplying holes 11 of the nozzles 7, hits the plates 10, is fixed obliquely with respect to the nozzles 7 of the combs, forming together with the cooling material a boiling layer. The cooled material, poured down the steps of the dies through the overflows 12 in the peaks 9 p & kk, is cooled, and then goes to the discharge 13. When accumulated in the supporting

. Channel 14 large pieces of material: the latter are fed to a feeder (not shown). The unloading of the coolant and the loose material is carried out through the inlet 17. The waste heat (carrier and cooling agent / release agent) flows through the inlet 18.

Intensive vortex formation and - increase of the cooling path

material contribute to more efficient deep cooling of the material.

The proposed apparatus for the thermal treatment of granular materials in a fluidized bed in the form of a compact unit allows it to be installed in combination with a drum, layer and d | Ears dryers.

J 4 F & 2 fff

Claims (2)

1. APPARATUS FOR THERMAL TREATMENT OF GRAIN MATERIALS IN A BOILING LAYER, containing a separation chamber with a gas distribution device in the form of parallel-mounted combs with different agent supply nozzles, distinguishing * · with the fact that, in order to reduce energy consumption, the collectors are reinforced by . on the opposite sides of the separation chamber, and the combs are arranged in steps, and above the latter in the chamber there is an additional step grid installed with the possibility of movement along its width and made in the form of visors directed by an acute angle upwards and connected by transverse plates located between the nozzles of the combs at an angle of 35 75 ° to them. 2. The apparatus according to claim 1, characterized by the fact that the collectors are connected; yen among themselves by a flue made in the form of a prism. “SILENCE ^ra, 'ns ^No. \ 1Q21901