JPH0138156B2 - - Google Patents

Description

Detailed Description of the Invention This invention detects the coke temperature when taking out the burned coke from the carbonization chamber to the fire extinguisher, and monitors the temperature distribution of the coke in the coke chamber and the height of the coke in the coke oven. This invention relates to a data detection device for coke oven operation that can quickly detect data necessary for coke oven operation.

First, the outline of the configuration of the coke oven apparatus will be explained with reference to FIG. 1, together with its operation.

In Fig. 1, numeral 1 is a carbonization chamber, and 50 to 100 gates are normally arranged in the direction of the furnace group (perpendicular to the plane of the paper), alternating with friues 2 (not shown), and the carbonization chamber 1 is heated by the combustion heat in the friues 2. Ru. Reference numeral 3 denotes a coal charging car, which runs over the coking chamber 1 and the coalizer 2, which are in contact with a large number of cars, and charges coal received from a coal tower (not shown) into the coking chamber 1 through a coal charging port 4. Usually four to five coal charging ports 4 are provided in the upper part of each carbonization chamber 1. 5 is red-hot coke, which is made by coking the charged coal after a coke firing time of more than ten hours, and is discharged from the carbonization chamber 1 after the fire-off time. Reference numeral 6 denotes an extruder, which is located on the side of the carbonization chamber 1 and runs in the direction of the furnace group to extrude the red hot coke 5 from each carbonization chamber 1 and perform leveling work after charging the coal. 7 is an extrusion ram, which is attached to the extruder 6 and has a rod that pushes out the red hot coke 5 to the other side of the carbonization chamber 1, and has a length sufficient to pass through the inside of the carbonization chamber 1 and discharge the entire amount of the red hot coke 5. has. A coke guide car 8 is located opposite the extruder 6 across the carbonization chamber 1, and runs sequentially on a rail. Reference numeral 9 denotes a grid, which is provided inside the coke guide car 8 and allows the red hot coke 5 pushed out from the carbonization chamber 1 to pass through and be discharged without spilling onto the fire extinguishing engine 10. The fire extinguishing truck 10 is operated following the coke guide vehicle 8, receives the entire amount of red-hot coke 5 falling from the grate 9, and extinguishes and cools it in a fire extinguishing tower (not shown). 11 is Cork Works, fire engine 1
0, and temporarily stores extinguished and cooled coke discharged from the fire extinguisher 10.

When firing coke in the above-mentioned coke oven apparatus, the operation must be performed to reduce variations in firing time and to reduce the amount of heat required for carbonization. To do this, it is necessary to know the temperature distribution in each part of the coke in the coke chamber 1, that is, in the height H (usually about 7 m) and length L (usually about 15 to 20 m) directions, and to heat the coke 2 uniformly. need to be controlled. Also, check whether the coal is charged uniformly into the carbonization chamber 1.
It is necessary to know the height H of the coke inside.

By the way, conventional methods for measuring the temperature of coke include inserting a thermocouple thermometer into the coal charging port 4 of the coking chamber 1 or looking into the temperature using a radiation thermometer. Since it is limited to temperature measurement, it is dangerous to perform control based on this temperature data. Another method is to attach a thermocouple and a conducting wire to the tip of the extrusion ram 7 to measure the temperature of the inner wall surface of the carbonization chamber 1 at the time of exit from the kiln. It is not practical because pairs and conductors cannot be obtained. Furthermore, there is another method as shown in FIG.

FIG. 2 shows a part of the right side of the coke guide wheel 8 in FIG. 1, in which a cutout 12 is provided in the grid 9,
In this method, a radiation thermometer 13 is attached to measure the surface temperature of the red-hot coke 5 passing through the kiln, and the temperature is recorded by a recorder 14. In this case, it is possible to measure the temperature in the length L direction (Fig. 1) of the carbonization chamber 1, but in order to see the temperature distribution in the height H direction, it is necessary to It is necessary to install radiation thermometers 13 (every 2 m), which poses an economical problem.

On the other hand, the conventional method for determining the coke height H is to open the charging lid and insert a measuring rod from above immediately after coal charging or at the end of coal carbonization to determine the coal charging height. Alternatively, there is a method of measuring the height H of coke, but it is manual and requires a large number of pieces of coke, and the measurement environment inevitably deteriorates due to the opening of the charging lid. The disadvantage is that it takes time to measure. others,
As an indirect measurement method, there is also a method of calculating from the weight of the coal charging car 3 before and after receiving the coal, but this requires large-scale equipment and the coke height H
The calculation accuracy is poor and it is not practical.

This invention solves the above-mentioned problems of the prior art at once, and makes it possible to quickly obtain data such as the temperature and height of red-hot coke necessary for coke operation with a simple configuration. This invention will be explained below.

