JP4424021B2 - Coke oven repair method, coke oven management device and program - Google Patents

Description

  The present invention relates to a coke oven repair method, a coke oven management apparatus, and a coke oven management program that prevent troubles such as clogging of a coke oven by repairing at an appropriate time.

  A coke oven that produces coke by carbonizing coal has a structure in which combustion chambers and carbonization chambers partitioned by furnace wall bricks, which are partition walls of refractory bricks, are alternately arranged. Coal, which is a raw material for coke, is loaded on a hopper of a coal transport vehicle, transported to a predetermined carbonization chamber, and charged into the carbonization chamber from above the carbonization chamber. Coal charged into the carbonization chamber is carbonized by the heat of the combustion chambers arranged on both sides of the carbonization chamber to become coke. The red hot coke after the dry distillation is pushed from the side by the extrusion ram of the extruder and discharged. In the case of a chamber furnace type coke, a series of operations such as charging of coal, coking, and extrusion of coke (kneading out) are repeated.

  When such a coke oven extrusion operation is repeatedly performed, it becomes difficult to smoothly perform extrusion. This is due to carbon adhering to the carbonization chamber furnace wall that accompanies dry distillation, damage or roughening of the furnace wall for some reason, expansion of coke cake that is a coke lump that is extruded, etc. This is because the extrusion force necessary for discharging from the carbonization chamber increases. As a result, when the coke extruding operation is hindered and extrusion becomes extremely difficult, so-called clogging (kiln clogging) may occur in which the coke is clogged in the carbonization chamber and cannot be extruded. If the extrusion operation is continued when clogging occurs, a great load is applied to the carbonization chamber furnace wall brick of the coke oven, which may lead to damage to the furnace body and collapse of the furnace wall. Therefore, in order to prevent a decrease in the life of the coke oven, when clogging occurs, the extrusion operation is interrupted, and measures such as manually scraping the coke clogged in the carbonization chamber until it becomes possible to extrude. Must be done. However, if the extrusion operation is interrupted, the kiln discharge schedule for the entire coke oven must be changed, and not only the single coking chamber but also the other coking chambers as a whole will not be able to reduce coke productivity. Since sufficient standing time is required until it becomes possible, the amount of heat consumed also increases, leading to an increase in coke production costs. In addition, if repair is performed after the clogging occurs, there is a disadvantage that damage to the furnace wall is accelerated since the repair is performed after the repair. Therefore, it is necessary to prevent such clogging from occurring.

  There is known a method for preventing clogging by monitoring and managing the extrusion force. For example, when the extrusion force of a certain carbonization chamber tends to increase, the carbonization chamber should be allowed to stand for a long time from the end of dry distillation to the discharge, or a carbonization chamber that requires a large extrusion force. Measures such as removing the carbon adhering to the furnace wall and repairing the furnace wall and the bottom of the furnace are taken.

In addition, as a method of operating a coke oven that can confirm the degree of carbon adhesion or damage to the furnace wall at an early stage, furnace wall repair is performed by continuously detecting the extrusion resistance applied to the extrusion ram of the extruder and the position of the extrusion ram at that time. Based on analysis of the CO concentration of combustion exhaust gas by detecting the presence / absence and abnormality of the abnormality from the technology for determining necessity (for example, see Patent Document 1) and the load waveform loaded on the extrusion ram of the extruder. A technique (for example, refer to Patent Document 2) for determining whether an abnormality due to damage to a furnace wall brick or an abnormality due to attached carbon is known.
Japanese Patent Laid-Open No. 11-61137 Japanese Patent Laid-Open No. 11-50058

  Management of the extrusion force (extrusion resistance, load waveform, etc.) applied to the extrusion ram of the extruder as described above is normally performed by an operator for each carbonization chamber. And, since repairs are performed appropriately for each carbonization chamber, there is a large part depending on the experience of the operator, and it is not possible to select the optimal repair time and repair method so as to suppress the increase in coke production cost as a whole coke oven It was difficult.

  Accordingly, an object of the present invention is to solve the problems of the prior art, prevent the occurrence of clogging, and suppress the increase in coke production cost as a whole coke oven, and a method for repairing the coke oven Is to provide.

  Another object of the present invention is to provide a coke oven management device and a program for assisting in determining a repair time and a repair method for a coke oven.

