JPS609230Y2 - coke bucket - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coke packet for transporting red-hot coke discharged from a coke oven to a coke dry extinguishing equipment.

Such coke packets are exposed to high temperatures (approximately 1100℃)
The system repeatedly transports red-hot coke from the coke oven to the coke dry extinguishing equipment.

In the conventional coke packet, as shown in FIGS. 1a and 1b, a heat-resistant steel liner 2 is arranged inside a steel body 1, and is connected to the steel body with bolts 11.

Therefore, although the liner itself has heat resistance, it does not have heat insulation properties, and the liner itself becomes high in temperature due to heat transfer from the red-hot coke charged inside, and the temperature of the steel body that holds it also rises.

Although the temperature rise of the liner and steel body is not uniform and is largely influenced by the red hot coke transportation time schedule, an example of temperature measurement records is shown in FIG.

In addition, each measurement point of (, t2 and t3 in FIG. 4 is
As shown in Figure 1b, liner 2, body inner flange 1
a and the main body outer flange 1b.

As is clear from FIG. 4, the lychee temperature rises when red hot coke is charged, but falls when it is discharged.

While repeating this, the liner temperature gradually increases to 60.
Heating and cooling reach S' equilibrium around 0°C.

On the other hand, the temperature t2 inside and outside the main body? and t3 rise with a gentle curve, and when the liner temperature reaches equilibrium, t3 also reaches equilibrium.

However, if there is a temperature difference between the inside and outside of the steel body member, thermal stress will naturally occur, but 12-13 = Δt is 1
If the temperature exceeds 00°C, the thermal stress will exceed the allowable value and cracks will occur in the main body.

If Δt is as high as 140° C., as in the example shown in FIG. 4, many cracks will occur in the steel body within three months of use.

Even if this crack is repaired by welding, the crack will appear again at the next monthly inspection.

Furthermore, even if the usage conditions for the packet are not so strict, in the case of conventional coke packets, cracks will always occur, although the time of occurrence will be slightly delayed, and these cracks must be repaired before use.

In Fig. 1a, 4 is a steel main body center beam, 5 is a center beam liner, 6 is a steel gate, and 7 is a gate liner, and there is a risk that cracks may occur in these center beams and gates as well. there were.

The present invention therefore aims to eliminate the above-mentioned conventional disadvantages and to prevent the steel body of the coke packet from cracking due to repeated transportation of red-hot coke.

According to the present invention, a heat insulating material is interposed between the steel body of the coke packet and the body liner, and this heat insulating material blocks the transmission of coke heat to the steel body, thereby preventing cracks in the body. Preventing it from occurring.

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

In FIG. 2, the same reference numerals as in FIG. It is interposed as shown in the figure.

By providing such a heat insulating material 8, the heat of the red-hot coke carried by the coke packet 3 is less likely to be transmitted to the steel body 1 through the body liner 2.
According to experiments, the temperature difference between the inner flange 1a and the outer flange 1b of the steel body 1 is 76°C, which prevents cracks from occurring in the steel body of the coke packet even when red-hot coke is repeatedly transported, and improves its durability. Improves performance and can be used for a long time.

Preferably, other similar heat insulating materials 9 and 10 are also interposed between the main body central beam 4 and its liner 5 and between the gate 6 and its liner 7, respectively, as shown in FIG. These steel central beams and gates can also be similarly protected from cracking to further extend the service life of the coke packet.

As a heat insulating material, asbestos begins to decompose at 500°C, so we collected plate-shaped pieces made from hard materials and repeatedly heated them to 800°C to find a material with excellent insulation and durability. Specifically, it is recommended to use vermosal sheet.

Further, the thickness of the heat insulating material is determined depending on the usage conditions of the packet.

It is best to cut the heat insulating material to match the dimensions of the inner surface (liner side) of each member of the steel main body, and cover it with a thin SUS plate to protect the heat insulating material.

Then, it is preferable to fix this to the inner surface of the steel body with a clip to prevent the heat insulating material from falling off from the steel body even if the liner is removed.

Note that even if a heat insulating material is interposed between the steel body of the coke packet and the liner, lining will not become difficult.

This is because, as mentioned above, the temperature of the liner becomes high, but when the temperature of the liner becomes high, its hardness decreases and its wear resistance decreases, which poses a problem against shear wear caused by red hot coke. It is necessary to cool the liner as much as possible, and for this reason, the steel body of conventional coke packets is assembled in a grid pattern, and the back side (outside) of the liner is all designed to be in contact with the outside air. As shown in Figure 3, the heat insulating material 8 is installed only on the inner surface of the steel body 1 so as not to interfere with the cooling of the liner 2, and the installation and removal of the liner is no different from conventional ones, making lining difficult. Never.

In addition, some regular packets have a brick-like lining on the inside, and by lining the inner surface of the steel body of the packet with a brick-like material, it not only provides heat resistance but also provides insulation. Because there is enough heat from the red-hot coke charged in the packet, the amount of heat transferred to the steel body is small, and there is no need to insert an insulating material between the lining and the body. Since the process of receiving, transporting, and discharging into the chamber of coke dry extinguishing equipment is repeated, if a brick-like lining is used, the lining material is often damaged due to the thermal shock of the red-hot coke, and the packet weight is heavy. For these reasons, these packets are rarely used.

[Brief explanation of the drawing]

Figure 1a is a sectional view showing a conventional coke packet; Figure 1b is a cross-sectional view of a conventional coke packet;
The figure is an enlarged detailed view of part A in Fig. 1a, Fig. 2 is a sectional view showing an example of a coke packet according to the present invention, Fig. 3 is an enlarged detailed view of part B in Fig. 2, and Fig. 4 is a coke packet. 2 is a table showing an example of temperature measurement records of the main body and liner in 1... Steel body, 2... Body liner,
3...Curved cork packet, 4...Main body center beam,
5...Central line of music, 6...Gate, 7...
...Gate liner, 8.9,10...Insulation material, 11...Bolt.

Claims (1)

[Scope of utility model registration request] A coke packet for transporting red-hot coke discharged from a coke oven to a coke dry extinguishing equipment, characterized in that a heat insulating material is interposed between at least the steel body and the body liner.