TWI818606B - System and method for monitoring temperature of carbon brick of furnace - Google Patents

Abstract

A monitor system includes a furnace and a computer system. The furnace includes multiple layers of carbon bricks. Multiple temperature sensors are arranged in the carbon bricks. The computer system receives temperature values from the temperature sensors and accordingly displays a high temperature warning interface and a temperature change warning interface. In the high temperature warning interface, the background color of a corresponding field is set according to a percentage of the current temperature value to the historical high temperature. In the temperature change warning interface, the background color of a corresponding field is set according to the temperature difference between the current temperature value and a previous temperature.

Description

Blast furnace carbon brick temperature warning system and method

This disclosure relates to a warning system and method for the temperature of carbon bricks in a blast furnace.

When a new blast furnace or blast furnace is overhauled, several layers of carbon bricks will be laid in the hearth area of the blast furnace. Carbon bricks have strong resistance to molten iron erosion and can slow down the physical damage caused by the flow of molten iron. In order to facilitate the evaluation of the carbon bricks under long-term production According to the wear and tear condition, a thermocouple will be added at the center point of each layer of carbon bricks to measure the temperature of each layer of carbon bricks. However, due to the large number of thermocouples installed and the historical data, among so much data, an effective warning interface is needed for relevant personnel to use.

Embodiments of the present disclosure provide a blast furnace carbon brick temperature warning system, which includes a blast furnace and a computer system. The blast furnace consists of multiple layers of carbon bricks in which temperature sensors are placed. The computer system is connected to the temperature sensor through communication to receive the temperature value from the temperature sensor and display the high value on the display based on the temperature value. Temperature warning interface and temperature change warning interface. The high temperature warning interface includes a brick temperature monitoring screen. The brick temperature monitoring screen includes the current temperature value, the position of the carbon brick corresponding to the temperature value, the historical high temperature of the temperature value, and the percentage of the temperature value relative to the corresponding historical high temperature. Based on this, the computer system Percentage sets the background color of the corresponding field in the brick temperature monitoring screen. The temperature change warning interface includes a brick temperature change screen. The brick temperature change screen includes the current temperature value, the position of the carbon brick corresponding to the temperature value, the temperature difference between the temperature value and the corresponding first previous temperature, the temperature value and the corresponding The temperature difference between the second previous temperature, the historical high temperature of the temperature value, and the percentage of the temperature value relative to the corresponding historical high temperature. The computer system sets the background color of the corresponding field in the brick temperature change screen based on the temperature difference.

In some embodiments, the computer system sets multiple percentage intervals, and sets the background color of the corresponding field in the brick temperature monitoring screen according to which percentage interval the temperature value falls relative to the corresponding historical high temperature percentage. When the temperature value drops to a certain percentage range and exceeds the buffer percentage, the computer system changes the corresponding background color. In the brick temperature monitoring screen, the computer system sets the text color of the corresponding field based on the temperature warning value and the heating rate of the temperature value.

In some embodiments, the high temperature warning interface also includes a brick temperature warning setting screen for setting the percentage interval and the corresponding background color.

In some embodiments, the time difference between the current temperature value and the first previous temperature is less than the time difference between the current temperature value and the second previous temperature. The computer system sets multiple temperature difference intervals and sets the brick temperature according to which temperature difference interval the temperature difference between the current temperature value and the previous temperature falls in. Change the background color of the corresponding field in the screen.

In some embodiments, the temperature change warning interface also includes a temperature difference change setting screen for setting the temperature difference range and the corresponding background color.

