RU2335547C2 - Dust arrester - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: dust arrester contains cylinder cone case with sleeve for inflow of dust gas mixture made with diffuser out of non-ferromagnetic material and with sleeves for gas exhaust and dust discharge, electro magnetic system of dust arresting with magnetoconductors, cell core and support ribs. In the cylinder cone case of the dust arrester there is an access hole through which a gas gate and a dust directing cone are installed. The gas gate is made in form of a pipe with flanges attached to the upper cylinder cone end of the case and support cone with flanges, secured to the cylinder of the arrester case. The dust directing cone is attached to the support cone. Electromagnetic system of dust arresting with magnetoconductors, the cell core and support ribs are arranged on the cylinder with flanges on a stand and, when assembled, it is installed between the flanges of the pipe and the support cone.

EFFECT: decreased dimensions of dust cleaning equipment and simplification of assembly and installation on modernised dust arresters of blast furnaces.

2 dwg

Description

The invention relates to ferrous metallurgy, namely to the purification of blast furnace top gas.

A known dust collector for dry cleaning in the form of a vertical tank with conical ends, nozzles for the intake of a dust-gas mixture, a gas outlet for fine cleaning and dust discharge (1). The dust deposition efficiency in this dust collector is 50-80%, which is its significant drawback.

The closest in technical essence to the present invention is a dust collector comprising a cylindrical conical housing with nozzles for receiving a dust-gas mixture, removing purified gas and dust, an electromagnetic dust collection system, a cellular core made of ferromagnetic material, thrust ribs for mounting an electromagnetic system, a cellular core and fixing their position in space, the pipe for the intake of the dust and gas mixture is made with a diffuser of non-ferromagnetic material, the lower part of orogo located at the bottom of the magnetic cores and the honeycomb core (2).

The disadvantage of this dust collector is the complexity of the manufacture, installation and operation of a large electromagnetic dust collection system with magnetic circuits, a mesh core, thrust ribs and a diffuser on the dust collectors of modern powerful blast furnaces.

The technical task of the invention is to reduce the size of the equipment, combining it in a dust collection unit mounted on a separate stand, simplifying its installation on a dust collector and replacing it for repair.

This goal is achieved by the fact that on a separate stand, a dust collection unit is mounted as part of a cylinder with flanges, an electromagnetic system mounted on it with magnetic circuits, thrust ribs and a cellular core of ferromagnetic material. An assembly window is made in the cylinder-conical housing through which the upper end with the flange and the lower support cone with the flange are mounted, attached to the dust collector body.

The dust collection unit assembled between the flanges of the upper end and the lower support cone also acts as a gas shutter.

The proposed device is shown in figures 1 and 2 and consists of a cylinder-conical housing 2 with nozzles 1, 8, 9 with a mounting window 4, an upper end 3 with a flange, a lower supporting cone 5 with a flange to which a dust guide cone 6 is attached. Through the mounting a window 4 installs a power supply 7, which is shown in FIG. 2 and includes a cylinder 10 with flanges, an electromagnetic system 11 with magnetic circuits 12 and 13, thrust ribs 14, a mesh core 15 and a pipe 1 with a diffuser.

The proposed device operates as follows.

The dust-gas mixture enters through the nozzle 1 with a diffuser to the dust collector and is sent to the gap between the honeycomb core 15, the magnetic circuit 13 and cylinder 10. The dust is deposited as a result of a decrease in speed in the dust collector, a change in the direction of the gas flow and dust deposition by the electromagnetic system 11. The purified gas exits through the nozzle purified gas 8. The trapped dust accumulates in the lower conical end and is periodically discharged through the pipe 9.

The use of the invention will allow the assembly of part of the equipment at the stand and simplify installation work on the dust collector.

Information sources

1. Directory of "blast furnace production", ed. I.P. Bardina. Moscow, 1963, volume 2, p. 218.

2. Patent RU 2271869 C2.20.03.06.

Claims (1)

A dust collector comprising a cylindrical conical housing with a nozzle for the intake of a dust and gas mixture, made with a diffuser made of non-ferromagnetic material, and with nozzles for discharging gas and dust, an electromagnetic dust collection system with magnetic circuits, a mesh core, persistent ribs, characterized in that in a cylindrical conical dust collector a mounting window is made through which a gas shutter and a dust guiding cone are installed, and the gas shutter is made in the form of a pipe with flanges attached to a an additional cylinder-conical end face of the housing, and a support cone with flanges attached to the cylinder of the dust collector body, and the dust guide cone is attached to the support cone, while an electromagnetic dust collection system with magnetic circuits, a honeycomb core and thrust ribs mounted on a cylinder with flanges is mounted on a stand in assembly mounted between pipe flanges and support cone.

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