JPH0726104B2 - Wet fire extinguishing equipment in coke oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to wet extinguishing in a coke oven in which red hot coke discharged from a coke oven is extinguished by spraying it in a fire extinguisher tower equipped with a sprinkler. Regarding equipment.

(Prior art) Generally, in a coke oven, the red hot coke that has been dry-stored in the carbonization chamber is extruded by an extruder through a coke guide car to a fire engine, and the fire car is run while the red hot coke is loaded in a wet fire extinguishing facility. The fire extinguishing tower is moved to a certain extinguishing tower, and a large amount of water is sprinkled at once by a sprinkling device provided in the extinguishing tower to extinguish the red hot coke received in the extinguishing vehicle in a short time.

When spraying and extinguishing red hot coke, a large amount of steam containing high-temperature exhaust gas is generated. The amount of steam is about 30% of the sprinkling amount
Then, the fire tower suddenly rises and is ejected to the outside. The steam causes corrosion of surrounding equipment and deterioration of the surrounding scenery.

In order to suppress the jetting of such a large amount of steam, various measures have been conventionally taken as shown in Japanese Utility Model Publication No. 58-15809.

In addition, as a main purpose to recover the heat of a large amount of steam generated when the red hot coke is extinguished by spraying water, secondarily to reduce the amount of white smoke and high-temperature exhaust gas emitted into the atmosphere, Japanese Patent Publication No. 59-59. There are several types, as shown in Japanese Patent Publication No. -21355, Japanese Patent Publication No. 60-2345, Japanese Patent Publication No. 60-32666, and Japanese Patent Publication No. 62-41553.

(Problems to be solved by the invention) By the way, in the above-described various types of conventional wet fire extinguishing equipment for coke ovens, in any case, a fire extinguisher loaded with red hot coke is moved directly into the fire extinguisher tower, Since it is a method of extinguishing red hot coke by sprinkling water directly from above, a large entrance for the fire extinguisher is required in the fire extinguisher tower, and even if it is partitioned by a curtain, etc., the coke sprinkling extinguisher inside the fire extinguisher tower is completely sealed. Cannot be in a state. For this reason, even if various measures are taken as described in the above-mentioned publications, there is a problem that a considerable amount of steam leaks out and the surrounding facilities and the scenery are deteriorated, although the facility cost increases. .

Further, as described above, the fire extinguishing vehicle travels inside the fire extinguisher with the red hot coke extruded from the coke oven loaded and stays in the extinguishing tower until the completion of water spray extinguishing The traveling cycle time of the fire extinguisher vehicle is long because the fire extinguished coke is discharged by traveling to the coke unloading location. Furthermore, since the work of pushing out the red hot coke from each carbonization chamber of the coke oven must be maintained at sufficient intervals in accordance with the operation cycle of the fire extinguisher, there was a problem that the coke oven operating time was correspondingly long.

On the other hand, in order to shorten the operation cycle time of the fire extinguisher, there is no choice but to shorten the time of staying in the fire extinguisher. For this reason, it is necessary to spray a large amount of water at once and extinguish the fire in a short time because the fire extinguishing time of the red hot coke cannot be taken sufficiently. However, there was a problem that this would lead to worsening of the equipment and the equipment would have to be upsized.

The present invention has been made in view of the above circumstances, it is possible to reliably remove the steam generated when spraying the red-hot coke in the fire extinguisher without leaking to the outside, and it is possible to prevent corrosion of surrounding equipment and deterioration of the landscape, and Sprinkle fire of red-hot coke in the fire extinguisher tower, while significantly shortening the operating cycle time of the coke carrier for loading and unloading red-hot coke and extinguished coke (previously known as a fire extinguisher). It is possible to shorten the operation time of the coke oven, and at the same time,
It is an object of the present invention to provide a wet fire extinguishing equipment in a coke oven, which enables downsizing of the equipment and further diversion of existing equipment to reduce equipment cost and operating cost.

