JPH0734068A - Gas flow controller of regenerator of coke oven - Google Patents

Abstract

PURPOSE:To provide the subject device capable of readily controlling gas flow going to respective regenerators from a horizontal flue in a short time without generating an intense heat or without requiring a heavy work and low in initial cost, in a chamber oven type coke oven equipment in which gas is supplied according to the gun method. CONSTITUTION:A resistive unit for control of pressure, composed of a bar passing from an underground room through the bottom and extending upward and a projection attached to the top part of this bar is attached to the lower part of a communication opening for communicating a horizontal flue of a coke oven to respective regenerators parallel to the horizontal flue so as to be freely moved in the vertical direction against the communication opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas flow rate adjusting device for a heat storage chamber of a coke oven.

[0002]

2. Description of the Related Art In a chamber furnace type coke oven facility, there are two methods for supplying fuel gas and air, a gun method and an underjet method.

Of these, the former is gas 10 as shown in FIG.
Is supplied to the horizontal flue 1 from the side of the furnace, and the distribution of the gas 10 to each heat storage chamber 2 in the furnace length direction is performed in each communication hole 3 that connects the horizontal flue 1 and each heat storage chamber 2. The hole opening adjusting plate 4 is installed for each one. In the latter, the gas 10 is supplied from the bottom of the furnace through an underjet pipe (not shown). The number of underjet pipes is the same as the number of the communication holes 3, and horizontal smoke is emitted from the basement of the coke oven. It is installed up to the lower part of the communication hole 3 that connects the path 1 and each heat storage chamber 2. Gas 1 to each heat storage chamber 2 in the furnace length direction
The distribution of 0 is performed by adjusting the opening of the orifice plate provided under each underjet pipe.

The under jet method is excellent in gas dispersibility, but is disadvantageous in terms of equipment cost and maintenance. Further, although the gun system is inferior in gas distributability, it has a feature of being advantageous in terms of equipment cost and maintenance. In recent coke ovens, a gun system, which is advantageous in terms of equipment cost and maintenance, tends to be adopted as a gas supply system.

When the gas supply is of the gun type, it is necessary to provide a device capable of distributing the gas 10 from the horizontal flue 1 to each of the plurality of heat storage chambers 2 in the furnace length direction according to the flue temperature distribution. In the case of the gun system, without this mechanism, gas distribution from the horizontal flue 1 to each of the plurality of heat storage chambers 2 in the furnace length direction would be inappropriate, and the temperature distribution of the coke oven would not be preferable. As a result, the quality of coke is reduced and the amount of heat consumed by carbonization of coal is increased, which adversely affects the operation of the coke oven. Therefore, in the case of the gun system, it can be said that a gas flow rate adjusting device from the horizontal flue 1 to each heat storage chamber 2 is necessarily required.

A conventional gas flow rate adjusting device from the horizontal flue 1 to each heat storage chamber 2 is as shown in FIG. 4 and FIG. 5, and a hole opening degree is provided in a communication hole 3 connecting the horizontal flue 1 and the heat storage chamber 2. Adjusting device 4
Is installed to adjust the amount of gas entering each heat storage chamber 2 from the horizontal flue 1.

FIG. 4 shows an example of a gas flow rate adjusting device disclosed in Japanese Utility Model Laid-Open No. 52-26649. That is, FIG. 4 is a sectional view in the furnace length direction of the horizontal flue 1 and the heat storage chamber 2 of the gun-type coke oven, showing a space 6 in the communication hole 3 connecting the horizontal flue 1 and each heat storage chamber 2. It can be seen that the hole opening adjustment plate 4 is provided in the space 6 provided. As shown in FIG. 4, there are a plurality of hole opening adjustment plates 4 and one communication hole 3
One is always installed against. This hole opening adjusting plate 4 has an opening in the center, and there are about 10 types of openings having different opening sizes, which are attached to each connecting hole 3 in the furnace length direction so that the flue temperature distribution is in an ideal state. ing. Further, the hole opening adjusting plates 4 are connected by connecting bolts 7 so as to be easily taken out, and are connected in a straight line like a freight car.

