JP6287481B2 - Crack measuring method and crack repairing method for furnace body - Google Patents

Description

  The present invention relates to a crack measurement method and a crack repair method for a partition wall that separates a combustion chamber and a carbonization chamber, which are a furnace body of a coke oven.

  A coke oven for carbonizing coal to produce coke is configured by alternately arranging carbonization chambers and combustion chambers separated by partition walls in which refractory bricks are stepped and fixed with dowels. In a coke oven, coal is charged from a coal charging port above the carbonization chamber, and the coal chamber charged with coal is heated by an adjacent combustion chamber to dry-distill the coal. After completion of dry distillation, the formed coke is extruded from the carbonization chamber by an extruder from the side of the carbonization chamber.

  The furnace body of such a coke oven is made of a refractory, but the partition wall of the carbonization chamber repeatedly undergoes thermal contraction due to temperature fluctuations from 400 ° C. to 1200 ° C. due to the dry distillation cycle. For this reason, the firebrick which comprises a partition receives a thermal stress repeatedly, and when this thermal stress exceeds the allowable stress of a firebrick, a crack will arise in a firebrick. When cracks occur in the refractory brick, the strength of the partition walls decreases, and the refractory brick may fall off due to the side pressure applied when the coke is extruded, or even collapse over a wide range. In addition, pulverized coal charged into the carbonization chamber may flow into the combustion chamber due to penetration of cracks generated in the partition walls, and the pulverized coal that flows in may flow out of the chimney together with the combustion exhaust gas. Therefore, it is necessary to properly grasp the damaged state of the partition wall and repair the damaged part.

  Conventionally, in a coke oven, the damage state of a furnace body such as a crack in a partition wall is generally grasped by observing a wall surface of a carbonization chamber photographed using a CCD camera or the like. For example, in Patent Document 1, a light beam is irradiated onto a partition wall of a carbonization chamber, light information on the partition surface including reflected light of the irradiated light beam is detected by a furnace wall light detection device, and the reflected light state of the light beam is detected. Discloses a hole detection device for determining the presence or absence of a hole in a partition wall.

JP 2004-168958 A

  However, when a partition wall is observed using a CCD camera as in Patent Document 1, a precision device such as a CCD camera is used in a high-temperature environment, so the device itself is expensive and a cooling device must be installed. . Moreover, only the site | part which installed the apparatus can be observed, and even if the crack of a partition is detected, it is difficult to grasp | ascertain whether the magnitude | size of a crack and the crack have penetrated. Furthermore, the timing at which the partition walls can be observed is limited, and the state of the partition walls cannot be grasped continuously.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a crack measuring method for a furnace body capable of easily measuring the size of a crack generated in a partition wall, and An object of the present invention is to provide a crack repairing method for appropriately repairing a crack in a partition wall.

In order to solve the above problems, according to an aspect of the present invention, there is provided a crack measurement method for measuring the size of a crack generated in a partition wall that separates a combustion chamber and a carbonization chamber of a coke oven. In this crack measurement method, the particle size distribution of the coal charged into the coke oven is measured in advance, the soot concentration contained in the exhaust gas generated in the coke oven for the dry distillation of coal is measured, and the coal particle size distribution and soot concentration are measured. the particle size of the particle size of the coal is high correlation between the, and the size of the cracks caused in the partition wall of the coke oven.

  The soot concentration may be measured by a soot concentration meter installed in the flue where the exhaust gas generated in the coke oven is discharged.

Moreover, in order to solve the said subject, according to another viewpoint of this invention, the crack repairing method of repairing the crack which arose in the partition which divides the combustion chamber and carbonization chamber of a coke oven is provided. In such a crack repair method, the particle size distribution of the coal charged into the coke oven is measured in advance, the smoke concentration contained in the exhaust gas generated in the coke oven for the carbonization of coal is measured, and the coal particle size distribution and the smoke concentration are measured. high granularity of the particle size of the correlation is coal, and the size of the crack generated in the partition wall of the coke oven, blowing joint material particle size corresponding to the size of the crack in the carbonization chamber, septum crack between the To fill.

  As described above, according to the present invention, the size of a crack generated in a partition wall can be easily measured. Moreover, according to the magnitude | size of a crack, the crack of a partition can be repaired appropriately.