From another perspective, embodiments of the present disclosure provide a blast furnace carbon brick temperature warning method, which is suitable for blast furnaces and executed by a computer system. The blast furnace contains multiple layers of carbon bricks, and multiple temperature sensors are arranged in the carbon bricks. This blast furnace carbon brick temperature warning method includes: accepting the temperature value from the temperature sensor, and displaying a high temperature warning interface and a temperature change warning interface on the display according to the temperature value; setting the high temperature warning interface includes a brick temperature monitoring screen, and a brick temperature monitoring screen Including the current temperature value, the position of the carbon brick corresponding to the temperature value, the historical high temperature of the temperature value and the percentage of the temperature value relative to the corresponding historical high temperature; set the background color of the corresponding field in the brick temperature monitoring screen based on the percentage; set the temperature The change warning interface includes a brick temperature change screen. The brick temperature change screen includes the current temperature value, the position of the carbon brick corresponding to the temperature value, the temperature difference between the temperature value and the corresponding first previous temperature, the temperature value and the corresponding The temperature difference between the second previous temperatures, the historical high temperature of the temperature value and the percentage of the temperature value relative to the corresponding historical high temperature; and setting the background color of the corresponding field in the brick temperature change screen based on the temperature difference.

In some embodiments, the step of setting the background color in the brick temperature monitoring screen based on a percentage includes: setting multiple percentage intervals, and setting the brick temperature monitoring based on which percentage interval the temperature value falls relative to the corresponding historical high temperature. The background color of the corresponding field in the screen; when the temperature value drops to a percentage range and exceeds a buffer percentage, the corresponding background color is modified; and in the brick temperature monitoring screen, according to the temperature warning value and temperature value The heating speed is used to set the text color of the corresponding field.

In some embodiments, the high temperature warning interface also includes a brick temperature warning setting screen for setting the percentage range and the corresponding background color.

In some embodiments, the time difference between the current temperature value and the first previous temperature is less than the time difference between the current temperature value and the second previous temperature. The above steps of setting the background color in the brick temperature change screen based on the temperature difference between the temperature value and the previous temperature include: setting multiple temperature difference intervals, and setting the brick temperature change screen according to which temperature difference interval the temperature difference falls in. The background color of the corresponding field.

In some embodiments, the temperature change warning interface also includes a temperature difference change setting screen for setting the temperature difference range and the corresponding background color.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

100: Blast furnace carbon brick temperature warning system

110: Blast furnace

111:Carbon Brick

112:Temperature sensor

120:Computer system

130:Display

200: High temperature warning interface

210: Brick temperature monitoring screen

220: Brick temperature warning setting screen

300: Temperature change warning interface

310: Radar chart

320: Brick temperature change screen

330: Temperature difference change setting screen

401~405: Steps

Figure 1 is a schematic diagram illustrating a blast furnace carbon brick temperature warning system according to an embodiment.

FIG. 2 is a schematic diagram illustrating a high temperature warning interface according to an embodiment.

FIG. 3 is a schematic diagram illustrating a temperature change warning interface according to an embodiment.

FIG. 4 is a flow chart illustrating a blast furnace carbon brick temperature warning method according to an embodiment.

The terms "first", "second", etc. used in this article do not specifically refer to the order or order, but are only used to distinguish components or operations described with the same technical terms.

Figure 1 is a schematic diagram illustrating a blast furnace carbon brick temperature warning system according to an embodiment. Referring to FIG. 1 , the blast furnace carbon brick temperature warning system 100 includes a blast furnace 110 , a computer system 120 and a display 130 . In this embodiment, the blast furnace 110 is used for making iron, but the disclosure is not limited thereto. The blast furnace 110 includes multiple layers of carbon bricks 111. These carbon bricks 111 can be disposed on the furnace bottom and on each layer of hearth. Temperature sensors 112 are disposed in at least part of the carbon bricks 111. For the sake of simplicity, not all carbon bricks 111 and temperature sensors 112 are shown in Figure 1. Figure 1 is only a schematic diagram, and this disclosure does not limit the placement location of the carbon bricks 111. In some embodiments, the temperature sensor 112 is a thermocouple, but the disclosure is not limited thereto. The computer system 120 may be a personal computer, a server, an industrial computer, or any electronic device with computing capabilities. The computer system 120 is communicatively connected to the temperature sensor 112 and the display 130. This communication connection can be achieved by any suitable wired or wireless communication means. The computer system 120 is used to receive the temperature value sensed by the temperature sensor 112, and display a high temperature warning interface and a temperature change warning interface on the display 130 according to the received temperature value. These two interfaces will be described in detail below. .

