JP2018172469A - Carbonization time calculation device for kiln in coke oven, carbonization time calculation program, and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To calculate a carbonization time of a normal kiln to enable optimization of operation thereof according to a possible operation time and the number of abnormal kilns.SOLUTION: A method of calculating a carbonization time, which is a method of calculating a time of carbonization i.e, dry distillation of coal charged into a normal kiln that can continuously carry out a kiln discharge process including a coal charging process and a coke extruding process in a coke oven 100 in which a plurality of kilns 110 are disposed adjacent to each other to carbonize the charged coal to produce coke, comprises the steps of: acquiring operation parameters including a possible operation time showing a time when the coke oven can be operated per a unit time; acquiring the number of abnormal kilns each requiring a longer carbonization time relative to a normal kiln; calculating carbonization time information relating to the carbonization time of the normal kilns making use of the correlation of the carbonization time of the normal kilns with the possible operation time and the number of abnormal kilns; and outputting the calculated carbonization time information.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a carbonization time calculation device, a carbonization time calculation program, and a method thereof for a coke oven.

  Various techniques for improving the operability of the coke oven are known (see, for example, Patent Documents 1 to 7). In Patent Document 1, a heat storage medium is disposed in the vicinity of the contact surface of the coke oven lid with coal, and the heat stored in the heat storage medium when the end temperature in the latter half of dry distillation is high and the stored heat is the end heat in the initial stage of dry distillation. Is described, heat is released from the heat storage medium to heat the furnace cover contact portion. The technique described in Patent Document 1 is to prevent the condensation of tar by keeping the vicinity of the furnace lid at a temperature higher than the tar condensation temperature at the time when a large amount of hydrocarbons are generated at an early stage. Can be prevented from deteriorating.

  In Patent Documents 2 and 3, the energy generated in the coke oven is maximized by reducing the amount of fuel gas necessary for dry distillation treatment from the amount of gas generated when carbonizing raw coal to the maximum. The technology to be used effectively is described.

  Further, in Patent Documents 4 to 7, the probability of clogging when coke is extruded is estimated, and the estimated probability of clogging is used to load a normal kiln capable of continuous extrusion. Techniques such as determining the carbonization time for carbonizing coal and the operation schedule are described.

JP-A-6-212157 JP 9-316453 A JP 9-316454 A JP 2012-46679 A JP 2012-52363 A JP 2012-171969 A JP 2012-172143 A

  In operation in a coke oven, it is operated at a lower furnace temperature than a normal kiln because it is after repair and the combustibility deteriorates due to aging and the furnace temperature cannot be raised. There may be a flying kiln that operates for a long time.

  The technique described in Patent Document 6 uses the probability of occurrence of clogging in determining the carbonization time of a normal kiln, but does not consider the number of flying kilns, so the carbonization time for carbonizing coal charged in the normal kiln It is not easy to estimate accurately.

  In one embodiment, it aims at providing the carbonization time calculation method which calculates the carbonization time of a normal kiln so that it can optimize according to the operation time and the number of flying kilns.