It is explanatory drawing which shows schematic structure of the coke oven which concerns on embodiment of this invention. It is explanatory drawing which shows the mechanism in which soot is generated from a combustion chamber, Comprising: The state after coke extrusion is shown. It is explanatory drawing which shows the mechanism in which soot is generated from a combustion chamber, Comprising: The process of removing the carbon adhering to a partition is shown. It is explanatory drawing which shows the mechanism in which soot generate | occur | produces from a combustion chamber, Comprising: The state immediately after charging coal in a carbonization chamber is shown. It is explanatory drawing which shows the mechanism in which soot is generated from a combustion chamber, Comprising: The state after predetermined time progress is shown from coal insertion. It is a flowchart which shows the crack measurement process and crack repair process which concern on the same embodiment. As an Example, the graph of the relationship between the particle size distribution and the smoke density | concentration whose particle size of charging coal is 0.1 mm or less is shown. As an Example, the graph of the relationship between the particle size distribution and the smoke density | concentration with the particle size of charging coal 0.3 mm or less is shown.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

<1. Schematic configuration of coke oven>
First, a schematic configuration of a coke oven 100 according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is an explanatory diagram showing a schematic configuration of a horizontal chamber furnace type coke oven 100 according to the present embodiment.

  The coke oven 100 is a facility for producing coke by dry distillation of coal. The coke oven 100 includes a partition wall (reference numeral 140 in FIG. 3) in which a carbonization chamber 110 charged with coal to be carbonized and a combustion chamber 120 for carbonizing the coal charged to the carbonization chamber 110 are formed of refractory bricks. 140A-140D)).

  Coal charged to the carbonization chamber 110 from above (charged coal) is carbonized at a high temperature of about 1000 to 1200 ° C. for 10 to 20 hours to become coke 5. The coke 5 is extruded in the horizontal direction from one side of the carbonization chamber 110 by the extruder 130 and discharged outside the furnace.

  On the other hand, the combustion chamber 120 supplies heat necessary for dry distillation of the charged coal to the adjacent carbonization chamber 110. Fuel gas is supplied from the gas supply unit 150 to the combustion chamber 120. Further, combustion air is supplied from the combustion air supply unit 160 to the combustion chamber 120 via the heat storage chamber 170, and the fuel gas is combusted in the combustion chamber 120.

  The combustion exhaust gas generated at this time is discharged to the flue 175 through the heat storage chamber 170. In the heat storage chamber 170, heat exchange is performed between the high-temperature combustion exhaust gas discharged from the combustion chamber 120 and the combustion air or fuel gas supplied to the combustion chamber 110. The flue 175 is connected to the ground flue 10 in the factory, and the combustion exhaust gas passes from the flue 175 through the ground flue 10 and is discharged from the chimney 20.

  A smoke concentration meter (light transmission type smoke concentration meter) 180 for measuring the concentration of smoke contained in the combustion exhaust gas is installed in the flue 175. The soot concentration meter 180 is a device that can continuously measure the soot concentration based on the light transmittance measured by combining a projector and a light receiver. The soot concentration is expressed as Ringermann concentration. The Ringerman concentration is expressed in the range of 0 to 5 degrees. When the light transmittance is 100%, the Ringerman concentration is 0 degree. As the light transmittance decreases, the Ringerman concentration increases. When the transmittance is 0%, the Ringermann concentration is 5 degrees.

  The installation position of the soot concentration meter 180 is not particularly limited. For example, the flue gas from all the combustion chambers 120 of the coke oven 100 is aggregated, and the ground flue 10 or the flue 175 communicating with the ground flue 10 is collected. When the soot concentration meter 180 is provided, the soot concentration of the entire coke oven 100 can be measured. Further, for example, when the soot concentration meter 180 is provided in the flue provided for each combustion chamber 120 of the coke oven 100, the soot concentration of the combustion exhaust gas can be measured for each combustion chamber 120.

<2. Crack measurement method and crack repair method for coke oven furnace>
Next, a crack measuring method and a crack repairing method for the furnace body of the coke oven 100 according to the present embodiment will be described.

[2-1. Smoke generation mechanism]
The crack measuring method of the furnace body according to the present embodiment is based on the relationship between the particle size of the coal charged into the carbonization chamber 110 of the coke oven 100 and the soot contained in the combustion exhaust gas generated in the coke oven 100. Is to measure. Therefore, prior to the description of the method for measuring cracks in the furnace body according to the present embodiment, a mechanism in which soot is included in the combustion exhaust gas generated in the coke oven 100 will be described based on FIGS. 2 to 5 are explanatory views showing a mechanism for generating soot from the combustion chamber 120, FIG. 2 shows a state after coke extrusion, and FIG. 3 is a process of removing carbon adhering to the partition wall 140. 4 shows a state immediately after charging coal into the carbonization chamber 110, and FIG. 5 shows a state after a predetermined time has elapsed since the charging of coal.

