SU401880A1 - DEVICE FOR DISCHARGING Flue GAS - Google Patents

Description

one

A device for removing flue gases from the working space of an electric steel-making furnace through an opening of the working window contains a gas outlet pipe mounted on the front wall of the furnace, which is at one end integrated into the upper part of the working window protrusion and telescopic.

The known devices require pre-separation from the gas stream of large dust particles, otherwise they fall out in the main gas duct, the cleaning of which is very difficult.

The aim of the invention is to pretreat flue gases of electric furnaces by separating coarse dust, by burning off carbon monoxide and by partially cooling the gases.

For this, the gas outlet pipe is provided with a chamber installed between the upper part of the protrusion of the working window and the hinge-telescopic joint of the gas duct, while the upper part of the chamber is made with water-cooled walls, between which a louvered separator is freely installed on the supporting corners.

FIG. 1 shows the described device with a gas pre-treatment chamber, general view; in fig. 2 - the camera.

front view; in fig. 3 is a view along arrow A in FIG. 2

The device contains a gas outlet pipe 1 mounted on the front wall.

furnace 2, which at one end is built into the upper part of the protrusion of the working window 3, and the other is connected to the gas duct by a hinge-telescopic connection 4. Between the upper part of the protrusion of the working window 3 and the joint-telescopic 4 of the duct there is a chamber 5, the upper part of which is made with water-cooled walls 6, provided with support angles 7, on which the louvered separator 8 is freely mounted.

The gases coming from the working window 3 through the gas outlet pipe 1 enter the chamber 5, in which, hitting the corners of the louvered separator 8, the dust particles lose their

speed and fall out of the gas stream into the lower part of the chamber, from where they are periodically removed.

Hot kiln gas, freed from coarse dust, bends around the plates of the separator 8, intensively heating them. In contact with hot plates, unburned carbon monoxide is burned. Pass louvered separator 8 and in contact with water cooled chamber walls

5, the gases are partially cooled, after which they exit from the chamber o, and through the flue with the hinge-telescopic joint 4, the main flue 9 and the corresponding purification devices are emitted into the atmosphere.

Subject and s obrett .o n

A device for removal of flue gases from the working space of an electric steel-smelting furnace through an opening of the working window, containing a gas outlet pipe, rigidly embedded at the top of the working window ledge with one end and with a telescopic connection to the gas duct, characterized in that pretreatment of flue gases by separating the notified in gas

coredispersing dust, afterburning of carbon monoxide and partial cooling of gases, it is equipped with a camera installed between the upper part of the protrusion of the working window and the hinge-telescolic connection of the flue,

at the same time, the upper part of the chamber is made with water-cooled walls, between which a louvered separator is freely installed on the supporting corners.

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