The gas flow rate from the horizontal flue 1 to each heat storage chamber 2 is adjusted every time the operating rate of the coke oven changes or when the furnace temperature distribution is disturbed, and the adjustment frequency is quite high. Therefore, it is required that the gas flow rate from the horizontal flue 1 to each heat storage chamber 2 can be easily adjusted in a short time.

However, this is complicated in the conventional method,
It is a huge effort. That is, according to the conventional method, the hole opening adjustment plate 4 is provided in each communication hole 3 for adjusting the gas flow rate.
1 for each hole, and each hole opening adjustment plate 4
Are connected in a straight line with the connecting bolts 7 in the furnace length direction like a freight car, so that, for example, only one hole opening adjustment plate 4
Even when it is desired to change the opening area of the above, it is necessary to remove the connecting bolts 7 one by one and take them out of the furnace for all the hole opening adjusting plates 4 in front of them. At this time, the weight of the hole opening adjusting plate 4 is 5
There is about kg, and the temperature is 200 to 300 ° C., and the worker is required to perform high heat and heavy muscle work. Then, after adjusting the opening area of the predetermined hole opening adjusting plate 4, the taken out hole opening adjusting plate 4 is inserted again into the furnace. In this case as well, each hole opening adjusting plate 4 is connected by the connecting bolt 7. It is necessary to connect them one by one and put them in the furnace. As described above, the conventional method consumes a lot of time and labor even when it is desired to adjust the gas flow rate of the heat storage chamber 2 at only one place.

Further, the gas flow rate adjusting device of the conventional method has a disadvantage that the equipment cost is high. In the conventional method, since the space 6 in which the hole opening adjusting plate 4 is attached is provided in the communication hole 3 that connects the horizontal flue 1 and each heat storage chamber 2, the height of bricks in the entire coke oven is increased. Although the height of this space 6 is 100 mm, it is necessary to apply a lining treatment of silica stone bricks, and the height becomes substantially 300 mm. As a result, the prices of bricks and back stays, platforms, mobile machines, etc. (not shown) increase.

In addition, a brick of a new shape is required around the space 6 and an increase in equipment cost due to an increase in the number of brick types is newly generated.

As explained above, the gas flow rate adjusting mechanism using the hole opening adjusting plate 4 of the conventional method spends enormous amount of time and labor for adjusting the opening, and the operator is in a high working environment due to high heat and heavy muscle work. There is a problem that it is bad and the equipment cost is high.

[0013]

The above-mentioned prior art has the following problems.

That is, the gas flow rate adjusting mechanism using the hole opening adjusting plate 4 of the conventional method spends enormous amount of time and labor for the adjustment, and the worker is in a bad working environment because of high heat and heavy muscle work. There is a problem that the cost is high.

An object of the present invention is to adjust the gas flow rate into the heat storage chambers 2 in the furnace length direction from the horizontal flue 1 in a short time in a chamber furnace type coke oven facility in which the gas supply system is a gun system. It is to provide a device which has a good working environment and is inexpensive in equipment cost.

[0016]

That is, the device of the present invention is a gas flow rate adjusting device for a heat storage chamber of a chamber furnace type coke oven facility in which the gas supply system is a gun system, and a horizontal flue and a parallel flue At the bottom of the communication hole that connects each heat storage chamber,
A pressure adjusting resistor extending upward from the basement through the bottom is provided, and the resistor is vertically movable with respect to the communication hole.

[0017]

According to the present invention, the bar 2 extending upward from the basement 17 of the coke oven as shown in the apparatus of FIGS.
A resistor 20 having a projection 20B at the tip of 0A is provided below the communication hole 3 connecting the horizontal flue 1 and each heat storage chamber 2 in the furnace length direction, and the resistor 20 can be moved up and down. As a result, the operating rate of the coke oven changes, and even when the amount of gas entering each heat storage chamber 2 is to be adjusted, only the resistor 20 below the communication hole 3 of the heat storage chamber 2 whose gas amount is to be adjusted moves up and down. It is only necessary to adjust so that a predetermined amount of gas flows, and the amount of gas can be easily adjusted. That is, by moving the resistor 20 provided at the lower portion of the communication hole 3 downward, the distance of the communication hole 3 is increased, the gas passage resistance is reduced, and the gas 10 flows well, and conversely the resistance is increased. By moving the body 20 upward, the distance from the communication hole 3 becomes shorter, the passage resistance of the gas 10 increases, and it becomes difficult for the gas 10 to flow. As described above, according to the present invention, the gas amount can be easily adjusted only by moving the resistor 20 up and down.

