SU446722A1 - Installation for drying granular materials - Google Patents

Description

Installations for the drying of granular materials are known, for example, sledges containing two one-above-one and sequentially connected fixed heated drums with conveying rotors.

The proposed installation allows to improve the quality of drying and reduce the ash content of the material being dried. This is achieved by the fact that under the bottom of the upper drum and over the TpaHqnoptiing rotors of both drums there are panels of gasless flameless infrared radiation burners and a nozzle for supplying air to dilute the products of gas combustion, and the burner panel of the lower drum is separated from the transporting rotor by a flat screen.

The conveying rotors of the drums are made in the form of augers with rippers.

On figl depicted describing the installation, longitudinal section; figure 2 is a section along aa in figure 1; on fig.z - transporting the rotor of the upper drum; figure 4 - the same, the lower drum.

The installation comprises a hopper I, a faceting torus 2, a loading nozzle 3, an upper drum 4 with a transporting rotor 5 placed in it, a panel 6 of gasless flameless mount infrared radiation, a connecting nozzle 7, a lower drum B with a transporting rotor 9 placed in it, and a FLAT screen 10 , discharge pipe II and container 12, gas supply manifold 15, pipes 14 and 15 with air slides, heat insulating casing 16. cyclone 17, filter 18 and exhaust fan 19. Transport rotors 5 and 9 have rippers 20 and 21, respectively. Rippers 20 made in the form of a segment

a narrow spiral with reverse stroke, and rippers 21 - B form buckets.

The dried material, for example, soot, from the hopper I through the granulator 2 and the loading nozzle 3 enters the upper drum 4 and moves inside the latter by means of a transport rotor 5. Through the connecting nozzle 7 soot enters the lower drum 8, the transporting rotor 9 moves in the direction of unloading pipe II and through the latter is discharged to discharge container 12.

The teal is supplied to the material to be dried by radiation convective and contact methods. Radiation heating is carried out with the help of gas atomized flameless infrared burners, into which gas enters through manifolds 13. Gas combustion products are diluted with air coming in through pipes 14 and 15 with gates, and are used as heat carrier 7; 1 of convective drying. The spent coolant enters the cyclo: 17 and (18), and then exhauster 19 is emitted into the atmosphere.,

In order to protect the material being dried in the drum 8 from the direct radiation of the panel 6 of gas burners, a flat screen 10 serves.

SUBJECT OF INVENTION

Claims (2)

1. Installation for drying granulated materials, such as carbon black, supporting two stationary heated drums arranged one above the other and connected in series with transporting rotors, characterized in that, in order to improve the quality of drying and reduce entrainment, under the top of the upper drum and above transporting rotors Both drums are equipped with panels of flameless gas burners of infrared radiation and air inlets to dilute the combustion products of the gas, and a panel of burners of the lower bar The ban is separated from the transport rotor by a flat screen. 2. The installation according to claim 1, wherein the transporting rotors are made in the form of augers with rippers. PC A I r Figure 1 Figure 2 Fig.Z