FIG. 3 is a schematic diagram showing an embodiment of the present invention. In this figure, reference numeral 21 denotes an elongated hole, which is formed perpendicularly to the side surface of the grid 9 in a portion close to the carbonization chamber 1, so that the passage of the red-hot coke 5 can be seen from the outside.
Reference numeral 22 denotes a temperature measurement device, which is a radiation thermometer with a high response speed of, for example, 1 m sec. It is configured by being attached to a scanning mechanism (not shown) that can scan at high speed,
The scanning angle signal S〓 and the temperature signal of the red hot coke 5
S〓 is sent to the outside every moment. 23 is a signal calculation device which receives the scanning angle signal S〓 and temperature signal S〓 from the temperature measurement device 22 and performs signal calculation using an electronic calculation mechanism installed inside the device, and calculates the result of the calculation. Outputs multiple arithmetic processing signals. A display device 24 receives a plurality of processing signals from the signal processing device 23, combines them into a predetermined form, and displays them.The coke oven operator uses the information from the display device 24. The plant performs various controls and operates the plant. Note that arrow A indicates the coke exit direction, H ₀ is the height of the elongated hole 21, H is the height of the coke, and H ₀ and H are aligned at the bottom. Further, θ indicates a scanning range, and this angle θ changes during scanning.

FIG. 4 is a block diagram showing the signal flow in the embodiment of FIG. 3. In this figure, 22, 23,
24 is the same as that in FIG. 3, and the signal calculation device 23 includes a delay amplification circuit 231, a clock circuit 232,
A calculation circuit 233 that calculates the coke position in the furnace, a calculation circuit 234 that calculates a height signal, and an amplifier 23
It consists of 5,236. In addition, the display device 24
consists of a selection circuit 241 and a display section 242.

Next, the operation of the embodiment shown in FIG. 3 will be explained with reference to the block diagram shown in FIG. 4 and the waveform diagrams shown in FIGS. 5 and 6.

First, the relationship between the detected temperature and the time obtained when the temperature measuring device 22 is scanned is as shown in FIG. In this figure, t is one scanning time (the time from the scanning starting point to returning to the next scanning starting point, for example, 10~
50 m sec), t ₁ is the period during which the red hot coke 5 is scanned, and t ₂ is the period during which the red hot coke 5 is scanned, and t 2 is the period during which the gap above the red hot coke 5 is scanned, that is, the H ₀ -H portion in Fig. 3 is scanned. This is the period during which Since the temperature of the red-hot coke 5 is usually about 900 to 1000°C, the temperature T repeats a pattern in which it drops sharply every time a scan occurs during a period _t2 that deviates from this. t ₀ is the time taken out of the kiln.

Now, the time required to push out the red hot coke 5 from the carbonization chamber 1 in Fig. 3 cannot be calculated from the speed of the extrusion ram 7 (Fig. 1), but in order to correctly correspond to the temperature of each part, it is necessary to measure it. Detection is performed using information from the temperature device 22. That is, the temperature signal S〓 (waveform in Figure 5) is set to an appropriate signal delay time constant (for example, response time is about 0.1 sec) as shown in Figure 4.
By passing the signal through a delay amplification circuit 231 having a delay amplification circuit 231, a substantially uniform trapezoidal curve is formed as shown in FIG. The time from the start point to the end point of this curve is the kiln removal time t ₀ . This is calculated by the clock circuit 232. The arithmetic circuit 233 performs the following arithmetic operation to determine the in-furnace coke position _LX in order to know moment by moment which part of the coking chamber 1 the red-hot coke 5 is being scanned by the temperature measuring device 22.

L _X = _{L / t 0} × _t Therefore, in the calculation circuit 233, it is necessary to store in memory all the temperatures corresponding to the coke position _LX in the furnace at every moment after the temperature is discharged from the oven in the carbonization chamber 1.

Next, calculation of the height H of the red-hot coke 5 will be explained. As shown in FIG. 5, the period _t1 is the time during which the red hot coke 5 is scanned, so it changes depending on the height H of the red hot coke 5.
Therefore, since the length of one scan of the temperature measurement device 22 is the height H ₀ of the elongated hole 21, the height H of the red-hot coke 5 can be determined from the ratio of the periods t ₁ and t ₂ . Actually, the periods t ₁ and t ₂ are determined from the ratio of the scanning angles of the temperature measuring device 22. This calculation is performed by the calculation circuit 234 and output as a height signal S _H. Further, the amplifier 235 has a function of outputting a temperature signal S, and the amplifier 236 has a function of outputting a continuous distance signal from the scanning start point, that is, a scanning position signal _SP , from the scanning angle signal S of the temperature measuring device 22.

The above-mentioned in-furnace coke position signal S _C , height signal S _H , temperature signal S〓, and scanning position signal S _P are sent to the selection circuit 2 of the display device 24 as data for operating the coke oven.
41, and an appropriate figure is displayed on the display section 242 by an appropriate combination to notify the coke oven operator.

FIG. 7, FIG. 8, and FIG. 9 show examples of graphics displayed on the display device 24.

Figure 7 is a temperature distribution diagram in the cross section of the coking chamber 1.
The temperature distribution of is shown in the curve. On the horizontal axis, L indicates the length of the carbonization chamber 1, R/S indicates the ram side, and C/S indicates the coke side. Also, the vertical axis shows the temperature,
The temperature signal S is scanned and only specific points are selected using the position signal _SP . If you display it like this,
The temperature distribution in the length L direction can be seen at a glance.