[Structure of Invention]

(Means for Solving the Problem) In order to achieve the above object, the wet fire extinguishing equipment in the coke oven of the present invention has a fire extinguisher tower having a closed structure having an opening / closing shutter, and a plurality of fire extinguishing baskets are provided in the fire extinguisher tower. , When these shutters are opened, they receive red-hot coke from a coke carrier and are circulated in the shutter closed state while being subjected to a water spray extinguishing action by the water sprinkling device, and the extinguished coke outside the fire extinguisher tower when the next shutter is opened. It is characterized in that it is provided with a steam treatment device for sucking out and removing the steam generated at the time of spray extinguishing of the red hot coke from the inside of the fire extinguisher in the closed state while providing the discharging cycle operation sequentially. .

(Operation) With the above-described configuration, in the wet fire extinguishing equipment in the coke oven of the present invention, the red hot coke extruded from the coke oven is conveyed to the fire extinguisher tower by a coke carrier, and is received by the fire extinguisher basket in the fire extinguisher tower. By closing the open / close shutter in this state, the fire extinguishing tower will be closed and the red hot coke in the fire extinguisher basket will be sprayed to extinguish the fire.Therefore, a large amount of steam generated during the extinguishing will not leak to the outside, The treatment device can be surely suctioned to the treatment device for removal treatment, and the problem of corrosion of surrounding equipment and deterioration of the landscape can be solved.

In addition, the above-mentioned fire extinguisher basket is provided so as to be circulated in the fire extinguisher tower, and the red hot coke is transferred to one of the empty fire extinguisher baskets. It is not necessary to stop until the sprinkling and extinguishing of coke is completed.For example, you can receive extinguished coke from a previous extinguisher basket that has been sprinkled and extinguish, and you can quickly return to it by traveling to a designated discharge point. The coke carrier will be a vehicle exclusively for transporting red-hot coke and extinguished coke, and the time required to stop in the fire extinguisher tower is no longer required as in the past, and the operating cycle time is greatly shortened, which is effective for shortening the coke oven operation time. Become.
Moreover, regardless of the time when the coke carrier is stopped in the fire extinguisher, it is possible to take a long time to spray the red hot coke received in the fire extinguishing basket in the fire extinguishing tower.
With this, it is possible to spray a large amount of water over a short period of time without spraying it all at once, which reduces the risk of leakage to the outside and reduces the risk of leakage to the outside. It is easy to operate the steam processing device that draws out from the tower and removes it, and downsizing is possible, so that the facility cost and the operating cost can be reduced.

Furthermore, the existing fire extinguisher car can be used for the coke carrier, and the fire extinguisher tower can also be used by slightly modifying the existing one.
Equipment costs will be lower. Further, as described above, the steam can be suction-conducted into the steam processing device without leaking the steam from the inside of the fire extinguisher to the outside, which is also effective in efficiently collecting energy such as heat of the steam.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a coke carrier and 2 is a fire tower. The coke carrier 1 has a dumping function (a mechanism for sliding a load from the bottom side) like a conventional fire extinguisher, and is mounted on a rail 3 attached to one side of a coke oven (not shown) along the furnace row. It is installed so that it can run and move, receives red hot coke A that is pushed out from a coke oven via a coke guide car, and conveys it to the fire extinguisher tower 2, or conveys extinguished coke from the fire extinguisher tower 2 to a predetermined coke discharge location. It is something to do.

On the other hand, the fire-extinguishing tower 2 has a large box-like hermetically-sealed structure that is erected near one side of the rail 3, and the front side (the rail 3 side) wall portion is arranged in two steps, and the coke is carried in. The outlets 4 and 5 are formed, and the vertical moving type open / close shutters are provided outside the upper and lower coke loading / outlets 4 and 5, respectively.
6 and 7 are provided so that the coke loading / unloading ports 4 and 5 can be opened or completely closed by vertically moving them by electric or hydraulic driving means (not shown). Has become. The coke inlet 4 at the lower stage has a coke guide chute 4a at the lower edge of the fire extinguisher 2 from the outside to the inside, and the coke outlet 5 at the upper stage has the inside of the fire extinguisher 2 at the lower edge. The coke guide chute 5a is provided in a state of descending obliquely from the outside.