The features of the present invention for solving such problems are as follows.
(1) The extrusion force applied to the extrusion ram of the extruder when the coke is discharged from the coking chamber of the coke oven is measured and aggregated, and for each carbonization chamber, the average of the extrusion force for each predetermined period. The average extrusion force is calculated, the rate of change of the average extrusion force with respect to time for each carbonization chamber is calculated, and the average extrusion force and the rate of change are determined together with a name for identifying each carbonization chamber of the coke oven. Displayed for each period, the average extrusion force is displayed in order from the carbonization chamber having the highest average extrusion force , every predetermined period, and the carbonization chamber having the same extrusion force is repaired in order from the carbonization chamber having the highest extrusion force. For the coke oven repair method, the furnace wall in the carbonization chamber is repaired in preference to the carbonization chamber having a high rate of change in the average extrusion force .
(2) said to predict the pushing force from the rate of change in the future with respect to time of the average extrusion force, according to and performs furnace wall repair in order (1) a high carbonization chamber of the predicted extrusion force Repair method for coke oven.
( 3 ) For each carbonization chamber, the types of furnace wall repairs and repair dates applied to the furnace walls in the carbonization chamber are further tabulated, and the relationship between the types of furnace wall repairs, the elapsed time after repairs, and the average pushing force Predicting the future extrusion force from the above, and selecting the repair method that had the smallest rate of change in the average extrusion force until the next repair for the carbonization chamber where multiple types of furnace wall repairs were performed . The method for repairing a coke oven according to claim ( 1 ) or ( 2 ), wherein furnace wall repair is performed using the selected repair method in order from a carbonizing chamber having a high extrusion force .
(4) a predetermined period is one month, and calculates the average extrusion force to the monthly (1) to method of repairing a coke oven according to any one of (3).
( 5 ) Extrusion force storage means for storing in the storage device the extrusion force when coke is discharged from the coking chamber of the coke oven,
Analyzing means for calculating an average pushing force obtained by averaging the pushing force for each carbonization chamber within a predetermined period read from the storage device over the predetermined period;
Display means for displaying on the output device the average extrusion force and the rate of change of the average extrusion force with respect to time ;
Further, the operation data storage means for storing the operation data of the coke oven, the repair history storage means for storing the history of repairing the coking oven coke oven, and the analysis means calculated from the operation data storage means and the repair history storage means A data search means for searching for data corresponding to the obtained results,
In the display means, the average extrusion force and the rate of change are displayed for each predetermined period together with a name for identifying each carbonization chamber of a coke oven, and the average extrusion force is in order from a carbonization chamber having a high average extrusion force. In addition, the coke oven management apparatus displays the operation data and the repaired history every predetermined period .
( 6 ) Use a computer to repair the coking oven carbonization chamber.
An extrusion force storage step for storing in the storage device the extrusion force when discharging the coke from the coking chamber of the coke oven;
An extrusion force analysis step of calculating an average extrusion force obtained by averaging the extrusion force for each carbonization chamber within a predetermined period read from the storage device over the predetermined period;
A display step for displaying on the output device in order from the carbonization chamber having a high average extrusion force;
In the extrusion force analyzing step further calculates a rate of change with time of the average extrusion force for each coking chamber, further displaying the rate of change in the output device in said display step,
Furthermore, an operation data storage step for storing operation data of the coke oven at the time of extrusion operation of the coke oven,
A repair history storage step for storing the history of repairing the coking chamber of the coke oven in a storage device;
A data search step of searching the storage device for the operation data corresponding to the result calculated in the pushing force analysis step and the repaired history,
In the display step, the average extrusion force and the rate of change are displayed for each predetermined period together with a name for identifying each carbonization chamber of the coke oven, and the average extrusion force is sequentially from a carbonization chamber having a high average extrusion force. A method for managing a coke oven, characterized in that the operation data and the repair history are displayed on an output device for each predetermined period .
( 7 ) Computer to determine when to repair the coking oven coking chamber,
Extrusion force storage means for collecting the extrusion force when discharging the coke from the coking chamber of the coke oven and storing it in a storage device;
Extrusion force analysis means for reading out the extrusion force for each carbonization chamber within the predetermined period from the storage device, and calculating the average extrusion force by averaging the data of the extrusion force for each carbonization chamber,
Functioning as a display means for displaying the average extrusion force on the output device in order from the carbonization chamber having a high average extrusion force ;
In the extrusion force analyzing means further based on the average extrusion force, and calculates a change rate with respect to the average extrusion force time, in the display unit to display further the output device the rate of change,
In addition, the computer
Operation data storage means for storing the operation data of the coke oven at the time of extrusion operation of the coke oven,
Repair history storage means for storing the repair history of the coking oven carbonization chamber in a storage device;
Data search means for searching for data corresponding to the result calculated by the push force analysis means from the operation data storage means and the repair record storage means;
To function as
In the display means, the average extrusion force and the rate of change are displayed for each predetermined period together with a name for identifying each carbonization chamber of a coke oven, and the average extrusion force is in order from a carbonization chamber having a high average extrusion force. In addition, the coke oven management program is displayed every predetermined period, and further, the operation data and the repair history are displayed.

  According to the present invention, the coke oven can be repaired by optimizing the entire furnace. For this reason, generation | occurrence | production of clogging can be prevented and damage to the furnace wall brick of a coke oven can also be prevented, Therefore The increase in the coke manufacturing cost as the whole coke oven can be suppressed, and the lifetime of a coke oven can be extended. Further, it is possible to easily determine the repair time of each kiln of the coke oven and select a repair method.

  First, the coke oven will be described.

  The coke oven is composed of a carbonization chamber for carbonizing coal, a combustion chamber for burning fuel gas, a heat storage chamber for utilizing the residual heat of combustion waste gas, and a horizontal flue under the heat storage chamber. In the coke oven, a plurality of kilns are assembled to form a furnace group, and the carbonizing chamber constituting each kiln has a length of 12 to 16 m, a height of 4 to 7 m, and a width of 400 mm to 450 mm. The extruder extrudes about 12 to 16 m of the extruder ram from one side (PS side) of the carbonization chamber to discharge about 12 to 30 t of red hot coke to the opposite side (CS side) of the carbonization chamber. In order to facilitate the extrusion of coke, the carbonization chamber is 40 to 75 mm wider on the CS side with the coke guide wheel than the PS side with the extruder. In order to produce coke, the coke oven is provided with ancillary equipment such as a charcoal wheel, an extruder, a coke guide wheel, and a coke bucket wheel. The coal loading vehicle is provided at the top of the coke oven, and when coal cut out from the coal storage tank is received, it travels to a predetermined carbonization chamber and charges the coal into the carbonization chamber from the top of the carbonization chamber. The charged coal is carbonized by heat from the combustion chamber in a closed carbonization chamber. When the dry distillation is completed and the coal is coke, the extruder travels to the front of the carbonization chamber and starts discharging red hot coke. The extruder is equipped with a furnace lid removal device that lifts and closes the furnace lid of the carbonization chamber and an extrusion ram for extruding red hot coke. At the time of taking out the kiln, a cork guide car and a coke bucket car are waiting on the opposite side of the extruder across the carbonization chamber. And when the extruder pushes out the red hot coke in the carbonization chamber, the coke guide wheel opens the furnace lid on the opposite side of the carbonization chamber, opens the furnace lid on the opposite side of the carbonization chamber, and the red hot coke that is pushed out is the coke bucket vehicle. Guide it to be loaded on top. The coke bucket car receives red hot coke that is pushed out through the guide grid of the coke guide car. The coke bucket car that has received the red hot coke is pulled by the train and travels to the CDQ, and the red hot coke is dry digested in the CDQ. The extrusion force when discharging the coke from the coking chamber of the coke oven is a force applied to the extrusion ram when the coke is extruded by the extrusion ram of the extruder. In the present invention, the maximum load during one extrusion is the extrusion force. It is used as.

