JPH07331245A - Method for repairing columnar part of suction zone in coke dry quenching equipment and upper structure of opening for suction zone - Google Patents

Abstract

PURPOSE:To readily and safely repair the subject columnar part of a suction zone in dry coke quenching equipment by supporting a partition wall of the equipment from the lower side with supporting members, exchanging bricks in the whole columnar part of the suction zone for new ones, ensuring great openings and enhancing cooling effects on coke. CONSTITUTION:This method for repairing columnar parts of a suction zone is to support a partition wall 7 on both sides of each columnar part 8 requiring the repair from the lower side with supporting members 13 and exchange bricks in the whole columnar part 8 of the suction zone for new ones in a method for repairing the columnar part 8 of the suction zone in coke dry quenching equipment provided by installing a cooling chamber in the lower part and a prechamber 2 in the upper part, surrounding the prechamber 2 with the partition wall 7 constructed by brick laying, arranging an annular flue 5 divided from the prechamber 2 with the partition wall 7 on the outer peripheral side of the partition wall 7 and supporting the lower part of the partition wall 7 with the columnar part 8 of the suction zone formed by the brick laying from the inner wall 9 of the cooling chamber. Thereby, the columnar part 8 of the suction zone is readily and safely repaired at a low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repairing a suction band column portion of a coke dry fire extinguishing system and a superstructure of an opening of the suction band column, and in particular, it is possible to repair the entire suction band column portion and enable coke dry fire extinguishing The present invention relates to a method of repairing a suction band column of a coke dry fire extinguishing system and a superstructure of a suction band opening for reducing the maintenance cost of the suction band column of the equipment.

[0002]

2. Description of the Related Art FIG. 3 shows a vertical cross section of an upper portion of a cooling chamber of a conventional coke dry fire extinguishing system. In FIG. 3, the red hot coke is supplied from the top inlet 1 to the prechamber 2
It is charged into the inside of the cooling chamber 3 and gradually moves downward into the cooling chamber 3. In this cooling chamber 3,
The coke is cooled by a cooling gas introduced from below.

The cooled coke is discharged by a discharge device (not shown) provided at the bottom of the cooling chamber 3. The gas that has become hot by exchanging heat with the red hot coke enters the annular flue 5 from the suction flue 4 and is sent to the dust remover (not shown) and the waste heat boiler (not shown) via the duct section 6.
After heat exchange, it is returned to the cooling chamber 3 again.

In the upper part of the cooling chamber 3, a pre-chamber 2 and an annular flue 5 that surrounds the pre-chamber 2 are partitioned by a partition wall 7 with the lower part open. This partition wall 7
Pillar portions (hereinafter, may be abbreviated as “pillars”) 8 are provided at predetermined intervals to support the above from below. Figure 4,
As shown enlarged in FIG. 5, the pillar 8 is constructed integrally with the partition wall 7 and the inner wall 9 by brickwork. Note that FIG. 5 is a cross-sectional perspective view showing the structure of the pillar portion 8.

[0005]

In the conventional coke dry fire extinguishing equipment, the brick of the column portion 8 is apt to crack due to the load from the partition wall 7 and the stress due to thermal expansion. The mechanism of this crack will be described with reference to FIG. The column portion 8 of the suction flue 4 receives an upper load W from the partition wall 7. Fifth
As shown in FIG. 6 and FIG. 6, since the column portion 8 has an overhang shape, this load is concentrated on the front edge of the column portion 8 inside the furnace, and as a result, The load on the inner front edge increases locally, and the brick is likely to crack or fall off.

Further, when this fire extinguishing equipment is used, a stress F due to thermal expansion is generated in the pillar portion 8, and the pillar portion 8 receives a reaction force F1 with it. In this manner, the load W and the reaction force F1 are applied to the brick 10 of the column portion 8 and various other pressing forces (for example, the reaction force from the iron shell 11 and the sliding pressure of the coke) and the load act on the brick 10. . When these forces acting on the brick 10 exceed the strength of the brick 10, cracking occurs as indicated by the thick solid line C1 in the figure. Furthermore, the cracks that occur also affect adjacent bricks and may cause chain cracks. Incidentally, as shown by the broken line C2, a crack may occur so as to connect the vertical joints 25 of the brick 10. Further, as shown by the thick solid line C3, cracks may occur up to the upper part of the column. In this case, the upper load W is not dispersed in the direction of the iron shell 11 and all the load W may be applied to the tip of the suction strip column portion 8 to promote the falling of bricks.

In the repair of the brick of the suction strip pillar portion 8 such as cracking or falling off, since the load from the partition wall 7 is applied to the pillar portion 8, it is impossible to repair the pillar portion 8 over a wide range. Met. In particular, in the case where a crack connecting the vertical joints 25 of the brick 10 as shown by the broken line C2 described above occurs, the load from the partition wall 7 acts in the direction of increasing the crack. Therefore, it was extremely difficult to repair the pillar portion 8.

