KR0147742B1 - Removal device of carbon attached to carbonization chamber of coke oven - Google Patents

Abstract

The present invention relates to a carbon removal apparatus attached to a coke oven carbonization chamber, a control computer body (2) equipped with a keyboard (1) and a monitor (3) for work control and overall control of the apparatus, and an extruder rambeam in a coke oven (14). Encoder (9) and limit switch (10) for detecting the position movement and the moved position, a compressor (4) for generating air for carbon incineration, and a water remover for removing moisture from the compressed air ( 5), a compressed air storage tank (6) for storing compressed air, an air pressure regulating valve (7) for adjusting the incineration air injection pressure, a solenoid valve (8) for adjusting the flow rate of the incineration air, The upper and side injection nozzles 11 and 12 installed in the ram beam head part 15 for injecting compressed air to the ceiling and the wall of the carbon 17 to the carbonization chamber 16, and the compressed air storage tank 6 Top and side through the solenoid valve (8) for flow control Is constructed consists of a spray nozzle 11 and 12 carbon incineration air feed line (13) for guiding the compressed air.

Description

Carbon removal device attached to the coke oven carbonization chamber

1 is a configuration diagram of the carbonization chamber attached carbon removing device of the present invention

2 is a schematic view of the attachment carbon removing device of the present invention

3 is a front view showing a state in which the injection nozzle of the present invention is air-injected in the bullet chamber

Figure 4 is a schematic view of the spray nozzle installation state of the present invention, (a) is a side view (b) is a front view

5 is an exploded perspective view of the jet nozzle of the present invention, (a) is the upper jet nozzle (b) is a wall jet nozzle

6 (a) (b) (c) are schematic diagrams for determining the incineration air injection pattern of the present invention.

* Explanation of symbols for main parts of the drawings

1: Keyboard 2: Control computer body

3: Monitor 4: Compressor

5: Dehydrator 6: Compressed air storage tank

7: Pressure regulating valve 8: Solenoid valve

9: Encoder 10: Limit switch

11: Top injection nozzle 12: Side injection nozzle

13: Air incineration line 14 for carbon incineration

15: Lamp beam head part 16: Carbonization room

17: attached carbon 18: coke layer

19: Cab 21: Injection nozzle support plate

22: Ascension Hall 23: 1 Coal Entrance

24: 2 coal loading 25: 3 coal loading

26: 4th Coal Entrance

The present invention relates to an apparatus for removing carbon in the coke oven carbonization chamber, and particularly in a coke oven for carbonizing coal to make coke, and to easily remove the carbon attached to the carbonization chamber wall or ceiling and around the coal charging port. will be.

Generally, in the process of distilling the coal charged into the carbonization chamber of the coke oven, volatile matters in the coal are pyrolyzed to produce dried gas and coal tar, and these by-products are recovered after exiting the upper space of the carbonization chamber. Because of high temperature (800-1000 ℃), some of them are thermally decomposed in the upper space of the carbonization chamber and released into fine carbon, and most of these free carbons are discharged out of the furnace together with dry gas, but some of them Grows attached.

At this time, carbon attached to the inside of the carbonization chamber is continuously generated and grows as the dry distillation progresses, and the carbon produced thereby causes the interference of the dry gas by narrowing the charge clogging or the dry gas flow space.

It also blocks the heat transfer from the combustion chamber to increase the heat of coal drying.

On the other hand, coke in the area caused by lack of heat transfer in the carbonization chamber is reduced in strength and the coke quality is also deteriorated, so that the carbon attached during the drying process is unable to continue the coke oven operation unless periodically removed.

Up to now, the generated carbon has been removed by using a method of incineration of attached carbon by inflow of external air by opening the riser and the entrance just before completion of work or dry distillation, or by a mechanical method using carbon kata. However, the method of manpower using hand tool is difficult to secure work due to high temperature and dust work when carbon is removed, difficulty in securing required manpower, and it may cause damage to lead when hitting the carbon attachment surface by hand tool. The carbon removal efficiency was low due to insufficient supply flow of incineration air.

