JPS636174Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a new cutting device for coke dry cooling equipment, and in particular, to control the flow rate of cooled coke cut from the coke dry cooling equipment to a delivery system outside the system. The present invention relates to a cutting device which can be achieved by using a gate valve for cutting and which can simplify the cutting device as much as possible.

[Prior art] Generally, the cutting device of coke dry cooling equipment is
A configuration as shown in the figure is adopted.

As shown in the figure, there is a coke extraction port 2 at the bottom of the cooling tower 1, and a cutoff valve 3 is provided there. The cut-out valve 3 is a flat valve, and is configured to open and close the coke extraction port 2 by sliding in the plane direction thereof. When the cutoff valve 3 is opened, the coke 4 cooled in the cooling tower 1 is deposited in a metering hopper 5 provided downstream of the coke extraction port 2. Then, by closing the cut-out valve 3, a certain amount is cut into the metering hopper 5. An upper gate valve 6 is attached to the lower end of the weighing hopper 5 so as to be openable and closable, and an intermediate bunker 7 is connected to the downstream side of the upper gate valve 6.

This intermediate bunker 7 constitutes the most downstream side of the coke dry cooling equipment, and is configured such that the cooled coke is cut out from this intermediate bunker 7 to an external delivery system.

Therefore, a lower gate valve 8 is provided at the lower end outlet of the intermediate bunker 7 so as to be openable and closable for cutting out the cooled coke to the outside. On the downstream side of this lower gate valve 8, there is a discharge chute 9 which becomes the starting end of the discharge system.
An electric feeder 10 is attached to the lower end of the discharge chute 9, and a conveyor 11 for conveying the cooled coke to the outside of the system is connected to the discharge end thereof.

Therefore, the cooled coke 4 cut into the metering hopper 5 is deposited in the intermediate bunker 7 by opening the upper gate valve 6 with the lower gate valve 8 closed. The coke 4 deposited in the intermediate bunker 7 is discharged to a discharge chute 9 by opening the lower gate valve 8 with the upper gate valve 6 closed.

All of the coke flow up to this point is caused by the coke 4 falling under its own weight. The coke 4 flowing into and depositing in the discharge chute 9 is flow-controlled by a continuously operated electric feeder 10 and transferred to a conveyor 11.
It is evenly discharged and transported. The cooled coke cut out by the cutting device in this manner is conveyed to a usage site or a storage site via a number of downstream belt conveyors that constitute a conveyance system. For this reason, the cutting device is also required to have a condition in which the conveyor constituting the delivery system functions effectively, that is, to discharge the material uniformly.

[Problems to be solved by the invention] However, in the conventional device, the lower gate valve 8 for cutting off the cooled coke from the dry cooling equipment to the outside has a single valve body that connects the cutting opening of the intermediate bunker 7. By opening and closing the gate valve 8, a large amount of coke is discharged or cut out in batches into a discharge chute 9 on the downstream side thereof.

Therefore, the discharge chute 9 is provided with an electric feeder for uniformly discharging the coke by controlling the flow rate to the conveyor 11 which is a discharge system on the downstream side, and the coke cut out by the gate valve 8 is transferred to the discharge chute 9.
A discharge hopper is required to temporarily store and transfer the waste while controlling the flow rate and conveying it to the conveyor 11.

However, since the extrusion device of the coke dry cooling equipment is installed at the bottom of the cooling tower 1 so that the cooled coke is extruded by gravity, providing an electric feeder 10 and a discharge hopper further downstream would increase the height of the extrusion device, which would require the entire coke dry cooling equipment to be made taller, raising the problem of increased construction costs. Also, increasing the overall length of the extrusion device in the direction of gravity to repeatedly drop the coke raises the problem of increased dust generation.

[Means for Solving the Problems] Therefore, the present invention has been devised to effectively solve the problems in the conventional cutting devices of coke dry cooling equipment.

The purpose of this invention is to minimize the length of the cutting device under the cooling tower, thereby minimizing the height of the entire coke dry cooling equipment, and to reduce construction costs as much as possible. I will provide a.

Furthermore, the purpose of the present invention is to provide a cut-out device that can control the flow rate suitable for the out-of-system delivery system at the same time as cutting by providing a cut-out or discharge flow rate control function to the gate valve that carries out the cooled coke from the coke dry cooling equipment. This is what we provide.

