JP6874553B2 - Carbon adhesion state analyzer, carbon adhesion state analysis method, computer program and computer-readable recording medium - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention includes a carbon adhesion state analysis device for identifying appropriate carbon adhesion at each position on the furnace wall surface of a coke oven in which the coke extrusion load is equal to or less than a control value, a carbon adhesion state analysis method, a computer program, and a computer readable. Regarding recording media.

In the coke oven, it is required to manage the operation so that the extrusion load of coke is minimized (that is, the operation is low load) from the viewpoint of stable operation and prolongation of the life of the furnace body. The extrusion load is affected by various factors such as coal composition, moisture content, and carbonization state. In particular, the unevenness of the furnace wall surface greatly affects the extrusion load as a frictional effect between the coke and the furnace wall. The unevenness of the furnace wall surface varies depending on the degree of carbon adhesion, and if the amount of carbon adhesion is large, convex carbon appears and leads to an increase in frictional resistance, while if the amount of carbon adhesion is small, rough skin (brick wall thinning) appears and the frictional resistance It leads to an increase. Therefore, it is important to control the carbon adhering to the furnace wall in order to minimize the extrusion load.

It has been empirically known that carbon is attached to the furnace wall of a coke oven and the extrusion load changes depending on the amount of carbon attached. For example, in Patent Document 1, for a carbonization chamber of a coke oven, a furnace wall surface state determination is performed to determine a sound brick surface state, a uniform carbon adhesion state, and a mottled carbon state from a furnace wall image (thermal image) using a concentration histogram. The device is disclosed. Further, in Patent Document 2, regarding the carbonization chamber of the coke oven, the sound brick surface state, the uniform carbon adhesion state, and the mottled carbon state are determined from the furnace wall image (thermal image) by using the concentration co-occurrence matrix as a feature quantity. A furnace wall surface condition determination device is disclosed.

Japanese Unexamined Patent Publication No. 2016-60777 Japanese Unexamined Patent Publication No. 2016-65225 Japanese Unexamined Patent Publication No. 2008-146621

Roger Koenker, Gilbert Bassett Jr .: Regression Quantiles; Econometrica, vol.46, Jan.1978, pp.33-50.

However, the techniques described in Patent Documents 1 and 2 only quantitatively evaluate the carbon adhesion state, and do not specify the detailed relationship between the carbon adhesion state and the extrusion load. _{That is, the amount of carbon adhering to the furnace wall can be roughly predicted from the CO 2} concentration measured at the time of carbon incineration by the lance performed after coke extrusion, or the amount of carbon adhering to the furnace wall can be estimated from the furnace wall image. The amount of carbon adhesion is determined by analysis, and the quantitative relationship between the amount of carbon adhesion and the extrusion load has not been clarified for each location of the furnace wall.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to clarify the quantitative relationship between the carbon adhesion amount and the extrusion load for each location of the furnace wall. It is an object of the present invention to provide a new and improved carbon adhesion state analyzer, a carbon adhesion state analysis method, a computer program, and a computer-readable recording medium.

In order to solve the above problems, according to a certain viewpoint of the present invention, a plurality of furnace wall images acquired as actual data in the past operation of the coke oven are analyzed, and the carbon adhesion state in each furnace wall image is determined. carbon determination unit, based on the determination result of carbon deposition conditions, the multiple divided regions set for chamber wall image, classification of calculating the indicator carbon deposition area carbon for each said segment region is attached The carbon adhesion area calculation unit calculates the correlation between the classification carbon adhesion area and the coke extrusion load for each division region, and based on the correlation, the appropriate carbon adhesion in the division region where the coke extrusion load is less than or equal to the control value. A carbon adhesion state analysis device including an appropriate range calculation unit for calculating an area is provided.

The division carbon adhesion area calculation unit may divide the furnace wall image in at least one direction of the coke extrusion direction or the furnace wall height direction to set the division region.

The appropriate range calculation unit may calculate the correlation between the compartmentalized carbon adhesion area of the compartmentalized region and the coke extrusion load by using the probability distribution correlation analysis method or the quantile regression model.

Further, the carbon adhesion state analysis device calculates the division carbon adhesion area in the division region for the furnace wall image for determining whether the carbon adhesion state is appropriate, and calculates by the calculated division carbon adhesion area and the appropriate range calculation unit. A determination processing unit for determining whether or not the furnace wall in the division region is in an appropriate carbon adhesion state by comparing with the appropriate carbon adhesion area may be further provided.

When the calculated classified carbon adhesion area deviates from the appropriate carbon adhesion area, the determination processing unit determines that the carbon adhesion to the furnace wall is determined according to the correlation between the classification carbon adhesion area of the division region and the coke extrusion load. Adjusting the amount The amount of air in the lance may be adjusted.

