SU1310442A2 - Regenerative soaking pit - Google Patents

Abstract

The invention relates to the field of ferrous metallurgy and can be used to heat ingots before rolling. The purpose of the invention is to increase the productivity of the well by intensifying the mixing of gas with air and heat transfer. The well contains, on each side of the working chamber 1, the superregenerative space 2, the gas, the gas 3 and the air 4 regenerators, separated from each other by a dividing wall 5, along the length of which a channel 6 is made connecting the top 7 and bottom 8 of the gas nozzle of the gas regenerator 3. Opposite to the middle Rus 9 nozzles of the gas regenerator 3 in the dividing wall 5, the through inclined channels 10 with the total cross-sectional area of 0.3-0.5 live are oriented towards the upper English 7 of the gas regenerator nozzle 3 section of the nozzle of the air regenerator 4. 1 Il. from € (L SLE yu gh

Description

This invention relates to ferrous metallurgy, in particular to the heating of a metal before rolling.

The purpose of the invention is to increase the productivity of the well by intensifying the mixing of gas with air and heat transfer.

The drawing shows a regenerative heating well, a longitudinal section.

Regenerative heating well contains on each side of the working chamber 1 supergenerator product. After landing of the metal into the working chamber 1 through the gas 3 and air 4 the regenerators are served respectively. but gas and fan air. Gas and air flow is divided by

space 2, gas 3 and air 4 regenerators, separated from each other by 5 two parts, one of which passes by a dividing wall 5, along the entire length of the nozzle corresponding to which not the channel 6 is made, connecting the upper 7 and lower 8 Russa nozzles gas regenerator 3. bppo20

The gas regenerator nozzles 3 in the dividing wall 5 are extended, oriented towards the upper train 7 of the gas regenerator nozzle 3, through inclined channels 10 with an approximate cross-sectional area of 0.3-0.5 of the air cross-section of the air section of the regenerator 4. Corner the slope of the channels is 30-45.

The implementation of the inclined through channels in the separation wall in the area opposite the middle row of the nozzle allows to organize the supply of air into the channel and provide an adequate path for complete preliminary mixing with the gas entering the channel. Tilt angle ka25

thirty

regenerator, and the other branch into channel 6. In channel 6, a preliminary, before going out into the superregional space 2, gas mixing takes place, with air. The pre-mixed parts of gas and air from channel 6 enter the superregional space 2, where they meet with a part of gas and air from the nozzles of gas 3 and air 4 regenerators. A turbulent torch is formed, which transfers its heat to the heated metal in the chamber of the well 1. Combustion products are removed through the opposite pair of regenerators and the channel.

As a result of arranging a part of the gas with air in the pre-mix channel, more favorable conditions for fuel combustion are created. .

The length of the torch is shortened, the burning of ki is 30-45. With less fuel running out within the angle of inclination, a full 40 well measure is not provided. The amount of heat, by mixing gas with air, at a greater angle of inclination creates a hydraulic valve in the channel.

Channel area selected

The increase in the well chamber is increased. As a result, the temperature in the well is increased by 55-80 seconds, the time for the temperature to reach the control of the conditions for supplying such a 45 value is reduced by 15-30 minutes.

The capacity of the well is increased by. 1-2%, specific fuel consumption is reduced by 0.9-1.0 kg / ton.

the amount of air into the channel at which the organization of the preliminary mixing of gas with air reduces the length of the flame to the limits of the well chamber.

Claims (1)

When the channel area is less than 0.3 area of the living section of the air nozzle, the amount of air entering the channel is small, and the preliminary mixing of air with gas is not enough to organize the burning of fuel within the well chamber. When the cross-section of the channels is more than 0.5, the quantity Regenerative heating boiler. - Aut. St. No. 1177368, characterized in that, in order to increase the well performance 55 by intensifying gas mixing with air and heat transfer, in the dividing wall in the area opposite the middle row the nozzles are made the spirit passing through the channel is large and it is not fully mixed in the channel with gas, besides, the amount of air passing through the air regenerator sharply decreases, its temperature drops, and the length of the flame increases. Well works as follows. After landing metal in the working chamber 1 through the gas 3 and air 4 regenerators are served respectively. but gas and fan air. Gas and air flow is divided by two parts, one of which runs along the entire length of the nozzle corresponding two parts, one of which runs along the entire length of the nozzle corresponding regenerator, and the other branch into channel 6. In channel 6, a preliminary, before going out into the superregional space 2, gas mixing takes place, with air. The pre-mixed parts of gas and air from channel 6 enter the superregional space 2, where they meet with a part of gas and air from the nozzles of gas 3 and air 4 regenerators. A turbulent torch is formed, which transfers its heat to the heated metal in the chamber of the well 1. Combustion products are removed through the opposite pair of regenerators and the channel. As a result of arranging a part of the gas with air in the pre-mix channel, more favorable conditions for fuel combustion are created. . The increase in the well chamber is increased. As a result, the temperature in the well is increased by 55-80 s, the time for the temperature to reach the control50 Regenerative heating boiler. - Aut. St. No. 1177368, characterized in that, in order to increase the well performance 55 by intensifying gas mixing with air and heat transfer, in the dividing wall in the area opposite the middle row the nozzles are made 3. 13 104424 Oriented towards the top, the cross-sectional area of which consists of the nozzle of the gas regenerator 0.3-0.5 of the area of the living section of the gasket — through the inclined channels, the total of the air regenerator.