Under normal production conditions, the furnace wall will be sprayed with water in the hearth area. The heat energy in the furnace will be taken away by spraying water. The molten iron on the hot surface of the carbon bricks will form an iron-condensing layer due to the temperature drop. The iron-condensing layer can serve as a protective layer for the carbon bricks. A protective layer to avoid being corroded by molten iron. When the molten iron circulation in the hearth increases, the solidified iron layer will also be eroded by the molten iron, thereby eroding the carbon bricks. The thickness of the carbon bricks will gradually decrease. At this time, the temperature of the carbon bricks will rise and reach a new high. When the hearth circulation weakens, the solidified iron layer will grow again, so that the carbon bricks will no longer be eroded by molten iron, and the temperature of the carbon bricks will drop again. After the blast furnace is opened, there will be a problem of periodic carbon brick temperature reaching a new high. Each cycle lasts for about several months. If the carbon brick temperature reaches a new high, it means that the thickness of the carbon brick gradually decreases. Since the life of the blast furnace depends on the thickness of the carbon brick, Therefore, when the carbon brick temperature reaches a high level, the blast furnace must be operated cautiously and conservatively to reduce the chance of the carbon bricks being corroded by molten iron. Otherwise, the blast furnace will need to be overhauled and replaced with carbon bricks early, which will increase the cost. Based on the above reasons, the warning is provided here as a percentage of the carbon brick temperature relative to the historical high temperature.

FIG. 2 is a schematic diagram illustrating a high temperature warning interface according to an embodiment. Referring to FIG. 2 , the high temperature warning interface 200 includes a brick temperature monitoring screen 210 and a brick temperature warning setting screen 220 . The brick temperature monitoring screen 210 includes the current temperature value (third column) sensed by the temperature sensor 112. For the sake of simplicity, only the temperature value of the furnace layer "H4" is shown here. In addition, the brick temperature monitoring screen 210 also includes the position of the carbon brick corresponding to the temperature value (first column), including "north", "south", etc., and each position has a corresponding code (second column) , such as "H401A", "TX44A", etc. The brick temperature monitoring screen 210 also includes the historical high temperature of each temperature value (the fourth column), and the percentage of each temperature value relative to the corresponding historical high temperature (the fifth column). Taking the code name "H401A" as an example, the current temperature is 59.7 degrees and the historical high temperature is 179 degrees, so the percentage is 59.7/179=33.4%. The last column is the warning setting temperature, which can be set manually, historical data or any algorithm.

The higher the percentage of the current temperature value relative to the historical high temperature, the lower the thickness of the solidified iron layer and the closer the molten iron is to the surface of the carbon brick. Therefore, the computer system 120 will set the background color of the corresponding field according to the percentage. In this embodiment, the computer system 120 sets multiple percentage intervals. These intervals are, for example, four percentage intervals of 0~70%, 70%~80%, 80%~95%, and >95%. Each percentage interval can be Different colors are set, for example, the four percentage ranges correspond to white, yellow, pink and red respectively, but the present disclosure is not limited to this. In Figure 2, different background colors are used to represent different colors. Depending on which percentage range the percentage falls in, you can set the background color of each value in the same column. For example, taking the code "TX41A" as an example, the percentage is already greater than 80% at this time, so the background colors of the fourth and fifth columns can be set to pink. In other embodiments, the background colors of other columns can also be set. is pink.