The gist of the present invention for solving such problems is a carbonization time arithmetic apparatus and method described below.
(1) In a coke oven in which a plurality of kilns that produce coke by dry distillation of charged coal are arranged adjacently, kiln discharge processing including coal charging processing and coke extrusion processing is continuously performed. A method for calculating a carbonization time for carbonizing coal charged in a possible ordinary kiln,
Acquire operation parameters including the operation time indicating the time per unit time that the coke oven can operate,
Obtain the number of flying kilns whose carbonization time is longer than the carbonization time of normal kilns,
Calculate the carbonization time information related to the carbonization time of the normal kiln using the correlation between the operation time and the number of flying kilns and the carbonization time of the normal kiln,
Output the calculated carbonization time information,
The carbonization time calculation method characterized by including these things.
(2) Calculate the number of kilns per unit time of the coke oven from the calculated carbonization time information and the number of flying kilns,
The carbonization time calculation method according to (1), further including outputting the calculated number of kilns.
(3) Carbonization time information is the carbonization time calculation method as described in (1) or (2) which is the information which shows the operation rate of the normal kiln per unit time.
(4) The correlation includes a carbonization time arithmetic expression obtained by dividing the operable time by the kiln out-round time indicating the time required to execute the kiln removal processing of all kilns capable of performing the kiln removal processing (1 The carbonization time calculation method according to any one of (1) to (3).
(5) The operation possible time is the carbonization time calculation method according to any one of (1) to (4), which is a time obtained by subtracting an operation interruption time indicating a time during which the coke oven is not operated from a unit time.
(6) The kiln departure round time is the total time of the set-up time indicating the preparation time for the kiln removal process and the sum of the execution times of each kiln removal process of the kiln capable of performing the kiln removal process. The carbonization time calculation method according to any one of (4) and (5).
(7) In a coke oven in which a plurality of kilns that produce coke by dry distillation of charged coal are arranged adjacently, kiln discharge processing including coal charging processing and coke extrusion processing is continuously performed. Carbonization time calculation for calculating the carbonization time for carbonizing coal charged in a possible ordinary kiln,
An operation parameter acquisition unit for acquiring an operation parameter including an operation time indicating a time per unit time in which the coke oven can be operated;
A flying kiln number acquisition unit for acquiring the number of flying kilns whose carbonization time is longer than that of a normal kiln,
Carbonization time information calculation unit that calculates carbonization time information related to the carbonization time of the normal kiln, using the correlation between the operable time and the number of flying kilns, and the carbonization time of the normal kiln,
A carbonization time information output unit for outputting the calculated carbonization time information;
A carbonization time calculation device comprising:
(8) In a coke oven in which a plurality of kilns for producing coke by dry distillation of the charged coal are arranged adjacently, kiln discharge processing including coal charging processing and coke extrusion processing is continuously performed. A process for calculating the carbonization time for carbonizing coal charged in a possible ordinary kiln,
Acquire operation parameters including the operation time indicating the time per unit time that the coke oven can operate,
Obtain the number of flying kilns whose carbonization time is longer than the carbonization time of normal kilns,
Calculate the carbonization time information related to the carbonization time of the normal kiln using the correlation between the operation time and the number of flying kilns and the carbonization time of the normal kiln,
Output the calculated carbonization time information,
A carbonization time calculation program that causes a computer to execute processing.

  In one embodiment, the carbonization time of a normal kiln can be calculated so that it can be optimized according to the operating time and the number of flying kilns.

It is a schematic plan view of a coke oven. It is a disassembled perspective view of the kiln of the coke oven shown in FIG. It is a perspective view of the kiln of the coke oven shown in FIG. It is sectional drawing of the coke oven shown in FIG. It is a figure which shows the flow of coke production | generation operation in the kiln shown in FIG. (A) is a figure which shows the kiln process of order 1 of an operation schedule on the furnace arrangement | positioning of a coke oven, (b) shows the kiln process of order 1 and 4 of an operation schedule on a time-axis. It is a figure and (c) is a figure which shows the operation schedule over several cycles with a time-axis. (A) is a figure which shows on the furnace arrangement | positioning of a coke oven in the order of 1 and 4 in order when the kiln of kiln number "6" is a flying kiln, (b) is (a). It is a figure which shows the kiln removal process shown on a time axis | shaft, (c) is a figure which shows the operation schedule shown to (b) on a time axis over several cycles. It is a figure which shows the correlation with the number of flying kilns calculated using Formula (4), and the number of kilns per day of a coke oven. It is a block diagram of the carbonization time arithmetic device according to the first embodiment. It is a flowchart of the carbonization time calculation process by the carbonization time calculation apparatus shown in FIG. It is a block diagram of the configuration of the carbonization time arithmetic device according to the second embodiment. It is a flowchart of the carbonization time calculation process by the carbonization time calculation apparatus shown in FIG.

  Hereinafter, a carbonization time calculation device, a carbonization time calculation program and a method for a coke oven according to the present invention will be described with reference to the drawings. However, the technical scope of the present invention is not limited to these embodiments.

(Coke oven configuration and operation)
Before describing the carbonization time calculation method for a normal kiln according to the embodiment, the configuration and operation of the coke oven will be described.
FIG. 1 is a schematic plan view of a coke oven.

  The coke oven 100 includes an A furnace group 101, a B furnace group 102, a charcoal tank 103, a charging car 104, an extruder 105, a guide car 106, a fire extinguishing train 107, and a coke dry fire extinguishing equipment 108. Have.