  In the coke oven that operates as described above, in the present invention, the extrusion force at the time of discharging the coke from the coking chamber of the coke oven is measured and tabulated, and for each carbonization chamber, the extruding force for each predetermined period. The average extrusion force, which is an average, is calculated, and the furnace wall in the carbonization chamber is repaired in order from the carbonization chamber having the highest average extrusion force. In that case, the name which identifies each carbonization chamber of a coke oven is set, and this name and the average extrusion force of the carbonization chamber corresponding to this name are displayed for every predetermined period in order of this average extrusion force. It is desirable.

  That is, a name for identifying each carbonization chamber of a coke oven having a plurality of carbonization chambers is set by, for example, a sequence number, and the extrusion force for each carbonization chamber (kiln) is continuously measured. And calculating the average extrusion force for each carbonization chamber for each predetermined period, and displaying the names for identifying the respective carbonization chambers in the descending order of the average extrusion force for each predetermined period. Further, the average extrusion force itself is also displayed side by side in descending order of the average extrusion force for each predetermined period.

  By displaying the name for identifying each carbonization chamber and the average extrusion force for each carbonization chamber in order of high average extrusion force for each predetermined period, the carbonization chamber with high extrusion force and the upward tendency of the extrusion force are displayed. A certain carbonization chamber or the like can be clearly identified, and the extrusion force can be easily monitored. For example, when the extrusion force is measured for several months with a predetermined period of one month, the average extrusion force is calculated every month, the vertical axis direction is the ranking of the extrusion force, and the horizontal axis direction is the name of each month. As an identification name and extrusion force of each carbonization chamber can be displayed as a list.

  The coking chamber repair schedule is determined using the above display results. Repair is preferentially performed in the carbonizing chamber with high extrusion force.

  Further, in the present invention, the extrusion force when coke is discharged from the coking chamber of the coke oven is measured and aggregated, and the average pushing force that is the average of the pushing force for each predetermined period is calculated for each carbonizing chamber. The change rate with respect to time of the average pushing force for each carbonization chamber is calculated, and the furnace wall in the carbonization chamber is repaired in order from the carbonization chamber having the large change rate. At that time, it is desirable to set a name for identifying each coking chamber of the coke oven, and to display the name, the average pushing force corresponding to the name, and the rate of change for each predetermined period.

  It is desirable to calculate the rate of change of the average extrusion force for each predetermined period and repair the carbonization chamber that tends to increase before the extrusion force becomes higher than a certain level. For this purpose, for example, when the extruding force is measured for several months with a predetermined period of one month, the average extruding force is calculated every month, and the difference in the average extruding force between this month and last month is calculated. By calculating the rate of change between them, the vertical axis direction is the rank of the pushing force, the horizontal axis direction is the name of each month, and the identification name, pushing force and rate of change of each carbonization chamber are displayed as a list, and the average It is possible to easily discriminate a carbonization chamber that tends to increase the extrusion force.

  Further, it is preferable to predict the future extrusion force from the rate of change of the average extrusion force and repair the furnace wall in order from the carbonized chamber having the predicted high extrusion force.

  Furthermore, repair is performed in order from the carbonization chamber with the highest absolute value of the extrusion force. For the carbonization chamber with the same absolute value of the extrusion force, the furnace wall is repaired with priority given to the carbonization chamber with a high rate of change in the average extrusion force. It is particularly preferred.

  In addition to the information on the extrusion force, for each carbonization chamber, the type of repair performed on the furnace wall in the carbonization chamber and the date of repair were tabulated, and the type of furnace wall repair and the progress after the repair. It is desirable to repair the furnace wall by predicting the future extrusion force from the relationship between time and average extrusion force.

  For each carbonization chamber, the information on the type of repair method performed on the carbonization chamber and the time (year / month / day) when the repair was performed is tabulated together with the measurement information of the extrusion force. By displaying the identification name of each and the average extrusion force of each carbonization chamber along with the repair status of each carbonization chamber, the transition of the average extrusion force and the furnace wall repair of the carbonization chamber can be easily associated with each other. .

  For example, by monitoring the coke oven using the number of days after repair as a variable, it is possible to derive changes in the extrusion force unique to each carbonization chamber, predict when the extrusion force will rise, determine the next repair date, and By repairing the carbonization chamber in advance before the power rises, repairs can be made while the damage to the wall of the furnace is minor, and the life of the coke oven can be extended.

  In addition, for the carbonization chamber where multiple types of furnace wall repairs were performed, the optimum repair method was selected by repairing the furnace wall using the repair method that had the smallest rate of change in the average extrusion force until the next repair. It becomes possible to do.

  In other words, since the optimal furnace wall repair method differs depending on the condition of each carbonization chamber, each repair method is used for the carbonization chamber having a history of performing multiple types of furnace wall repair in the past using the above method. It is desirable to grasp the difference in the rate of change in the extrusion force of each carbonization chamber due to the above, and select the most appropriate repair method according to the characteristics of each carbonization chamber and perform the repair.