Further, in order to solve the above problems, according to another viewpoint of the present invention, a plurality of furnace wall images acquired as actual data in the past operation of the coke oven are analyzed, and the carbon adhesion state in each furnace wall image is analyzed. carbon judgment step of judging, based on the determination result of carbon deposition conditions, the multiple divided regions set for chamber wall image, the classification of carbon deposition area carbon for each said segment region is attached and partitioning coking area calculation step of calculating, for each segmented region, and calculates a correlation between the pushing load segment coking area and coke, the pushing load of the coke becomes less control value based on the correlation between partitioned regions A method for analyzing the carbon adhesion state is provided, which includes a step of calculating an appropriate range for calculating the appropriate carbon adhesion area of the above.

Further, in order to solve the above problems, according to another viewpoint of the present invention, the computer analyzes a plurality of furnace wall images acquired as actual data in the past operation of the coke oven, and in each furnace wall image. and determining the carbon judging unit of carbon adhesion state, based on the determination result of carbon deposition conditions, the multiple divided regions set for chamber wall image, classification carbon carbon per the segmented region is attached The classification carbon adhesion area calculation unit that calculates the adhesion area and the correlation between the division carbon adhesion area and the coke extrusion load are calculated for each division region, and the coke extrusion load is below the control value based on each correlation. A computer program for functioning as a carbon adhesion state analysis device is provided, which comprises an appropriate range calculation unit for calculating an appropriate carbon adhesion area of a division region.

Further, in order to solve the above problems, according to another viewpoint of the present invention, a computer analyzes a plurality of furnace wall images acquired as actual data in the past operation of the coke oven, and in each furnace wall image. and determining the carbon judging unit of carbon adhesion state, based on the determination result of carbon deposition conditions, the multiple divided regions set for chamber wall image, classification carbon carbon per the segmented region is attached The classification carbon adhesion area calculation unit that calculates the adhesion area and the correlation between the division carbon adhesion area and the coke extrusion load are calculated for each division region, and the coke extrusion load is below the control value based on each correlation. Provided is a computer-readable recording medium in which a program for functioning as a carbon adhesion state analysis device is recorded, which comprises an appropriate range calculation unit for calculating an appropriate carbon adhesion area of a division region.

As described above, according to the present invention, it is possible to clarify the quantitative relationship between the carbon adhesion amount and the extrusion load for each location of the furnace wall. By quantitatively clarifying the relationship between the carbon adhesion amount and the extrusion load for each furnace wall location, for example, the optimum furnace wall management target location and carbon at that location for appropriately controlling the carbon adhesion amount. It is possible to determine the control standard for the adhesion area (hereinafter, also referred to as "carbon control value").

It is a block diagram which shows the functional structure of the carbon adhesion state analysis apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the analysis processing by the analysis processing part which concerns on the same embodiment. It is explanatory drawing which shows an example of the carbon adhesion position specified on the furnace wall surface. It is explanatory drawing explaining an example of the setting method of the division area on the furnace wall surface. It is a scatter diagram of the sectional carbon adhesion area and the extrusion load in the sectional areas A1 to A6. It is a graph which shows the correlation obtained by the probability distribution correlation analysis method by taking only the part where data exists in the scatter diagram of FIG. It is a flowchart which shows the determination process of the carbon adhesion area by the determination processing part. It is explanatory drawing which shows the example which sets the circular division area on the furnace wall surface. It is a block diagram which shows the hardware configuration example of the carbon adhesion state analysis apparatus which concerns on this embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, so that duplicate description will be omitted.

<1. Carbon adhesion state analyzer ＞
First, with reference to FIG. 1, the functional configuration of the carbon adhesion state analysis device 100 according to the embodiment of the present invention will be described. FIG. 1 is a block diagram showing a functional configuration of the carbon adhesion state analysis device 100 according to the present embodiment.

The carbon adhesion state analysis device 100 according to the present embodiment identifies the carbon adhesion state in which the probability that the extrusion load of coke increases increases, and manages the carbon adhesion state of the furnace wall of the coke oven (carbon control value). To determine. As shown in FIG. 1, the carbon adhesion state analysis device 100 includes an analysis processing unit 110 and a determination processing unit 120. In the present embodiment, the carbon adhesion state analysis device 100 will be described as including the analysis processing unit 110 and the determination processing unit 120, but the present invention is not limited to such an example. For example, the analysis processing unit 110 and the determination processing unit 120 may be configured as separate devices, and communication between the devices may be possible so that the determination processing unit 120 can acquire the analysis result by the analysis processing unit 110. Good.

[1-1. Analysis processing unit]
The analysis processing unit 110 calculates the correlation between the coke extrusion load and the coke extrusion load in one or more compartments set on the furnace wall surface based on the actual data, and the coke extrusion load is equal to or less than the control value. Calculate the appropriate carbon adhesion area of the division area. As shown in FIG. 1, the analysis processing unit 110 includes a carbon determination unit 111, a compartmentalized carbon adhesion area calculation unit 113, and an appropriate range calculation unit 115.

The carbon determination unit 111 determines the carbon adhesion state at each position of the furnace wall image in the actual data obtained from the past operation results. The actual data is accumulated in the actual data storage unit 10 that stores the actual data of the past operation results, and the carbon determination unit 111 reads the actual data from the actual data storage unit 10 and describes the individual furnace wall images. Determine the carbon adhesion state at each position.

