The converter flue is an important part of the converter OG system. When the oxygen converter is blown, a large amount of high-temperature flue gas (above 1450 °C) containing CO and iron oxide soot is generated, and the converter smelting is performed periodically, the heat load is increased during the blowing, and the wall temperature is increased; When the blowing heat load is reduced, the tube wall temperature is lowered, and the state is in a state of periodic thermal alternating stress, which is highly likely to cause high temperature oxidation corrosion, erosion wear and fatigue damage of the hood wall. Because the water pipe of the hood pipe needs to be cooled after the water wall leaks, it not only affects the production order, but also causes a large amount of water leakage into the furnace, which is easy to cause an explosion.
Technical realization elements:
The embodiment of the present invention solves the problem of high temperature oxidation corrosion, erosion wear and fatigue damage of the hood pipe wall due to the periodic thermal alternating stress state in the prior art by providing a converter flue and a protection device thereof. Technical problems have achieved the technical effect of ensuring production order and safe production.
The embodiment of the present invention provides a converter flue comprising: a converter flue body and a protection device; wherein
The converter flue body includes: a skirt, a movable hood, a slanted hood, a vertical hood, a turning hood, and a tail hood; the movable hood is disposed in the skirt; the inclined hood The first end is connected to the movable hood, the second end of the oblique hood is connected to the first end of the vertical hood; the oblique hood has an oxygen lance; the second end of the vertical hood Communicating with the first end of the turning hood; the second end of the turning hood is in communication with the tail hood;
The protection device comprises: an insulation layer and a wear layer; the insulation layer is disposed on an inner wall of the turning hood; and the wear layer is disposed on the heat insulation layer.
The protection device for the converter flue provided by the embodiment of the present invention comprises: an insulation layer and a wear layer; the insulation layer is disposed on the inner wall of the converter flue; and the wear layer is disposed on the insulation layer .