JPH064050U - Coke oven brick wall structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a brick wall structure for the coke oven furnace wall that ensures good heat transfer to the carbonization chamber and ensures the required strength. [Summary] In a structure of a coke oven furnace wall, a carbonization chamber wall brick is formed into a thin wall having a thickness of 70 to 90% of a carbonization chamber wall joint portion, and a concave portion-shaped carbonization chamber having projections at both ends of the carbonization chamber joint portion. Coke oven consisting of walls A brick structure of the oven wall. [Effect] The carbonization chamber wall can be thinned and the productivity of the coke oven can be increased without deteriorating the structural strength of the furnace body necessary for avoiding gas leakage and brick damage.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a brick structure of a coke oven furnace wall.

[0002]

[Prior art]

 Conventionally, a carbonization chamber wall in a brickwork structure of a coke oven furnace wall has a constant thickness, and a brickwork structure in which a square dowel or a round dowel is fitted to the joint is usually used. A specific example of this is shown in FIG. That is, FIG. 3 is a sectional view of a carbonization chamber wall structure of a conventional chamber furnace type coke oven. As shown in FIG. 3, the heat generated in the combustion chamber 1 is transferred to the carbonization chamber 2 through the ordinary thick-walled bricks 7, and the heat causes the coal to be carbonized to form coke. Is. In the thick-walled bricks 7 that are usually used in this case, the brick thickness is determined because it is necessary to secure the required strength. On the other hand, on the other hand, if the furnace wall is made thicker, sufficient strength can be secured, but conversely, the thicker the wall becomes, the worse the heat transfer to the carbonization chamber becomes, and the coal carbonization effect in the carbonization chamber becomes worse. The coke oven productivity becomes extremely poor as a result.

Therefore, as one method of solving such a problem, in order to accelerate the carbonization of the carbonization chamber, a conventional thick wall brick in which the furnace wall is simply thinned is used. As one example thereof, Japanese Utility Model Laid-Open No. 52-115651 is known. This is because the brick shape is straight, the furnace wall is simply thinned, and the wall thickness is used as a parameter to show the optimum value of the brick size for each part to secure the required strength. JP-A-54-157102 and JP-A-54-157103 are known.

[0004]

[Problems to be solved by the device]

 As described above, heat transfer to the carbonization chamber is poor at the wall of the conventional carbonization chamber that has a constant thickness, and therefore the carbonization rate of coal in the carbonization chamber decreases, so it is necessary to promote some carbonization. There is. Also, when the furnace wall is simply thinned as in Japanese Utility Model Laid-Open No. 52-115651, heat transfer to the carbonization chamber is improved, but because the wall is thinned, the structural strength of the joint decreases. There is a problem of doing. Furthermore, as in JP-A-54-157102 and JP-A-54-157103, bricks for each part are simply thinned in the furnace wall and the required strength is secured by using the wall thickness as a parameter. There is a problem that it is not possible to secure the strength at the joint of the flue partition wall brick and the structural strength of the furnace body against horizontal bending only with the optimum size.

[0005]

[Means for Solving Problems]

 As a result of earnest efforts to solve the above-mentioned problems, the inventors of the present invention have tried to secure the structural strength of the furnace body against horizontal bending, in order to secure the strength of the furnace wall bricks, as well as the carbonization chamber wall bricks and the flue partition wall bricks. The problem is solved by giving a normal brick wall thickness that does not reduce the wall thickness to the joint part, thereby promoting heat transfer in the thin wall part and ensuring a predetermined strength in the welded part. Is. The gist of the invention is that, in the structure of the coke oven furnace wall, the thickness of the brick wall of the carbonization chamber is 70 to 90% of the thickness of the wall portion of the carbonization chamber, and the joint portion of the carbonization chamber has protrusions with different ends. The brick wall structure of a coke oven furnace wall is characterized in that it is composed of a recessed carbonization chamber wall.

[0006]

[Action]

 Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view of a carbonization chamber wall structure of a chamber furnace type coke oven according to the present invention. In FIG. 1, it is necessary to make the brick structure between the combustion chamber 1 and the carbonization chamber 2 thinner to ensure a predetermined strength. Therefore, first, in order to ensure the structural strength of the furnace body against horizontal bending, the normal brick wall thickness that does not reduce the wall thickness is used at the carbonization chamber wall bricks 3 and at the joints between the carbonization chamber wall bricks 3 and the flue partition wall bricks 4. The structure that gives That is, the portion A is made thin, and the portions B1 and B2 required for structural strength have a normal brick wall thickness.

Further, the joint C of the flue partition wall brick 4 and the heat conduction span D at the joint C correspond to the thinning of the portion A, and are compared with the conventional brick-laying structure shown in FIG. , D <D ′, C≈C ′. By adopting such a structure, it is possible to set the joint portion of the flue partition wall brick 4 so that heat transfer is not alienated. In addition, this joining structure is a concave brick material in which the lengths of B1 and B2 are changed in the lateral direction, and the combination thereof forms one block by joining B1 and B2, and joins the flue partition brick 4 to B1. It is composed of a set of the above-mentioned states, and they are continuously arranged in the lateral direction. The bricks facing each other and the bricks in the vertical direction have a structure in which the joints are offset by one block and are constructed in combination. As a result, it is possible to maintain a structure that does not leak heat or the like from the joint portion of the brick.

FIG. 2 is a sectional view showing one thin-walled brick forming a brick structure according to the present invention. In FIG. 2, the carbonization chamber wall brick 3 is formed in a concave shape composed of a combination of a thin wall portion 5 and a normal brick thickness portion 6. In this case, the thickness of the thin-walled portion 5 is 70 to 90% of that of the normal brick thickness portion 6, and the thin wall portion 5 is a thin wall. The reason is that a brick thickness of 100 mm or more is generally used, and particularly 100 to 120 mm is generally used. Therefore, if it is less than 70% of these, sufficient structural strength of a furnace can be obtained even if a normal brick thickness portion is provided. I can't. Further, if it exceeds 90%, the thickness is not so different from the conventional thickness and the desired effect cannot be sufficiently achieved, so the ranges are set to those ranges. By thinning the carbonization chamber wall brick 3 that is a portion other than the flue partition wall in such a range, a brick shape in which the thin wall portion and the normal thick portion are connected by a smooth arc is formed, Therefore, stress concentration can be avoided.

[0009]

[Effect of device]

 As described above, by implementing the present invention, it is possible to make the wall of the carbonization chamber thinner without impairing the structural strength of the furnace body required for avoiding gas leaks and brick damage, and to increase the productivity of the coke oven. It has a very useful industrial effect.

[Brief description of drawings]

FIG. 1 is a sectional view of a carbonization chamber wall structure of a chamber coke oven according to the present invention,

FIG. 2 is a cross-sectional view showing one thin-walled brick forming a brickwork structure according to the present invention;

FIG. 3 is a sectional view of a carbonization chamber wall structure of a conventional chamber furnace type coke oven.

[Explanation of symbols]

 1 combustion chamber, 2 carbonization chamber, 3 carbonization chamber wall brick, 4 flue partition wall brick, 5 thin wall part, 6 normal brick thickness part, 7 normal thick wall brick.

Claims (1)

[Scope of utility model registration request] 1. A structure of a coke oven furnace wall, wherein a brick wall thickness of the carbonization chamber wall is 70 to 90% of a thickness of the carbonization chamber wall joint portion, and the carbonization chamber joint portion has a concave shape having different protrusions at both ends. Coke oven brick wall structure characterized by being composed of carbonization chamber walls.