JPS6032666B2 - Red-hot coke extinguishing and steam recovery equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to equipment for extinguishing red-hot coke extruded from a coke oven and recovering the steam generated at the time.

Currently, from the viewpoint of energy conservation, various methods have been devised to recover the Korean radiation heat of the red-hot coke itself and the extinguishing sensible heat of the red-hot coke that is generated when extinguishing the red-hot coke discharged from a coke oven. A typical example is dry fire extinguishing equipment that uses inert gas to extinguish red-hot coke received from fire engines, but this equipment is expensive and requires a large installation space. Furthermore, since the extinguishing method uses inert gas, it takes a long time to extinguish the fire, and the coke transportation process to the fire extinguishing equipment becomes long, which lengthens the combustion time of the red-hot coke.
In particular, there were problems when installing it in existing coke ovens. In addition, as a special type of wet-type fire extinguishing vehicle, there is a fire-resistant fire-resistant vehicle that has a grate floor at the bottom and a box at the bottom that covers this, and has a sealed lid on the top that has a means for spraying pressurized water inside. Some are made by placing a sex box on a trolley.

After receiving red-hot coke inside the box, such fire extinguishing trucks
A sealing lid is attached to the top of the box, and in this state, water is injected from the nozzle of the pressure water injection means onto the red-hot coke inside the box, and the pressure of the steam generated at that time is applied to the top of the coke oven to blow the coke. The red-hot coke is extinguished by the water and steam flowing from top to bottom, and the generated steam is led into the bottom box at the bottom and collected. However, the purpose of this development was to remove dust from the steam generated during the digestion of red-hot coke and to prevent dust from being generated during coke extrusion. The dust in the steam generated during extinguishing is collected by the dust collection equipment on the fire extinguishing vehicle through the hood mounted on the guide vehicle that covers the fire. The dust is collected in a bottle using the dust collection equipment on the fire extinguisher. However, since such fire extinguishing trucks have only one box to receive the red-hot coke, one extrusion process of the coke oven working machine
Since the entire amount is received inside the box and the fire is extinguished, the generation of steam and the temperature change of the steam are intermittent until the next process, and this makes it possible to continuously recover the thermal energy and water gas in the steam. There is a big problem with recycling.

The present invention provides a fire extinguishing vehicle that uses the same principles of extinguishing and steam generation as the wet fire extinguishing vehicle and has a container that can continuously recover steam, thereby continuously collecting steam with little temperature difference. The purpose is to provide red-hot coke extinguishing and steam recovery equipment that can be recovered and used effectively, is not large-scale like conventional dry extinguishing equipment, and is fully applicable to existing coke ovens. There is. Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings. In FIGS. 1 and 2, the equipment for extinguishing red-hot coke and recovering steam according to the present invention includes a drop frame type truck 2 running on a fire extinguishing vehicle rail 1; , a container 3 that can be freely loaded on the trolley 2, and a fire extinguishing and steam recovery device 4 arranged on the side of the fire truck rail 1.

The inside of the container 3 is partitioned into a large number of sections by partitions 9 so that the red hot coke 8 extruded from the coke oven 6 by the extruder 5 and guided by the guide wheel 7 can be divided and stored in multiple sections. , and is a fireproof box provided with a grate floor 10 at the bottom of each compartment that allows gas and liquid to freely pass through, but prevents the passage of coke to be extinguished (Figs. 3 and 4). reference).

The grate floor 10 can be opened and closed as shown in FIG. 5 or 6 so that the red-hot coke 8 in the container 3 can be discharged at once after being extinguished.
The trolley 2 that carries the container 3 and constitutes a fire extinguisher is self-propelled and includes a mounting support structure (not shown) that allows the container 3 to be freely removed.

The extinguishing and steam recovery device 4 shown in FIG. 7 sequentially extinguishes the red-hot coke 8 that is transferred from the trolley 2 by a sub-storage facility (not shown) and stored separately in each section 1 to V of the set container 3. It is now possible to do so.

In the case of the embodiment shown in FIGS. 3 and 4, the lower lid 1 is dropped onto the upper part of the compartment to be extinguished and becomes airtight from the outside air.
2, and the inside of the upper lid 11 is connected to a water supply pipe 14 that supplies fire extinguishing water 13 from the outside, and is provided with a spray nozzle 15 having a plurality of openings. It is a one-cover type.

In this embodiment, the lower lid 12 can be connected to a steam recycling facility (not shown) via a duct 16 and a dust collection facility (not shown) so that steam generated during fire extinguishing can be recovered and reused. . In the case of such a partial cover type, the fire extinguishing and steam recovery device 4 is fixed and the container 3 is moved to extinguish the fire in each section as shown in FIG. 7, or as shown in FIG. Similarly, by moving the recovery device 4 itself relative to the container 3, it is also possible to extinguish the fire in each section. The embodiments shown in FIGS. 9 and 10 have the same feature that each section is covered, but differ in that all the sections are covered by one upper lid 11'.

That is, in this embodiment, when the upper lid 11' and the lower lid 12' are brought into close contact with the upper and lower parts of the container 3, respectively, each compartment is made airtight not only from the outside air but also from the adjacent compartment. The interior of the upper lid 11' is partitioned into water supply pipes 14 and gate valves 17 inside each compartment of the upper lid 11'.
A spray nozzle 15 is provided which is connected via a spray nozzle 15 . Further, as shown in FIG. 11, each compartment of the lower lid 12' is connected to the duct 16 below via a check valve 18 that opens in the discharge direction due to steam pressure, and is stored separately in each compartment of the container 3. When red-hot coke 8 is extinguished one after another by operating each switching valve 17, the steam generated therein is continuously guided. With the above configuration, in order to receive the red hot coke 8 pushed out from the coke oven into the container 3 on the trolley 2, the trolley 2 is moved at a slow speed during extrusion, which is done in the past.
The red hot coke 8 is evenly divided and stored in each of the compartments 1 to V.

