SU1208442A1 - Regenerator of open-hearth furnace - Google Patents

Description

one

The invention relates to ferrous metallurgy, in particular to the design of regenerators of open-hearth furnaces.

The purpose of the invention is to increase the service life of the regenerator and increase the manufacturer of the furnace.

On Lig.1 depicts the regenerator of the open-hearth furnace; figure 2 - cut A-L in figure 1.

The regenerator consists of chambers 1, not filled with refractory bricks, the Chamber with nozzle 2, made with the possibility of horizontal and vertical passage of gases through it and having a supra-suction 3 and a sub-4 space. The bypass chamber 1 and the nozzle 2 are separated by a wall 5 in which windows 6 are made. The camera 1 and the sub-nozzle 4 form a communicating path with the flue 8. The shut-off device 7 can overlap the bypass chamber 1 and the super-nozzle 3 from each other during operation at the moment when the top of the nozzle 2 of the open-hearth furnace is overheated or deposited by melting dust.

When the flow area of all windows is 0.3-0.4 times the nozzle section, the aerodynamic resistance of the flue gases is minimal and the heat exchange between the flue gases and the refractory masonry of the regenerative nozzle is improved.

The location of the windows below the level of the top of the nozzle is 0.2-0.3 of the height of the nozzle due to the fact that during operation

1208442, .2

the regenerator of the open-hearth furnace to this height the upper rows of the nozzle are completely brought in by melting dust and the windows are above this level

5 impractical.

The open-hearth furnace regenerator works as follows.

The flue gases coming from the furnace pass through the supernatant

10, space 3 and nozzle 2, and, having given up some of their heat, are diverted to burs 8 through the sub-attachment space} iCTBO 4.

After reversing the torch into

15, the nozzle 2 through the flue bore 8 and the sub-nozzle space 4 enters the cold air, is heated therein and through the nozzle air 3 is sent to the working air.

20 space furnace. In the case of overheating or skidding of the top of the nozzle 2, the shut-off device 7 covers the supra-packing space 3 and the flue gases through the chamber 1 and the windows 6

25 enter the nozzle 2 (the lower part of the nozzle is working at the same time), the sub-nozzle space 4 and the cold air discharges into the hog 8. When the direction of the flare changes

30 is fed into the working space of the furnace through the sub-nozzle space 4, the nozzle 2 (where it is heated to the desired temperature) and through the windows 6 and the bypass chamber 1 enters the

,, workspace.

With this design of the regenerator of the open-hearth furnace, the nozzle runs continuously and longer, which allows to increase

Q resistance of nozzles for 50 heats, furnace capacity for 400 tons.

P

L.

Editor M. Dylyn

Compiled by L. Sharapova

Tehred O. Vashchishin Proofreader M. Pojo

Order 243/52 Circulation 561 Subscription

VNIIPI USSR State Committee

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

Filial ShSh Patent, g, Uzhgorod, st. Project, 4

Edo

.2

Claims (1)

A MARTEN FOAM REGENERATOR, comprising a regenerative nozzle, a bypass chamber connected to the flue bore through the nozzle space, a separation wall located between the bypass chamber and the regenerative nozzle, and a shut-off device, characterized in that, in order to increase the life of the regenerator and increase the productivity of the furnace, windows are located in the dividing wall, located below the nozzle top level by 0.2-0.3 nozzle heights, and the total passage area of the windows is 0.3-0.4 passage area nozzle-stand section. & ut.f