An energy-saving door lining brick for a coke oven

Abstract

The invention relates to a door structure of a coke oven, and particularly relates to an energy-saving door lining brick for a coke oven. The door lining brick includes a lining brick main body, a glaze surface, a web and fastening members. The lining brick main body is provided with at least one concave type hollow structure, and is provided with fastening member connecting holes. The glaze surface is hung on the external surface, in contact with coke, of the lining brick main body. The wed covers the concave type hollow structure. The upper surface of the lining brick main body is in close contact with the web. The web and the lining brick main body are fastened through the fastening members so that the concave type hollow structure becomes a sealed cavity. The bottom of the web is coated with a coating. Heat-reflecting coating having high reflectivity is adopted by the coating. The lining brick is a fire-resistant precast block lining brick, and has a height of 500-2000 mm. The lining bricks are arranged into a row up and down and are tightly mounted inside an oven door frame. The lining brick can greatly reduce the present oven door thickness, reduce the temperature of the external wall of an oven door, reduce heat loss and save energy.

Description

technical field [0001] The invention relates to a coke oven door structure, in particular to an energy-saving coke oven door lining brick. Background technique [0002] At present, most of the furnace door lining bricks used in my country are mainly cordierite bricks. Cordierite bricks have high thermal shock stability, but harmful substances can easily penetrate into the bricks, reducing the physical properties of the bricks, and the cleaning of the carbon deposit layer will cause mechanical damage to the furnace door lining bricks. In addition, the size of the above-mentioned furnace door bricks is small, and the masonry process is time-consuming and laborious; once damaged, it will take a long time to masonry, which will affect the normal production and operation of the coking enterprise. Glazed bricks for coke oven doors solve the problems of tar removal and anti-penetration, but fail to reduce the surface temperature of the furnace door. Therefore, there is an urgent ...

AI Technical Summary

Problems solved by technology

However, if the glazed structure is not adopted, there will still be tar infiltrated into the lining brick, which is inconvenient for maintenance, and the labor intensity of workers to remove carbon deposits from the furnace door is not significantly reduced, and there is no obvious effect of reducing the surface temperature of the furnace door.

[0004] Chinese patents ZL200620091980.1 and ZL200720016156.4 disclose a coke oven door structure, both of which use large horseshoe-shaped lining bricks with glazed surfaces. Patent ZL200620091980.1 uses loose heat insulating materials inside the horseshoe-shaped bricks in rectangular holes. Pouring into a heat-insulating cast body, this method can reduce the overall weight of the furnace door, and the heat insulation effect is also enhanced. The glaze surface is not easy to hang tar, but the two materials are prone to separation due to different expansion rates at high temperatures, and there is no fastening bolt and furnace. The web of the door frame is connected; the patent ZL200720016156.4 has been upgraded, and the structure filled with bulk heat-insulating castables is not used, and the fastener structure is added inside, but the fastener structure is not inside the brick and the brick is thinned inside the hollow structure The temperature of the brick surface increases, resulting in low structural strength of the fasteners, which affects the service life; horseshoe-shaped bricks are prone to strong convective heat transfer through the interior of the structure, reducing the heat insulation effect

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