JP5750822B2 - Coke oven combustion chamber temperature measurement device and temperature management system - Google Patents

Description

  The present invention relates to a temperature measuring device for measuring the temperature of a coke oven combustion chamber and a temperature management system for a coke oven combustion chamber using the temperature measuring device.

  In general, coke is produced according to a kiln discharge schedule in which a cycle of coal charging, dry distillation, and coke kiln is repeated every several kilns using a coke oven having a large number of carbonization chambers. And the temperature of a carbonization chamber is managed by adjusting the temperature of the combustion chamber in the both sides of a carbonization chamber.

  In general, since combustion chambers are controlled in units of furnace groups, it is desirable that combustion chambers arranged in the furnace width direction have no variation in combustion among the combustion chambers. One combustion chamber is composed of a plurality of flue rows arranged in the furnace length direction, and is adjusted so as to give a gentle temperature gradient in the furnace length direction so that dry distillation and kiln can be efficiently performed. It is desirable that there is no variation in the combustion in the furnace length direction.

  If the flue temperature distribution in the furnace length direction of the combustion chamber varies, it may not be possible to maintain an appropriate temperature gradient, which may cause quality degradation due to dry distillation failure and operational troubles due to clogging.

  As a conventional furnace temperature measurement technique for a coke oven, there is a technique disclosed in Patent Document 1. This technique measures the combustion chamber atmosphere temperature 1 m below the lower end of the hairpin top of the combustion chamber in the combustion chamber row in a coke oven having a large number of adjacent carbonization chambers and combustion chamber rows. As a result, it is possible to measure the temperature that governs the carbonization status of the upper part of the carbonization chamber, so the management of the carbonization status of the coke oven can be easily and accurately implemented, and stable operation and uniform coke quality can be expected. Yes.

Further, Patent Document 2 includes a portable thermocouple and a transmission unit that wirelessly transmits a temperature converter and temperature data in a portable case, and a reception unit that receives the transmitted temperature data. And a temperature management system for a coke oven combustion chamber using the temperature measuring device.
JP 55-129484 A Japanese Patent Laid-Open No. 2006-70079

  However, in the technique disclosed in Patent Document 1, a part of the combustion chamber flue train is measured and represented as the temperature of the combustion chamber, and the measurement position of the thermocouple is fixed. Therefore, there is a problem that the temperature of an arbitrary combustion chamber flue cannot be measured and the temperature balance in the furnace length and the furnace width direction in the combustion chamber cannot be grasped.

  Further, in the technique disclosed in the above-mentioned Patent Document 2, since the compensating lead wire that connects the portable thermocouple and the temperature converter provided in the portable case is installed on the coke oven, the carbonization is performed. There is a problem that it may be cut due to interference with coke charging work or repair work in the room. Furthermore, when a thermometer is installed in a combustion chamber of several tens of kilns, since there are a large number of wires, there are many problems such as securing a storage space, employing a heat resistant material, and preventing disconnection.

  In the present invention, in view of the problems of these prior arts, a temperature measuring device for measuring the temperature of a coke oven combustion chamber is capable of measuring an accurate temperature distribution in the combustion chamber furnace length and the furnace width direction without fear of disconnection of the compensating lead wire. It is another object of the present invention to provide a temperature management system for a coke oven combustion chamber using the temperature measuring device.

    The above problems are solved by the following invention.

  [1] A temperature measuring device for a coke oven combustion chamber for measuring the temperature of the combustion chamber flue arranged along the coking chamber of the coke oven, from a plurality of installed wireless sensors for writing and transmitting temperature data A temperature detector configured, a wireless tag reader that receives temperature data and a wireless tag ID written in the wireless tag, a temperature that converts the temperature data into a temperature value, and displays a furnace chamber temperature distribution in the combustion chamber A temperature measuring device for a coke oven combustion chamber, comprising: a measuring device.