The carbon determination unit 111 may specify the carbon adhesion state from the furnace wall image by using, for example, the techniques described in Patent Documents 1 and 2. In the present embodiment, using the technique described in Patent Document 2, carbon is substantially uniformly adhered to the furnace wall surface so as to cover the refractory bricks constituting the furnace wall (in Patent Document 2, "" The position called "uniform carbon adhesion state") is specified as the carbon adhesion position. The identification of the carbon adhesion position is the determination of the carbon adhesion state in the present embodiment. Further, the above-mentioned "carbon adhesion area" refers to the area of the portion of the furnace wall surface specified to be in the "uniform carbon adhesion state" by using the technique described in Patent Document 2. In particular, the carbon adhesion area in the division region may be referred to as "division carbon adhesion area".

The division carbon adhesion area calculation unit 113 calculates the carbon adhesion area (division carbon adhesion area) of the division region from the carbon adhesion determination result specified by the carbon determination unit 111. The division carbon adhesion area calculation unit 113 sets one or a plurality of division regions on the furnace wall surface, and obtains the carbon adhesion area where the coke extrusion load is equal to or less than the control value for the set division regions. The division region may be set by equally dividing the furnace wall surface, or a part of the furnace wall surface at an arbitrary position of the furnace wall surface may be set. At this time, the division region may be set in consideration of the position where the amount of carbon adhering to the furnace wall tends to affect the extrusion load of coke.

Regarding the extrusion load of coke, for example, in the longitudinal direction of the furnace wall, if there is a factor of frictional resistance (convex carbon or rough skin) on the guide wheel side where coke is discharged from the carbonization chamber of the coke oven, the extrusion load will be increased. Larger (the guide car side has a greater effect on the extrusion load in the carbonized state), carbon does not adhere much to the furnace wall on the extruder side opposite to the guide car side, and the deterioration of the brick is less (carbonized). Operational experience such as (difference in degree of damage to the furnace wall depending on the situation) is known. It is also known that in the height direction of the furnace wall, the degree of influence of the frictional resistance on the extrusion load differs depending on the weight of the coke cake on the upper side or the lower side. Based on such operational experience, for example, it is divided into three parts, an extruder side part, a center part, and a guide wheel side part in the longitudinal direction of the furnace wall (coke extrusion direction), and the upper part and the lower part in the height direction of the furnace wall. It may be divided into two parts and six division areas may be set on the furnace wall surface.

By considering the operation knowledge in this way, a division region is set in a portion where the carbon adhesion state easily affects the extrusion load of coke, and the optimum carbon adhesion area in the division region is set by the appropriate range calculation unit 115 described later. Is specified, the carbon adhesion state of the portion that particularly affects the coke extrusion load can be appropriately controlled so that the coke extrusion load is equal to or less than the control value.

The division carbon adhesion area calculation unit 113 calculates the carbon adhesion state in the division region set for the furnace wall surface as the division carbon adhesion area for the past actual data. For example, the division carbon adhesion area calculation unit 113 calculates the carbon adhesion area of each of the left and right furnace wall images acquired from one kiln, and then obtains the average value of the left and right furnace walls in the kiln. It may be the divided carbon adhesion area in the divided region set in. The divided carbon adhesion area may be expressed by the number of pixels.

The appropriate range calculation unit 115 calculates the appropriate range of the carbon adhesion area to the furnace wall in the division region based on the division carbon adhesion area calculated by the division carbon adhesion area calculation unit 113. The appropriate range calculation unit 115 evaluates the relationship between the classified carbon adhesion area and the coke extrusion load, and determines the appropriate range of the carbon adhesion area to which carbon is adhered in order to reduce the coke extrusion load. By setting the carbon adhesion area of the division region to be within the appropriate range determined by the appropriate range calculation unit 117, the coke extrusion load can be set to the control value or less, and the coke extrusion load can be reduced.

[1-2. Judgment processing unit]
The determination processing unit 120 determines whether or not carbon is properly adhered to the furnace wall surface based on the newly acquired furnace wall image. As shown in FIG. 1, the determination processing unit 120 includes a determination carbon determination unit 121, a determination division carbon adhesion area calculation unit 123, and an adhesion state determination unit 125.

The determination carbon determination unit 121 determines the carbon adhesion state of the furnace wall image of the newly acquired furnace wall image as a determination target of the carbon adhesion state on the furnace wall surface of the coke oven. The determination carbon determination unit 121 functions in the same manner as the carbon determination unit 111 of the analysis processing unit 110, and the carbon adhesion state may be specified from the furnace wall image by using a known analysis technique. In the present embodiment, using the technique described in Patent Document 2, the position where carbon is substantially uniformly adhered to the furnace wall surface so as to cover the refractory bricks constituting the furnace wall is specified as the carbon adhesion position. To do.