  In the above coke oven repair method, the predetermined period for calculating the average extrusion force can be arbitrarily set, but under normal operating conditions, the predetermined period is suitably one month, and is averaged on a monthly basis. It is preferable to calculate the pushing force, make a repair plan, and perform the repair.

  FIG. 1 is a schematic view showing an embodiment of the configuration of a system for monitoring the extrusion force for each carbonization chamber for carrying out the repair method of the present invention. This system includes an operation computer 1 that monitors the extrusion force, a collection computer 2 that collects data related to the extruder, and an analysis computer (not shown) that inputs repair results. What is necessary is just to set suitably the number etc. of the computer to be used by the structure of a system. Input data to the system is data on the extruder, data collected on the coke oven process, and repair data.

  Data relating to the extruder is the extrusion force of the extruder ram 7 and the extrusion position of the extruder ram 7. The extruder ram 7 is inserted into a coke oven carbonization chamber for coke extrusion by an extrusion motor 5. The pushing force generated at this time is detected by the pushing force detector 3. As the extrusion force, for example, a current value of the extrusion motor 5 (extrusion motor), a torque applied to the shaft of the extrusion motor, a value measured using a load cell, or the like can be used. The extrusion position of the extrusion ram is detected by an extrusion position detector 4. As the extrusion position, for example, a value obtained by actually measuring the position of the extruder ram 7 using a varicam or the like can be used.

  The extrusion force, which is data relating to the extruder, is collected at each extrusion and stored in the collection computer 2 so that the data collected by the operation computer 1 can be displayed and edited, and the extrusion force is monitored.

  The data collected for the coke oven process is information on the state of each coking chamber regarding the coke operation, such as which coking chambers are ready for coke extrusion and are ready for kiln outbreaks. The data collected for the furnace process can be associated with the data for the extruder.

  The repair data is data relating to the repair work performed on each coking chamber of the coke oven, and is used to input the type of repair performed. Types of repairs include, for example, repair by brick replacement, repair of cracks due to chemical reaction by blowing reactive gas (CVD repair), repair by large thermal spraying equipment, repair by human thermal spraying, repair by empty kiln, etc. When repair is performed, these types and repair date and time are manually input from the analysis computer.

  FIG. 2 shows the display when the monthly average extrusion force of each carbonization chamber is calculated from the extrusion force data collected by the operation computer 1 and displayed on the screen on the display in descending order of the extrusion force. It is an example of a state. Here, each coking chamber of the coke oven is identified by numbers assigned in order from the end (No. 1 to 104). If the table | surface in FIG. 2 is used, while the carbonization chamber with high extrusion force can be confirmed easily, transition of the extrusion force change for every carbonization chamber for every month can be confirmed. Moreover, when the transition of the extrusion force with respect to a specific carbonization chamber is confirmed by providing a function of performing color display on the designated carbonization chamber number and displaying it, it is possible to easily check the variation of the extrusion force rank. In this way, by displaying the order of the extrusion force in descending order and managing the monthly transition of the extrusion force of each carbonization chamber, it is easy to find the carbonization chamber that tends to increase the extrusion force, and whether the carbonization chamber needs to be repaired or not. Since it is possible to make a judgment, it is possible to prevent the coke oven from being clogged and to prolong the life of the coke oven.

  FIG. 3 shows the monthly average pushing force of each carbonization chamber, the rate of change in pushing force, which is the difference between the pushing force of the latest month and the pushing force of one month ago, and the most recent repaired This is an example when the number of days is displayed on the screen on the display. In addition, when displaying the number of days after the most recent repair, it is possible to easily identify what type of repair has been performed by displaying it in different colors according to the type of repair data entered. It can be. By displaying the rate of change in extrusion force for each carbonization chamber and the number of days after repair, it is possible to easily grasp the change in extrusion force after repair for each carbonization chamber, and use it as a criterion for determining when it is time to repair. be able to. In addition, it becomes easy to understand the changes in the repair period that lead to an increase in the pushing force for each carbonization chamber due to the difference in the repair method. The repair method can be determined, and repair can be performed using an optimal repair method for each carbonization chamber. It is also possible to predict the degree of increase in the extrusion force after repair of each carbonization chamber in advance based on the data on the rate of change of the extrusion force, the repair method, and the number of days after repair. It becomes.

  FIG. 4 shows the ranking of the pushing force, the pushing force ranking of the previous period (last month), the fluctuation rank from the preceding period of the pushing force rank, the burning chamber number (coking chamber No.) for the top 20 kilns with high pushing force. .), Average extrusion force, rate of change in extrusion force, number of days after repair for each type of repair, recent tendency, pattern of exacerbation of extrusion force, are displayed on the screen on the display. In addition, in the lower part of FIG. 4, for the top 20 kilns with a high rate of change in extrusion force, the ranking of extrusion force, carbonization chamber number (carbonization chamber No.), average extrusion force, change in extrusion force, average The order of pushing force, the order of change of the pushing force rank from the previous period (last month), the number of days after repair for each repair type, the closest tendency, and the pushing force deterioration pattern were displayed. By displaying the repair method and the number of days after repair for each carbonization chamber, it is possible to easily obtain information regarding the repair for the carbonization chamber having a high average extrusion force or a high rate of change in extrusion force. Further, in order to capture the change in the pushing force from the tendency of the pushing force transition from the previous period, the latest tendency is “deteriorated” when, for example, “average value of pushing force over the last 10 days—the pushing force on the day” is 5 t or more. The change in the extrusion force is judged as “small change” when it is −5 t or more and less than 5 t, “slightly improved” when it is −15 t or more and less than −5 t, and “improvement” when it is less than −15 t. indicate. Further, the pushing force deterioration pattern is used to determine the pushing force deterioration pattern by indicating a guideline for the number of days after repair. For example, “immediately after repair” when the number of days elapsed after repair is 15 days or less, “(blank)” when 16 to 80 days, “short term” when 81 to 180 days, and “short term” when 181 to 500 days “Medium term” and “long term” are displayed for 501 days or more. As a result, it is possible to confirm whether the change in the extrusion force is increasing or improving, and it is also possible to confirm how long this change in the extrusion force is after repair. Yes. By performing such a display, it is possible to easily distinguish the carbonization chamber where the extrusion force is increasing because it is immediately after the repair, so select the carbonization chamber that actually needs repair and repair the furnace wall. Easy to do.