In addition, a method of circulating combustion exhaust gas presented in Japanese Laid-Open Patent Publication No. Hei 5-156261 and injecting it into the carbonization chamber is proposed to remove the carbon attached to the upper part of the furnace. Due to the low reactivity between the carbons, the removal efficiency was lowered, and each door had to have exhaust gas injection facilities, which was impractical for practical use.

In addition, the coke oven removal carbon removal method presented in Japanese Patent Publication No. 5-194957 cannot be used for a long time because of the durability of the system for recognizing carbon in the carbonization chamber. Difficult to spray the desired amount in the interior failed to remove efficient in-house attachment carbon.

Therefore, the present invention was invented to solve the above problems in consideration of the above-mentioned problems, and by injecting incineration air into the carbonization chamber to remove carbon attached to the carbonization chamber of the coke oven by incineration removal of carbon. To provide the device.

The method of removing carbon and the device according to the present invention are characterized in that the carbon attachment position and incineration air injection amount in the carbonization chamber are input to the computer for controlling the device in advance in consideration of the carbon adhesion situation of each door (carbonization chamber), and the incineration air is It is made by the compressor and stored in the storage tank and then sprayed through the injection nozzle, by controlling the injection position and the incineration air injection volume according to the work statement.

Hereinafter, the invention will be described in detail with reference to the accompanying drawings.

The configuration of the apparatus for removing carbon in the carbonization chamber of the coke oven includes: a control computer body (2) equipped with a keyboard (1) and a monitor (3) for work orders and overall control of the apparatus; and an extruder rambeam in a coke oven (14). Encoder (9) and limit switch (10) for detecting the position movement and the moved position, a compressor (4) for generating air for carbon incineration, and a water remover for removing moisture from the compressed air ( 5), a compressed air storage tank (6) for storing compressed air, an air pressure regulating valve (7) for regulating incineration air injection pressure, a solenoid valve (8) for adjusting a flow rate of incineration air, The upper and side injection nozzles 11 and 12 installed in the ram beam head part 15 for injecting compressed air to the ceiling and the wall of the carbon 17 to the carbonization chamber 16, and the compressed air storage tank 6 Top and side through the solenoid valve (8) for flow control It consists composed of four nozzles 11, 12 carbon incineration air feed line (13) for guiding the compressed air.

The top and side injection nozzles 11 and 12 will be described in more detail as follows. The injection nozzle is a flat fan-shaped top sprayer for removing the carbonization chamber 16 ceiling, that is, the attachment carbon 17 on the top surface. The nozzle 11 and the wall of the carbonization chamber 16, that is, a pair of side injection nozzles 12 for removing the attachment carbon 17 on both sides are constituted.

On the other hand, the upper and side injection nozzles 11, 12 of the injection holes (11a, 12a) is formed in a slit (slit) shape, the upper injection hole (11a) has an internal flow path is divided into a fan-shaped shape The air is prevented from being injected only in the direction, and the side injection holes 12a are formed with a plurality of slit-shaped holes.

In addition, each of the upper and side injection nozzles (11) and (12) is equal in each direction at the front end of the upper and side injection nozzles (11), 12 and the air entering through the carbon incineration air transfer line (13) The pressure is uniformly bent at the end of the injection nozzles 11 and 12 so that the pressure is uniformly sprayed with one pressure.

In addition, the injection angle of the side injection nozzle 12 for spraying the side wall of the carbonization chamber 16 is formed to be slightly inclined with the side wall in order to prevent the duct damage from the direct blown by the injection air on the side wall.

3 shows a situation where the upper and side injection nozzles 11 and 12 are installed on the top of the extruder ram beam head part 15.

Hereinafter, an incineration air spray pattern setting and a computer input method will be described according to an embodiment of the present invention.

Example 1

The method of determining the incineration air injection pattern is as follows.

Figure 6a shows a cross-sectional schematic diagram of a carbonization chamber 16 having a width of 0.45m, a height of 6.7m, and a length of 16m in a coke oven consisting of 66 carbonization chambers 16. The attachment condition of the attachment carbon 17 is a lower portion of the ascending pipe 22 through which dry gas flows out, a number of coal inlets 23, and a number of carbons 17 around the coal inlet 24. It is attached, and it turns out that it attaches in order of the 3rd coal-charging opening 25 and the 4th coal-charging opening 26 next.

