JPH0226916Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the brickwork structure of the heating wall in a coke oven, particularly the heating wall of a coke oven, that is, the furnace wall of the coking chamber (hereinafter simply referred to as the furnace wall) and the partition wall of the combustion chamber (hereinafter simply referred to as the partition wall). This relates to the improvement of the brickwork structure of a part of a building that has been partially repaired and replaced with new bricks.

Coke ovens are mainly constructed of refractory bricks due to their high heat load, but due to the effects of mechanical external forces, thermal stress, charged coal ash, corrosive gases, etc.
After long-term use, damage may occur, and the carbonization chamber, which is sandwiched between heating walls from both sides and into which coking coal is charged, is particularly prone to damage because the effects of the above-mentioned main factors are concentrated. , this damage usually defeats the mission of the coke oven. If the carbonization chamber furnace wall is damaged, it may cause joint cuts, cracks, distortions, chips, etc.
Stepping, melting damage, or clinker adhesion due to melting of charged coal ash occurs. These also enhance each other's effects, accelerating damage, leading to intensified gas leakage through the furnace walls and increased kiln ejection resistance. Hot mortaring is carried out to prevent gas leaks, and repair measures such as scraping the surface of the protruding bricks and removing adhering materials such as clinker can be taken to prevent increased kiln ejection resistance. Although sometimes effective, it is generally not perfect.

Therefore, if the heating wall of the carbonization chamber is severely damaged and cannot be effectively repaired by the above-mentioned measures, it is necessary to partially or completely dismantle and replace the damaged heating wall. There are no repair measures.

Generally, when completely reloading with new bricks, the furnace can be built using the same brickwork structure as when it was newly constructed, but in the case of partial reloading, the old brickwork is replaced with new bricks or a brickwork with almost the same expansion rate. Depends on the method of constructing the furnace wall by connecting unreliable materials (e.g. cement). On the other hand, the feature of the coke oven wall structure is that it can maintain its strength even when subjected to mechanical external forces that affect the oven wall, coal pressure during charging due to charging coal, pressure during coke extrusion, etc. Furthermore, in order to prevent gas leakage from the combustion chamber and carbonization chamber side, the bricks are usually laid in a staggered manner. The refractory bricks used for the walls of the carbonization chamber expand by a maximum of 1.2% during hot weather. Therefore, after connecting new bricks to the remaining old bricks and laying bricks for the repair furnace, in order to measure the temperature rise of the new bricks and restore it as an active furnace, it is necessary to ensure the smoothness of the furnace wall bricks, as well as to prevent the bricks from overhanging. It is necessary to give sufficient consideration to this. In order to maintain the smoothness of the furnace wall bricks, a brickwork structure is required that will not damage the old bricks due to the expansion of new bricks. Up until now, expansion absorption of old and new bricks could be carried out with a normal brickwork structure because the furnace height was low and the amount of expansion in the height direction was small, but when repairing a large furnace with a high furnace height, the amount of expansion was large and normal. This bricklaying method applies excessive force to the old bricks and is not suitable as a bricklaying method.

The purpose of this invention is to solve these conventional problems, prevent increased damage to the old brickwork in unrepaired areas, reliably maintain the strength of the bricks at the joint between the new and old bricks, and prevent the furnace wall bricks from burning. Of course the room side,
To provide a brick masonry structure that does not fall down or slip out on the side of a carbonization chamber and is easy to stack.

In order to achieve such an object, the brickwork structure of the present invention provides a coke oven in which a part of the furnace wall and the combustion chamber partition wall are provided with a new brickwork part. A fitting groove 21 is provided on one side of the end of each of the wall bricks 4 and 9, and includes a notched stepped portion 13 and a locking slope 14 formed with a downward slope toward the notched stepped portion 13. , the other side is provided with a notched stepped part 13' and a dowel part 18 which are connected to the adjacent furnace wall bricks 5 and 10 made of old bricks, and the fitting groove 21 corresponds to the groove 21. The ends of the furnace wall bricks 3 and 8 made of new bricks with end faces 15 are fitted together, and the bricks are piled up flush at the fitting part to create a space between the combustion chamber partition wall brickwork and the furnace wall brickwork. Straight joint 11 in the height direction
It is characterized by the formation of

Hereinafter, embodiments will be specifically illustrated and described with reference to the drawings.

FIG. 1 is a front view showing the stacked state of bricks on the furnace wall, FIG. 2 is a cross-sectional view taken along the line AA' in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line B-B' in FIG.