The determination division carbon adhesion area calculation unit 123 calculates the carbon adhesion area (division carbon adhesion area) adhering to the division region based on the determination result of the determination carbon determination unit 121. The determination division carbon adhesion area calculation unit 123 functions in the same manner as the division carbon adhesion area calculation unit 113 of the analysis processing unit 110.

The adhesion state determination unit 125 determines whether or not the division carbon adhesion area calculated by the determination division carbon adhesion area calculation unit 123 is within an appropriate range. The adhesion state determination unit 125 compares the division carbon adhesion area with the appropriate range of the carbon adhesion area in the division region calculated by the appropriate range calculation unit 115 of the analysis processing unit 110, and attaches the carbon adhesion area to the furnace wall. It is determined whether or not the carbon adhesion state is normal. The adhesion state determination unit 125 determines that the carbon adhesion state of the furnace wall is normal if the carbon adhesion area is within the appropriate range, and adjusts the carbon adhesion state of the furnace wall if the carbon adhesion area is outside the appropriate range. Judge that it is necessary. When adjustment is required, countermeasure actions such as adjustment of the amount of air supplied by the lance are implemented. Further, the adhesion state determination unit 125 outputs the determination result of the carbon adhesion state to the furnace wall via an output device (not shown) such as a display device or an audio output device, and outputs the carbon of the current furnace wall to the operator. You may notify the adhesion state.

<2. Carbon adhesion state analysis method>
Hereinafter, the carbon adhesion state analysis method by the carbon adhesion state analysis device 100 according to the present embodiment will be described with reference to FIGS. 2 to 8.

[2-1. Analysis processing]
First, the analysis processing by the analysis processing unit 110 will be described with reference to FIGS. 3 to 6 based on the flowchart showing the analysis processing by the analysis processing unit 110 shown in FIG.

(S100: Actual data input)
First, the actual data of the past operation results stored in the actual data storage unit 10 is input to the carbon determination unit 111 of the analysis processing unit 110 (S100). The actual data includes at least the furnace wall image and the extrusion load in the coke extrusion step performed immediately before (or may be immediately after) the acquisition of the furnace wall image. In the present embodiment, analysis processing is performed for each furnace group, and the carbon control value of each furnace group is determined. If a sufficient number of actual data can be obtained for each kiln constituting the furnace group, the actual data may be analyzed for each kiln to determine the carbon control value of each kiln.

(S110: determination of carbon adhesion state)
The carbon determination unit 111 determines the carbon adhesion state at each position of the furnace wall image based on the input actual data (S110). The actual data may be input by, for example, the carbon determination unit 111 reading the actual data from the actual data storage unit 10. Here, in step S110, as described above, the carbon adhesion state may be specified from the furnace wall image by using a known technique. In the present embodiment, using the technique described in Patent Document 2, the position where carbon is substantially uniformly adhered to the furnace wall surface so as to cover the refractory bricks constituting the furnace wall is specified as the carbon adhesion position. To do. For example, as shown in FIG. 3, in the furnace wall surface W of the furnace wall, the carbon adhesion position and the specified region C can be represented.

(S120: Calculation of classified carbon adhesion area)
Next, the division carbon adhesion area calculation unit 113 calculates the carbon adhesion area of the division region from the carbon adhesion determination result of the past actual data specified by the carbon determination unit 111 (S120). The division carbon adhesion area calculation unit 113 first sets one or a plurality of division regions on the furnace wall surface. For example, the division carbon adhesion area calculation unit 113 may set the division region by equally dividing the furnace wall surface, or may set a part of the furnace wall surface at an arbitrary position of the furnace wall surface as the division region. Further, as described above, the division carbon adhesion area calculation unit 113 may set the division region in consideration of the position where the amount of carbon adhesion to the furnace wall tends to affect the extrusion load of coke.

For example, as shown on the upper side of FIG. 4, the division carbon adhesion area calculation unit 113 sets the furnace wall surface W of the coke oven in the longitudinal direction (the coke extrusion direction) of the extruder side portion, the center portion, and the guide wheel side portion. It is divided into two parts, an upper part and a lower part in the height direction of the furnace wall, and six division areas A1 to A6 are set on the furnace wall surface W. Next, the division carbon adhesion area calculation unit 113 divides the furnace wall image 9, which is an image of the furnace wall surface W, into six as shown in the lower side of FIG. 4 based on the set division areas A1 to A6.

Then, the division carbon adhesion area calculation unit 113 calculates the carbon adhesion area (division carbon adhesion area) for each of the set division regions. The divided carbon adhesion area may be expressed by the area occupancy of the carbon adhesion area to which carbon is attached to the total area of one division region, or may be expressed by the number of pixels. Further, the divided carbon adhering area of the divided region in one kiln may be expressed as, for example, the average value of the divided carbon adhering areas of the left and right furnace wall images 9 acquired from one kiln. At this time, the division carbon adhesion area calculation unit 113 obtains the division carbon adhesion area of the division region for each of the left and right furnace wall images acquired from one kiln, and then the left and right division carbon adhesion areas of the corresponding division region. By taking the average of, it is possible to calculate the divided carbon adhesion area of the divided region in one kiln.

