SU94983A1 - Steel-making rectifying furnace regenerative - Google Patents

Description

The proposed steel-smelting direct-flow regenerative furnace is designed / dl for work on gaseous, liquid or dust-like fuel. It is more advanced than the known, similar furnaces, the pack as it boosts the increase in heat transfer from combustion products to charge materials and to molten metal and slag due to the improved process of burning fuel and directing the flame flow to the bath.

This is achieved by using in the furnace vertically directed to the bath burners and devices that shut off the corresponding channels in such a way that the combustion products are diverted from the working space to the regenerators located on both sides of the furnace, simultaneously through the channels switching alternately at the queue 1-gate sliding valves.

FIG. Figures 1 and 2 depict a steelmaking furnace projected in projections.

The furnace is equipped with burners /, installed vertically in the arch. Two spans 2 and 3 are located along the furnace above its arch for supplying gas and air to the burners (gas and air / air ducts). Gas and air supplied to regenerators 4 and 5 are fed to lollet 2 and 3 through vertical slots 6 and 7.

When the furnace is in operation, the PLVM from the burners 1 is directed vertically down to the surface of the melted materials and forms a horizontal flow directed from the burners to the furnace ends. There are windows 8 at the end of the c-hole, connecting vertically inclined channels 6 -; 7 with working space. 9 furnaces. Windows 8, as well as the inlet openings G030, and air ducts 2 and 3 are closed by gates 10.

The control of valves and slide valves of the throw-over system is prevented in such a way that the working space 9 is connected through the okpo 8 with the corresponding vertical-clone channel and the slide gate Yu closes the outlet from this channel to the gas or air supply pipe. With

No. 94983 2-connection of a 1-oz-il air duct with a vertical-nakloyi channel. The gate 10 disconnects this channel from the working space of the furnace.

The inclusion of individual gates produces but an unfocused-reverse heat circuit, i.e., when gas flows through the right channel 6, the combustion air is supplied through, 7, and the combustion products discharge through the right channel 7 and left channel 6 and heat left gas and right air regenerators.

At the next KjianaiHOB perekidka, gas is supplied to the left, air is to the right, and the combustion products heat the right gas and left air regenerators.

With this scheme of lexing of nlbers, the most uniform vanmas are provided over the entire mirror with a constant neneniyenii fak.shv and eliminated the possibility of}} the proportion of the gas with air and burning emulations in a vertical-slope channels Vertical directional torch , thanks to the h: the cosine of the angle of incidence of the thermal radiation | I am on the plane of yours ... it transmits with radiation much more heat than a horizontal torch parallel to the bath. In addition, with vertical transmission, the akela reach means much more tenofacon by convection than is possible in open-hearth furnaces. An important factor for increasing heat transfer is also the separation of burner functions and gas venting in the hot water tank, removal of flue gases from the furnace. This makes it possible to give the burners the shape that ensures the most complete combustion, the desired shape (zakel and use all the advantages of heating engineering during their construction).

The operation of valves and valves and poJuj in: the proposed furnace proceeds under conditions different from the operating conditions of the frames and dampers of the charging area. Therefore, their cooling system in ecutionation is more reliable than the cooling system of the caissons of gas spans of ordinary open-hearth furnaces.

Prevention Invention

A steel-making direct-flow (regenerative furnace for working on gaseous, liquid or pulverized fuels is necessary; and because of this, in order to increase the heat transfer from the products to the furnace materials to molten metal and u) lacquer. , it uses vertically directed to the burner bath in the roof and devices that block the corresponding channels in such a way that the products of combustion from p (working spaces to regenerators stand and on the other side of the furnace are diverted in both directions 0 (simultaneously toggle schies noperemenno nipn regular perekidkah valves and dampers.

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