  Next, a coke oven management device (repair plan support device) suitable for use in carrying out the above-described method for repairing a coke oven will be described.

  As the coke oven management device, the pushing force storage means (collecting computer) for storing the pushing force when discharging the coke from the coking chamber of the coke oven in the storage device (database server), and the predetermined read from the storage device (database server) It is desirable to include an analysis unit (operation calculator) that calculates an average extrusion force obtained by averaging the extrusion force of each carbonization chamber within a predetermined period over a predetermined period, and a display unit that displays the average extrusion force on an output device. Furthermore, it is desirable to include operation data storage means (coke oven process computer) for storing operation data of the coke oven, and repair history storage means (analysis computer) for storing the history of repairing the coking chamber of the coke oven, It is desirable that the operation data storage means and the repair history storage means search for data corresponding to the result calculated by the analysis means, and that the display means further display the operation data and the repair history. . Further, it is desirable that the storage device, the pushing force storage means, and the analysis means are connected by a communication line. Furthermore, it is desirable that the operation data storage means and the repair history storage means are connected by a communication line.

  Moreover, as one embodiment of a coke oven management device (repair plan support device), a collecting computer that collects the extrusion force when discharging coke from the coking chamber of the coke oven and stores it in a database server, and a repair history of the coke oven An analysis computer that stores data in the database server, and an operation computer that analyzes information stored in the database server, and the collection computer, the analysis computer, the operation computer, and the database server are connected via a communication line Can be used. Furthermore, it is desirable that computers for managing the operation data of the coke oven are connected by a communication line. By managing the transition of the extrusion force of the coke oven using the apparatus configured as described above, it becomes possible to repair the coke oven at an appropriate time.

  When the coke oven management apparatus as described above is used, it is desirable to manage the coke oven by the following method using a computer, plan the repair of the coke oven, and repair the furnace wall.

An extruding force storing step for storing in a storage device the extruding force when discharging the coke from the coking chamber of the coke oven using a computer when repairing the coking chamber of the coke oven, and within a predetermined period read from the storage device Performing an extrusion force analysis step for calculating an average extrusion force obtained by averaging the extrusion force for each of the carbonization chambers in the predetermined period, and a display step for sequentially displaying on the output device from the carbonization chamber having a high average extrusion force. To manage the coke oven. Further, it is desirable that the rate of change of the average pushing force for each carbonization chamber with respect to time is further calculated in the pushing force analyzing step, and the rate of change is further displayed on the output device in the displaying step. Further, an operation data storage step for storing the operation data of the coke oven at the time of the extrusion operation of the coke oven, a repair history storage step for storing a history of repairing the coking oven carbonization chamber in a storage device, and an extrusion force analysis step A data search step for searching the storage device for operation data corresponding to the result calculated in step 1 and the repair history,
It is desirable that the operation data and the repair history are further displayed on an output device in the display step.

  It is also desirable to manage the coke oven using the following program and repair the furnace wall as appropriate.

Extrusion force storage means for collecting the extrusion force when discharging the coke from the coke oven in the coke oven and storing it in a storage device in order to determine the repair time of the coke oven in the coke oven,
Extrusion force analysis means that reads out the extrusion force for each carbonization chamber within a predetermined period from the storage device and calculates the average extrusion force by averaging the extrusion force data for each carbonization chamber, the average extrusion force is high in average extrusion force A coke oven management program for functioning as display means for displaying on the output device in order from the carbonization chamber. Further, it is desirable that the pushing force analyzing means further calculates a change rate with respect to time of the average pushing force based on the average pushing force, and the display means further displays the changing rate on the output device. Further, in order to determine a coke oven carbonization chamber repair method and timing, a computer, an operation data storage means for storing coke oven operation data during the coke oven extrusion operation, and a coke oven carbonization chamber A display means for functioning as a data search means for searching for data corresponding to the result calculated by the pushing force analysis means from the repair history storage means for storing the repair history in the storage device, the operation data storage means and the repair result storage means. It is desirable to further display operation data and repair history.

  Next, an embodiment of a system configuration suitable for use in carrying out the above-described method for repairing a coke oven will be described with reference to FIG.

  The coke oven repair system includes a collection computer 13, an analysis computer 14, an operation computer 15, a database server 16, and a coke oven process computer 17. These are connected to a communication line such as a LAN (Local Area Network), for example, so that data communication can be performed between them.

  The collection computer 13 is connected to the extruder control device 12 by a communication method such as RS232C, and the extrusion force corresponding to the position of the extrusion ram in each carbonization chamber when the extruder 11 performs the extrusion operation. Data is inputted from an extruder control device 12 which has inputted data from the extruder 11.

  The analysis computer 14 can input data of repair results (repair date and time, repair type, etc.) by an operator via an input device such as a keyboard.

  The operation computer 15 is for calculating and displaying data necessary for operation such as the transition of the extrusion force of each carbonization chamber, and the calculation conditions and display conditions are input by an operator via an input device such as a keyboard. , Set and enter.