(S130: Appropriate range calculation)
When the division carbon adhesion area of the division region is calculated, the appropriate range calculation unit 115 analyzes the relationship between the division carbon adhesion area and the coke extrusion load for each of the set division regions, and sets the extrusion load to be less than or equal to the control value. The appropriate range of the carbon adhesion area is determined (S130). The appropriate range is specifically calculated from the representative value of the extrusion load corresponding to the classified carbon adhesion area. The representative value of the extrusion load can be determined, for example, by using the probability distribution correlation analysis method described in Patent Document 3. The probability distribution correlation analysis method is a general-purpose method for analyzing the correlation between two data items (for example, the explanatory variable x and the objective variable y) from the operation data. Specifically, the range taken by the value of the explanatory variable x is divided into small regions, and the probability density function (for example, normal distribution or lognormal distribution) specified for each divided region is applied to obtain a predetermined cumulative probability. This is a method for obtaining a conditional probability density model p'(y | x) of the explanatory variable x and the objective variable y.

For example, as shown in FIG. 4, an example of the relationship between the divided carbon adhesion area of each of the divided regions A1 to A6 set on the furnace wall surface W and the extrusion load is shown in FIGS. 5 and 6. FIG. 5 shows a scatter plot of the segmented carbon adhering area and the extrusion load in each of the segmented regions A1 to A6. The divided carbon adhesion area is represented by the ratio of the area of the portion to which carbon is attached in the division region to the total area (that is, the area occupancy of the carbon adhesion area in the division region). When the division carbon adhesion area is 1, it means that carbon is adhered to the entire surface of the division region. Further, FIG. 6 is a graph showing the correlation obtained by the probability distribution correlation analysis method by taking up only the portion where the data exists in the scatter diagram of FIG. Therefore, the horizontal axis of FIG. 6 is different for each division area according to the data scattering state.

In the present embodiment, the value of the extrusion load having the specified cumulative probability is determined as the representative value, and in FIG. 6, the value of the extrusion load having the cumulative probability of 80% is used as the representative value. In this case, it means that the extrusion load generated in the future has a probability of 80% and is equal to or less than the representative value. The appropriate range of the classified carbon adhesion area is managed by defining the range of the classified carbon adhesion area that is equal to or less than the control value of the specific extrusion load in each division region. Therefore, as shown in FIG. 6, when the range in which the control value of the extrusion load is 30 tonf or less is defined as the appropriate range of the representative value of the extrusion load, if the classified carbon adhesion area is within the range satisfying this appropriate range, 80 The extrusion load can be suppressed to the control value of 30 tonf or less with a probability of%.

Here, as shown in FIG. 6, an appropriate range of the divided carbon adhesion area can be determined for each of the divided areas, but the width of the appropriate range varies depending on the divided area. Therefore, when actually managing the coke extrusion load so that it is below the control value, for example, when the extrusion load is smaller than the control value as a whole and the appropriate range is wide, such as in the division areas A1 and A3, or in the division area A4. When the appropriate range in which the extrusion load is smaller than the control value is narrow, it is difficult to control it. Therefore, by managing the compartmentalized carbon adhesion area in the compartmentalized regions A2, A5, and A6 other than the compartmentalized regions A1, A3, and A4, it is possible to appropriately manage the coke extrusion load.

In addition to the above probability distribution correlation analysis method, the present invention may calculate a representative value of the coke extrusion load by using, for example, the quantile regression model shown in Non-Patent Document 1.

As described above, the extrusion load is low by obtaining the compartmentalized carbon adhesion area from the actual data in the past operation results and analyzing the correlation with the coke extrusion load for each of the division regions set on the furnace wall surface W. The appropriate carbon adhesion area to be a load can be determined for each division region.

[2-2. Determination process]
Next, the determination processing of the carbon adhesion area by the determination processing unit 120 will be described with reference to FIG. 7. Note that FIG. 7 is a flowchart showing a determination process of the carbon adhesion area by the determination processing unit 120.

First, a furnace wall image for determining whether or not the carbon adhesion state of the furnace wall is appropriate is input to the determination carbon determination unit 121 of the determination processing unit 120 (S200). The input of the furnace wall image may be performed, for example, by the determination carbon determination unit 121 reading the furnace wall image from a predetermined storage device. When the furnace wall image is input, the determination carbon determination unit 121 determines the carbon adhesion state at each position of the input furnace wall image (S210). In step S210, the carbon adhesion state may be specified from the furnace wall image in the same manner as in step S110 of FIG. In the present embodiment, using the technique described in Patent Document 2, the position where carbon is substantially uniformly adhered to the furnace wall surface so as to cover the refractory bricks constituting the furnace wall is specified as the carbon adhesion position. To do.

Next, the determination division carbon adhesion area calculation unit 123 calculates the division carbon adhesion area of the division region set in the furnace wall image to be determined (S220). As the division region, the division region set by the division carbon adhesion area calculation unit 113 of the analysis processing unit 110 is used in step S120 of FIG. The determination division carbon adhesion area calculation unit 123 calculates the division carbon adhesion area in the set division region.

