JPS6234978Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coke cutting device in a coke dry extinguishing system, and more particularly to a coke cutting device in a coke dry extinguishing system that can selectively cut out only coke that has been completely cooled.

Coke dry extinguishing equipment is constructed so that red-hot coke is transported from the top of the cooling tower in buckets into the tower, cooled by cooling gas, and then discharged from the cutting gate at the bottom. Incidentally, the particle size distribution of the coke charged from the charging bucket within the column is not uniform and is segregated. This particle size segregation causes uneven flow in the cooling gas flow, so the degree of cooling of the coke is not necessarily as uniform as desired. For this reason, conventionally, a plurality of outlets were provided at the bottom of the cooling tower, and coke was sequentially discharged from the plurality of outlets.

However, since the coke was periodically and sequentially cut out from the cutting port, the coke was cut out regardless of whether or not it had been sufficiently cooled. Therefore, insufficiently cooled coke may be discharged from the cutting port, and in this case, there is a drawback that the belt of the conveyor provided below the cutting port may be burned out.

The present invention was developed in view of the above circumstances, and its purpose is to effectively prevent burnout of the conveyor belt and to increase cooling efficiency as much as possible by discharging only sufficiently cooled coke from the cutting port. An object of the present invention is to provide a cutting device for coke dry extinguishing equipment, which improves the reliability and safety of the equipment and allows the equipment to be made smaller.

According to the present invention, the above object is achieved as follows. That is, a plurality of cutting ports are provided along the circumferential direction at the bottom of the cooling tower to cut out the cooled coke, and a plurality of cutting ports are provided in each of these cutting ports and can discharge coke from the cutting ports as the cooling tower operates. a beam disposed to cross over each of the cutting ports, and a beam installed on one side of the beam facing directly below the cutting port for detecting the temperature of the coke passing through the gate. and a temperature sensor, and when the coke temperature after cooling detected by the temperature sensor falls below a predetermined upper temperature limit, the cut-out gate is operated to discharge coke from the cut-out port. It is something. Thus, only coke that has been sufficiently cooled is discharged from the outlet corresponding to the coke position, and coke that has not been sufficiently cooled remains in the cooling tower until it is sufficiently cooled.

Hereinafter, a preferred embodiment of the cutting device according to the present invention will be described based on the accompanying drawings.

As shown in Fig. 1, reference numeral 1 denotes a cooling tower, which cuts out coke from a cutting port 2 at the bottom of the tower to form a downward moving layer of coke in the tower, and also injects cooling gas G from an inlet 3 at the bottom of the tower. The structure is such that the coke is blown in countercurrent to the moving bed, cooled, and discharged onto the belt conveyor 4. As shown in FIG. 2, a plurality of cutting ports 2 (four in the illustrated example) are provided along the circumferential direction at the bottom of the column 1, and coke can be discharged from each of the cutting ports 2a, 2b, 2c, and 2d. It's becoming like that. As shown in FIGS. 1 and 3, each cutout port 2 is provided with a cutout gate 5, which opens and closes each cutout port 2a, 2b in accordance with the operation of each cutout valve 5a, 5b. There is.

A cutting port 2 in which such a cutting gate 5 is interposed
and the above-mentioned blowing port 3, each cutting port 2a, 2b,
A plurality of beams 6a and 6b (two beams in the example shown in FIG. 2) are installed so as to cross over the beams 2c and 2d.
The beams 6 are horizontal and run together over the center of the cutting opening 2. At a location on one side of the beams 6a, 6b directly below each of the cutting ports 2a, 2b, 2c, and 2d, the temperature of the cooled coke passing through the beam 6 toward the cutting port 2 is detected. Temperature sensors 7a, 7b, 7c, and 7d are attached for this purpose. As shown in FIG. 3, the output signal of each temperature sensor 7a, 7b is
The signals are sent to control devices 8a and 8b that respectively control the operation of the cutting gates 5a and 5b corresponding to the locations where the gates a and 7b are attached.
When the coke temperature detected by the temperature sensor 7 falls below a predetermined upper temperature limit, the control device 8 controls the
It is configured to have a function of opening the cutting gate 5 and, conversely, shutting off the cutting gate 5 when the coke temperature detected by the temperature sensor 7 exceeds a predetermined upper temperature limit. .