Further, the upper part of the suction band opening, that is, the column 8
As shown in FIG. 5, the upper part of the structure generally has a jack arch structure having a circular core.

Therefore, conventionally, only partial repair in an extremely narrow range where the influence of the load from the partition wall 7 is small can be performed. As a result, bricks could fall out within a short period of time after repair, which was dangerous, and the coke dry fire extinguishing equipment had to be stopped each time.

Incidentally, in the conventional jack arch, there is a risk that the bricks forming the arch may fall out when the furnace is entirely deteriorated.

Further, as shown in FIG. 8, for cooling (N ₂ )
The gas passes between the coke lumps to cool the coke lumps, and then becomes hot gas and moves from the suction flue 4 to the annular flue 5. When passing between the coke lumps, the gas flow velocity is high because the passage is narrow compared to the cross section of the suction flue 4, so that the gas is accompanied by powder coke. Suction flue 4
Since the cross section of the gas passage is wider inside than the gas passage between the coke lumps, the gas flow velocity is small, and therefore the coke powder is deposited in the lower part of the suction flue as shown in FIG.

When the amount of the accumulated coke powder increases, the gas passage in the suction flue 4 narrows and the gas flow velocity increases, and as a result, the coke dust is scattered from the annular flue 5 to the dust remover. Like After the time when the accumulation and dispersion of the powder coke became balanced, the cross section of the suction flue 4 maintained a constant opening area, but the cross section of the suction flue became smaller due to the accumulation of the powder coke. The gas flow resistance increases by that amount. Since the circulating fan capacity is constant, the amount of circulating gas decreases due to the increase in gas flow resistance, and as a result, the cooling efficiency decreases.

An object of the present invention is to solve the above-mentioned conventional problems, to enable repair of the entire suction strip column portion, and to make the maintenance cost of the suction strip column portion of the coke dry fire extinguishing equipment extremely low. , To provide a method for repairing a suction column of a coke dry fire extinguisher, which makes the production efficiency of the coke dry fire extinguishing equipment extremely high.

Another object of the present invention is to provide a stable upper structure of the suction band opening which has a low risk of falling off and which can increase the flow rate of the cooling gas.

[0015]

A method of repairing a suction column of a coke dry fire extinguishing system according to the present invention has a cooling chamber at a lower portion, a prechamber at an upper portion, and a brick around the prechamber. A partition wall constructed by a stack is encircled, an annular flue that is partitioned from the prechamber by the partition wall is provided on the outer peripheral side of the partition wall, and the lower part of the partition wall is a brick from the inner wall of the cooling chamber. In a method of repairing a suction strip column part of a coke dry fire extinguishing system supported by stacked suction strip column parts, the partition wall is supported from below by a supporting member, and the entire suction strip column part is replaced with brick. It is characterized by repairing.

The upper structure of the suction band opening of the suction band column of the coke dry fire extinguishing equipment of the present invention has a cooling chamber in the lower part, a prechamber in the upper part, and bricks around the prechamber. A partition wall constructed by the above is circulated, and an annular flue that is partitioned from the prechamber by the partition wall is provided on the outer peripheral side of the partition wall, and the lower part of the partition wall is covered with brick from the inner wall of the cooling chamber. In the upper structure of the suction band opening of the suction band column of the coke dry fire extinguisher supported by the suction band column, the upper part of the suction band opening is a curved jack arch having a circular core. It is what

[0017]

In the method for repairing the suction strip column portion of the coke dry fire extinguishing equipment of the present invention, since the partition wall is supported by the supporting member from the lower side, the load of the partition wall is not applied to the suction strip column portion. It is possible to extremely easily and safely repair the entire suction band column portion.

In the upper structure of the suction band opening of the suction band column of the coke dry fire extinguishing equipment of claim 2, since the opening area can be increased by forming the curved jack arch, the gas flow rate can be increased. The coke cooling effect is increased.

[0019]

EXAMPLES Examples will be described below with reference to the drawings. FIGS. 1, 2, and 7 show a method of repairing a suction column part of a coke dry fire extinguisher system according to an embodiment of the present invention,
1 is a perspective view showing a state in which a partition wall is supported from below by a support member, FIG. 2 is a front view thereof, and FIG. 7 is a sectional view thereof.
The coke dry fire extinguishing equipment shown in this embodiment is the same as the coke dry fire extinguishing equipment shown in the conventional example, and the same reference numerals indicate the same parts.