Then, the adhesion state determination unit 125 determines whether or not the division carbon adhesion area of the division region calculated by the determination division carbon adhesion area calculation unit 123 is within an appropriate range (S230). The adhesion state determination unit 125 compares the division carbon adhesion area of the division region with the appropriate range of the division carbon adhesion area in the division region calculated by the appropriate range calculation unit 115 of the analysis processing unit 110 in step S130 of FIG. Then, it is determined whether or not the carbon adhesion state to the furnace wall is normal. At this time, the adhesion state determination unit 125 outputs the determination result of the carbon adhesion state to the furnace wall via an output device (not shown) such as a display device or an audio output device, and outputs the determination result of the carbon adhesion state to the operator to the operator of the current furnace wall. The carbon adhesion state may be notified.

If the classified carbon adhesion area is within an appropriate range, the adhesion state determination unit 125 determines that the carbon adhesion state of the furnace wall is normal, and ends the determination process of FIG. 7 (S240). On the other hand, if the classified carbon adhesion area is out of the appropriate range, the adhesion state determination unit 125 determines that it is necessary to adjust the carbon adhesion state of the furnace wall, and implements measures so that the carbon adhesion state becomes appropriate. (S250). Specifically, by adjusting the amount of air supplied from the lance, which is inserted from multiple inlets at the top of the kiln and burns and removes carbon by blowing air against the carbon adhering to the furnace wall. The carbon adhesion area can be adjusted. The relationship between the amount of air attached to the amount of carbon adhering can be obtained from operational experience.

For example, when the compartmentalized carbon adhering area is out of the appropriate range in the compartmentalized region A6 of FIG. 4, the carbon adhering area is insufficient and the extrusion load is likely to increase. Therefore, in order to grow the carbon adhering to the furnace wall at such a position, the air supply is reduced or stopped for the lance that supplies air to the vicinity of the affected area. Further, when the classified carbon adhering area is out of the appropriate range in the classified region A2 of FIG. 4, the carbon adhering area is likely to increase and the extrusion load is likely to increase. Therefore, in order to remove the carbon adhering to the furnace wall at such a position, the amount of air supplied to the lance that supplies air to the vicinity of the affected area is increased more than usual by, for example, setting the maximum amount of air to be supplied. After the countermeasure is completed, the determination process shown in FIG. 7 is completed.

<3. Summary>
The configuration of the carbon adhesion state analysis device 100 according to the present embodiment and the carbon adhesion state analysis method based on the configuration have been described above. According to the present embodiment, the appropriate range of the compartmentalized carbon adhesion area is determined for one or a plurality of compartmentalized regions set on the furnace wall surface. The extrusion load of coke can be reduced by adjusting the carbon adhesion area of the division region so that the division carbon adhesion area is within the determined appropriate range.

By using the method according to the present embodiment, even if the knowledge about the relationship between the carbon adhesion position and the carbon adhesion state of the furnace wall and the coke extrusion load is not obtained in advance, the carbon adhesion in the compartmentalized area set on the furnace wall surface is obtained. The relationship between the area and the extrusion load of coke can be obtained. If the relationship between the carbon adhesion position and carbon adhesion state of the furnace wall and the coke extrusion load is known, the division area can be set at the carbon adhesion position that easily affects the coke extrusion load. It is possible to efficiently acquire the relationship between the carbon adhesion area and the coke extrusion load in the division region.

Further, by using the method according to the present embodiment, it is possible to independently manage the carbon adhesion area at an arbitrary place on the furnace wall. Furthermore, by determining the appropriate range of the carbon adhesion area in the division region, it is possible to control whether the carbon adhesion area in the division region is insufficient or excessive and is out of the appropriate range, and the extrusion load can be reduced. It will be possible to take measures before the increase.

In the above embodiment, as in step S110 of FIG. 2, the furnace wall surface is divided into 6 to set the division area, but the present invention is not limited to this example, and the number of divisions can be appropriately set. Further, as shown in FIG. 4, the division area may be set by a method other than equal division and setting the division area on the furnace wall surface. For example, as shown in FIG. 8, a plurality of analysis target positions (for example, analysis target positions P1, P2, P3) are set on the furnace wall surface W of the furnace wall, and each has a preset radius centered on each analysis target position. A defined circle (for example, circles C1, C2, C3) may be set as a division area. Even when the division region is set in this way, it is possible to calculate the division carbon adhesion area included in each circle and obtain the correlation between the division carbon adhesion area and the coke extrusion load, as in the above embodiment. it can. Further, as shown in FIG. 8, the division area set on the furnace wall surface may have overlapping portions.

Further, the division area can be set only on a part of the furnace wall surface. For example, when a region having a large influence on the extrusion load of coke is specified in advance based on operational knowledge, a compartmentalized region is set in the region, and the appropriate range of the compartmentalized carbon adhesion area in the compartmentalized region is determined by the above method. It may be calculated. In this way, by calculating the appropriate range of the divided carbon adhering area only for a part of the divided regions, it is possible to efficiently obtain the appropriate carbon adhering area of the region of interest during operation.