  [2] Management and control of combustion state based on comparison between furnace length direction temperature distribution obtained using the coke oven combustion chamber temperature measuring device described in [1] and target furnace length direction temperature distribution A temperature management system for a coke oven combustion chamber, comprising:

  [3] A temperature measuring device for a coke oven combustion chamber that measures the temperature of the combustion chamber flue arranged along the coking chamber of the coke oven, from a plurality of installed wireless sensors that write and transmit temperature data A temperature detector configured; a wireless tag reader that receives temperature data and a wireless tag ID written in the wireless tag; and a temperature measurement that converts the temperature data into a temperature value and displays a temperature distribution of a plurality of combustion chambers. And a temperature measuring device for a coke oven combustion chamber.

  [4] Combustion based on a comparison between the temperature distribution of the plurality of combustion chambers obtained using the temperature measuring device for the coke oven combustion chamber described in [3] above and the target temperature distribution of the plurality of combustion chambers A temperature management system for a coke oven combustion chamber, comprising a management / control device for managing / controlling the state.

  According to the present invention, there is no need for a compensating lead wire for connecting the thermocouple and the temperature converter, so that there is an effect that interference with other work does not occur. In addition, a temperature sensor can be permanently installed, and the work of attachment and removal can be omitted, so that there is an advantage that the work load can be reduced. Furthermore, since the number of measurement points can be easily increased, accurate temperature distribution in the combustion chamber furnace length and furnace width direction can be measured, and temperature control of the coke oven combustion chamber can be performed with higher accuracy.

It is a figure which shows the structural example of the temperature measuring apparatus and temperature management system of the coke oven combustion chamber which concern on 1st Embodiment. It is a figure which shows the detailed structural example (the 1) of a temperature detector part. It is a figure explaining the structure from a temperature sensor to a wireless tag reader, and the flow of information (the 1). It is a figure explaining the difference (the 1) of the management method. It is a figure which shows the structural example of the temperature measuring apparatus and temperature management system of the coke oven combustion chamber which concern on 2nd Embodiment. It is a figure which shows the detailed structural example (the 2) of a temperature detector part. It is a figure explaining the structure from a temperature sensor to a wireless tag reader, and the flow of information (the 2). It is a figure explaining the difference (the 2) of a management method.

[First Embodiment]
FIG. 1 is a diagram illustrating a configuration example of a temperature measuring device and a temperature management system for a coke oven combustion chamber according to the first embodiment. FIG. 2 is a diagram showing a detailed configuration example (No. 1) of the temperature detector portion. FIG. 3 is a diagram for explaining the configuration from the temperature sensor to the wireless tag reader and the information flow (part 1). Further, FIG. 4 is a diagram for explaining the difference (part 1) in the management method. In the following description, a thermocouple is used as an example of the temperature sensor, but the present invention is not limited to this.

  In the figure, 1 is a thermocouple, 1a and 1b are thermocouples (for measurement), thermocouples (for calibration), 2 is a wireless tag, 2a and 2b are wireless tags (for measurement), and wireless tags (for calibration). ), 3 is a temperature detector, 4 is a combustion chamber, 5 is a carbonization chamber, 6 is a wireless tag reader, 7 is a temperature measuring device, 8 is a management / control device, 20 is a control unit, 21 Denotes a memory, 22 denotes a transmission / reception unit, 23 denotes an antenna of the wireless tag 2, 60 denotes an antenna of the wireless tag reader 6, 70 denotes a temperature converter, and 71 denotes a temperature distribution display.

  First, the outline of the entire system will be described with reference to FIG. Combustion chambers 4 and carbonization chambers 5 are alternately arranged in the furnace width direction of the coke oven, and the temperature detector 3 is installed at a plurality of inspection ports provided in the upper furnace length direction of the combustion chamber 4.

  The temperature detector 3 measures an electromotive force of a thermocouple 1 described later, and transmits temperature data and a wireless tag ID to the wireless tag reader 6 from an antenna 23 of the wireless tag 2 described later.

  The wireless tag reader 6 receives the temperature data and the wireless tag ID transmitted from the temperature detector 3 and outputs them to the temperature measuring device 7.