In order to repair the suction column portion 8, after the coke inside the coke dry fire extinguishing equipment is discharged in advance,
A work deck 12 is installed below the partition wall 7, and a support member 13 is installed on the work deck 12. This support member 13
Is composed of a jack 15, a rod-shaped support member 16, and a closing frame 17. A floor board 14 is laid on the work deck 12 of the coke dry fire extinguisher, and the jack 1 is placed on the floor board 14.
5, the rod-shaped support member 16, and the closing frame 17 are sequentially installed. Note that the jack 15 is configured to move up and down by an appropriate means such as a lever, a screw, and hydraulic pressure.

Next, the upper surface of the pressing frame 17 contacts the lower surface of the partition wall 7, and the supporting member 13 is jacked up to a height at which the load of the partition wall 7 can be supported. Then, the support member 13 is supported by the support members 13 installed at two or more places so that the partition wall 7 is sandwiched between the suction wall column portions 8 from the lower side.
Repair (replacement of bricks) of the repaired portion of the suction strip column portion 8 (the portion where there is crack, dropout, etc. of the brick of the suction strip column portion 8 with dots shown in FIGS. 2 and 7) is performed.

In this repair method for the suction column of the coke dry fire extinguishing equipment, the partition wall 7 is supported from below by the support member 13.
Since both sides of the column portion 8 requiring repair are supported by, the entire suction band column portion 8 can be repaired very easily.

As a result, once the repair is performed, the repair of the pillar portion 8 becomes unnecessary for a long period of time, and the maintenance cost of the coke dry fire extinguishing equipment becomes extremely low. In addition, the brick is prevented from falling off. Furthermore, since repair is not required for a long period of time, the work for repair is not stopped and the production efficiency of the equipment is extremely high.

In this embodiment, as shown in FIG. 1 and FIG. 2, the suction has the same circular core as the partition wall 7 in the horizontal direction and the lower side of the conventional jack arch is curved. The upper structure of the band opening. With this structure, as is clear from the comparison of FIG.
Since a large area can be taken, the gas flow rate can be increased and the coke cooling effect is increased. In addition, the brick will not crack, come out, or fall off.

[0025]

As described above, according to the method for repairing the suction column of the coke dry fire extinguishing equipment of the present invention, the entire suction column can be repaired easily and safely.
As a result, once the repair is performed, it is not necessary to repair the suction strip column portion for a long period of time, and the maintenance cost is remarkably low. In addition, the brick is prevented from falling off. Furthermore,
Since repair work is not required for a long period of time, the work for repair work will not be stopped, and the production efficiency of the coke dry fire extinguishing equipment will be extremely high.

In the superstructure of the suction band opening of the suction band column of the coke dry fire extinguishing equipment of the present invention, since the area of the opening can be made large, the flow rate of gas can be increased and the coke cooling effect can be obtained. Increase. In addition, the brick will not crack, come out, or fall off.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a partition wall is supported from below by a support member.

FIG. 2 is a front view showing a state in which a partition wall is supported from below by a support member.

FIG. 3 is a vertical sectional view showing a conventional example.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a vertical cross-sectional perspective view illustrating the configuration of a conventional suction flue.

FIG. 6 is a cross-sectional view illustrating the mechanism of cracking.

FIG. 7 is a cross-sectional view showing a state in which the partition wall is supported from below by a support member.

[Fig. 8] Fig. 8 is a schematic cross-sectional view illustrating a state of accumulation of powder coke in a suction flue.

FIG. 9 is a schematic front view comparing the present invention with a conventional jack arch.

[Explanation of symbols]

 2 Pre-chamber 3 Cooling chamber 4 Suction flue 5 Annular flue 10 Brick 11 Iron skin 12 Working deck 13 Supporting member 14 Floor plate 15 Jack 16 Supporting material 17 Compression frame 20 Opening

Claims (2)

[Claims] 1. A cooling chamber is provided at a lower portion, a pre-chamber is provided at an upper portion, and a partition wall constructed by bricks is circulated around the pre-chamber, and the partition wall separates the pre-chamber from the pre-chamber. A divided annular flue is provided on the outer peripheral side of the partition wall, and the lower part of the partition wall is supported by the suction band column on which bricks are piled up from the inner wall of the cooling chamber. The method for repairing the suction band pillar portion of the coke dry fire extinguishing equipment, characterized in that the partition wall is supported from below by a supporting member, and the entire suction band pillar portion is replaced by bricks for repair. . 2. A cooling chamber is provided at a lower portion, a pre-chamber is provided at an upper portion, and a partition wall constructed by bricks is circulated around the pre-chamber, and the partition wall separates the pre-chamber from the pre-chamber. A divided annular flue is provided on the outer peripheral side of the partition wall, and the lower part of the partition wall is supported by the suction band column on which bricks are piled up from the inner wall of the cooling chamber. In the upper structure of the suction band opening, the upper structure of the suction band opening of the suction band column of the coke dry fire extinguishing equipment is characterized in that the upper part of the suction band opening is a curved jack arch having a circular core.