  Each of the A furnace group 101 and the B furnace group 102 has 45 kilns 110 arranged adjacent to each other. The 45 kilns 110 included in the A furnace group 101 are given kiln numbers from “1” to “45”. The kiln number of the kiln 110 farthest from the B furnace group 102 of the A furnace group 101 is “1”, and the kiln number increases as the B furnace group 102 is approached thereafter, and the kiln 110 closest to the B furnace group 102. The kiln number is “45”. The 45 kilns 110 included in the B furnace group 102 are assigned kiln numbers from “46” to “90”. The furnace number of the furnace 110 closest to the A furnace group 101 of the B furnace group 102 is “46”, and the furnace number increases as the distance from the A furnace group 101 is increased. The kiln number is “90”.

  The coal tank 103 stores coal as a raw material for coke. The charging vehicle 104 is movable between the kiln 110 and the coal tank 103 of the A furnace group 101 and the B furnace group 102, acquires coal from the coal tank 103, and coke is extruded from the acquired coal. Charge the empty kiln 110. The extruder 105 is movable between the kiln 110 having the kiln number “1” and the kiln having the kiln number “90”, and includes a pair of arm portions 105a and 105b. One arm portion 105a pushes coke from the kiln 110, and the other arm portion 105b flattens the coal charged into the other kiln 110 from the charging vehicle 104. The distance between one arm part 105a and the other arm part 105b corresponds to the distance between the five kilns 110 arranged adjacent to each other. In the example shown in FIG. 1, one arm 105a extrudes coke from the kiln 110 with the kiln number “11”, and the other arm 105b flattens the coal supplied to the kiln with the kiln number “6”. The guide car 106 is movable between the kiln 110 with the number “1” and the kiln with the kiln number “90”, and the fire extinguishing train 107 is coke dry with the kiln 110 of the A furnace group 101 and the B furnace group 102. It can move between the fire extinguishing equipment 108. The coke extruded from the kiln 110 by the extruder 105 is discharged to the fire extinguishing train 107 through the guide wheel 106 and is transported to the coke dry fire extinguishing equipment 108 by the fire extinguishing train 107.

  FIG. 2 is an exploded perspective view of the kiln 110, and FIG. 3 is a cross-sectional view of the coke oven 100 including the kiln 110.

  The kiln 110 includes a carbonization chamber 111, a combustion chamber 112, and a heat storage chamber 113 positioned below the carbonization chamber 111 and the combustion chamber 112. The carbonization chamber 111 is sandwiched between the combustion chambers 112 on both sides, and the coal charged into the carbonization chamber 111 is heated to dry by heating with the heat in the combustion chamber 112 in an environment where air is shut off. Coal charged into the carbonization chamber 111 is charged in the direction indicated by the arrow A in FIG. 2, and coke extruded from the carbonization chamber 111 is extruded in the direction indicated by the arrow B in FIG.

  FIG. 4 is a diagram showing a flow of coke generation in the kiln 110.

  The coke generation process in the kiln 110 is a process of repeating the kiln discharge process including the coke extrusion process by the extruder 105 from the kiln 110 and the coal charging process by the charging vehicle 104 to the kiln every carbonization time. . In one example, the time required for the kiln treatment indicated by the bidirectional arrow C is about 8 minutes, and the carbonization time indicated by the bidirectional arrow D is about 21 to 24 hours.

  FIG. 5 is a diagram illustrating an example of an operation schedule of the coke oven 100.

  The operation schedule 120 has a 1 order 121, a 2 order 122, a 3 order 123, a 4 order 124, and a 5 order 125. The order 121 of 1 is the kiln number “1”, “6”, “11”, “16”... “81” and the kiln 110 whose first place is “1” or “6”. Including kiln out treatment. Similarly, the order of 2 122 includes the kiln processing of the kiln 110 whose first place is “2” or “7”, and the order of 3 is that the first place of the kiln number is “3” or “7”. 8 ”including the kiln exit processing of the kiln 110. Further, the order 124 of 4 includes the firing process of the kiln 110 in which the first place of the kiln number is “4” or “9”, and the order 125 of 5 has the first place of the kiln number “5” or “0”. Including the kiln removal process of the kiln 110.