  In the temperature measuring device 7, first, the received temperature data is converted into a temperature value by the temperature converter 70. Further, this process is performed on the plurality of temperature detectors 3, and the temperature values detected by the temperature detectors 3 are displayed by the temperature distribution display 71 in correspondence with the combustion chamber positions corresponding to the RFID tags ID. Displayed as temperature distribution in the furnace length direction. These results are output to the management / control device 8.

  The management / control device 8 compares the sent combustion chamber temperature measurement value with the combustion chamber temperature target value and finely adjusts the combustion valve and the like in order to manage and control the combustion state.

  4A illustrates the prior art, and FIG. 4B illustrates the management method according to the present invention. In the prior art, for example, there are few temperature measurement points such as two points on the inlet side and one on the outlet side and five points in the furnace length direction at one point in the center, whereas in the present invention, the number of temperature measurement points is easily increased. Is possible. For this reason, it can detect finely that the temperature deviation has generate | occur | produced with respect to the combustion chamber temperature target. For example, when the measured value of the combustion chamber temperature is lower than the target temperature of the combustion chamber, there is a concern about the shortage of dry distillation due to low temperature, so the combustion system is controlled (burner adjustment or the like). Thus, the combustion chamber temperature can be accurately adjusted to the combustion chamber temperature target, and good dry distillation can be realized.

  The temperature detector 3 includes a thermocouple 1 and a wireless tag 2, and takes in an electromotive voltage (= temperature data) from the thermocouple 1 generated according to the temperature of the measurement location into the control unit 20 inside the wireless tag 2. Then, the data is written in the memory 21 inside the wireless tag 2. Next, the temperature data and the wireless tag ID stored in the memory 21 are transmitted to the wireless tag reader 6 through the transmission / reception unit 22 and the antenna 23 of the wireless tag 2 (see FIGS. 3 and 2).

  At this time, as shown in FIG. 2, a thermocouple (for calibration) 1b is used for cold junction compensation separately from the thermocouple (for measurement) 1a and the wireless tag (for measurement) 2a. If the wireless tag (for calibration) 2b is provided and the calibration data is collected and transmitted at the same time, the accuracy of measurement is further increased.

  The wireless tag reader 6 receives the temperature data and the wireless tag ID transmitted from the wireless tag 2 through the antenna 60, and outputs the temperature data to the temperature measuring device 7 in association with the wireless tag ID.

  In the temperature measuring device 7, the temperature data is converted into a temperature value by the temperature converter 70. By performing this process for all the temperature detectors 3 attached to a plurality of positions in the combustion chamber, the temperature distribution display 71 can display the temperature distribution of the combustion chamber for each kiln. By performing appropriate temperature management based on the temperature distribution display as shown in FIG. 4B described above, it is possible to realize a good dry distillation condition.

  Note that it is preferable that a plurality of temperature detectors transmit temperature measurement results simultaneously in response to a single temperature measurement instruction transmitted from the wireless tag reader 6 because the temperature data to be obtained is highly synchronized.

  In addition, the wireless tag used in the present invention includes any one that incorporates a battery (active type), one that operates by receiving power supply from an antenna without incorporating a battery (passive type), and one that only receives power supply by wire. It may be in the form of However, each of the three types has advantages and disadvantages, and it is only necessary to decide which one to select depending on the object to be measured.

  In other words, the one with a built-in battery can increase the transmission / reception distance, so it is possible to install the RFID tag reader apart, and the number of temperature detectors that can be read at the same time can be increased, but the battery is periodically replaced. There is a need to. On the other hand, a device without a built-in battery is limited in transmission / reception distance, but does not require battery replacement and can be a compact device.

  In addition, although there is a risk of disconnection in the type that only receives power supply by wire, there is no risk of storage space by adopting a method of routing one line to multiple wireless tags, so there are restrictions on power supply and transmission / reception distance This can be relaxed and can be employed for measuring the temperature distribution in the combustion chambers of a plurality of kilns as in this embodiment.

