JPH0449162Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a slopping-free column brick for constructing a sloping-free bulkhead of a coke dry fire extinguishing furnace.

(Conventional technology) In coke dry fire extinguishing equipment (CDQ),
As shown in Fig. 5, the fire extinguishing furnace has a prechamber 2 above the furnace body 1, and a fire extinguishing gas of 400 to 800°C blown up from below is provided on the central peripheral wall of the furnace body 1. The exhaust gas is sent to a ring duct 4 through a large number of slopping fuels 3, and the exhaust gas is sent to a waste heat boiler (not shown) through the ring duct 4. By the way, such a furnace body is generally constructed of bricks, and in particular, the partition wall 5 between the slopping fries 3, 3 on the central peripheral wall of the furnace body is straight, as shown in FIG. The structure is constructed by piling up the slopping free column bricks on the body brick 6. Note that on the partition wall 5, a duct inner cylinder wall 7 is constructed by stacking ring duct inner cylinder bricks, and the partition wall 5 receives the load of the wall 7.

FIG. 7 shows a conventional pillar brick 8 used for constructing the partition wall 5, which is provided with grooves 9 and projections 10 on the upper and lower surfaces of the brick, intersecting with the longitudinal direction of the brick. The construction of the partition wall 5 is carried out by stacking the upper and lower pillar bricks 8 with their protrusions 10 and grooves 9 engaged with each other, as shown in FIG. That is, pillar brick 8
movement in the direction of the furnace core is prevented by engagement of protrusions and grooves. The movement of the lowermost furnace core direction end column bricks in the furnace circumferential direction is restrained by the friue bottom bricks 13 shown in FIG. Further, as shown in Fig. 8, the pillar bricks at the lowest stage of the partition wall 5 are not provided with protrusions on their lower surfaces, and the pillar bricks at the uppermost stage in the direction of the furnace core are provided with grooves on their upper surfaces. Not yet. In addition, in Figure 7,
Reference numerals 11 and 12 are the front end and rear end surfaces of the pillar bricks 8 in the longitudinal direction. In a coke dry fire extinguishing furnace in which the partition wall 5 between the friues 3 and 3 is constructed using the pillar bricks 8 as described above, the extinguishing gas that circulates through the fries changes in the range of 400 to 800°C, and the pillar bricks 8 of the partition wall 5 However, due to the thermal stress, the pillar bricks 8 in the central part, especially at the ends in the direction of the furnace core, are damaged by their protrusions 10 and/or grooves 9.
Starting from this point, cracks or cracks occur in the direction perpendicular to the longitudinal direction of the brick. The red hot coke in the furnace enters the friue 3 at a predetermined angle of repose from the upper end 14 of the frie opening shown in FIG. A horizontal force acts on the cracked part of the pillar brick that has cracked at the directional end, causing the crack to grow and the cracked part to fall off. When the cracked part falls off, the pillar bricks directly above and below that pillar brick will crack.
This may encourage cracking and falling off, and eventually lead to the brickwork above the column bricks falling off.

(Problems to be Solved by the Invention) The present invention provides a slotting system for constructing a slopping-free bulkhead for a coke dry fire extinguishing furnace, which prevents the above-mentioned cracking and effectively prevents the cracked part from falling out even if cracked. It provides Furyu Pillar Bricks.

(Means for solving the problem) The gist of the present invention is to provide an upper surface protrusion on the upper surface of the brick along one side of the brick, and provide a lower surface projection on the lower surface of the brick along the other side of the brick, The distance between the inner side surface of the upper surface protrusion and the other side surface of the brick gradually decreases toward the end surface in the longitudinal direction of the brick, and the distance between the inner side surface of the lower surface protrusion and one side surface of the brick gradually increases toward the longitudinal direction of the brick. It features a sloping brick pillar.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Figures 1A and 1B are perspective views of the slopping free pillar bricks 15R and 15L of the present invention, with one side 16 of the brick on the top surface of the brick.
An upper surface projection 17 is provided along the lower surface of the brick, and a lower surface projection 1 is provided along the other side surface 18 of the brick.
9 is provided, and the distance h between the inner side surface 20 of the upper surface protrusion 17 and the other side surface 18 of the brick gradually decreases toward the longitudinal end surface 21 of the brick, and the lower surface protrusion 1
The pillar brick is such that the distance g between the inner side surface 22 of the brick 9 and one side surface 16 of the brick gradually increases toward the tip end surface 21 in the longitudinal direction of the brick. 23 is the rear end surface of the brick in the longitudinal direction.