  In the operation schedule 120, the firing process of the kiln 110 is repeatedly executed in the order of 1 in the order 121, 4 in the order 124, 2 in the order 122, 5 in the order 125, and 3 in the order 123. In each of the 1 order 121, the 4 order 124, the 2 order 122, the 5 order 125, and the 3 order 123, the kiln removal process is sequentially executed from the kiln 110 having the smallest kiln number. The firing process in the order 121 of 1 starts from the firing process of the kiln 110 with the kiln number “1” and ends with the firing process of the kiln 110 with the kiln number “86”. Next, the firing process in the order of 4 is sequentially performed from the kiln 110 having the kiln number “4” to the kiln having the kiln number “89”. Next, the firing process in the order of 2 is sequentially performed from the kiln 110 having the kiln number “2” to the kiln having the kiln number “87”. Next, the process of leaving the kiln in order of 5 is sequentially performed from the kiln 110 with the kiln number “5” to the kiln with the kiln number “90”. Next, the process of leaving the kiln in order of 3 is sequentially executed from the kiln 110 with the kiln number “3” to the kiln with the kiln number “88”. Then, the kiln removal process of the kiln 110 having the first kiln number “1” in the order 124 is performed again.

  In the operation schedule 120, the kiln 110 of the adjacent kiln 110 is executed by executing the kiln 110 firing process in the order of 1 in the order 121, 4 in the order 124, 2 in the order 122, 5 in the order 125, and 3 in the order 123. Preventing the separation time of the dispensing process from being shortened. The kilns 110 included in the 2nd order 122 and the 5th order 125 adjacent to the kiln 110 included in the 1st order 121 are processed by the kilns 110 included in the other order after the 1st order 121 firing process is executed. The kiln removal process is executed across the kiln removal process. Therefore, between the firing process of the kiln 110 included in the first order 121 and the firing process of the kiln 110 included in the second order 122 and the fifth order 125 adjacent to the kiln 110 included in the first order 121. A sufficient separation time can be maintained. In the operation schedule 120, the order 122 of 2, the order 123 of 3, the order 124 of 4, the order 124 of 5, and the order 125 of 5 are similarly removed from the kiln 110 with a sufficient separation time. Can be executed.

  FIG. 6A is a diagram showing the 1st order 121 firing process on the furnace arrangement of the coke oven 100, and FIG. 6B is the time sequence of the 1st order 121 and the 4th order 124 firing process. FIG. 6C is a diagram showing the operation schedule 120 over a plurality of cycles on a time axis.

  In order 1 of operation schedule 120, charging car 104, extruder 105, guide car 106, and fire extinguishing train 107 sequentially move from kiln 110 with kiln number “1” to kiln with kiln number “86”. Thus, the kiln removal process is executed. The furnace discharge processing time in the order 121 indicated by the bidirectional arrow H is the furnace discharge processing time of the A furnace group 101 indicated by the bidirectional arrow E and the furnace discharge time of the B furnace group 102 indicated by the bidirectional arrow F. This is the total time of the processing time and the movement time of the extruder 105 indicated by the bidirectional arrow G.

  In the operation schedule 120, when the firing process of the last kiln 110 with the last kiln number “86” in the order 121 is completed, the operation shifts to the first kiln 110 with the fourth kiln number “4” in the order 124. In FIG. 6B, the travel time from the kiln 110 with the kiln number “86” to the kiln 110 with the kiln number “4” is indicated by a bidirectional arrow I.

  Thereafter, after completion of the kiln removal process and the kiln removal process of the last kiln in the current order, the movement is sequentially repeated to the first kiln in the next order, and the process returns to the kiln 110 with the kiln number “1”. In FIG. 6C, the next kiln number “1” in the first order 121 from the start time of the kiln 110 of the kiln 110 in the first kiln number “1” in the first order 121 indicated by the bidirectional arrow J. The time until the start time of the kiln removal process of the kiln 110 is referred to as one cycle. One cycle of the operation schedule includes the kiln processing time of 125 in order of 1 to 121 to 5 and the movement time between the respective orders. FIG. 6C shows an operation schedule of 4 cycles. In one example, one cycle is about 21 to 24 hours.

  The operation schedule 120 can equalize all the carbonization times of the kiln 110 of the coke oven 100. That is, in the operation schedule 120, the carbonization time from when the coal is charged into the kiln 110 until the coke is extruded from the kiln 110 is the same as one cycle of the operation schedule 120, which is about 21 to 24 hours in one example. It can be a normal time which is a time. The kiln 110, which can be a normal time that is the same time as one cycle, is referred to as a normal kiln. In addition, the normal time which is the carbonization time of a normal kiln may be a fixed time, but may vary within an allowable range.