[Second Embodiment]
FIG. 5 is a diagram illustrating a configuration example of a temperature measuring device and a temperature management system for a coke oven combustion chamber according to the second embodiment. FIG. 6 is a diagram showing a detailed configuration example (No. 2) of the temperature detector portion. FIG. 7 is a diagram for explaining the configuration from the temperature sensor to the wireless tag reader and the information flow (part 2). Further, FIG. 8 is a diagram for explaining the difference (part 2) in the management method.

  In the figure, the same reference numerals as those in FIGS. 3 × 1, 3 × 2 to 3 × 7 are temperature detectors, 4a1, 4a2 to 4a18 are combustion chambers, and 6b1, 6b2, and 6b3 are wireless tag readers.

  First, the outline of the entire system will be described with reference to FIG. In the figure, an example is shown in which temperature detectors 3x1 to 3x7 are arranged at the same furnace length position of the combustion chambers 4a1 to 4a7 in the furnace width direction of the coke oven.

  In response to an instruction from the wireless tag reader 6b1, the temperature detector 3x1 takes in an electromotive voltage (= temperature data) generated from the thermocouple 1 according to the temperature by the control unit 20 of the wireless tag 2, and the memory inside the wireless tag Write to 21. Next, the temperature data and the wireless tag ID stored in the memory are transmitted through the antenna 23 of the wireless tag.

  At this time, calibration data may be collected and transmitted simultaneously as temperature data (cold junction compensation).

  The wireless tag reader 6b1 receives the temperature data and the wireless tag ID transmitted from the wireless tag, and outputs the temperature data to the temperature measuring device 7 in association with the wireless tag ID. In the temperature measuring device 7, the temperature data is converted into a temperature value by the temperature converter 70. Further, this process is performed on the other temperature detectors 3x2, 3x3, and the temperature values detected by the temperature detectors 3x1 to 3x3 are obtained in correspondence with the combustion chamber positions corresponding to the wireless tag ID.

  These processes are also performed with the next wireless tag reader 6b2 (for example, corresponding to the temperature detectors 3x4, 3x5, and 3x6), and the temperature distribution is displayed as the combustion chamber temperature distribution in the furnace width direction as shown in the distribution example of FIG. It is displayed by the device 71. Similar processing is performed on the other RFID tag readers 6b3 to finally obtain the combustion chamber temperature distribution in the furnace width direction over the entire furnace group. The obtained result is output to the management / control device 8.

  The management / control device 8 compares the sent combustion chamber temperature distribution in the furnace width direction with the target combustion chamber temperature distribution, and finely adjusts the combustion valve and the like in order to manage and control the combustion state.

  As the thermocouple and the wireless tag, any of the separated type shown in FIG. 6 as well as the integrated type shown in FIG. 2 may be used. In the above description, a case where one temperature detector transmits a temperature measurement result in response to a single temperature measurement instruction transmitted from the wireless tag reader has been described. However, a plurality of temperature detectors simultaneously measure temperature. The result may be sent. In the case of simultaneous temperature measurement result transmission, the synchronization of temperature data is further increased.

  FIG. 8A illustrates a conventional technique, and FIG. 8B illustrates a management method according to the present invention. In the prior art, for example, there are few temperature measurement points such as five furnace width direction meters, but in the present invention, the number of temperature measurement points can be easily increased as shown in FIG. For this reason, it is possible to finely detect at which position in the furnace width direction the temperature deviation occurs with respect to the combustion chamber temperature target.

  For example, when the measured value of the combustion chamber temperature is lower than the target temperature of the combustion chamber, there is a concern about the shortage of dry distillation due to low temperature, so the combustion system is controlled (burner adjustment or the like). Moreover, when the carbonization characteristics of each kiln are different, the temperature target and burner adjustment for each kiln can be optimized. Thus, the combustion chamber temperature can be accurately adjusted to the combustion chamber temperature target, and good dry distillation can be realized.

