Cover for barrel roasting heat exchanging

Abstract

The invention discloses a cover for barrel roasting heat exchanging. A center hole is formed in the middle of the cover arch of the cover and is communicated with a flame path (23). The center hole is connected with a vertical flow guiding cylinder (2). Fuel gas heat exchanging pipelines (4) and hot air pipes (5) are arranged in the flow guiding cylinder (2). The heat exchanging pipelines (4) and the hot air pipes (5) are arrayed in a distributing mode to form a heat exchanging longitudinal pipe group. The number of the pipelines (4) and the number of the air pipes (5) of the heat exchanging longitudinal pipe group are the same. The lower portion of the heat exchanging longitudinal pipe group is communicated with the horizontal sections of the pipelines (4) and the air pipes (5) in the flame path (23). The horizontal section pipelines (4) and the air pipes (5) are arrayed in the flame path (23) in a radiation mode. Fluid of each pipeline (4) and each air pipe (5) in the flame path (23) is communicated with the same combustion chamber (9). Flames and smoke can go to an upper cavity through a gasification pipe (29). The upper cavity is communicated with a tail gas outlet (1). A gasification section is provided with a water replenishing opening (11). A steam outlet (6) is formed above the water replenishing opening (11), so that steam is discharged.

Description

technical field [0001] The invention relates to metallurgical baking of liquid metal ladles, in particular to the baking of steel ladles and ladles for casting and continuous billet casting. Background technique [0002] At present, the purpose of baking steel or iron barrels in the foundry and iron and steel industries is to make the refractory lining lose water molecules, and prevent the hydration crystals from suddenly decomposing water molecules when containing molten steel or iron. The water molecules mix and deflagrate, blowing up the refractory layer and pushing molten steel or iron to splash out of the tank. [0003] It is well known that refractory materials are better thermal resistance materials, and their thermal resistance characteristics restrict the heat transfer rate, so they cannot heat up quickly! The dynamic heat energy of baking and combustion only flows through the surface of the refractory material, and most of the combustion heat energy can only be lo...

AI Technical Summary

Problems solved by technology

[0004] The existing baking equipment used in the iron and steel industry also has the problem that the high-temperature part of the downward flame flow of the combustion device and the return flue gas flow are opposite to each other, and there is an airflow pad at the bottom of the barrel. The strength of the airflow pad The size is proportional to the high temperature part of the flame flow down the combustion device

To sum up, most of the heat energy of barrel baking and burning can not be fully utilized by the barrel body

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