<4. Hardware configuration example>
Hereinafter, the hardware configuration of the carbon adhesion state analysis device 100 according to the present embodiment will be described in detail with reference to FIG. 9. FIG. 9 is a block diagram showing a hardware configuration example of the carbon adhesion state analysis device 100 according to the embodiment of the present invention.

The carbon adhesion state analysis device 100 mainly includes a CPU 901, a ROM 903, and a RAM 905. Further, the carbon adhesion state analysis device 100 further includes a bus 907, an input device 909, an output device 911, a storage device 913, a drive 915, a connection port 917, and a communication device 919.

The CPU 901 functions as an arithmetic processing device and a control device, and controls all or a part of the operation in the carbon adhesion state analysis device 100 according to various programs recorded in the ROM 903, the RAM 905, the storage device 913, or the removable recording medium 921. To do. The ROM 903 stores programs, calculation parameters, and the like used by the CPU 901. The RAM 905 primarily stores the program used by the CPU 901, parameters that change as appropriate in the execution of the program, and the like. These are connected to each other by a bus 907 composed of an internal bus such as a CPU bus.

The bus 907 is connected to an external bus such as a PCI (Peripheral Component Interconnect / Interface) bus via a bridge.

The input device 909 is an operating means operated by the user, such as a mouse, a keyboard, a touch panel, buttons, switches, and levers. Further, the input device 909 may be, for example, a remote control means (so-called remote controller) using infrared rays or other radio waves, or an external connection device 923 such as a PDA corresponding to the operation of the carbon adhesion state analysis device 100. It may be. Further, the input device 909 is composed of, for example, an input control circuit that generates an input signal based on the information input by the user using the above-mentioned operating means and outputs the input signal to the CPU 901. By operating the input device 909, the user of the carbon adhesion state analysis device 100 can input various data to the carbon adhesion state analysis device 100 and instruct the processing operation.

The output device 911 is composed of a device capable of visually or audibly notifying the user of the acquired information. Such devices include display devices such as CRT display devices, liquid crystal display devices, plasma display devices, EL display devices and lamps, audio output devices such as speakers and headphones, printer devices, mobile phones, facsimiles and the like. The output device 911 outputs, for example, the results obtained by various processes performed by the carbon adhesion state analysis device 100. Specifically, the display device displays the results obtained by various processes performed by the carbon adhesion state analysis device 100 as text or an image. On the other hand, the audio output device converts an audio signal composed of reproduced audio data, acoustic data, and the like into an analog signal and outputs the signal.

The storage device 913 is a data storage device configured as an example of the storage unit of the carbon adhesion state analysis device 100. The storage device 913 is composed of, for example, a magnetic storage device such as an HDD (Hard Disk Drive), a semiconductor storage device, an optical storage device, an optical magnetic storage device, or the like. The storage device 913 stores programs executed by the CPU 901, various data, various data acquired from the outside, and the like.

The drive 915 is a reader / writer for a recording medium, and is built in or externally attached to the carbon adhesion state analysis device 100. The drive 915 reads the information recorded on the removable recording medium 921 such as the mounted magnetic disk, optical disk, magneto-optical disk, or semiconductor memory, and outputs the information to the RAM 905. The drive 915 can also write a record to a removable recording medium 921 such as a mounted magnetic disk, optical disk, magneto-optical disk, or semiconductor memory. The removable recording medium 921 is, for example, a CD media, a DVD media, a Blu-ray (registered trademark) media, or the like. Further, the removable recording medium 921 may be a compact flash (registered trademark) (CompactFlash: CF), a flash memory, an SD memory card (Secure Digital memory card), or the like. Further, the removable recording medium 921 may be, for example, an IC card (Integrated Circuit card) or an electronic device on which a non-contact type IC chip is mounted.

The connection port 917 is a port for directly connecting the device to the carbon adhesion state analysis device 100. Examples of the connection port 917 include a USB (Universal Serial Bus) port, an IEEE1394 port, a SCSI (Small Computer System Interface) port, an RS-232C port, and the like. By connecting the external connection device 923 to the connection port 917, the carbon adhesion state analysis device 100 directly acquires various data from the external connection device 923 and provides various data to the external connection device 923. ..

The communication device 919 is, for example, a communication interface composed of a communication device or the like for connecting to the communication network 925. The communication device 919 is, for example, a communication card for a wired or wireless LAN (Local Area Network), Bluetooth (registered trademark), WUSB (Wireless USB), or the like. Further, the communication device 919 may be a router for optical communication, a router for ADSL (Asymmetric Digital Subscriber Line), a modem for various communications, or the like. The communication device 919 can transmit and receive signals and the like to and from the Internet and other communication devices in accordance with a predetermined protocol such as TCP / IP. Further, the communication network 925 connected to the communication device 919 is composed of a network connected by wire or wireless, and may be, for example, the Internet, a home LAN, infrared communication, radio wave communication, satellite communication, or the like. ..