  Conventionally, the combustion management of the whole of the plurality of kilns has been performed using the combustion chamber temperature measurement value of one kiln with respect to the combustion chambers of the plurality of kilns. Therefore, it becomes possible to finely adjust the combustion chamber temperature target value, the combustion valve, and the like for each kiln, and the variation in the dry distillation state for each kiln can be reduced.

1 Thermocouple 1a, 1b Thermocouple (for measurement), Thermocouple (for calibration)
2 Wireless tags 2a, 2b Wireless tags (for measurement), wireless tags (for calibration)
DESCRIPTION OF SYMBOLS 3 Temperature detector 3x1, 3x2-3x7 Temperature detector 4 Combustion chamber 4a1, 4a2-4a18 Combustion chamber 5 Coking chamber 6 Wireless tag reader 6b1, 6b2, 6b3 Wireless tag reader 7 Temperature measuring device 8 Management / control device 20 Control part 21 Memory 22 Transmitter / Receiver 23 Antenna 60 Antenna 70 Temperature Converter 71 Temperature Distribution Indicator

Claims (4)

A temperature measuring device for a coke oven combustion chamber that measures the temperature of the combustion chamber flue arranged along the carbonization chamber of the coke oven,
A plurality of thermocouples permanently installed in the furnace length direction of the combustion chamber ,
A measurement wireless tag that writes electromotive voltage data and a wireless tag ID of the thermocouple and transmits without using the compensating lead wire ,
A calibration thermocouple for cold junction compensation , which is provided separately from the measurement radio tag and the thermocouple , and a calibration radio tag for simultaneously writing and transmitting calibration electromotive voltage data of the calibration thermocouple A temperature detector;
Electromotive voltage data and the wireless tag ID of the thermocouple written in the measurement radio tag, and a calibration electromotive voltage data written in the calibration RFID tag, a wireless tag reader for receiving,
The thermocouple electromotive voltage data and the calibration thermocouple electromotive voltage data are converted into temperature values, and a temperature distribution indicator that displays the furnace length direction temperature distribution of the combustion chamber. a that temperature measuring device,
Temperature measuring apparatus coke oven combustion chamber, wherein that you eliminate the need for compensating cable for connecting the said thermocouple the calibration thermocouples each temperature transducer. Management and control for managing and controlling the combustion state based on a comparison between the furnace length direction temperature distribution obtained using the coke oven combustion chamber temperature measuring device according to claim 1 and the target furnace length direction temperature distribution A temperature management system for a coke oven combustion chamber, comprising: a device. A temperature measuring device for a coke oven combustion chamber that measures the temperature of the combustion chamber flue arranged along the carbonization chamber of the coke oven,
A plurality of permanent thermocouples for each combustion chamber arranged along the carbonization chamber ,
A measurement wireless tag that writes electromotive voltage data and a wireless tag ID of the thermocouple and transmits without using the compensating lead wire ,
A calibration thermocouple for cold junction compensation , which is provided separately from the measurement radio tag and the thermocouple , and a calibration radio tag for simultaneously writing and transmitting calibration electromotive voltage data of the calibration thermocouple A temperature detector;
Electromotive voltage data and the wireless tag ID of the thermocouple written in the measurement radio tag, and a calibration electromotive voltage data written in the calibration RFID tag, a wireless tag reader for receiving,
Temperature composed of the temperature distribution display for displaying the temperature distribution of the temperature transducer and a plurality of combustion chambers for converting the calibration electromotive voltage data of the thermocouple for the calibration and the electromotive voltage data of the thermocouples to a temperature value A temperature measuring device for a coke oven combustion chamber, comprising: a measuring device. Based on the comparison between the temperature distribution of the plurality of combustion chambers obtained using the temperature measuring device for the coke oven combustion chamber according to claim 3 and the target temperature distribution of the plurality of combustion chambers, A temperature management system for a coke oven combustion chamber, comprising a management / control device for controlling the coke oven.

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