Next, the operation of the device of the present invention having the above configuration will be explained.

If the coke temperature flowing down to the cutting port 2 is not sufficiently cooled due to particle size segregation and exceeds a predetermined upper limit of cooling temperature, this temperature is detected by the temperature sensor 7 and the control device 8 The cutting gate 5 corresponding to the temperature sensor 7 is closed by the action of the temperature sensor 7. As a result, the coke in the column 1 is removed from the cutting port 2.
It remains in the tower without being discharged, and is subsequently cooled by contact with cooling gas.

When the coke is sufficiently cooled by the cooling gas and falls below a predetermined cooling temperature upper limit value, this temperature is detected by the temperature sensor 7, and the control device 8 controls the cutting temperature to be cut in accordance with the temperature sensor 7. Gate 5 is opened. As a result, the coke corresponding to the cutout port 2 in the column 1 is discharged from the cutout port 2,
It falls onto belt conveyor 4.

Therefore, insufficiently cooled coke is not discharged, and only sufficiently cooled coke is discharged from the corresponding cutting port 2, so that burnout of the conveyor belt 4 can be effectively avoided. On the other hand, since insufficiently cooled coke remains in the tower 1 and is continuously cooled, the sensible heat of the red-hot coke can be effectively recovered. In particular, the temperature sensor 7 is arranged not on the inner wall of the tower or the blast head 9, but between the inlet 3 and the cutting port 2, and the overhanging beam 6
By installing it directly above the upper cutting port 2, it is possible to know the coke temperature after cooling, and it is also possible to detect the coke temperature in the center of the cutting port 2, which is said to be relatively high temperature, so it is possible to completely remove coke. can be cooled to Further, since the cutting ports 2a and 2b are controlled individually, uniform cooling is possible, and heat recovery can also be made uniform.

In this way, it is possible to preferentially cut out the coke in the area where cooling has been completed, so by knowing the limit of the set temperature, the cooling efficiency in the tower 1 can be further improved, leading to improved productivity. At the same time, it is possible to downsize the equipment.

In short, according to the present invention, the following excellent effects can be achieved.

(1) Even if coke is not cooled uniformly in the tower, only completely cooled coke can be discharged from the cutting port, effectively preventing belt conveyor belt burnout. Safety can be ensured.

(2) Insufficiently cooled coke is kept in the tower and continues to be cooled, increasing the efficiency of heat recovery and making the equipment more reliable and more compact.

(3) Since coke can be cut out preferentially from areas where cooling has been completed, by knowing the set temperature, cooling efficiency can be improved and productivity can be improved.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the present invention, in which Fig. 1 is a schematic explanatory diagram of a cutting device in a coke dry extinguishing equipment, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a It is an enlarged view of the main part of the figure. In the figure, 1 is a cooling tower, 2 is a cutting port, 5 is a cutting gate, 6 is a beam, 7 is a temperature sensor, and 8 is a control device.

Claims (1)

[Scope of utility model registration request] A plurality of cutting ports are provided along the circumferential direction at the bottom of the cooling tower to cut out coke after cooling, and a cutting port is provided in each of these cutting ports and can discharge coke from the cutting ports when the cooling tower operates. an exit gate, a beam disposed to cross over each of the cutting ports, and a temperature sensor attached to one side of the beam facing directly below the cutting port for detecting the temperature of the coke passing therethrough. and when the coke temperature after cooling detected by the temperature sensor falls below a predetermined temperature upper limit, the cut-out gate is operated to discharge the coke from the cut-out port. Features: Coke cutting device in coke dry extinguishing equipment.