A rotary circulation device having a plurality of fire extinguishing baskets 8 is provided in the fire extinguishing tower 2. That is, a pair of left and right large sprockets 9 and 10 are axially supported inside the fire extinguisher 2, and endless chains 11 are respectively wound around the left and right upper and lower sprockets 9 and 10, and the left and right endless chains 11 are mutually connected. The fire extinguishing baskets 8 are attached in a state of being horizontally mounted via shaft pins 12 therebetween. Then, by rotating the upper left and right sprockets 10 by an electric motor (not shown), the left and right endless chains 11 interlocking with the left and right fire extinguishing baskets 8 circulate in the up and down direction inside the fire extinguishing tower 2 while maintaining the upward posture. It is designed to move. The fire extinguishing baskets 8 are installed between the pair of left and right endless chains 11 so as to be arranged at symmetrical positions in the circulation path. In this way, the rotary circulation device having the two fire extinguishing baskets 8 is arranged side by side as shown in FIG.
A fire extinguisher basket 8 is provided. Further, the fire extinguishing tower 2 is provided with a damping drive mechanism (not shown) for performing a dumping operation (tilting for unloading) of the fire extinguishing basket 8 that has moved to a position near the upper coke discharge port 5. There is.

A water sprinkling device 13 is provided near the upper rear side of the fire extinguisher 2, and a collection and suction port 14 is provided so as to project immediately above it.

On the other hand, a steam processing device is separately installed to suck out a large amount of steam, including high-temperature exhaust gas generated when the red hot coke is sprayed and extinguished from the closed fire extinguishing tower 2, through a collection suction port 14 to remove the steam. . This steam processing apparatus is, for example, a combination of a cooling and washing tower 15 generally called a scrubber and a hydrostatic wet type washing machine 16 called a rotocron installed in front and back. Cooling and washing tower in the previous stage
15 is for the purpose of reducing the gas temperature as a pretreatment to expand the vapor particle size, and is provided with a sprinkler 17 having cooling water sprinkling nozzles 17a arranged in multiple stages in a tower with a closed structure. A gas introduction port 19 connected to the collection and suction port 14 of the fire extinguisher 2 through a connection duct 18 is provided at the lower part of one side, and a steam outlet port 20 is provided at the upper part of the other side. The wet washing machine 16 is as shown in Japanese Utility Model Publication No. 55-30583, and has a steam inlet 21 connected to a steam outlet 20 of the cooling and washing tower 15 through a connecting duct 21 at the center of the main body. And an air outlet 22 on the upper stage, and a pair of upper and lower S in the main body.
The character-shaped impellers 23 and 24 are symmetrically arranged and fixed, and the cleaning water is stored at the inner bottom of the main body while maintaining a constant water level. It is passed between the S-shaped impellers 23, 24 at a high speed from the lower end side to the upper end side, the cleaning water at the bottom of the main body is drawn into the steam gas flow, and the high-temperature exhaust gas is generated by stirring and mixing with the cleaning water. It collects and removes steam. As for the washing water in the wet washing machine 16, the sprinkling water of the cooling washing tower 15 at the preceding stage is used by being conducted from the bottom through the pipe 25. Further, the air cleaned by the wet cleaning machine 16 is discharged from the upper outlet 22 through the suction blower 26 into the atmosphere from the exhaust pipe 27.

Then, the operation of the wet fire extinguishing equipment in the coke oven having the above-mentioned structure will be described. First, as the coke oven is operated, the red hot coke A that is sequentially extruded from each of the carbonization chambers is received by the coke carrier 1 via the guide car as in the conventional fire extinguisher.
As it is, it travels on the rail 3 and is transported to a predetermined position on the front surface of the fire extinguisher 2 and stopped. At this time, the fire extinguishing basket 8 in the fire extinguishing tower 2 is positioned on the lower front side on the one side and the upper rear side on the other side as shown in FIG. 1, and the upper and lower open / close shutters 5 and 6 are respectively pulled up to a standby state. Is in a state. In this state, the coke carrier 1 causes a dumping operation to throw in the red hot coke A from the carry-in port 4 through the coke guide chute 4a into the empty fire extinguishing basket 8 as shown by the arrow. Then, the coke carrier 1
Stays there for a while, and the rotating circulation device works during that time to rotate the sprockets 9 and 10 about half a turn, so that the fire extinguishing basket 8 that has received the red hot coke A leads the lower rear part. The other fire extinguishing basket 8 is moved to the upper front side. Now, the other fire extinguishing basket 8 preceding it comes to the discharge port 5 in the open state, where it is tilted by the damping drive mechanism, and the already extinguished fired coke in the inside is discharged from the discharge port 5 to the coke guide chute 5a. And is received by the waiting coke carrier 1.