At this time, gas or dust generated by the falling red-hot coke is collected by the dust collection equipment through the hood of the guide car that covers the top of the container 3, as in the conventional case. container 3
To use the extinguishing and steam recovery device 4 to extinguish the red-hot coke 8 in the container, first the compartment 1 of the container 3 is sealed with the upper lid 11 and the lower lid 12, and the spray nozzle 15 is used to When water is injected into the red-hot coke 8, the red-hot coke 8 is extinguished by the mixture of water and steam that flows through the coke from top to bottom due to the pressure of the superheated steam generated there, and the superheated steam that has passed through the grate bed 10 is extinguished. is led to a steam reuse facility (not shown) via the lower lid 12, duct 16, etc.

This extinguishing and steam recovery method is carried out by sequentially moving the container 3 or the fire extinguishing and steam recovery device 4 from the first section 1 to the last section V of the container 3. The generation of steam and the change in steam temperature in this case are
As shown in the figure, steam generation becomes more continuous than in the conventional method shown in FIG. On the other hand, Figures 9 and 10
When the extinguishing and steam recovery device 4' is used to extinguish the red-hot coke 8 in the container 3 as in the embodiment shown in the figure, first, each section of the container 3 is separated into the upper lid 11' and the lower lid 1.
2', the fire extinguishing and steam recovery is carried out in the same way as in the previous case using the fire extinguishing and steam recovery device 4 by sealing off from the outside air and adjacent compartments and then sequentially spraying each compartment 1 to V with water using the sluice valve 17. However, the steam generation can be made more continuous as shown in FIG. 14 than in the previous case.

Furthermore, if two or more such fire extinguishing and steam recovery devices 4 and 4' are installed, it is possible to perform ideal steam recovery that is more continuous than the one shown in Fig. 14 and has little difference in steam temperature. . The present invention has the above configuration and has the following effects.

1. By equipping a fire extinguishing truck with a container that can be loaded freely on a trolley and whose interior is partitioned into multiple compartments, extinguishing the red-hot coke inside the container can be carried out in each compartment in turn. I can do it.

Therefore, the steam generated when extinguishing a fire can also be generated one after another, making it possible to continuously collect steam with little temperature difference.

This makes it possible to easily apply steam reuse equipment such as waste heat boilers, which was previously not applicable to intermittent steam generation, and is extremely effective from an energy saving standpoint.
2 By extinguishing the fire in each of the multiple compartments, compared to extinguishing the red hot coke extruded from the coke oven all at once, it becomes possible to extinguish the coke more easily, quickly and uniformly, improving the quality of the coke. can be done.

3. The container containing red-hot coke can be loaded onto a trolley, so it can be unloaded from the trolley and used to extinguish fires.

Therefore, equipment such as trolleys and fire truck tracks can be used effectively. 4. Fire extinguishing coke does not have a large ash content unlike dry fire extinguishing equipment, and it also contains an appropriate amount of moisture so there are no problems with scattering, so it is effective from the standpoint of preventing air pollution.

Furthermore, the equipment is not as large-scale as conventional dry fire extinguishing equipment, and can be fully applied to existing furnaces.

[Brief explanation of the drawing]

FIG. 1 is a sectional view for explaining the situation during extrusion of coke by the fire extinguishing truck according to the present invention, FIG. 2 is a perspective view of the fire extinguishing truck, and FIG.
Figure 4 is a diagram showing an outline of the partial cover type fire extinguishing and steam recovery device according to the present invention, Figures 5 and 6 are diagrams showing the opening/closing mechanism of the grate floor, and Figures 7 and 8 are partial cover type FIG. 9 is a plan view showing two usage modes of the fire extinguishing and steam recovery device;
Figures 10 and 11 are diagrams showing an outline of the entire cover type fire extinguishing and steam recovery device according to the present invention, Figure 12 is a chart showing steam generation and steam temperature changes according to the secondary fire extinguishing method, and Figure 13. and FIG. 14 are diagrams showing steam generation and changes in steam temperature according to the present invention. 1. ... Fire truck rail, 2... Trolley, 3... Container, 4... Fire extinguishing and steam recovery device, 5... Extruder,
6... Coke oven, 7... Guide wheel, 8... Red-hot coke, 9... Partition, 10... Grate floor, 11, 1
1'... Upper lid, 12, 12'... Lower lid, 13... Fire extinguishing water, 14... Water supply pipe, 15... Spray nozzle, 16.
...Duct, 17...Gate valve, 18...Check valve. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14

Claims (1)

[Claims] 1. A fireproof box sufficient to receive red-hot coke extruded from a coke oven and a trolley running on fire extinguisher rails, the interior of which is partitioned two-dimensionally into multiple compartments so that it can be loaded onto the trolley. A fire extinguisher is equipped with a fire extinguisher having a container, and a steam recovery device, which has a spray nozzle in the upper part of the container and a steam recovery duct in the lower part, sprays water into the container one after another in each compartment. Red-hot coke extinguishing and steam recovery equipment characterized by being configured so that steam with little temperature difference can be recovered continuously.