  On the other hand, the kiln 110 that is operated at a furnace temperature lower than that of a normal kiln due to the fact that it is after repair and that the furnace temperature cannot be raised due to deterioration of flammability is called a flying kiln. The Since the flying kiln is operated with a longer carbonization time than a normal kiln, it is arranged at a different pitch from the normal kiln arranged at a constant pitch in the operation schedule.

  FIG. 7 (a) is a diagram showing on-furnace arrangement of the coke oven 100 in the order 121 in the order 1 and the order 121 in the order 4 when the kiln 110 having the kiln number “6” is a flying kiln. (B) is a figure which shows the kiln leaving process shown to Fig.7 (a) on a time-axis. FIG.7 (c) is a figure which shows the operation schedule shown in FIG.7 (b) on a time-axis over several cycles.

  In the operation schedule 130, since the kiln 110 with the kiln number “6” is a flying kiln, the kiln 110 with the kiln number “6”, which is a flying kiln, is blown out after the kiln 110 with the kiln number “1”. Then, the kiln exit processing of the kiln 110 with the kiln number “11” is executed. However, the extruder 105 extrudes coke with one arm part 105a, and flattens the coal of the kiln 110 that is separated by five with the other arm part 105b. As shown by arrow K in FIG. 7 (b), the extruder 105 is used for flattening the coal of the kiln 110 with the kiln number “1” and extruding the coke of the kiln 110 with the kiln number “11”. Stop at the position corresponding to the kiln 110 of “6”.

  In the operation schedule 140, the first kiln removal process 151 of the kiln 110 having the kiln number “6” which is a flying kiln is executed between the order 141 of 1 and the order 144 of 4. The second kiln removal process 152 of the kiln 110 having the kiln number “6” which is a flying kiln is executed between the order 144 of 4 and the order 142 of 2. The third kiln removal process 153 of the kiln 110 having the kiln number “6” which is a flying kiln is executed between the order 142 of 2 and the order 152 of 5.

  As shown in the operation schedule 140, the carbonization time of the normal kiln is 5 times of the kiln processing time of 1 order 141, 4 order 144, 2 order 142, 5 order 145 and 3 order 143. Equivalent to. On the other hand, the carbonization time of the flying kiln is equivalent to the firing time in six orders, which is one order 141, 4 order 144, 2 order 142, 5 order 145 and 3 order 143 plus another order. To do. Since the carbonization time of a normal kiln is equivalent to the firing time of five sequential kilns, and the carbonization time of a flying kiln is equivalent to the firing time of six sequential kilns, the carbonization time of the flying kiln is the carbonization time of the normal kiln. (6/5) times.

(Outline of carbonization time calculation method for normal kiln according to the embodiment)
The carbonization time calculation method of the normal kiln according to the embodiment calculates the carbonization time information related to the carbonization time of the normal kiln using the carbonization time calculation formula indicating the relationship between the number of flying kilns and the carbonization time of the normal kiln. To do. In one example, the carbonization time information is information indicating the operation rate of the normal kiln per unit time, and specifically, the operation rate of the normal kiln per day, which is also referred to as 24 / GCT. Here, GCT is an abbreviation for carbonization time. Hereinafter, the carbonization time may be referred to as GCT. The carbonization time calculation method of the normal kiln according to the embodiment calculates the carbonization time information using the carbonization time calculation formula indicating the relationship between the number of flying kilns and the carbonization time of the normal kiln, Can be optimized according to the number of kilns.

  Conventionally, the carbonization time of a normal kiln (hereinafter also referred to as GCT (normal)) has been set as a constant value regardless of the number of flying kilns based on the experience of the operator when determining the operation schedule. In a coke oven, the shorter the carbonization time of the normal kiln, the higher the operation rate and the higher the productivity. Therefore, the operator may set the carbonization time of the normal kiln shorter when determining the operation schedule. On the other hand, the actual carbonization time, which is the actual carbonization time of ordinary kilns, is long due to the fact that there are many flying kilns and that the coke oven is operated while ensuring operation interruption for maintaining the furnace body and equipment. Tend to be. If the set carbonization time of the normal kiln set by the operator deviates from the actual carbonization time which is the actual carbonization time of the normal kiln, various problems may occur. For example, the deviation between the set carbonization time and the actual carbonization time of a normal kiln causes a difference between the production plan and the production result. Moreover, when the performance carbonization time of a normal kiln becomes longer than the setting carbonization time of a normal kiln, it will supply an excess calorie | heat amount to a normal kiln and the energy efficiency of a coke oven will fall.