  The database server 16 stores extruder data, repair performance data, and coke oven operation data during extrusion operation, which are calculated and displayed by the operation computer 15, and these data are collected by the collection computer 13, Input and stored from the analysis computer 14 and the coke oven process computer 17. Further, the operation computer 15 can read out data necessary for the calculation from the database server 16.

  The coke oven process computer 17 manages operation data such as the temperature and dust concentration of the coke oven when the extrusion operation is performed, and this data is used for repair management of the database server 16 when the extrusion operation is completed. It is stored in the database for communication via a communication line such as a LAN or a telephone line.

  Details of the program performed by the system as described above will be described using steps 100 to 308.

  Processing performed by the collection computer 13 will be described with reference to FIGS.

  FIG. 6 shows an embodiment of the system configuration of the collection computer 13, and FIG. 10 shows an embodiment of the processing flow. The collection computer 13 includes an input / output interface 18 for inputting / outputting data to / from the outside, a CPU (Central Processing Unit) 19 for performing data processing of the collection computer, a magnetic disk or a magneto-optical disk for storing data, etc. Storage device 20. The input / output interface 18 is connected to a communication line for inputting data from the extruder control device 12 and a communication line for outputting data to the database server 16. For example, the extruder controller 12 uses an RS232C communication line, and the database server 16 uses a LAN. These communication lines may be of the same type or different types.

  When a computer program is executed (STEP 100), a CPU (Central Processing Unit) 19 waits for data input from the extruder control device 12 (STEP 101).

  If there is data input from the extruder controller (STEP 101 / yes), data input processing is performed (STEP 102). Here, the data input from the extruder control device 12 refers to the position of the extruder ram during the extrusion operation and the data of the extrusion force corresponding to the position. Here, when the extrusion operation is started by the extruder operator, the extruder control device 12 inputs, for example, a signal of a varicam of the extruder, converts this to the position of the extruder ram, and the extruder at that time The load value of the load cell is converted into an extrusion force, and the data of the extrusion ram position and the extrusion force are output to the collection computer 13 through a communication line. The number of outputs is not particularly limited, but the data is taken in a cycle time that can be processed by the extrusion control device 12, for example, a cycle of about several hundreds msec, and taken in at intervals of several tens of mm until the extrusion operation is completed. It is supposed to be. The transmission from the extruder control device 12 to the collection computer 13 may be executed every time the extruder control device 12 fetches data at one location, or data until the completion of the work is sent to the extruder control device 12. You may make it memorize | store temporarily and send it collectively after extrusion operation completion.

  When the data is input, the collection computer 13 adds the data of the carbonization chamber number and the date and time of the extrusion operation to the data, and temporarily stores them in the storage device of the collection computer 13 (STEP 103).

  After the data input from the extrusion control device 12 is completed, the data stored in the storage device is output to the database server 16 via the LAN and stored (STEP 104).

  Next, processing performed by the analysis computer 14 will be described with reference to FIGS.

  FIG. 7 shows an embodiment of the system configuration of the analysis computer 14, and FIG. 11 shows an embodiment of the processing flow.

  The analysis computer 14 includes an input / output interface 21 for inputting / outputting data to / from the outside, a CPU (central processing unit) 22 for processing data of the analysis computer, a magnetic disk, a magneto-optical disk, etc. for storing data. Storage device 23 and a data input terminal device (keyboard, mouse, etc.) 24 for data input by human operation.

  The input / output interface 21 can receive and transmit data via other computers such as the operation computer 15 and the collection computer 13 and a communication line such as a LAN or a telephone line. Data is input / output. Further, a data input terminal device 24 is connected to input processing commands, repair types of each carbonization chamber, and history data of repair date and time.

  The CPU 22 stores the processing program stored in the external storage device 23 in advance in the storage device 23 by performing an operation to execute the processing program with a keyboard, a mouse, or the like after the analysis computer 14 is turned on. The program is read and the process is executed (STEP200).

  When the repair work is performed, the operator inputs an input processing command from the data input terminal device 24 (STEP 201), and the repaired data of the number of the carbonized chamber that has been repaired, the repair date and time, and the repair type are stored in the data input terminal device 24. (STEP 202).

  This data is temporarily stored in the storage device 23 (STEP 203), and then stored in the database server 16 via a communication line such as a LAN (STEP 204).

  Next, processing performed by the operation computer 15 will be described with reference to FIGS.

  FIG. 8 shows an embodiment of the system configuration of the operation computer 15, and FIG. 12 shows an embodiment of the processing flow.

  The operation computer 15 includes an input / output interface 25 for inputting / outputting data to / from the outside, a CPU (central processing unit) 26 for processing data of the operation computer 15, a magnetic disk, a magneto-optical disk, etc. for storing data. Storage device 27, and a data input terminal device (keyboard, mouse, etc.) 28 for data input by human operation.

  The input / output interface 25 can receive and transmit data with other computers such as the analysis computer 14 and the collection computer 13 and a communication line such as a LAN or a telephone line. Data is input / output. In addition, processing commands, processing conditions, display conditions, and the like are input from the data input terminal device 28. Furthermore, the processed results are output to an output device 29 such as a printer for outputting to a display screen such as a CRT or a form.

  One embodiment of the data structure of the database in the database server 16 is shown in FIG. A data file 30 is classified for each extrusion force data, repair data, and coke oven data. Further, each data file 30 stores individual data in association with the coking chamber number and the date and time.

  The pushing force data, the repair data, and the new data are stored in the coke oven data file 30 in addition to the already stored data file and stored for a predetermined period (for example, from the present to the past 1). Data for a year or two years) is stored, and data before a predetermined period is deleted.

