JPS5917884Y2 - Coke charging device for coke dry fire extinguishing system - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a coke charging device for a coke dry extinguishing system for extinguishing red-hot coke discharged from a coke oven using circulating cooling gas.

In recent years, dry type fire extinguishing systems have been adopted in place of conventional wet type fire extinguishing systems as excellent coke extinguishing systems that are free from environmental pollution and can effectively utilize waste heat.

Next, an example of the above-mentioned dry fire extinguishing system will be explained with reference to the system diagram shown in FIG.

The red hot coke that has been dry distilled in the coke oven 1 is taken out from the coke oven 1 and passed through the guide wheel 2 to the coke oven 1.
The packets 5 are loaded onto a transport vehicle 4 that travels on rails 3 laid along the rails 3.

Next, the transport vehicle 4 loaded with the red hot coke moves on the rails 3, changes its direction horizontally by 90 degrees with the turntable 6, and moves toward the hoist tower 7.

Packet 5 on carrier vehicle 4 located in hoist tower 7
is a hoist 8 running high above the hoist tower 7.
, and moved directly above the fire-extinguishing furnace main body 9 , and positioned above the charging port 10 provided at the top of the fire-extinguishing furnace main body 9 .

Then, by opening the bottom of packet 5,
The red-hot coke inside is charged into the fire extinguishing furnace main body 9.

The fire extinguishing furnace main body 9 has an upper half inside a prechamber 9A,
Further, the lower half part is formed as a quenching chamber 9B, and a cutting device 11 is provided at the lower part, and the red hot coke charged into the fire extinguishing furnace main body 9 is transferred to the quenching chamber 9B.
The fire is extinguished by the cooling circulating gas blown in from the bottom of the coke conveyor 1 and is sequentially discharged from the cutting device 11.
It is designed to be taken out to 2.

As mentioned above, to extinguish the red-hot coke in the quenching chamber 9B, the cooling circulating gas (for example, a gas consisting of N2.N2.CO) that is pumped by the fan 13 is used. , enters the annular gas chamber 17 provided at the lower part of the quenching chamber 9B, and connects the sample repeater 14 and the gas chamber 1.
It enters the quench puffer fish chamber 9B through the inner slit 7, rises inside the quench puffer fish chamber 9B, comes into contact with the red-hot coke in the quench puffer fish chamber 9B, and extinguishes it.

As described above, the cooling circulating gas that has extinguished the red-hot coke in the quench puffer chamber 9B is transferred to the pre-chamber 9A.
Through a large number of slits 18 provided in the furnace inner wall at the boundary between the
After entering the annular gap 19 formed inside the peripheral wall of A, it is discharged into a duct 20 that protrudes laterally from a part of the furnace wall.

Dust removal equipment 21 provided in the system of the duct 20
After separating and removing dust etc., it reaches the waste heat boiler 22, where it exchanges heat with the water flowing in the heat exchanger group 23,
It returns to the blower 13 through the cyclones 24 and 24, is blown into the fire extinguishing furnace body 9 again, and is used for circulation.

The temperature of the cooling circulating gas is approximately 800°C in the duct)-20, and approximately 180°C near the lower end outlet of the waste heat boiler.
℃, and the water flowing through the heat exchanger 23 becomes steam, which is used in the turbine of the power generation equipment and other equipment.

In a conventional coke dry fire extinguishing system having such a structure, the charging port 10 has a conical shape that becomes larger in diameter toward the bottom, as shown in FIG. A lid (not shown) is normally attached to this charging port 10, but during charging, a hopper 26 shown in an enlarged perspective view in FIG. A water seal is installed.

When the packet 5 is placed in the charging port 10 and the bottom of the packet 5 is opened, the red-hot coke inside the packet 5 is transferred to the hopper 2.
6 into the fire extinguishing furnace body 9.

Red-hot coke that has fallen into the fire extinguishing furnace body 9 is deposited within the top wall 25 at an angle of repose of 45°, but at this time, large lumps are deposited along the peripheral wall band, and fine pieces gather in the center. .

As a result, the flow of circulating gas for cooling and extinguishing within the quenching chamber was not uniform, causing problems in extinguishing performance near the center.

Moreover, the red-hot coke within the top wall 25 is deposited at an angle of repose of 45°, which necessitates making the top wall 25 higher, leading to an increase in construction costs.

Based on the above-mentioned viewpoints, this design is a coke dry fire extinguishing system that enables even distribution of red-hot coke into the fire extinguishing furnace body and reduces construction costs by lowering the height of the top wall. A coke charging device is provided in which the top wall of the fire extinguishing furnace body is dome-shaped with a plurality of red-hot coke charging ports, and a hopper with a plurality of openings is provided in the red-hot coke charging port of the top wall. It is characterized by the fact that it is attached.

Next, the device of this invention will be explained by way of an example with reference to the drawings.

FIG. 4 shows an embodiment of the device of this invention in a vertical sectional view of the main parts.

As shown in the drawing, the fire extinguishing furnace main body 27 has a top wall 27A formed in a dome shape, and a plurality of charging ports 28 are provided in the center of the top wall 27A.

A hopper 30 having four openings 29, shown in plan view in FIG. 5 and in perspective view in FIG. 6, is attached to the charging port 28.

In the hopper 30, a small hopper section 30A forming four openings 29 is formed by providing chevron-shaped partition walls 33, 33 orthogonal to each other inside a square side wall section.

Further, a guide flange 34 is formed on the upper edge of the hopper 30 and opens diagonally outward and upward so that the packet 5 can be connected accurately.

A square frame 31 is provided at the lower edge of the small hopper section 30A forming the four openings 29, and by fitting the square frame 31 into the water groove 32 provided at the charging port 28 of the top wall 27A. , the hopper 30 is water-sealed to the charging port 28.

Since the device of this invention is constructed as described above,
The packet containing red hot coke is lowered to hopper 3.
0, open the bottom of the packet, and let the red hot coke fall.
A dispersedly falls into the respective openings 29 and is deposited in the fire extinguishing furnace main body 27.

At this time, the red hot coke deposited in the fire extinguishing furnace main body 27 is
Since it falls through the four openings 29, the large lumps and fine pieces are dispersed within the fire extinguishing furnace main body 27, and the large lumps and fine pieces do not concentrate on the peripheral wall band and the fine pieces in the center as in the conventional case.

In addition, red hot coke is distributed and deposited in four parts, so
The height of the deposition is low, and it is deposited almost along the dome-shaped top wall 27A, so the height of the top wall 27A may be low.

As explained above, according to the device of this invention, the flow of cooling circulating gas from below is made uniform, the fire extinguishing efficiency is increased, and the height of the fire extinguishing furnace body can be lowered, reducing construction costs. Many excellent effects are brought about, including the ability to reduce

[Brief explanation of the drawings] Figure 1 is a system diagram showing an example of a conventional dry fire extinguishing system;
The figure is a vertical sectional view of the upper part of the fire extinguishing furnace main body of the conventional device, FIG. 3 is a perspective view showing the hopper of the conventional device, FIG. 4 is a vertical sectional view showing the main parts of the device of this invention, and FIG. 5 is the hopper Plan, 6th
The figure is also a perspective view.

Claims (1)

[Scope of utility model registration request] In a coke dry fire extinguishing system in which a red hot coke charging port is provided in a top wall of a fire extinguishing furnace main body, the top wall of the fire extinguishing furnace main body is formed into a dome shape in which a plurality of red hot coke charging ports are provided, and the top wall A coke charging device for a coke dry extinguishing system, characterized in that a hopper having a plurality of openings is attached to a red-hot coke charging inlet.