  The inventors of the present invention use the carbonization time arithmetic expression indicating the relationship between the number of flying kilns and the carbonization time of the normal kiln, the carbonization time of the normal kiln, 24 / GCT (normal kiln) and the kiln output per day. We found that the number can be set. The inventors of the present invention calculated the operation possible time obtained by subtracting the operation interruption time from 1440 minutes, which is the total time of the day, and the kiln pitch and setup time required for the kiln treatment of all the kilns of the coke oven furnace group. Formula (1) was formulated assuming that the combined kiln round-trip times are equal. Here, the operation interruption time is a time during which the coke oven is not operated for reasons such as kiln repair work and worker rest.

  In the formula (1), the left side is the operation time obtained by subtracting the operation interruption time from the time of 1440 minutes, and the right side is the kiln pitch and stage required for the kiln processing of all the kilns of the coke oven. It is the time for one round from the kiln to add up the time taken. The kiln pitch indicates the execution time in each kiln of the kiln removal process including the coke extrusion process from the kiln 110 by the extruder 105 and the coal charging process by the charging vehicle 104 to the kiln. The setup time indicates the time for preparation for the kiln processing including the time for supplying water to the fire train 107 and the like, the time for moving the extruder 105 to a predetermined position, and the like. The kiln turn-out time indicates the time required to execute the kiln removal process for all kilns that can perform the kiln removal process.

  The right side of the formula (1) shows the entire kiln round-trip time, which is the sum of the kiln pitch and setup time required to kiln all the kilns (normal kilns and flying kilns). The first stage of the equation (1) indicates the total setup time, and includes the water supply time to the fire extinguishing train 107, the movement time of the extruder 105 to a predetermined position, and the like. Since the moving time of the extruder 105 to the predetermined position is different between the A furnace group 101 and the B furnace group 102, the setup time is different between the A furnace group 101 and the B furnace group. In the formula (1), the setup time of the A furnace group 101 is indicated by the setup time (A furnace), and the setup time of the B furnace group 102 is indicated by the setup time (B furnace). In addition, since the setup time is the time required before each order from 1 to 5, the setup time (A furnace) and the setup time ( The value obtained by multiplying the time obtained by adding (B furnace) by 24 / GCT (normal kiln) is further multiplied by five.

  The second stage of the formula (1) is the total time required for the kiln exit processing of a normal kiln. The total amount of time required for the kiln removal processing of a normal kiln is obtained by multiplying 24 / GCT (normal kiln), the kiln pitch of the normal kiln, and the number of installation gates. Here, the kiln pitch of a normal kiln is the time required for kiln removal processing per kiln of a normal kiln. In addition, as described with reference to FIG. 1, when the charging vehicle 104 extrudes coke with one arm portion, the other arm portion is charged with coal and is flattened. In the second stage, the number of installation gates is multiplied regardless of the number of flying kilns.

  The third stage of the formula (1) is the total time required for the kiln exit processing of the flying kiln. The total amount of time required for the firing process of the flying kiln is obtained by multiplying 24 / GCT (flying kiln), the firing pitch of the flying kiln, and the number of flying kilns. Here, 24 / GCT (Fly kiln) is the operating rate of the flying kiln per day, and the kiln pitch of the hiki kiln is the time required for the kiln removal processing per kiln.

Further, as described with reference to FIG. 6C, the carbonization time of the flying kiln is (6/5) times the carbonization time of the normal kiln, so 24 / GCT (normal kiln) and 24 / GCT The relationship with Tobi kiln is

  It becomes. Substituting equation (2) into 24 / GCT (flying kiln) in equation (1), 24 / GCT (normal kiln) is a function of the operation interruption time and the number of flying kilns as shown in equation (3). .

  Furthermore, the number of kilns per day of the coke oven is expressed by the formula (4).

  In equation (4), the number of kilns is usually

  Indicated by Here, the number of non-operating kilns indicates the number of non-operating kilns that do not temporarily come out, such as a pressing kiln and a repair kiln.

