SU565689A1 - Apparatus for purifying high-temperature gases - Google Patents

Description

(54) CLEANING MACHINE

HIGH TEMPERATURE GASES

This invention relates to coke chemistry, in particular to the purification of gases from coke calcining furnaces.

A device for purifying hot gas is known, which comprises a chamber connected to a fan and installed above the screen; as well as a chamber located under the screen and connected to the pipe line for supplying the dust-laden gas. At the bottom of the device is equipped with a conveyor for returning the precipitated, dust and fines, falling through the holes of the screen sieve. The filter material is loaded from the hopper through the distribution cone to the grid. By changing the area of the outlet of the hopper, adjust the height of the filter.

Loading the filtering material from the hopper through the distribution cone leads to an increase in the content of the fine fraction, as a result of which the cleaning efficiency is reduced.

Due to use; screening device for this need filtering material of a certain kind, and a mechanical one)

Shaking creates an additional vacuum from the upper zone of the apparatus with waste gases.

The closest to the invented technical solution is a device for cleaning high-temperature furnace gases, KiSTC oe contains a housing lined with refractory / material, a movable coke filter, sector dosing units for periodic supply and removal of coke, a nozzle at the bottom of the water supply unit or steam for cooling coke.

The disadvantages of the known device are crushing when loading into the apparatus, filtering; material because of its low strength, which reduces the cleaning efficiency of: flue gases; temperature rise in

during preliminary afterburning from Z of the flowing gases with air in the chamber, it causes an increased gas emission from the filtering material of the upper zone and an increase in the removal of fine dust, which requires additional afterburning of gases emerging from the apparatus.

The aim of the invention is to increase the cleaning efficiency of high-temperature gases by adjusting the height of the filtering box and reducing the degree of mechanical grinding, of the filter material.

For this, in the apparatus for cleaning high-temperature gases, containing a housing lined with refractory material, gas supply and exhaust gases and a loading device for supplying a filtering material, the latter is in the form of an electrofusion pipe consisting of two movable with respect to other elements, the lower of which is provided with DBOYNYMA walls with openings made by vis

outer wall.

In addition, in order to evenly distribute gas around the perimeter of the apparatus, the gas feed duct is made in the form of an annular chamber, having a longitudinal section 20

truncated cone shape.

The drawing shows the proposed apparatus for cleaning high-temperature gases.

The apparatus includes a housing 1, a lining-25 refractory material 2, a movable coke filter 3, a loading device 4 with a hopper 5 and a nozzle 6 for supplying water, a discharging device 7, For supplying gas, the device is equipped with an annular gas-30 stroke 8, for removal of purified gas by pipeline 9.

Gas cleaning in the apparatus is carried out as follows.

From the bunker 5 it is pre-crushed coke, through the loading device 4 it continuously enters the casing 1 of the apparatus and is also continuously withdrawn through the lower discharge device 7, from where it goes to the filling furnace.40

 High-temperature gases (550–650 ° C) with a content of propellant furnace. Dust content 12 g / m and resin 1.2 g / m. by means of the annular gas duct 8, uniformly 5 are supplied throughout the entire cross section of the housing 1 in countercurrent to the moving coke filter. The gas, which passes through a layer of coke, clears dust and resinous compounds.

The height of the filtering layer 3 is adjusted, depending on the dust content of the gas, by moving up or down the loading device 4. The lower element of this device is movably fixed by a metal cable having a drive,

The lower element of the charging device has double walls between which the water coming in through the pipe 6 is heated and then sprayed through the slit holes in the outer wall of the lower element above the upper zone of the filter to trap gaseous tarry substances and coagulate the fine coke fraction 5. Purified gas ejected into the f atmosphere.

The annular gas flue of the gas gutter to prevent the filtrating material from clogging the holes for the gas eode has a truncated cone in the longitudinal section of the foriou

The design of the apparatus described above makes it possible to significantly increase the efficiency of purification of high-temperature gases emitted from rotary coke calcining furnaces, as well as to capture gaseous resinous waste.

Claims (2)

1. An apparatus for cleaning high-temperature gases containing a housing lined with refractory material, a loading device for supplying filtering material, gas supply and discharge ducts, characterized in that in order to increase the cleaning efficiency by adjusting the height of the filtering layer and reducing the degree of mechanical grinding of the filtering the material, the loading device is made in the form of a telescopic pipe consisting of two movable one relative to, the other elements, the lower of which is equipped with two GOVERNMENTAL walls with apertures formed in the outer wall. 2. The apparatus according to claim 1, wherein, in order to distribute the gas evenly around the perimeter of the apparatus, the gas feed duct is made in the form of an annular chamber having a truncated cone shape in longitudinal section.