  Regarding the coke oven 100 shown in FIG. 1, FIGS. 2 to 5 schematically show two carbonization chambers 110 </ b> A and 110 </ b> B and a combustion chamber 120 </ b> A formed by four partition walls 140 </ b> A to 140 </ b> D. Each of the partition walls 140 </ b> A to 140 </ b> D is configured by incorporating the refractory bricks 142 in steps and fixing them with dowels. The joints 144 between the stacked refractory bricks 142 are jointed and closed.

  The partition walls 140 </ b> A to 140 </ b> D may have a crack 145 due to repeated thermal contraction. When the crack 145 penetrates, the carbonization chamber 110A and the combustion chamber 120A communicate with each other. For example, as shown in FIG. 2, coke is formed from coal, and the coke is extruded to form an empty kiln. , 140B, fine powder at the time of coal dry distillation is attached as carbon 7. The crack 145 in the region where the carbon 7 is adhered is blocked by the carbon 7, and the carbonization chamber 110A and the combustion chamber 120A are separated. In addition, in the vicinity where the surface temperature of the partition 140B is lower than that of the other portions as in the upper portion of the partition 140B in FIG. 2, the carbon 7 is difficult to adhere to the surface of the partition 140B and becomes thin.

  When coke is pushed out from the carbonization chamber 110A, as shown in FIG. 3, the incinerator 125 is inserted into the carbonization chamber 110A that has become an empty kiln, and air is injected into the carbonization chamber 110A. Thereby, the carbon 7 adhering to the partition walls 140 </ b> A and 140 </ b> B is incinerated, and the carbon 7 covering the joints 144 and the cracks 145 disappears. That is, the cracks 145 of the partition walls 140A to 140D may penetrate and the carbonization chamber 110A and the combustion chamber 120A may communicate with each other. In particular, this phenomenon is remarkable at the upper part of the partition wall 140B, that is, the upper part of the carbonization chamber 110A or 110B.

  As shown in FIG. 4, coal 3 is newly charged into the empty kiln (carbonization chamber 110 </ b> A) after the carbon 7 attached to the partition walls 140 </ b> A and 140 </ b> B has been incinerated. At this time, when the coal comes into contact with the furnace bottom and partition walls in the carbonization chamber 110A, the contact portion and the coal in the vicinity thereof are gasified to increase the pressure in the carbonization chamber 110A. The gas in the carbonization chamber 110A flows into the combustion chamber 120A having a low pressure through the crack 145. At this time, a part of the pulverized coal charged into the carbonization chamber 110A is included in the gas flow and tends to flow into the combustion chamber 120A. Here, of the pulverized coal contained in the gas flow, the pulverized coal having a size (particle size) that can pass through the crack 145 passes through the crack 145 and flows into the adjacent combustion chamber 120A. The combustion exhaust gas containing pulverized coal that has flowed into the combustion chamber 120 </ b> A flows into the flue 175, passes through the external flue 10, and is discharged from the chimney 20. Combustion exhaust gas containing pulverized coal is also called soot.

  The pulverized coal flowing into the combustion chamber 120A does not burn in the combustion chamber 120A because the temperature of the upper portion of the combustion chamber 120A corresponding to the upper portion of the carbonization chamber 110A or 110B is low (about 200 ° C. to 300 ° C.), This is because the amount of oxygen is also reduced.

  On the other hand, the pulverized coal having a large particle diameter that cannot pass through the crack 145 gradually clogs the crack 145, and when a predetermined time (for example, about 10 minutes) elapses from the coal charging, as shown in FIG. The crack 145 generated in the partition wall 140B between 110A and the combustion chamber 120A is closed. Therefore, the pulverized coal flowing into the combustion chamber 120A also gradually decreases, and thereafter the pulverized coal is not contained in the combustion exhaust gas.

  Thus, the pulverized coal discharged to the outside from the coke oven 100 leaks into the combustion chamber 120 from the cracks 145 generated in the refractory bricks 142 of the partition wall 140 due to the coal pulverized powder charged into the carbonization chamber 110. It is discharged together with the exhaust gas.