In the figure, 1 and 7 are furnace wall bricks, and 2 is partition wall bricks, which are old brickwork stacked in the normal upper and lower stacks. 3 and 8 are furnace wall bricks made of new bricks adjacent to these, and are stacked so that the ends of the old bricks in contact with partition wall brick 2 and the opposite end are flush (straight vertically). 8 is long 3
are stacked using shorter lengths. Reference numerals 4 and 9 indicate partition wall bricks made of new bricks installed in correspondence with the above-mentioned new furnace wall bricks 3 and 8, respectively. As is clear from Figure 1, this is also due to the fact that the surfaces corresponding to furnace wall bricks 3 and 8 made of new bricks are stacked flush, and are different from the furnace wall bricks 5 and 10 made of old bricks adjacent on the opposite side. In order to stack them, the end faces of 4 and 9 are made to have different sizes alternately.

Straight joints 11 are formed vertically throughout all stages at the joints between the new furnace wall bricks 3 and 8 and the new partition wall bricks 4 and 9. This straight joint part is straight in the vertical direction, but as is clear from the horizontal cross-sectional views in Figures 2 and 3,
A furnace wall brick fitting groove 21 formed by a cutout stepped portion 13 provided on the side surface of the end of the new partition wall bricks 4, 9 and a locking slope 14 formed on a downward slope toward this. Since it is formed between the end surfaces 15 of the corresponding furnace wall bricks 3 and 8, the cross section in the horizontal direction has a bent shape corresponding to such a combined surface of both bricks. 12 is a horizontal mortar joint, which uses thermally shrinkable mortar to cover the effects of expansion of new bricks.

16 is a combustion air port, and 17 is a burner brick for gas discharge. 18 is a dowel portion. 19 indicates the combustion chamber side, and 20 indicates the carbonization chamber side.

In this way, the present invention has straight joints 11 formed between the new furnace wall bricks 3, 8 and the partition wall new bricks 4, 9, so that the expansion in the height direction can be slid. , it is possible to use silica mortar with high adhesive strength without using shrinkable mortar with poor adhesive strength, and it is possible to achieve a high-strength bond and eliminate the negative effect on the old brick part caused by the expansion of new bricks. . In addition, partition wall bricks 4 and 9
The connection between the new bricks and the furnace wall bricks 3 and 8 is a fitting formed by a cutout stepped portion 13 facing the direction of the carbonization chamber 20 and a locking slope 14 facing the direction of the combustion chamber 19. Since the end face of the furnace wall brick is fitted into the fitting groove 21, the furnace wall brick is reliably prevented from falling toward the combustion chamber 19 side and slipping out toward the carbonization chamber 20 side. Moreover, since the fitting groove 21 has an obtuse corner corner formed by the locking slope 14 and has a wide opening, it is easy to carry out bricklaying work using new bricks.

According to the present invention, it is easy to construct a new brick section, the adverse effects on the old brick section due to thermal expansion of the new brick section are eliminated, and the new brick section itself has high strength and safety. The present invention is extremely useful when partially renewing a new brickwork section, ie, a heating chamber of a coke oven.

[Brief explanation of the drawing]

FIG. 1 is a front view of the furnace wall seen from the carbonization chamber side, FIG. 2 is a cross-sectional view taken along the line AA' in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line B-B' in FIG. 1, 5, 7, 10... old brick furnace wall bricks, 2,
6... Old brick combustion chamber partition wall brick, 3, 8... New brick furnace wall brick, 4, 9... New brick combustion chamber partition wall brick, 11... Straight joint, 13, 13'
...Notch stepped portion, 14... Locking slope, 18... Dowel portion, 21... Fitting groove.

Claims (1)

[Scope of utility model registration request] In a coke oven in which a part of the furnace wall and the combustion chamber partition wall are made of new brickwork, a cutout step is formed on one side of the end of the combustion chamber partition wall bricks 4 and 9 of the new brickwork part. A fitting groove 21 consisting of a shaped part 13 and a locking slope 14 formed with a downward slope toward the notch step part 13 is provided, and on the other side, a fitting groove 21 is provided in which the adjacent furnace wall bricks 5 and 10 made of old bricks are connected. A notched stepped portion 13' and a dowel portion 18 are provided for coupling, and the fitting groove 21 is provided with the end portions of the furnace wall bricks 3 and 8 made of new bricks having an end surface 15 corresponding to the groove 21. A coke characterized in that the bricks are fitted together and piled up flush at the fitting part to form a straight joint 11 in the height direction between the brickwork of the combustion chamber partition wall and the brickwork of the furnace wall. Brickwork construction of heating walls in furnaces.