As described above, an example of the hardware configuration capable of realizing the function of the carbon adhesion state analysis device 100 according to the embodiment of the present invention has been shown. Each of the above-mentioned components may be configured by using general-purpose members, or may be configured by hardware specialized for the function of each component. Therefore, it is possible to appropriately change the hardware configuration to be used according to the technical level at each time when the present embodiment is implemented.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that a person having ordinary knowledge in the field of technology to which the present invention belongs can come up with various modifications or modifications within the scope of the technical idea described in the claims. , These are also naturally understood to belong to the technical scope of the present invention.

10 Actual data storage unit 100 Carbon adhesion state analyzer 110 Analysis processing unit 111 Carbon judgment unit 113 Category carbon adhesion area calculation unit 115 Appropriate range calculation unit 120 Judgment processing unit 121 Judgment carbon judgment unit 123 Judgment division carbon adhesion area calculation unit 125 Adhesion state judgment unit

Claims (8)

A carbon determination unit that analyzes multiple furnace wall images acquired as actual data in the past operation of the coke oven and determines the carbon adhesion state in each furnace wall image.
Based on the determination result of carbon deposition conditions, the segmented region of the multiple set for the furnace wall image, divided carbonaceous deposit area calculation for calculating a partitioning of carbon deposition area carbon for each said segment region is attached Department and
For each of the division regions, the correlation between the division carbon adhesion area and the coke extrusion load is calculated, and based on the correlation, the appropriate carbon adhesion area of the division region where the coke extrusion load is equal to or less than the control value is determined. Appropriate range calculation unit to calculate and
A carbon adhesion state analyzer equipped with. The carbon adhesion according to claim 1, wherein the division carbon adhesion area calculation unit divides the furnace wall image in at least one direction of the coke extrusion direction or the height direction of the furnace wall to set the division region. State analyzer. The appropriate range calculation unit calculates the correlation between the division carbon adhesion area of the division region and the coke extrusion load by using the probability distribution correlation analysis method or the quantile regression model, according to claim 1 or 2. The carbon adhesion state analyzer described. For the furnace wall image for determining whether or not the carbon adhesion state is appropriate, the division carbon adhesion area in the division region is calculated.
A determination to determine whether or not the furnace wall in the classification region is in an appropriate carbon adhesion state by comparing the calculated division carbon adhesion area with the appropriate carbon adhesion area calculated by the appropriate range calculation unit. The carbon adhesion state analysis apparatus according to any one of claims 1 to 3, further comprising a processing unit. When the calculated classified carbon adhering area deviates from the appropriate carbon adhering area, the determination processing unit applies the classified carbon adhering area to the furnace wall according to the correlation between the classified carbon adhering area and the coke extrusion load. The carbon adhesion state analysis apparatus according to claim 4, wherein the air amount of the lance for adjusting the adhesion amount of carbon is adjusted. A carbon determination step that analyzes a plurality of furnace wall images acquired as actual data in the past operation of the coke oven and determines the carbon adhesion state in each furnace wall image, and
Based on the determination result of carbon deposition conditions, the segmented region of the multiple set for the furnace wall image, divided carbonaceous deposit area calculation for calculating a partitioning of carbon deposition area carbon for each said segment region is attached Steps and
For each of the division regions, the correlation between the division carbon adhesion area and the coke extrusion load is calculated, and the appropriate carbon adhesion area of the division region where the coke extrusion load is equal to or less than the control value based on each correlation. And the appropriate range calculation step to calculate
Carbon adhesion state analysis method including. Computer,
A carbon determination unit that analyzes multiple furnace wall images acquired as actual data in the past operation of the coke oven and determines the carbon adhesion state in each furnace wall image.
Based on the determination result of carbon deposition conditions, the segmented region of the multiple set for the furnace wall image, divided carbonaceous deposit area calculation for calculating a partitioning of carbon deposition area carbon for each said segment region is attached Department and
For each of the division regions, the correlation between the division carbon adhesion area and the coke extrusion load is calculated, and the appropriate carbon adhesion area of the division region where the coke extrusion load is equal to or less than the control value based on each correlation. Appropriate range calculation unit to calculate
A computer program that functions as a carbon adhesion state analyzer. On the computer
A carbon determination unit that analyzes multiple furnace wall images acquired as actual data in the past operation of the coke oven and determines the carbon adhesion state in each furnace wall image.
Based on the determination result of carbon deposition conditions, the segmented region of the multiple set for the furnace wall image, divided carbonaceous deposit area calculation for calculating a partitioning of carbon deposition area carbon for each said segment region is attached Department and
For each of the division regions, the correlation between the division carbon adhesion area and the coke extrusion load is calculated, and the appropriate carbon adhesion area of the division region where the coke extrusion load is equal to or less than the control value based on each correlation. Appropriate range calculation unit to calculate
A computer-readable recording medium on which a program for functioning as a carbon adhesion state analyzer is recorded.

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