[2-2. Crack measurement method]
The inventor of the present application pays attention to the above-described mechanism of soot generation, and analyzes the relationship between the particle size distribution of the coal charged into the carbonization chamber 110 and the soot concentration of the soot, thereby determining the size of the crack 145 generated in the partition wall 140. I came up with a specific idea. Here, the “crack size” refers to the opening width of the crack 145 (also referred to as “crack width”), and can be, for example, the maximum particle size that can pass through the crack 145. The soot is generated when the fine coal powder charged into the carbonization chamber 110 leaks from the crack 145 generated in the partition wall 140, so that it is considered that the soot does not substantially contain fine powder having a particle size that cannot pass through the crack 145.

  Therefore, in the crack measurement method for a furnace body according to this embodiment, first, the particle size distribution of coal previously charged in the carbonization chamber 110 is measured. And the smoke density | concentration of the smoke produced | generated after charging this coal into the carbonization chamber 110 is measured, and the correlation with the particle size distribution of the charged coal measured beforehand is taken. When these correlations are observed for each particle size, the particle size of the fine powder having a high correlation corresponds to the size of the crack 145, and the size of the crack 145 can be specified.

  Hereinafter, based on FIG. 6, the crack measuring method of the furnace body which concerns on this embodiment is demonstrated in detail. First, the particle size distribution of the coal charged into the carbonization chamber 110 is measured in advance (S100). The particle size of the coal charged into the carbonization chamber 110 is generally 2 to 3 mm or less (excluding agglomerated coal). The particle size of the charged coal can be classified into fine particles, fine particles, medium particles, coarse particles, and the like. More specifically, for example, the particle size may be defined by the particle size of the charged coal such as 0.1 mm or less, 0.3 mm or less, 0.5 mm or less, 1.0 mm or less, or more than 1.0 mm. . In step S100, the ratio in which the pulverized coal of each particle size is included in the charging coal is obtained.

  Next, the soot concentration of the combustion exhaust gas discharged from the coke oven 100 is measured by the soot concentration meter 180 (S110). The soot concentration may be measured continuously, for example, or may be measured at the timing when charged coal is charged into the carbonization chamber 110. In the present embodiment, the soot density is measured using the soot density meter 180 installed in the flue 175, so that the soot density can be continuously measured. The soot concentration meter 180 outputs the measured soot concentration to an information processing device (not shown).

  When the soot concentration of the combustion exhaust gas is measured, the correlation between the particle size distribution of the charging coal previously acquired in step S100 and the soot concentration measured in step S120 is analyzed (S120). The processing may be performed by, for example, an information processing device that outputs a measurement result by the soot concentration meter 180, or may be a separate unit that manages the particle size distribution of the charging coal and the soot concentration measured by the soot concentration meter 180. You may perform by a terminal etc. In step S120, for example, every time coal is charged into any one of the coking ovens 110 of the coke oven 100, for each particle size of the charged coal, the relationship between the ratio contained in the charged coal and the measured smoke concentration is determined. take.

  The processing of steps S100 to S120 is repeatedly executed, and each time one cycle is executed, one relationship between the ratio contained in the charging coal and the measured smoke concentration is acquired for each particle size of the charging coal. The process of step S100 is periodically performed (for example, once every shift (about four times a day)), and after obtaining the particle size distribution of the charging coal again, it is measured as a ratio included in the charging coal. Try to get a relationship with the smoke concentration. It is sufficient that the number of data on the relationship between the particle size of the charged coal and the smoke concentration is about 50 to 250 for each particle size from the determination accuracy.

  Thereafter, the particle size having the highest correlation is specified from the relationship between the ratio of the charged coal for each particle size obtained in step S120 and the measured soot concentration, and the size of the crack generated in the partition 140 Is identified (S130).

  The soot concentration meter 180 can grasp the magnitude of the soot concentration (that is, the proportion of pulverized coal contained in the combustion exhaust gas). The state in which the proportion of the charged coal and the measured smoke concentration is high is that the amount of the differential coal having the particle size contained in the charged coal is large, the amount discharged to the flue 175 is large. The soot concentration increases, and if the proportion contained in the charging coal is small, the amount discharged to the flue 175 is small and the soot concentration decreases. That is, it can be said that the pulverized coal having the particle size can flow out to the combustion chamber 120 through the crack 145 of the partition wall 140.