In order to adjust the gas amount as in the conventional method, the hole opening adjusting plate 4 located before the hole opening adjusting plate 4 whose opening area is desired to be changed is taken out of the furnace and then put into the furnace again. Is not necessary.

Further, since the resistor 20 is provided in the horizontal flue 1, the height of the brickwork of the horizontal flue 1 does not increase, and the equipment cost can be reduced.

[0020]

The present invention will now be described in detail with reference to the embodiments shown in the drawings.

FIG. 1 is a sectional view in the furnace length direction of the coke oven when the resistor 20 of the present invention is installed in the communication hole 3, and FIG. 2 is a sectional view taken along the line AA of FIG. Further, FIG. 3 shows the resistor 2
It is drawing which shows another Example which changed the tip shape of 0.

Here, 1 is a horizontal flue of a coke oven, 2 is a heat storage chamber, 3 is a communication hole, 20 is a resistor, and 20A is a resistor 2.
A bar 0B and a bar 20B indicate a protrusion attached to the tip of the bar 20A.

As shown in FIG. 1, the gas flow rate adjusting device for the heat storage chamber 2 of the present embodiment has a bar 20A and a conical protrusion 20.
The resistor 20 is composed of B and a device that moves the resistor 20 up and down.

The bar 20A of the resistor 20 extends downward from the horizontal flue 1, penetrates through the bottom brick 11 and concrete 16 and reaches the basement 17 of the coke oven, and the handle 24 is attached to the lower part thereof. Also, the bar 20A
The screw 21 is cut from the base metal 23 and the resistor 20 moves up and down when the handle 24 is turned. Therefore, the vertical movement of the resistor 20 can be performed from the basement 17.

The protrusion 20B of the resistor 20 has a conical shape and is attached to the bar 20A. Therefore, no matter what height the resistor 20 is turned by turning the handle 24, the protrusion 20 </ b> B of the resistor 20 always has the same shape with respect to the communication hole 3.

One resistor 20 is installed under each communication hole 3 connecting the horizontal flue 1 and each heat storage chamber 2, and
The amount of gas entering each heat storage chamber 2 can be adjusted.

That is, when the gas 10 flows from the right side to the left side of the horizontal flue 1 in FIG. 1 and enters each heat storage 2 through each communication hole 3, the amount of gas entering a certain heat storage chamber 2 is planned. If it is less than the value, the resistor 20 under the communication hole 3
Is moved downward to reduce the resistance of the gas 10 passing through the communication hole 3 so that a large amount of the gas 10 enters the heat storage chamber 2. If the amount of gas entering the heat storage chamber 2 in the opposite direction is larger than the planned value, the resistor 20 is moved upward, and if the amount of gas entering the heat storage chamber 2 in the opposite direction is larger than the planned value. The resistor 20 is moved upward to increase the resistance of the gas 10 passing through the communication hole 3 to reduce the amount of the gas 10 entering the heat storage chamber 2.

As described above, in the gas flow rate adjusting device of the present invention, the gas amount can be easily adjusted only by turning the handle 24 and moving the resistor 20 up and down. Therefore, unlike the conventional method, a huge amount of labor is not required, and high heat and heavy muscle work is not required.

FIG. 3 is a view showing another embodiment in which the shape of the protrusion 20B of the resistor 20 is changed. In the embodiment of FIG. 3, the weight of the resistor 20 is reduced by using a disk shape as the protrusion. As a result, the manufacturing cost of the resistor 20 is reduced, and the operability of the vertical movement operating device is improved by reducing the weight. Although the projection has a conical shape or a disk shape here, the present invention is not limited to this.

