Method capable of adjusting heating uniformity of coke oven in length direction from lower portion and oven body structure

Abstract

The invention relates to a method capable of adjusting heating uniformity of a coke oven in a length direction from a lower portion and a novel oven body structure. The invention is characterized in that a grate brick capable of adjusting gas passing section area is arranged at the bottom of a top heat storage chamber of a small flue and the sizes of holes of the grate brick are adjusted by adding or subtracting adjusting bricks to or from the holes of the grate brick at a cellar. Each heat storage chamber is divided into a plurality of unit cells along the length direction; and each heat storage chamber is divided into multiple gas channels in the length direction. Coal gas and air are supplied from the same side of the small flue of the heat storage chamber; namely, the coal gas and the air are both supplied from a small flue at a coke side or a small flue at a machine side. The invention has the advantages that the problem of heating uniformity in the length direction of the coke oven is solved and the temperature of a flame path is more uniform and reasonable because the structure is reasonable and the grate brick capable of adjusting the gas passing section area is arranged at the bottom of the top heat storage chamber of the small flue; and the heat storage chamber which is in a cellular structure is more beneficial to distribution of gas quantity, avoids local high temperature caused by unreasonable distribution of the gas quantity and is capable of effectively increasing the product quality of the coke oven.

Description

technical field [0001] The invention relates to a novel furnace body structure of a down-spray coke oven and a method for adjusting the heating uniformity in the longitudinal direction of the coke oven from the lower part. Background technique [0002] In the prior art, the working process of the coke oven is: gas and air enter the small flue of the regenerator from both sides of the machine coke respectively, enter the regenerator through grate bricks, and the preheated gas and air enter the vertical flue combustion. In order to ensure the uniformity of heating in the long direction, adjusting bricks are often arranged at the bottom of the vertical fire channel and at the exit of the chute, and the distribution of gas entering different fire channels is adjusted by adjusting the cross-sectional area of ​​the opening. The burned exhaust gas enters the regenerator through another descending fire channel, enters the small flue through grate bricks, and discharges into the sid...

AI Technical Summary

Problems solved by technology

[0003] With the development of large-scale coke ovens, the distance from the top of the coke oven to the bottom of the flue is getting higher and higher. It is no longer possible to adjust the gas volume by placing adjustment bricks from the fire hole on the top of the furnace to the bottom of the flue. accomplish

The length of the coke oven is also getting longer and longer, and it is becoming more and more difficult to adjust the heating uniformity along the length

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