With this, the coke carrier 1 does not stay in the fire tower 2 for a long time, and in about 90 seconds after the first arrival there, the fired coke is completely received, and then it travels on the rail 3. Go to a predetermined coke discharge location, unload the extinguished coke there, and return with sufficient time to prepare for the pushing of the red hot coke from the next carbonization chamber.

On the other hand, in the fire extinguisher 2, immediately after discharging the previously extinguished coke to the coke carrier 1 as described above, the upper and lower open / close shutters 6 and 7 are immediately closed to completely close the loading / unloading ports 4 and 5, 2 is sealed. In this state, the rotary circulation device works to move one of the fire extinguishing baskets 8 that has received the red hot coke A from the lower rear part to the upper part, and the other empty fire extinguishing basket 8 that precedes it from the upper part of the front part to the lower part and again Simultaneously with the state shown in the figure, the water sprinkling device 13 operates to sprinkle water on the one extinguishing basket 8 from directly above to extinguish the red hot coke therein. At this time, the sprinkling and extinguishing of the water is extinguished by spending as much as two hundred and several tens of seconds without sprinkling a large amount of water all at once considering the restraint time of the fire extinguisher. In addition, a large amount of steam including high-temperature exhaust gas generated by the water spray extinguishing does not leak to the outside from the closed fire extinguishing tower 2.
From the inside of the fire extinguisher 2 to the connection duct from the upper collection and suction port 14
It is suction-conducted via 18 to the cooling and washing tower 15 in the preceding stage of the steam processing apparatus. Therefore, as pretreatment, it receives water sprinkling from the cooling water sprinkling nozzles 17a arranged in multiple stages of the water sprinkling device 17, the steam is cooled and the temperature is lowered and the steam particle size is expanded, and part of the steam falls with the cooling water. It is collected and removed. The steam pretreated in this way is then sucked into the subsequent wet washing machine 16, where it draws the washing water from the lower end toward the upper end at high speed between the left and right S-shaped impellers 23, 24. While passing through, it is cooled again by stirring and mixing with the wash water, and is surely collected and removed. As a result, the purified air is released from the suction blower 26 into the atmosphere via the exhaust pipe 27, and corrosion of surrounding equipment and deterioration of the landscape are eliminated.

In addition, after the extinguishing of the red hot coke with water is completed, the fire extinguisher tower 2
The internal rotary circulation device remains in the state position shown in FIG. 1 as it is, and when almost all the vapor in the fire extinguishing tower 2 is sucked and conducted to the vapor treatment device, the upper and lower open / close shutters 6 and 7 are pulled up and carried in. -Open the outlets 4 and 5, then wait for the arrival of the coke carrier 1 that receives and carries the red-hot coke from the coke oven. In this way, the fire extinguishing of the red hot coke is repeated one after another, and the vapor generated at that time is collected and removed.

The steam treatment device fully operates the sprinkler device 17 and the suction blower 26 so that a large amount of steam can be suctioned and treated while the red hot coke is sprayed and extinguished in the fire extinguisher 2, but at other times. Since the amount of generated steam is small, the amount of water to be sucked is reduced by reducing the amount of water sprinkled by the water sprinkling device 17 and reducing the rotation speed of the suction blower 26.

