SU1245594A1 - Device for dust delivery from blast furnace dust collector - Google Patents

Description

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The invention relates to ferrous metallurgy, to the design of the discharge units of dust collectors of main furnaces, and can be used in other pressure vessels.

A device for moistening and imparting dust from a blast furnace dust collector is known, which is made in the form of an inclined pipe equipped with nozzles 1J.

Also known is a cross-section separator containing a dust relief pipe with nozzles for spraying water, in which the dust relief pipe at the location of the nozzles installation is made with a pinch 2.

A disadvantage of the known devices is the presence of large pie and gas emissions when discharging the dust collector due to incomplete wetting of the entire mass of dust.

The closest to the invention to the technical essence is a device for removing dust from a dust collector of a blast furnace, containing a dust exhaust pipe with a discharge tip and nozzles for introducing water into the dust stream.

The discharged material moves in a pipe under the pressure of flue gases in a dust collector, is moistened with water from the nozzles and unloaded through the discharge tip. The advantage of this construction is simplicity and

g 1 reliability 3.

A disadvantage of the known dust collector is that not all the dust manages to be wetted in the pipe and unwet dust particles of the JOTCH waving when unloading from the toe, causing environmental pollution, deterioration of working conditions, loss of recyclable blast furnace.

The aim of the invention is to improve the wetting of the flow of fluids and the reduction of fluid leakage when the dust collector is unloaded.

The goal is achieved by

that in the device for removing dust from the blast furnace dust collector containing a discharge pipe with a discharge toe and nozzles to enter into G4; s into the dust flow, the discharge toe is worn with a longitudinal partition with an opening at the arch of the toe, divided into two sections , while in the section, remote from the dust collector, additional nozzles are installed.

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The drawing schematically shows the proposed device.

The device comprises a tank 1 with a pick-up 2, with a dust valve 3, under which there is an inclined dust-discharge discharge pipe 4 with nozzles 5, ending with a discharge tip 6 with a roof 7.

The discharge sock 6 is divided by a longitudinal partition 8 with an opening 9 at the arch 7 of the sock 6 into the main section 10 and an additional section 11 in which the additional nozzles .12 are installed.

The device works in the following way.

When the dust collector is unloaded, the pressure under the top gas flows from the bag collector 2 of the tank 1 through the open valve 3 to the discharge pipe 4, where it is partially moistened with water from the nozzles 5 and discharged through the discharge tip 6 seconds. vault 7.

In the npay araeMOM device, the 4 pip moistened is unloaded, as heavier, after exiting the pipe 4 through the main section 10 of the discharge HOCBia 6, while the dust particles in the pipe 4 that are much lighter than the moistened pitch enter under the pressure of the gas flow through the opening 9, the partitions 8 into the additional section 11 of the sock 6, where they are moistened with water from the additional nozzles 12 and discharged from this section as a wetted mass. The placement of the opening 9 of the partition 8 at the arch 7 of the discharge nose 6 facilitates the entry of a dry, non-wetted drench into section 11, since the opening 9 is opposite the outlet of the pipe 4 to the tip 6, i.e. in the course of a stream. i

In the proposed device, a natural in the course of the material separation in the unloading sock of the discharge pipe of the moistened and non-wetted plush and wetting of the latter is ensured, which ensures a reduction in elevation of the discharge when unloading the gun. At the same time, the pollution of the atmosphere is reduced, the working conditions and safety precautions are improved, the losses of the recycled top furnace die are reduced, which is achieved while maintaining the structural simplicity and reliability in operation of the discharge chamber.

devices of the device and ensure the possibility of its use

almost the scale of the entire blast furnace production.

Editor N. Gunko

Compiled by B. Rakovsky

Tehred L.Oleynik Proofreader M.Demchik

Order 3961/17 Circulation 552Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Droizvodstvennoe-printing enterprise, Uzhgorod, st. Design, 4,

Claims (1)

DEVICE FOR DISCHARGE OF DUST FROM A DOMAIN FURNACE DUST CATCHER, containing a dust pipe with an unloading sock and nozzles for introducing water into the dust stream, heating it so that, in order to improve the wetting of the dust stream and to reduce dust emissions during unloading dust collector, unloading sand is equipped with a longitudinal partition dividing it into two sections, while additional sections are installed in a section remote from the dust collector; nozzles. U - »-. 1245594