In addition, the computer system 120 can also set the text color of the temperature value according to the temperature value and the temperature rising speed. Specifically, the general text color is green. When the current temperature value is greater than the warning setting value in column 6 (also known as the temperature warning value), the text color can be set to red (shown in bold in Figure 2). For example, the heating rate is y/x, which means the temperature rises by y degree in x hours, where x and y are real numbers determined through experiments. When the heating rate is greater than a critical value, the text color can be set to yellow. If the current temperature is greater than the warning setting value and the heating rate is greater than the critical value, the text color can be set to red or other colors.

When the current temperature value drops, the computer system 120 will also restore the corresponding background color and text color. In particular, you can set a Buffer percentage. The background color will only change when the current temperature value drops to a certain percentage range relative to the historical high temperature and exceeds the buffer percentage. For example, the above buffer percentage is 2%. When the percentage drops from 80% to 70%, although the color from 0 to 70% is white, the setting must be lower than 70-2=68%. Change the background color to white to avoid misjudgments caused by the percentage fluctuating around 70%.

The brick temperature alarm setting screen 220 is used to set the above-mentioned percentage interval, corresponding background color and buffer percentage (corresponding to "Alarm Auto Reset"). In the above embodiment, the boundaries of the four percentage intervals are 70%, 80% and 95%. The user can set these values through the brick temperature warning setting screen 220, and can also set the buffer percentage.

FIG. 3 is a schematic diagram illustrating a temperature change warning interface according to an embodiment. Referring to FIG. 3 , the temperature change warning interface 300 includes a radar chart 310 , a brick temperature change screen 320 and a temperature difference change setting screen 330 . The radar icon corresponds to a certain furnace layer, the angle represents the position of the carbon brick, and the radius represents the corresponding temperature value. The specific temperature value is displayed on the brick temperature change screen 320 . The brick temperature change screen 320 includes the current temperature value (third column), the position corresponding to each temperature value (first column), and the code number of the corresponding position (second column). The fourth column is the current temperature value and The temperature difference between the first previous temperature, the fifth column is the temperature difference between the current temperature value and the second previous temperature, the sixth column is the historical high temperature of each temperature value, and the seventh column is the temperature value relative to the historical temperature. Percentage of high temperature. In the example in Figure 3, the current temperature value is measured at 14:30, the first previous temperature is measured at 14:00, and the second previous temperature is measured at 06:00. That is to say, the first previous temperature is measured at 06:00. temperature and current The time difference between the temperature values is smaller than the time difference between the second previous temperature and the current temperature value. However, this is only an example. In other embodiments, the first and second previous temperatures may be set to temperature values at any previous time.

The brick temperature change screen 320 is used to observe the temperature change trend, so the background color of the corresponding field can be set according to the temperature difference between each temperature value and the previous temperature. Specifically, the computer system 120 can set multiple temperature difference intervals, such as <2°C, 2~8°C, and >8°C. Each temperature difference interval has a corresponding background color. The computer system 120 can set the temperature difference range according to the temperature difference. Which temperature difference interval to set the background color of the corresponding field. For example, the above three temperature difference intervals correspond to white, yellow and red respectively. In Figure 3, different background colors are used to represent different colors. Taking the code "H409A" as an example, the current temperature value is 75.6°C. The temperature difference between the current temperature value and the temperature measured at 06:00 (the second previous temperature) is 2.3°C, which is greater than 2°C, so it will correspond to The field is set to yellow. In addition, the temperature difference between the current temperature value and the first previous temperature is 0.3°C. The temperature difference at a closer time point is smaller than the temperature difference at a farther time point, indicating that the temperature rise at this location is getting slower and slower. trend.

Taking the code name "TX42A" as an example, the temperature difference between the current temperature value and the first previous temperature is 2.2°C, and the temperature difference between the current temperature value and the second previous temperature is 0.7°C, so the field "2.2" can be ” has its background color set to yellow. Since the temperature difference at a closer time point is larger than that at a farther time point, it means that the temperature at this location will rise faster in the future. In some embodiments, the background color or text color can also be set according to whether the temperature rise is slowing down or speeding up, but the disclosure is not limited thereto.