  On the other hand, a state in which the correlation between the proportion contained in the charging coal and the measured smoke concentration is low means that the amount of differential coal having the particle size discharged to the flue 175 is almost equal to the amount contained in the charging coal. There is no change and the relationship with the change in smoke concentration is low. Further, if the particle size of the pulverized coal is smaller than the size of the crack 145, it is possible to pass through the crack 145. Therefore, the pulverized coal having a particle size having a low correlation cannot pass through the crack 145.

  Therefore, it is thought that the crack 145 of the magnitude | size corresponding to the pulverized coal of a particle size with a high correlation with the ratio contained in the charging coal about each particle size and the measured smoke density | concentration is formed. For example, when there is a high correlation between the proportion of pulverized coal having a particle size of 0.1 mm or less and the concentration of soot and the soot concentration, cracks 145 of about 0.1 mm are generated in the partition wall 140. Can be specified. For example, when there is a high correlation between the proportion of pulverized coal having a particle size of 0.3 mm or less and the concentration of soot and the soot concentration, cracks 145 of about 0.3 mm are generated in the partition wall 140. Can be identified. In addition, when there is a high correlation between the ratio of the pulverized coal having a particle size of 0.3 mm or less and the soot concentration contained in the charging coal, the pulverized coal having a particle size of 0.1 mm or less is used as the charging coal. A high correlation also appears in the ratio of inclusion and smoke concentration. As described above, the size of the crack 145 generated in the partition wall 140 can be measured from the particle size of the pulverized coal that has passed through the crack 145.

  The method for measuring the size of the crack 145 according to the present embodiment does not specify the position or size of the crack 145 for each partition 140 constituting the coke oven 100, but the size of the crack 145 generated in the partition 140. This is an effective measurement method for identifying trends.

  The relationship between the particle size distribution of the charged coal obtained by the crack measurement method according to the present embodiment and the soot concentration varies somewhat depending on the installation position of the soot concentration meter 180 and the carbonization chamber 110 into which the coal is charged. For example, when the soot concentration meter 180 is provided on the flue 175 through which only the soot discharged from the combustion chamber 120 adjacent to the carbonization chamber 110 charged with coal passes, the combustion of the carbonization chamber 110 charged with coal and the combustion is performed. The tendency of the size of the crack 145 generated in the partition wall 140 between the chamber 120 and the chamber 120 can be grasped. Further, for example, when the soot concentration meter 180 is provided on the flue 175 where the soot discharged from all the combustion chambers 120 of the coke oven 100 is collected, cracks generated in all the partition walls 140 constituting the coke oven 100. The average size of 145 can be grasped.

  In addition, the crack measuring method which concerns on this embodiment can measure the magnitude | size of the crack 145 from the particle size distribution of charging coal, and the smoke density | concentration measured by the smoke density meter 180. FIG. Since the soot concentration meter 180 can be always installed in the flue 175, the soot concentration can be continuously measured. Therefore, for example, by acquiring these relationships over a long period of six months to several years, it is possible to grasp the change in the size of the crack 145. In addition, as described above, even when the soot concentration meter 180 is installed on the flue 175 where the soot discharged from all the combustion chambers 120 of the coke oven 100 is collected, the coking chamber 110 and the equipment for charging coal are installed. By specifying the input timing, the crack size of the specific partition wall 140 can be specified using the measurement result of the smoke concentration meter 180.

[2-3. Crack repair method]
By specifying the size of the crack 145 by the crack measurement method according to the present embodiment, a repair process for closing the crack 145 can be appropriately performed (S140). Repair of the crack 145 generated in the partition wall 140 of the coke oven 100 is performed by dry sealing that blows the joint material into the carbonization chamber 110 and causes the joint material suspended in the carbonization chamber 110 to enter the crack 145 and close the crack 145, for example. Is called. Examples of joint materials include mortar and fiber joint materials.

  In order to appropriately repair the crack 145 of the partition wall 140, it is necessary to use a joint material suitable for the size of the crack 145. If a joint material having a particle size larger than the size of the crack 145 is used, the joint material does not enter the crack 145, so that the crack 145 cannot be reliably closed. Therefore, in the present embodiment, the crack 145 is formed using a joint material having a particle size smaller than the size of the crack 145 based on the size of the crack in the partition wall 140 measured from the correlation between the particle size distribution of the charged coal and the smoke concentration. Repair. As a result, the joint material can surely enter the crack 145 to close the crack.