Figure 2 shows a column brick 15R' that is symmetrical with respect to the side surface 18 of the slopping free column brick 15R in Figure 1B, and a side surface 1 of the column brick 15L in Figure 1A.
Pillar brick 15L' which is symmetrical with respect to 8, and the first
This figure shows a slopping free column brick unit (hereinafter referred to as a column brick unit) 24 which is a combination of a total of four column bricks, ie, column bricks 15R and 15L shown in the figure. That is, pillar brick 15L (15L')
and the side surfaces 18, 18 of 15R (15R') are brought into contact with each other. The combination of bricks 15L and 15R (15L', 15R') has grooves 25 on the top and bottom surfaces of which the width gradually decreases from the rear end face to the front end face in the longitudinal direction.
The lower surface protrusion 26 of the combination brick of the bricks 15L and 15R is formed with the protrusion 26.
The combined bricks L' and 15R' are fitted into the upper surface grooves 25 to form a pillar brick unit 24.

For example, if bricks 15L' and 15R' are fixed in this pillar brick unit 24, the brick 15
L and 15R do not move because they are wedge-connected with protrusions in the longitudinal direction of the brick (in the direction of the furnace core).
Furthermore, it does not move in the direction perpendicular to the side surface (circumferential direction), thereby preventing it from falling off. This is for example brick 15
Even if the bricks are cracked in the longitudinal center portions of L and 15R in a direction perpendicular to the longitudinal direction of the brick, the cracked portions are also prevented from falling off.

Size (volume) of the pillar brick unit 24
is a pillar brick unit 2 used at the same partition wall position as the conventional pillar brick shown in FIG. 7 used at the center of the end of the partition wall 5 shown in FIG.
4 has the same shape and dimensions as the slopping free pillar brick 27 shown in FIG. 4 and proposed separately by the present applicant. The pillar brick 27 has grooves 25 and protrusions 26 formed on its upper and lower surfaces, the width of which gradually decreases from the rear end face to the front end face of the brick.

As shown in FIG. 3, the end of the partition wall 5 in the direction of the furnace core is made of nine piles of pillar brick units 24 shown in FIG. 2.
The partition wall 5, excluding the end portion in the direction of the furnace core, was constructed by stacking nine levels of pillar bricks 27 as shown in Fig. 4. As with the conventional method, the pillar brick in the lowest level of the partition wall 5 has no protrusions on the lower surface of the lower pillar brick of the lowest level pillar brick unit 24 of the partition wall 5. Also, no protrusions are provided on the lower surface of the pillar brick in the lowest level.

During the annual maintenance of bulkhead 5 one year after its operation, no cracking or falling off of the column bricks was observed. On the other hand, the seventh
In the partition wall 5 shown in Fig. 8, which was constructed using the pillar bricks 8 shown in the figure, during annual maintenance one year after operation, many cracks and falling-off of the pillar bricks at the end of the hearth in the center of the partition wall 5 were observed. .

(Effects of the invention) As detailed above, the slopping-free column brick of the present invention can effectively prevent cracking and falling off in the constructed sloping-free bulkhead, and can be used to repair fire furnaces during annual repairs. Costs can be reduced significantly.

[Brief explanation of the drawing]

Figures 1A and 2B are explanatory diagrams of one embodiment of the slopping-free column brick of the present invention, Figure 2 is an explanatory diagram of the slopping-free column brick unit, and Figure 3 is an illustration of the column brick of the present invention. FIG. 4 is an explanatory diagram of an example of a slopping-free partition wall constructed using the method, and FIG. 4 is an explanatory diagram of pillar bricks used together with the construction of the partition wall in FIG. Fifth
The figure is an explanatory diagram of a coke oven dry fire extinguishing furnace, Figure 6 is an enlarged view of the central peripheral wall of the fire extinguishing furnace, Figure 7 is an explanatory diagram of a conventional slopping free pillar brick, and Figure 8 is an explanatory diagram of a conventional pillar brick. FIG. 2 is an explanatory diagram of a frieux bulkhead constructed using bricks. 1...furnace body, 2...prechamber, 3...slopping flue, 4...ring duct, 5...
... Partition wall, 6 ... Straight body brick, 7 ... Duct inner cylinder wall, 8, 15R, 15L, 15R', 15L', 27
...Pillar brick, 9,25...Groove, 10,26...
Protrusion, 11, 21... Tip surface, 12, 23... Rear end surface, 13... Friyu bottom brick, 14... Friyu opening upper end, 16, 18... Side surface, 17... Upper surface projection, 19... Lower surface projection. , 20, 22...inner side surface, 24...column brick unit.

Claims (1)

[Scope of utility model registration request] An upper protrusion is provided on the upper surface of the brick along one side of the brick, and a lower protrusion is provided on the lower surface of the brick along the other side of the brick, and the distance between the inner side of the upper protrusion and the other side of the brick is A slotting free column brick characterized in that the distance between the inner side surface of the lower surface protrusion and one side surface of the brick gradually decreases toward the tip surface in the longitudinal direction of the brick and increases gradually in the longitudinal direction of the brick.