In order to achieve the above object, the present invention is installed at the lower part of the cooling tower, and is installed under the cut-out port of the intermediate bunker for discharging the cooled coke that is measured and cut out from the weighing hopper installed at the top of the tower. , a conveyor is provided for conveying the cooled coke cut out from the system to the outside of the system, and the cutting port of the intermediate bunker is divided into a plurality of pieces along the conveying direction of the conveyor, and each of these divided cutting ports is provided with a conveyor. A gate valve is provided to open and close the gate, and the gate detects the amount of cooled coke cut out in the intermediate bunker and also detects the conveyance amount of the conveyor to set the optimum conveyance flow rate, and selectively opens and closes the gate valve. It is constructed by providing a cutting flow rate controller.

[Function] With the above configuration, the size of the cooling equipment in the height direction can be reduced by providing a conveyor below the cutting opening of the intermediate bunker for conveying the cooled coke to be cut out of the system. , it is possible to achieve equipment downsizing. In addition, the cutting opening of the intermediate bunker is divided into a plurality of pieces along the conveying direction of the conveyor, and gate valves are provided for opening and closing each of these divided cutting openings, so that the cutting opening can be divided along the conveying direction of the conveyor. cooled coke can be cut out. Further, the gate valve is provided with a cut-out flow rate controller that detects the cut-out amount of the cooled coke in the intermediate bunker and detects the conveyance amount of the conveyor to selectively open and close the gate valve as an optimum conveyance flow rate. By selectively controlling the opening and closing of each gate valve using this cutting flow rate controller, it is possible to cut the cooled coke to the conveyor at an optimum conveyance flow rate.

[Example] An example of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 2 is a schematic side sectional view showing an embodiment of the present invention, and as shown in the figure, an extraction port 2 is provided at the lower part of the cooling tower 1 of the coke dry cooling equipment, similar to that shown in FIG. This extraction port 2 is provided with a cutoff valve 3. A metering hopper 5 and an intermediate bunker 7 are provided downstream of the cut-off valve 3, and each cut-out port 12 is provided with an upper or lower gate valve 6, 8.

The present invention particularly relates to an improvement of the lower gate valve 8 for cutting off cooled coke from the coke dry cooling equipment to a discharge system outside the system.

In the embodiment shown in FIG. 3, the cutting ports 12 of the intermediate bunker 7 forming the discharge side of the coke dry cooling equipment are sequentially arranged in order along the conveying direction of the conveyor 11 provided directly below the intermediate bunker 7. It is divided into three parts: a second cutting port 12b and a third cutting port 12c.
The first cutting port 12a, the second cutting port 12a, which is divided into a plurality of
A first gate valve 8a and a second gate valve 8 are provided at the cutting port 12b and the third cutting port 12c for opening and closing, respectively.
b and a third gate valve 8c are provided.

These first gate valve 8a, second gate valve 8b,
The third gate valve 8c is provided with a valve driving means 13 for independently driving the third gate valve 8c to open and close.

These valve driving means 13 are connected to each gate valve 8a, 8.
A rotary drive shaft 14 for independently opening and closing the rotary drive shafts 14 and 8c, a drive source 15 such as a fluid cylinder or an electric motor for rotationally driving the rotary drive shaft 14, and a drive source 15 that controls the cutting flow rate. It is composed of a cutting flow rate controller 16 for adjustment.

Each gate valve 8a, 8 is attached to the rotation drive shaft 14.
A swinging arm 17 with one end supported is provided at b and 8c, and the swinging arm 17 is driven following the rotation of the rotary drive shaft 14, and the gate valves 8a, 8b, and 8c are It will open and close while seated at a distance from the exit.

Further, the cut-out flow rate controller 16 detects the cut-out amount of coke in the intermediate bunker 7, detects the amount of coke conveyed to the conveyor 11, and determines the optimum conveyance flow rate to the first, second, and third gates. Valve 8a, 8
The driving source 15 is configured to be controlled so as to selectively open and close portions b and 8c.

The operation of this embodiment having the above configuration will be described.