  The CPU 26 stores the processing program stored in the external storage device 27 in advance in the storage device 27 by performing an operation to execute the processing program using a keyboard, a mouse, or the like after the operation computer is turned on. When the program is read and the process is started (STEP 300), the input screen is activated and waits for input from the operator (STEP 301).

  The operator designates what data regarding which repair is to be calculated and displayed by the data input terminal device 28 and inputs a processing command (STEP 301). Then, the processing conditions set by the operator are input (STEP 302). For example, after a predetermined date and time, conditions such as displaying the transition of the pushing force for each month are input using the corresponding carbonization chamber number as a key.

  The operation computer 15 accesses the database server 16 according to the input conditions, retrieves the corresponding data from the database server 16 and reads it (STEP 303).

  As shown in FIG. 9, since the database server 16 is divided into an extrusion force data file 30a, a repair data file 30b, and a coke oven data file 30c, the corresponding data is associated with, for example, the date and time as a key. To facilitate the later processing (STEP 304). For example, even if the date and time stored in each data is the same work, the date and time data may be different because the timing to store is different. In such a case, the closest time is used. Alternatively, a predetermined time range may be provided and associated with data within the time range.

  Using the associated data, the average pushing force and the rate of change of pushing force for each carbonization chamber and each month are calculated (STEP 305). Then, based on the calculated data, the carbonization chamber numbers are rearranged in the descending order of pushing force or change rate (STEP 306). The result is displayed on the output device 29 such as a display (STEP 307), and the operator examines the coke oven damage status and repair timing.

  When changing the data display contents, target data, etc., return to STEP 301 again (STEP 308 No).

  FIG. 13 is an example of an input screen displayed on the screen of the output device 29 during the operation in the above STEP 301. There are four selection functions: “push-out data summary table”, “average push-out table for each coking chamber”, “push-out order table for each coking chamber”, and “action guidance”. is there.

  When “push output data summary table” is selected, a monthly push force summary table for each coking chamber is displayed. The “push-out data summary table” is used to check the data as measured in the push-out force.

  When “Calculation table of average pushing force per coking chamber” is selected, data obtained by averaging the pushing force maximum value in one extrusion operation for each coking chamber on a monthly basis is tabulated, and the screen as shown in FIG. Is displayed. Also, calculate the rate of change of the average pushing force from the previous month, and search the repair management database for repair performance information corresponding to the pushing force data, and display it on the screen as a table as shown in FIG. You can also.

  When the “carbonization chamber pushing force ranking table” is selected, the monthly average pushing force for each coking chamber is rearranged in descending order of the pushing force and displayed on the screen as a table as shown in FIG. Similarly, in the “carbonized-chamber pushing force ranking table”, repair result information corresponding to the pushing force data can be retrieved from the repair management database, and displayed along with the pushing force data on the screen.

  When “Action Guidance” is selected, the repair result corresponding to the pushing force data and the operation data when the extrusion operation is performed are displayed for the set carbonization chamber number, and guidance for repairing is displayed. FIG. 14 is an example of a display result of “Action Guidance”. When a carbonization chamber number is input and an execution button is selected using a mouse or a keyboard, the extrusion corresponding to the extrusion date and time of the corresponding carbonization chamber number is displayed. Machine data (for example, pushing force, ram position where pushing force is maximized, extrusion current, etc.) and operation data of coke oven when extruding work (for example, charging coal into the coke oven kiln) , GCT, which is the time until the extrusion operation is started as coke, NCT, which is the time from when the coal is charged into the coke oven kiln and then burned down to become coke, flue temperature, etc. (The ram position having the maximum pushing force is displayed as “peak ram position” in FIG. 14). In this way, by displaying the operation data in accordance with the data of the extruder, the data of the extruder is abnormal (those that are out of the normal range with respect to the preset threshold value). In FIG. 14, the data of the cell surrounded by a thick frame in the table is extracted and displayed, and the abnormal value of the operation data at that time is also extracted and displayed in the same manner, so that the abnormality of the extruder is displayed. It is possible to determine what caused the value. If there is an abnormal value in the extruder but there is no abnormal value in the operation data, it is highly possible that the furnace wall itself is damaged. In such a case, take measures to repair the furnace wall. Judgment to take is made. In the “action guidance”, the transition of measured data of the pushing force is also displayed in a graph, and it is possible to easily confirm the history of the pushing force.

  Using the same system as in FIG. 1, the transition of the extrusion force for each coking chamber of the coke oven was managed and the coke oven was operated. Before the control of the extrusion force using the method of the present invention, the occurrence of clogging of the coke oven occurred about 300 pieces / month, but as a result of continuing the operation for about half a year using the method of the present invention, before the clogging occurred It was possible to repair the carbonization chamber as appropriate, reducing the occurrence of clogging and reducing the occurrence of clogging to 50 bottles / month. Holes in the brick wall of the coke oven could be avoided in advance, reducing the labor required for repairing the furnace wall. As a result, coke productivity was improved.