Further, in this embodiment, the vertical movement operation is performed by the bar 2
The screw 21 is cut between the 0A and the base metal 23, and the bar 2
Although the handle 24 attached to the lower part of 0A is rotated, there is no problem even if another means is provided to enable the vertical movement operation. For example, a piston type vertical movement device is conceivable, but this type is preferable since the shape of the protrusion is not particularly limited because the resistor 20 is not rotated. That is, when the resistor 20 rotates, the shape of the protrusions is a conical shape, a columnar shape, or a disc that does not change with rotation so that the protrusions 20B always have the same shape regardless of the height level. I have to Otherwise, the resistor 20
The height level and the gas passage resistance passing through the communication hole 3 are not proportional to each other, which is not preferable. For example, in the case of a triangular pyramid shape, the triangular pyramid changes its shape with respect to the communication hole 3 with rotation, and the gas passage resistance changes regardless of the height level of the resistor 20, which is not preferable. However, when the resistor 20 does not rotate, the protrusion 20B always has the same shape with respect to the communication hole regardless of the height level thereof. Since the projections always have the same shape, the shape of the protrusion is not limited.

In the gas flow rate adjusting device for the heat storage chamber 2 of the present invention, the most important thing is prevention of gas leakage from the horizontal flue 2 to the basement 17. In this embodiment, the sealing material 22 is inserted in the upper part of the base metal fitting 23 for gas sealing.
Since the screw 21 is cut between the bar 20A and the basic metal part 23, and this part also functions as a gas seal, it can be said that the gas leakage prevention measure is sufficient.

Further, since the resistor 20 in the horizontal flue 1 is in direct contact with the gas 10, the material of the resistor 20 must be a material having corrosion resistance to the gas body. In this embodiment, stainless steel having corrosion resistance is used.

Further, in the present invention, in order to prevent water generated during the drying of the coke oven and dust generated during the operation from invading the base metal part 23, a dust intrusion prevention plate 25 is provided below the horizontal flue 1. There is. If this is not the case, water or dust generated will enter the base metal part 23 and cause corrosion, resulting in a decrease in the operability of the vertical movement operating device, which is not preferable.

As described above, the gas flow rate configuring device of the coke oven heat storage chamber 2 of the present invention can easily adjust the gas flow rate entering from the horizontal flue 1 to each heat storage chamber 2 in the furnace length direction in a short time,
The working environment is good and the equipment cost is low.

[0035]

INDUSTRIAL APPLICABILITY The present invention is placed in a chamber furnace type coke oven facility in which the gas supply system is a gun system, and is located below the connecting hole connecting the horizontal flue and each heat storage chamber in the furnace length direction, and upward from the basement. Since a resistor consisting of a bar that can be extended and vertically moved and a protrusion that is attached to the tip of the bar is provided and the resistor is moved up and down with respect to the communication hole to adjust the gas flow rate, the gas entering each heat storage chamber The flow rate can be easily adjusted in a short time, and the work place is the basement of the coke oven, so there is no need for high heat and heavy muscle work. Further, since the space is not provided in the communication hole, the height of the heat storage chamber does not become high and the increase in equipment cost can be avoided.

[Brief description of drawings]

FIG. 1 is a sectional view of a coke oven in the furnace length direction showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a drawing of a protrusion shape according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view in the coke oven furnace length direction showing a gas flow rate adjusting device of a conventional method.

5 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

1 ... Horizontal flue 2 ... Heat storage chamber 3 ... Communication hole 4 ... Hole opening adjustment plate 5 ... Opening 6 ... Space 7 ... Connecting bolt 8 ... Connecting plate 10 ... Gas 11 ... Furnace bottom brick 16 ... Concrete 17 ... Basement 20 ... Resistor 20A ... Resistor bar 20B ... Resistor projection 21 ... Screw 22 ... Sealing material 23 ... Basic metal 24 ... Handle 25 ... Dust intrusion prevention plate

Claims (1)

[Claims] 1. In a gas flow rate adjusting device for a heat storage chamber of a chamber furnace type coke oven facility in which a gas supply system is a gun system, a lower part of a communication hole connecting a horizontal flue and each heat storage chamber parallel to the horizontal flue. A gas flow rate adjusting device for a coke oven heat storage chamber, characterized in that a pressure adjusting resistor extending upward from the basement through the bottom is provided, and the resistor is vertically movable with respect to the communication hole.