SU906591A2 - Apparatus for suppressing dust outlet from industrial furnaces - Google Patents

Description

(54) DEVICE FOR ADDING DUSTING OF INDUSTRIAL FURNACES

one

This invention relates to dust collection and can be used, for example, in non-ferrous metallurgy.

According to the main author. St. No. 587969, a device for suppressing dust removal from industrial furnaces is known. The device is made in a vertical gas outlet neck of the furnace. In it, along the stream of gases, a corona electrode is suspended, perpendicular and concentric to which a diaphragm is installed at the junction of the gas outlet neck with the furnace. The diaphragm and gas outlet of the stoker neck are grounded and serve as a precipitation electrode 1.

However, this device provides a relatively low degree of purification of waste, their furnace gases (up to 70%) and requires additional external (installed outside the furnace) filters.

The purpose of the invention is to increase the efficiency of dust suppression and reduce capital and operating costs.

This goal is achieved by the fact that in a known device the gas outlet valve neck of the furnace is equipped with a perforated metal cylinder, made with a closed upper and open bottom1-1: 1M butt and installed inside the 1H) bottom edge of the diaphragm. In this case, the walls of the perforated metal center, li11dry, are provided with additional ones;

The drawing shows the proposed device, General view.

A corona electrode 2 is suspended in the gas outlet w, the neck 1 and the diaphragm 3 are mounted. Coaxially to the gas outlet neck, inside it there is a metal cylinder 4 with gas-permeable walls, with the lower end fixed on the diaphragm 3. The additional diaphragms 5 are installed in the cylinder.

The device works as follows.

Waste furnace gases enter the inside of the cylinder from the furnace. In the holes of the dia ({) ragm and the cavity of the cylinder, dust particles are charged with corona discharge ions and attracted to the grounded dia (|) waves and the walls of the cylinder and deposited on them. The purified gas passes through the walls of the cylinder in

Claims (2)

Claim 1. A device for suppressing dust removal from industrial furnaces according to ed. St. No. 587969, characterized in that, with the aim 5 to increase the efficiency of dust suppression and reduce capital and operating costs, the gas outlet neck of the furnace is equipped with a perforated metal cylinder, made with a closed upper and open lower end and installed ¹⁰ lower inside the neck with a lower end on the diaphragm. 2. Device by π. I, characterized in that, in order to lengthen the zone with a small 15 gas velocity and reduction of secondary entrainment of dust particles, perforated metal cylinder is equipped with additional diaphragms.