Schematic which shows one Embodiment of this invention. Display example of extrusion force data. Display example of extrusion force data. Display example of extrusion force data. Schematic of one embodiment of a coke oven management system configuration. 1 is a schematic diagram of an embodiment of a system configuration of a collection computer. 1 is a schematic diagram of an embodiment of a system configuration of an analysis computer. The schematic diagram of one embodiment of the system configuration of an operation computer. 1 is a schematic diagram of one embodiment of a data structure of a database in a database server. FIG. An embodiment of a processing flow of a collection computer. An embodiment of a processing flow of an analysis computer. An embodiment of the processing flow of an operation computer. An embodiment of the input screen at the time of using the program of this invention. An embodiment of a display result of “action guidance”.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation computer 2 Collection computer 3 Extrusion force detector 4 Extrusion position detector 5 Electric motor for extrusion 6 Coke oven 7 Extruder ram 11 Extruder 12 Extruder controller 13 Collection computer 14 Analytical computer 15 Operation computer 16 Database server 17 Coke oven Process computer 18 Input / output interface 19 CPU (Central processing unit)
20 Storage Device 21 Input / Output Interface 22 CPU (Central Processing Unit)
23 Storage Device 24 Data Input Terminal Device 25 Input / Output Interface 26 CPU (Central Processing Unit)
27 Storage device 28 Data input terminal device 29 Output device 30 Data file 30a Pushing force data file 30b Repair data file 30c Coke oven data file

Claims (7)

The extrusion force applied to the extrusion ram of the extruder when coke is discharged from the carbonization chamber of the coke oven is measured and aggregated, and the average extrusion force that is the average of the extrusion force for each predetermined period for each carbonization chamber. And calculating a rate of change of the average extrusion force with respect to time for each carbonization chamber, and the average extrusion force and the rate of change together with a name for identifying each carbonization chamber of the coke oven, for each predetermined period. The average extrusion force is displayed in order from a carbonization chamber having a high average extrusion force , and is displayed every predetermined period, and the carbonization chamber having the same extrusion force is repaired in order from the carbonization chamber having a high extrusion force. A method for repairing a coke oven, wherein a furnace wall in the carbonization chamber is repaired in preference to the carbonization chamber having a high rate of change . Wherein predicting a pushing force in the future from the change rate to the average extrusion force time, coke oven according to claim 1, characterized in that the furnace wall repair in order from high coking chamber of the predicted extrusion force Repair method. For each carbonization chamber, the types of furnace wall repairs performed on the furnace wall in the carbonization chamber and the date of repair were tabulated, and the future from the relationship between the type of furnace wall repair, the elapsed time after repair, and the average extrusion force. Predicting the extrusion force , and for the carbonization chamber where multiple types of furnace wall repairs were performed, select the repair method that had the smallest rate of change in average extrusion force until the next repair , and the predicted extrusion force The method for repairing a coke oven according to claim 1 or 2 , wherein furnace wall repair is performed using the selected repair method in order from a high carbonization chamber . A predetermined period one month, method of repairing a coke oven according to any one of claims 1 to 3, and calculates the average extrusion force to monthly. Extrusion force storage means for storing in a storage device the extrusion force when discharging coke from the coking chamber of the coke oven;
Analyzing means for calculating an average pushing force obtained by averaging the pushing force for each carbonization chamber within a predetermined period read from the storage device over the predetermined period;
Display means for displaying on the output device the average extrusion force and the rate of change of the average extrusion force with respect to time ;
Further, the operation data storage means for storing the operation data of the coke oven, the repair history storage means for storing the history of repairing the coking oven coke oven, and the analysis means calculated from the operation data storage means and the repair history storage means A data search means for searching for data corresponding to the obtained results,
In the display means, the average extrusion force and the rate of change are displayed for each predetermined period together with a name for identifying each carbonization chamber of a coke oven, and the average extrusion force is in order from a carbonization chamber having a high average extrusion force. In addition, the coke oven management apparatus displays the operation data and the repaired history every predetermined period . Using a computer to repair the coking oven carbonization chamber,
An extrusion force storage step for storing in the storage device the extrusion force when discharging the coke from the coking chamber of the coke oven;
An extrusion force analysis step of calculating an average extrusion force obtained by averaging the extrusion force for each carbonization chamber within a predetermined period read from the storage device over the predetermined period;
A display step for displaying on the output device in order from the carbonization chamber having a high average extrusion force;
In the extrusion force analyzing step further calculates a rate of change with time of the average extrusion force for each coking chamber, further displaying the rate of change in the output device in said display step,
Furthermore, an operation data storage step for storing operation data of the coke oven at the time of extrusion operation of the coke oven,
A repair history storage step for storing the history of repairing the coking chamber of the coke oven in a storage device;
A data search step of searching the storage device for the operation data corresponding to the result calculated in the pushing force analysis step and the repaired history,
In the display step, the average extrusion force and the rate of change are displayed for each predetermined period together with a name for identifying each carbonization chamber of the coke oven, and the average extrusion force is sequentially from a carbonization chamber having a high average extrusion force. A method for managing a coke oven, characterized in that the operation data and the repair history are displayed on an output device for each predetermined period . Computer to determine when to repair coke oven carbonization chamber,
Extrusion force storage means for collecting the extrusion force when discharging the coke from the coking chamber of the coke oven and storing it in a storage device;
Extrusion force analysis means for reading out the extrusion force for each carbonization chamber within the predetermined period from the storage device, and calculating the average extrusion force by averaging the data of the extrusion force for each carbonization chamber,
Functioning as a display means for displaying the average extrusion force on the output device in order from the carbonization chamber having a high average extrusion force ;
In the extrusion force analyzing means further based on the average extrusion force, and calculates a change rate with respect to the average extrusion force time, in the display unit to display further the output device the rate of change,
In addition, the computer
Operation data storage means for storing the operation data of the coke oven at the time of extrusion operation of the coke oven,
Repair history storage means for storing the repair history of the coking oven carbonization chamber in a storage device;
Data search means for searching for data corresponding to the result calculated by the push force analysis means from the operation data storage means and the repair record storage means;
To function as
In the display means, the average extrusion force and the rate of change are displayed for each predetermined period together with a name for identifying each carbonization chamber of a coke oven, and the average extrusion force is in order from a carbonization chamber having a high average extrusion force. In addition, the coke oven management program is displayed every predetermined period, and further, the operation data and the repair history are displayed.

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