FIG. 8 is an isothermal curve diagram in a cross section of the carbonization chamber 1, the horizontal axis is the same as in _FIG . Only a specific temperature is selected. The curve is 900
℃ isotherm curve, the curve is a 950℃ isotherm curve.
According to this, the temperature distribution in the height direction of the carbonization chamber 1 can be easily known.

FIG. 9 is a coke level distribution diagram in a cross section of the carbonization chamber 1, where the horizontal axis is the same as FIGS. 7 and 8, and the vertical axis represents the height of coke. This is obtained from the coke height signal S _H and the coke position signal S _C in the furnace. This allows you to see at a glance whether the coal charging was uniform.

Based on the above information, the driver takes the following actions, for example. From the isothermal curve diagram in Figure 8, carbonization chamber 1
The Furyu 2 is controlled so as to optimize the firing temperature in the height direction and length direction. Also, the 9th
The coal charging height is estimated from the coke level curve shown in the figure (estimated and calculated from experimental values), and the coal charging is controlled to the appropriate amount.

In addition, in the above embodiment, the long holes 21 provided in the grid 9 are provided vertically, but this does not necessarily have to be vertical. In addition to using the timing circuit 232, the kiln exit time t ₀ can also be calculated from the movement of the extrusion ram 7.

As explained in detail above, this invention provides long holes in a grid, detects the temperature data of the red hot coke appearing in the long holes by scanning it with a temperature measuring device, and detects the temperature data of the red hot coke appearing in the long holes by scanning the temperature data with a temperature measuring device using a timing circuit. The oven exit time is detected from the temperature data, and the coke position data in the furnace is determined from the oven exit time and temperature data using an arithmetic circuit, so the temperature distribution of red-hot coke in the carbonization chamber can be known at a glance. Distribution maps and isothermal curve charts can be easily created.

In addition, since the temperature data and the scanning angle data of the temperature measuring device are used to determine the height data of red-hot coke using a calculation circuit, it is possible to know the uniformity of the coal charging level. Therefore, the temperature of the carbonization chamber can be controlled to achieve a more accurate temperature distribution.

Furthermore, as mentioned above, the time taken to take out the kiln is determined by a timing circuit using temperature data, so even if the movement of the extrusion ram etc. is not uniform or the movement of red-hot coke is uneven, the correct amount of coke in the furnace can be obtained. Location data is always available.

In addition, even if there are many carbonization chambers, it is only necessary to install one scanning temperature measuring device on the coke guide car, which is not only extremely economical, but also allows data to be obtained each time coke is taken out of the oven. Therefore, appropriate measures can be taken based on this data, making rapid control possible. Furthermore, various data can be collected almost unattended, so it has excellent advantages such as being suitable for labor saving.

[Brief explanation of drawings]

Figure 1 is a diagram showing an outline of the configuration of a coke oven device.
Fig. 2 is a diagram for explaining an example of a conventional method for measuring coke temperature, Fig. 3 is a schematic diagram showing the configuration of an embodiment of the present invention, and Fig. 4 shows the flow of signals in the embodiment of Fig. 3. Fig. 5 is a waveform diagram of the temperature output signal obtained by the temperature measuring device; Fig. 6 is a waveform diagram of the signal obtained by processing the temperature output signal of Fig. 5 to obtain the kiln removal time; FIG. 7, FIG. 8, and FIG. 9 are diagrams showing examples of display figures, respectively. In the figure, 1 is a carbonization chamber, 2 is a fuel cell, 3 is a coal charging car, 4 is a coal charging port, 5 is a red hot coke, 6 is an extruder, 7 is an extrusion ram, 8 is a coke guide car, 9
is a grid, 10 is a fire engine, 11 is a corkwork, 2
1 is a long hole, 22 is a temperature measuring device, 23 is a signal calculation device, and 24 is a display device.

Claims (1)

[Scope of Claims] 1. A data detection device for operating a coke oven in which red-hot coke in a carbonization chamber is extruded by an extrusion ram and taken out to a fire extinguishing vehicle through a grate on a coke guide car, wherein the grate is provided with elongated holes in the vertical direction; on the other hand,
A temperature measuring device that scans repeatedly at a constant speed along the long hole to detect temperature data of the red-hot coke appearing in the long hole, and a timing circuit that detects the elapsed time from the temperature data obtained by the temperature measuring device. A data detection device for coke oven operation, comprising: an arithmetic circuit that obtains coke position data in the oven based on the temperature data based on the oven removal time obtained by the timing circuit. 2. In a coke oven operation data detection device in which red-hot coke in a carbonization chamber is extruded by an extrusion ram and taken out to a fire extinguishing vehicle through a grate on a coke guide car, the grate is provided with elongated holes in the vertical direction;
A temperature measuring device that scans repeatedly at a constant speed along the long hole to detect temperature data of the red-hot coke appearing in the long hole, and a timing circuit that detects the elapsed time from the temperature data obtained by the temperature measuring device. , an arithmetic circuit that calculates the in-furnace coke position data of the temperature data based on the time taken out of the kiln obtained by the timing circuit; A data detection device for coke oven operation, characterized by comprising an arithmetic circuit for obtaining coke height data.