A conveyor 11 for conveying the cooled coke to the outside of the system is provided directly below the cutting port 12 of the intermediate bunker 7 that forms the discharge end of the cooled coke of the coke dry cooling equipment, and each divided cutting port 12a,
12b and 12c are closed by the first gate valve 8a, the second gate valve 8b, and the third gate valve 8c, respectively, when the upper gate 6 is opened, the cooled coke is metered from the metering hopper 5 into the intermediate bunker 7. Served. After the upper gate 6 is closed,
The cutout flow rate controller 16 detects the conveyance speed or conveyance amount of the conveyor 11, and selectively opens and closes the first gate valve 8a, the second gate valve 8b, and the third gate valve 8c in accordance with this conveyance amount. .

In particular, the cutting port 12 is divided along the conveyance direction of the conveyor 11, and these are divided into a first cutting port 12a, a second cutting port 12b, and a third cutting port 12c.
are the first gate valve 8a and the second gate valve 8, respectively.
(b) By being closed by the third gate valve 8c, the cooled coke in the intermediate bunker 7 behind each outlet is divided into each outlet and placed on standby. Further, the amount of cooled coke waiting behind each cutting port can be detected because the intermediate bunker 7 is inclined in the direction of gravity so that the rear end portion of the coke is sequentially depressed.

Therefore, the amount of cooled coke in the intermediate bunker 7 is detected by the cutout flow rate controller 16 according to the conveyance amount of the conveyor 11, and the first gate valve 8a or the third gate valve 8c is opened, for example, and then the third gate valve 8c is opened. By opening or selectively opening and closing the two-gate valve 8b, the cutting amount can be controlled to be optimal for the conveyance amount of the conveyor 11. As described above, since the cooled coke can be cut out to the conveyor 11 while controlling the flow rate using the gate valve, the conveyor 11 can be placed close to the cutting port 12 which is the discharge end, and the coke dry cooling equipment can be used. This means that the height can be set as low as possible.

In the illustrated example, the cutting port 12 is connected to the conveyor 1.
1 was divided into three parts along the conveyance direction, but the cutting port 12
It goes without saying that it can be divided into any number of parts depending on the size, etc. In addition, the cutting port 12 is connected to the conveyor 1 for conveyance.
Of course, the cutout port 12 may be formed as a single opening along the cutout port 1, and the cutout port 12 may be substantially divided by a gate valve divided into a plurality of parts along the cutout port 12.

In the figure, 18 is a cover member that covers the top of the conveyor 11 from the cutting opening 12 of the intermediate bunker 7.

[Effects of the Invention] In summary, the present invention provides the following excellent effects.

(1) Cooled coke can be cut out while controlling the flow rate from the coke dry cooling equipment to the transport system outside the system.

(2) In addition, the conveyor system can be installed close to the cutout of the intermediate bunker that forms the discharge end, making it possible to lower the height of the coke dry cooling equipment as much as possible and reduce construction costs. can be reduced.

(3) In particular, the height of the coke dry cooling equipment can be made as low as possible by: (a) cooling tower main body, coke bucket hoisting tower,
Construction costs and equipment costs for other equipment such as a boiler frame can be reduced.

B: Energy savings can be achieved by lowering the lifting height during coke charging.

C. By shortening the coke falling travel distance, pulverization can be prevented and the yield of coke can be improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic side sectional view showing a conventional device, FIG. 2 is a schematic side sectional view showing an embodiment of the present invention, and FIG. 3 is an enlarged schematic plan view of the main part. In the figure, 1 is a cooling tower, 5 is a weighing hopper, 7 is an intermediate bunker, 12 is a cutting port of the intermediate bunker, 8a, 8
Reference numerals b and 8c are gate valves, 13 is a valve driving means, and 16 is a cutting flow rate controller.

Claims (1)

[Scope of utility model registration request] The cooled coke cut out from the intermediate bunker is placed under the cut-out port of the intermediate bunker, which is installed at the bottom of the cooling tower and discharges the cooled coke that is measured and cut out in fixed quantities from the metering hopper installed at the top of the tower. A conveyor is provided for conveying the intermediate bunker to a conveyor, and the cutout port of the intermediate bunker is divided into a plurality of pieces along the conveyance direction of the conveyor, and a gate valve is provided for opening and closing each of these divided cutout ports, and the gate The invention is characterized by being provided with a cut-out flow rate controller that detects the cut-out amount of the cooled coke in the intermediate bunker and also detects the conveyance amount of the conveyor to set the optimum conveyance flow rate and selectively open and close a gate valve. Cutting device for coke dry cooling equipment.