  A plurality of joint materials having different particle diameters may be used as joint materials used for repairing the crack 145. In this case, the particle diameter of these joint materials is preferably smaller than the size of the crack 145, and repair is preferably performed by blowing into the carbonization chamber 110 in order from the joint material having a smaller particle diameter.

<3. Summary>
In the above, the crack measuring method of the furnace body of the coke oven 100 which concerns on this embodiment was demonstrated. According to the present embodiment, the correlation between the particle size distribution of the charged coal and the soot concentration is analyzed, and the size of the particle size having the highest correlation is specified as the size of the crack 145, which is generated in the furnace body. It is possible to grasp the average size of the cracks 145 that pass through. Further, the smoke concentration can be continuously measured, and the change in the size of the crack 145 over time can be grasped. Furthermore, based on the size of the crack 145 measured by the crack measuring method according to the present embodiment, a joint material for repairing the crack 145 can be appropriately selected.

  As an example, in the whole coke oven, the particle size distribution of coal charged in the carbonization chamber and the soot concentration meter (light transmission type soot concentration continuous measuring device (DSM5100A SERIES, manufactured by Daito Keiki Co., Ltd.)) The relationship with concentration was examined. In this example, the smoke concentration was measured at a position where the smoke discharged from all the combustion chambers of the coke oven was collected. The particle size distribution of coal is measured once for each shift (four times a day), and the soot concentration measurement with a soot concentration meter is performed each time coal is charged into each carbonization chamber, and the result is determined for each particle size. Mapping was performed to see the relationship between the particle size distribution of the charged coal and the smoke concentration. The results are shown in FIG. 7 and FIG. In addition, the number of data of the relationship between each particle size and soot density of charging coal is 200 each.

  FIG. 7 is a graph showing the relationship between the particle size distribution of the charged coal with a particle size of 0.1 mm or less and the smoke concentration, and FIG. 8 shows the relationship between the particle size distribution of the charged coal with a particle size of 0.3 mm or less and the smoke concentration. It is a graph. First, as shown in FIG. 7, when the relationship between the particle size distribution of the charged coal having a particle size of 0.1 mm or less and the soot concentration is expressed by a linear function using the least square method, each plot is approximately a linear function calculated. They are gathered along with small variations and high correlation. On the other hand, regarding the relationship between the particle size distribution of 0.3 mm or less and the soot concentration, when a linear function is obtained by the least square method, the plot variation is large and the relevance to the linear function is low as shown in FIG. .

  From this, in this example, since there is a high correlation between the particle size distribution of the charged coal with a particle size of 0.1 mm or less and the soot concentration, the average size of cracks occurring in the partition wall of the coke oven is It can be specified as 0.1 mm.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

3 Coal 5 Coke 7 Carbon 10 External flue 20 Chimney 100 Coke oven 110 Coking chamber 120 Combustion chamber 125 Incinerator 130 Extruder 140 Bulkhead 142 Refractory brick 144 Joint 145 Crack 150 Gas supply section 160 Combustion air supply section 170 Thermal storage chamber 175 Smoke Road 180 Smoke concentration meter

Claims (3)

A crack measurement method for measuring the size of a crack generated in a partition wall that separates a combustion chamber and a carbonization chamber of a coke oven,
Pre-measure the particle size distribution of the coal charged into the coke oven,
Measure the soot concentration contained in the exhaust gas generated in the coke oven for carbonization of the coal,
From the correlation between the particle size distribution of the coal charged into the coke oven and the smoke concentration, the particle size of the coal particle size having a high correlation between the particle size distribution of the coal and the smoke concentration is determined as the coke. A crack measurement method in which the size of a crack generated in a partition wall of a furnace is used. The crack measuring method according to claim 1 , wherein the smoke concentration is measured by a smoke concentration meter installed in a flue from which exhaust gas generated in the coke oven is discharged. A crack repairing method for repairing a crack generated in a partition wall that separates a combustion chamber and a carbonization chamber of a coke oven,
Pre-measure the particle size distribution of the coal charged into the coke oven,
Measure the soot concentration contained in the exhaust gas generated in the coke oven for carbonization of the coal,
From the correlation between the particle size distribution of the coal charged into the coke oven and the smoke concentration, the particle size of the coal particle size having a high correlation between the particle size distribution of the coal and the smoke concentration is determined as the coke. the size of a crack generated in the furnace of the partition wall,
A crack repairing method in which joint material having a particle size corresponding to the size of the crack is blown into the carbonization chamber to fill the crack in the partition wall.

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