The temperature difference change setting screen 330 is used to set the temperature difference interval and the corresponding background color. In this example, the boundaries of the three temperature difference intervals are 2°C and 8°C. The user can set them to any value as needed. In addition, the temperature difference change setting screen 330 can also set the recording time to 2 hours, which means that the first previous time and the second previous time will be updated every two hours, for example, change 06:00 to 08:00, change 14: 00 changes to 16:00.

Whether in the high temperature warning interface 200 or the temperature change warning interface 300, when the operator observes different background colors or text colors, he will notice that the corresponding temperature is abnormal, and the operator can take corresponding measures, such as Reduce the wind and top pressure, increase the coke rate, start the ice water machine, strengthen tapping operations, etc., to reduce the circulation effect of molten iron and reduce the consumption rate of hearth carbon bricks.

FIG. 4 is a flow chart illustrating a blast furnace carbon brick temperature warning method according to an embodiment. Please refer to Figure 4. In step 401, the temperature value from the temperature sensor is accepted, and a high temperature warning interface and a temperature change warning interface are displayed on the display according to the temperature value. In step 402, the high temperature warning interface includes a brick temperature monitoring screen. The brick temperature monitoring screen includes the current temperature value, the position of the carbon brick corresponding to the temperature value, the historical high temperature of the temperature value, and the temperature value relative to the corresponding historical high temperature. percentage. In step 403, the background color of the corresponding field in the brick temperature monitoring screen is set according to the percentage. In step 404, the temperature change warning interface is set to include a brick temperature change screen. The brick temperature change screen includes the current temperature value, the position of the carbon brick corresponding to the temperature value, and the temperature difference between the temperature value and the corresponding first previous temperature. , the temperature difference between the temperature value and the corresponding second previous temperature, the historical high temperature of the temperature value, and the percentage of the temperature value relative to the corresponding historical high temperature. In step 405, according to the purpose The temperature difference between the previous temperature value and the previous temperature sets the background color of the corresponding field in the brick temperature change screen. However, each step in Figure 4 has been described in detail above and will not be described again here. In addition, the method in Figure 4 can be used in conjunction with the above embodiments or can be used alone. In other words, other steps can also be added between the steps in Figure 4 .

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

300: Temperature change warning interface

310: Radar chart

320: Brick temperature change screen

330: Temperature difference change setting screen

Claims (10)