In the case of the wet fire extinguishing equipment in the coke oven of the present invention, the red hot coke A is fed from the coke carrier 1 to the fire extinguisher 2
Since the fire extinguishing basket 8 is received, the open / close shutters 6 and 7 are closed and the fire extinguishing tower 2 is closed to spray and extinguish the red hot coke, a large amount of steam generated during the extinguishing does not leak to the outside. From the inside of the fire extinguisher 2, suction is conducted to the steam treatment device for reliable removal treatment, and corrosion of surrounding equipment and deterioration of the landscape can be prevented. In particular, it becomes possible to prevent corrosion of peripheral equipment of the coke oven due to exposure to water vapor.

Further, the fire extinguisher basket 8 is provided in the fire extinguisher 2 so as to be circulated in plural circulations, and the coke carrier 1 in which red hot coke is transferred to one of the empty fire extinguishing baskets 2 is installed in the fire extinguisher like a conventional fire extinguisher. Since it is not necessary to stop until the sprinkling and extinguishing of the red hot coke is completed, it is possible to return by receiving the extinguished coke from the preceding extinguisher basket that has already been sprinkled and traveling to the designated discharge point quickly. , The coke carrier 1 will be a vehicle for transporting red-hot coke and fire-extinguished coke, and the operation cycle time will be greatly shortened because the time required to stop in the fire extinguisher tower as before is not required, and the coke oven operation time will be shortened. Will be effective.
In addition, regardless of the time when the coke carrier is stopped in the fire extinguisher 2, the spraying and extinguishing time of the red hot coke received in the fire extinguishing basket 8 can be taken sufficiently long in the fire extinguishing tower 2, so that a large amount of water can be consumed as in the conventional case. It is possible to sprinkle water over a short period of time without sprinkling it all at once, and as a result, there is less concern about leakage of steam to the outside, and the steam is sucked out from the fire extinguisher tower and removed. The steam processing device can be operated easily and can be downsized, and the facility cost and the operating cost can be reduced.

Further, the existing fire extinguisher vehicle can be used as it is as the coke carrier 1, and the fire extinguisher 2 can also be used by slightly modifying the existing one.

〔The invention's effect〕

The present invention is configured as described above, it is possible to extinguish the red hot coke conveyed from the coke oven in a fire extinguisher having a closed structure, and to reliably collect and remove the steam generated at that time without leaking to the outside, It is possible to prevent corrosion of surrounding equipment and deterioration of the landscape. In addition, the operating cycle time of the coke carrier for loading and unloading red hot coke and extinguished coke (formerly known as a fire extinguisher) was significantly increased, while allowing sufficient time for spraying and extinguishing red hot coke in the fire extinguisher tower. It can be shortened, it is effective for shortening the coke oven operation time, the equipment can be downsized, and the existing equipment can be reused.
The effect that the equipment cost and the operating cost can be reduced can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing an arrangement state of fire extinguishing baskets in a fire extinguishing tower in the embodiment. A: Red-hot coke, 1 ... Coke carrier, 2 ... Fire extinguisher, 6,7 ... Open / close shutter, 8 ... Fire extinguisher basket, 1
3 ... Sprinkler, 15,16 ... Steam processing device (15 ... Cooling and washing tower, 16 ... Wet washing machine).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaki Sano 1-2-6 Dojimahama, Kita-ku, Osaka-shi, Osaka Shinwa Tech Co., Ltd. Osaka Branch (56) References: 52-21136 (JP, U) )

Claims (1)

[Claims] 1. A wet fire extinguishing facility in a coke oven for sprinkling and extinguishing red hot coke discharged from a coke oven in a fire extinguisher tower equipped with a water sprinkler, wherein the fire extinguisher tower has a closed structure having an opening / closing shutter, and the extinguishing fire is provided. A plurality of fire extinguishing baskets are received in the tower, which receive red hot coke from the coke carrier when the shutter is opened and circulate while the shutter is closed, and are subjected to a water spray extinguishing action by the water sprinkler and the extinguished coke is next. Provided in such a state that the cycle operation of discharging outside the fire extinguishing tower is sequentially performed when the shutter is opened, while a steam processing device for sucking out and removing the steam generated at the time of spraying extinguishing red hot coke from the closed extinguishing tower is provided. Wet fire extinguishing equipment in a coke oven characterized by being configured as follows.