6 (a) shows an example of a pattern for injecting incineration air when the attachment carbon 17 is attached to the carbonization chamber 16 as shown in the above (b).

That is, in the sections 1,2 and 3 where the attached carbon 17 is severe, the maximum air injection amount is 100%. In section 4, 50% of the maximum injection amount is injected, and in section 5, 25% of the maximum injection amount is injected. That is, the injection pattern can be arbitrarily determined in consideration of the carbon attachment position and the deposition amount which are the carbonization chamber carbon adhesion conditions.

FIG. 6 (c) shows an encoder connected to a gear on top of the extruder rambeam 14 as the rambeam 14 of the extruder advances and exits into the carbonization chamber 16 to extract the dry coke in the carbonization chamber 16. The signal of 9) comes out in the form of a pulse signal, and when this signal is transmitted to the control computer main body 2, it detects how far the rambeam 14 of the extruder has advanced into the carbonization chamber 16 by a program embedded in the number of pulses. Reading becomes possible.

The operation of the incineration air injection system is programmed and built into the control computer main body 2 according to the injection pattern as shown in FIG. 6 (b), and the encoder 9 signal as shown in FIG. As soon as the ram beam 14 reaches the correct position, the operation signal is sent to the injection amount control valve, and the incineration air corresponding thereto is injected through the upper and side injection nozzles 11 and 12 to incinerate the attached carbon.

On the other hand, the injection pattern for the carbonization chamber wall portion is also determined in the same manner as above.

Example 2

In the present embodiment, the process of actually registering the control computer body 2 pattern will be described.

Table 1 shows the initial screen of the computer main body 2 for controlling the attachment carbon removing device according to the present invention.

The control program for the device control unit 2 of the computer 3 is written in the C language, and mode selection, which is data input, can be specified by the keyboard 1 or the mouse.

First of all, when the door number matching mode is selected, the screen number of the computer 3 indicates that the door number currently being pushed by the car is input to the computer.

This is to enter the door (carbonization room) to proceed with the current operation.

If you press it only once, the sequential operation situation will be able to automatically know the next order of work by executing the computer's built-in program.

Therefore, only a signal for notifying the start and end of each door is transmitted to the computer, such a signal can be seen by the signal of the limit switch 10.

If you select the upper pattern data registration screen on the initial screen, the screen shown in Table 2 appears.

Referring to the example shown on the screen, in the case of pattern No. 1, the pressure regulating valve 7 is 75% of the maximum set pressure of the compressed air storage tank 6 in the sections 1, 2 and 3 defined in the carbonization chamber 16. Means opening the solenoid valve 8 of the pipe passing 50% of the flow through the air pressure regulating valve 7 which is an air flow valve.

In the case of pattern 3, in the sections 4 and 5 defined in the carbonization chamber, the pressure regulating valve 7 opens the maximum set pressure 50% of the compressed air storage tank 6 and 50% of the flow rate through the pressure regulating valve 7. This means opening the solenoid valve 8 of the pipe through which the air is passed and sending the injection air to the injection nozzles 11 and 12.

The side jet pattern registration for incineration of carbon in the carbonization chamber 16 wall is also the same as the top data registration method.

After registering the various injection patterns, the injection pattern input for each carbonization chamber 16 only needs to input the pattern number in consideration of the carbon adhesion situation. Table 3 shows an example of inputting the injection pattern for each door.

In the above embodiment, the incineration air injection pattern determination, the injection pattern registration, and the injection pattern input for each sentence have been described.

Next will be described with respect to the operation and effect of the carbon removal device attached according to the present invention.

First, the incineration air volume injection pattern is registered in the computer body 2 for controlling the carbon removal device using the keyboard 1 or the mouse, and then the injection pattern is input in consideration of the attached carbon situation for each door.

After that, the incineration air injection pattern for removing the carbon is to determine the injection position and the injection amount for each door (carbonization chamber).

This injection pattern is computerized and embedded in a computer.