A blast furnace carbon brick temperature warning system includes: a blast furnace including multiple layers of carbon bricks; a plurality of temperature sensors arranged in the carbon bricks; and a computer system connected to the temperature sensors through communication. Receive temperature values from the temperature sensors, and display a high temperature warning interface and a temperature change warning interface on a display according to the temperature values, wherein the high temperature warning interface includes a brick temperature monitoring screen, and the brick temperature monitoring screen Including the current temperature values, the positions of the carbon bricks corresponding to the temperature values, the historical high temperature of each of the temperature values, and the percentage of each of the temperature values relative to the corresponding historical high temperature, wherein the The computer system sets the background color of the corresponding field in the brick temperature monitoring screen based on the percentage. The temperature change warning interface includes a brick temperature change screen. The brick temperature change screen includes the current temperature values, the temperature values. The corresponding positions of the carbon bricks, the first temperature difference between each of the temperature values and the corresponding first previous temperature, the second temperature between each of the temperature values and the corresponding second previous temperature difference, the historical high temperature of each of the temperature values and the percentage of each of the temperature values relative to the corresponding historical high temperature, wherein the computer system sets the brick temperature according to the first temperature difference and the second temperature difference. Change the background color of the corresponding field in the screen. The blast furnace carbon brick temperature warning system as described in claim 1, wherein in the brick temperature monitoring screen, the computer system sets a plurality of percentage intervals, based on the percentage of each of the temperature values relative to the corresponding historical high temperature. Which percentage range of the percentage ranges the percentage falls in is used to set the background color of the corresponding field. When the temperature value drops to one of the percentage ranges and exceeds a buffer percentage, the computer system modifies Corresponding to the background color, in the brick temperature monitoring screen, the computer system sets the text color of the corresponding field according to the temperature values and the heating speed of the temperature values. As for the blast furnace carbon brick temperature warning system described in claim 2, the high temperature warning interface further includes a brick temperature warning setting screen for setting the percentage ranges and the corresponding background color. The blast furnace carbon brick temperature warning system as described in claim 3, wherein the time difference between each of the current temperature values and the corresponding first previous temperature is smaller than the time difference between each of the current temperature values and the corresponding second previous temperature. The time difference between previous temperatures, wherein in the brick temperature change screen, the computer system sets a plurality of temperature difference intervals, and determines which of the temperature difference intervals the first temperature difference and the second temperature difference fall within. Temperature difference interval to set the background color of the corresponding field. The blast furnace carbon brick temperature warning system as described in claim 4, wherein the temperature change warning interface also includes a temperature difference change setting screen for setting the temperature difference intervals and the corresponding background color. A blast furnace carbon brick temperature warning method, suitable for a blast furnace And executed by a computer system, the blast furnace contains multiple layers of carbon bricks, and multiple temperature sensors are set in the carbon bricks. The blast furnace carbon brick temperature warning method includes: receiving the temperature values from the temperature sensors, and A high temperature warning interface and a temperature change warning interface are displayed on a display according to the temperature values; the high temperature warning interface is set to include a brick temperature monitoring screen, and the brick temperature monitoring screen includes the current temperature values, the temperature values. The corresponding positions of the carbon bricks, the historical high temperature of each of the temperature values, and the percentage of each of the temperature values relative to the corresponding historical high temperature; set the bottom of the corresponding field in the brick temperature monitoring screen according to the percentage. color; setting the temperature change warning interface includes a brick temperature change screen. The brick temperature change screen includes the current temperature values, the positions of the carbon bricks corresponding to the temperature values, each of the temperature values and a first temperature difference between the corresponding first previous temperatures, a second temperature difference between each of the temperature values and the corresponding second previous temperature, the historical high temperature of each of the temperature values, and each of the The percentage of the temperature value relative to the corresponding historical high temperature; and setting the background color of the corresponding field in the brick temperature change screen according to the first temperature difference and the second temperature difference. As for the blast furnace carbon brick temperature warning method described in claim 6, the step of setting the background color of the corresponding field in the brick temperature monitoring screen according to the percentage includes: setting a plurality of percentage intervals in the brick temperature monitoring screen, according to every Which percentage range of the percentage ranges the temperature values fall in relative to the percentage of the corresponding historical high temperature sets the background color of the corresponding field; when the temperature values fall to one of the percentage ranges Once the buffering percentage is exceeded, the corresponding background color is modified; and in the brick temperature monitoring screen, the text color of the corresponding field is set according to the temperature values and the heating speed of the temperature values. As for the blast furnace carbon brick temperature warning method described in claim 7, the high temperature warning interface further includes a brick temperature warning setting screen for setting the percentage ranges and the corresponding background color. The blast furnace carbon brick temperature warning method as described in claim 8, wherein the time difference between each of the current temperature values and the corresponding first previous temperature is smaller than the time difference between each of the current temperature values and the corresponding second previous temperature. The time difference between previous temperatures, wherein the step of setting the background color of the corresponding field in the brick temperature change screen based on the first temperature difference and the second temperature difference includes: setting multiple temperature differences in the brick temperature change screen interval, and the background color of the corresponding field is set according to which temperature difference interval among the temperature difference intervals the first temperature difference and the second temperature difference fall. As for the blast furnace carbon brick temperature warning method described in claim 9, the temperature change warning interface also includes a temperature difference change setting screen, using To set the temperature difference intervals and the corresponding background color.

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