The operation of the system is that when the extruder enters the carbonization chamber to push the coke, the pulse signal according to the gear speed is output from the encoder 9 connected to the gear of the extruder rambeam 14, which is transmitted to the control computer and sprayed. When the ram beam head part 15 comes to the designated position in the pattern, a signal built into the computer sends a signal to the injection air pressure control valve 7 and the corresponding solenoid valve 8 according to the injection method specified in the injection pattern. In addition, the injecting air having passed through such a valve removes carbon while incineration air is injected into the upper surface and the side wall of the carbonization chamber 16 through the injection nozzles 11 and 12 positioned on the upper side of the ram beam head part 15.

This operation takes place simultaneously when the extruder rambeam 14 extrudes the coke, i.e., when it advances, when it is extruded, and when it is retracted.

On the other hand, the injection air is generated in the Compressor (4) after passing through the water remover (5) to remove the water generated during the air compression is stored in the compressed air storage tank (6) for a predetermined time after the extruder ram beam 14 is dried When starting to extrude the coke, it is injected through the air injection nozzles 11 and 12 after passing the injection air pressure and the volume control valve by the injection pattern.

The computer receives a signal from the limit switch 10 at the start and end of one door operation, and the work situation of the next door is performed by a built-in program.

This is usually possible because the carbonization chamber extrusion operation is skipped by five doors.

For example, if door 1 is currently working, next door 6 is followed by the extrusion process for door 11.

Therefore, if you enter only the first door number in the door number matching screen mode of the control computer basic screen is automatically continued sequentially so that you do not have to enter the number of the work statement for each inquiry work.

The invention as described above can effectively remove the carbon attached in the carbonization chamber, which can extend the life of the coke oven and eliminate carbon removal work by manpower, thereby expanding the range of high temperature, dust work and manpower operation, Furthermore, by removing carbon, it is easy to transfer heat from the combustion chamber to the carbonization chamber, thereby reducing the dry heat consumption of coal.

Claims (5)

A control computer main body (2) equipped with a keyboard (1) and a monitor (3) for overall control of work orders and devices, and an encoder (9) for detecting the shifted and moved positions of the extruder rambeam (14) in the coke oven. ) And limit switch (10), compressor (4) generating air for carbon incineration, moisture remover (5) for removing moisture from compressed air, and compressed air storage tank (6) for storing compressed air. ), An air pressure regulating valve (7) for adjusting the incineration air injection pressure, a solenoid valve (8) for adjusting the amount of incineration air injection, and a carbon (17) ceiling and wall attachment portion of the carbonization chamber (16). Top and side injection nozzles 11 and 12 installed in the ram beam head part 15 for injecting compressed air, and through the flow control solenoid valve 8 from the compressed air storage tank 6 to the top and side surfaces. Air transfer for incineration of carbon to guide compressed air to injection nozzles (11) and (12) Coke oven carbonizing room attached carbon removing apparatus is characterized by being a 13. According to claim 1, The upper end and the side injection nozzles (11), 12 are provided in the front end of the carbon incineration air transfer line 13, that is, the ram beam head portion 15, the upper surface injection nozzle (11) And carbon dioxide removal apparatus in a coke oven carbonization chamber, characterized in that the side injection nozzles 12 are installed on both sides. According to claim 1, The upper end and the side injection nozzles (11), 12 are provided on the front end of the carbon incineration air transfer line 13, that is, the ram beam head portion 15, the upper injection nozzle 11 is fan-shaped Shaped, the side injection nozzle 12 is a carbon removal apparatus attached to the coke oven carbonization chamber, characterized in that forming a triangular shape. The apparatus for removing carbon in a coke oven carbonization chamber according to claim 1, wherein the upper and side injection nozzles (11) and (12) are formed by bending the upper portion of the carbon incineration air transfer line (13). The top and side injection nozzles 11 and 12 have a plurality of injection holes 11a and 12a in a slit shape, but the upper injection holes 11a are formed in an arc shape, and the side injection holes 12a are formed. ) Is a carbon removal device with a coke oven carbonization chamber, characterized in that formed in a plane.