  The inventors of the present invention calculate 24 / GCT (ordinary kiln) indicating the daily operation rate of the normal kiln using the formula (3), and use the formula (4) to calculate the coke oven per day. It was found that the number of kilns of the kiln was calculated. That is, the inventors of the present invention have found that 24 / GCT (ordinary kiln) is calculated as a function of the operable time and the number of flying kilns when the operable time coincides with the rounding time of the kiln. By using Equation (3), 24 / GCT (ordinary kiln) is calculated so that the operable time and the one-round time of the kiln match, so the carbonization time of the normal kiln depends on the amount of heat input. The amount of heat is given to the coke and there is no risk of overheating the coke. 24 / GCT (ordinary kiln) calculated using the equation (3) is an operation rate corresponding to the time for giving the heat to the coke according to the amount of heat input, so by using the equation (3), 24 / GCT (normal kiln) optimized according to the amount of heat input can be calculated.

  FIG. 8 is a diagram showing a correlation between the number of flying kilns calculated using Equation (4) and the number of kilns per day of the coke oven. In FIG. 8, the horizontal axis indicates the number of flying kilns per day, and the vertical strike axis indicates the number of kilns in the coke oven as a whole. In FIG. 8, the number of coke ovens is 90, the number of non-operational kilns is 6, the operation interruption time is 1 hour, and the operation possible time is 24 hours. Curve 800 shows the correlation between the number of flying kilns calculated using equation (4) and the number of kilns. Each of the straight lines 801 to 804 indicates the number of kilns when the GCT (normal kiln) indicating the GCT of the normal kiln is set to a constant value without using the equations (3) and (4). Straight line 801 indicates when GCG (normal kiln) is 21 hours, straight line 802 indicates when GCG (normal kiln) is 22 hours, and straight line 803 indicates when GCG (normal kiln) is 23 hours. A straight line 804 indicates when the GCG (normal kiln) is 24 hours. Moreover, the area | region above the curve 800 shows the operation delay area | region 810 by a flying kiln increase. The operation delay region 810 due to the increase in the flying kiln is a region where the actual carbonization time has increased due to the increase in the flying kiln, and if the set carbonization time is located in the operation delay region 810 due to the increase in the flying kiln, the amount of heat more than necessary for the kiln discharge treatment. As a result, the coke is overheated.

  For example, as indicated by the arrow A, when the number of flying kilns is 15, and the number of kilns is set to 76 kilns, the set carbonization time increases when the GCT (normal kiln) is a constant value. The coke is overheated without being recognized as being located in the operation delay region 810. That is, when the set carbonization time is set to 21 hours when the number of flying kilns is 15 kilns, the set carbonization time is 21 hours, whereas the actual carbonization time is 23 hours, and the coke is over 2 hours. As a result, the number of actual kilns is 69. When GCT (normal kiln) is a constant value, a divergence occurs between the set carbonization time and the actual carbonization time, thereby causing a divergence between the planned production amount and the actual production amount.

  On the other hand, using equations (3) and (4), as shown by arrow B, GCG (normal kiln) is calculated as 23 hours, and the number of kilns is calculated as 69 kilns. Determining the set carbonization time to 23 hours using the equations (3) and (4) does not mean a reduction in the production of coke, but a kiln capable of taking out a coke oven according to the number of flying kilns. The number of actual kilns is 69, which is the same as the number of kilns set. The production amount is maximized by changing the set carbonization time to the carbonization time calculated using the equations (3) and (4) according to the increase or decrease of the number of flying kilns. For example, when using the formulas (3) and (4), when the number of flying kilns is 9 or 10 kilns, GCG (normal kiln) becomes 23 hours.

(Configuration and Function of Carbonization Time Calculation Device According to First Embodiment)
FIG. 9 is a configuration block diagram of the carbonization time arithmetic device according to the first embodiment.

  The carbonization time calculation device 1 includes a communication unit 11, a storage unit 12, an input unit 13, an output unit 14, and a processing unit 20. The carbonization time calculation device 1 uses the correlation between the operation time that indicates the time during which the coke oven can operate per unit time and the number of flying kilns and the carbonization time of the normal kiln. The carbonization time information related to is calculated. Specifically, the carbonization time calculation device 1 is a carbonization time calculation formula indicating the correlation between the operation time that indicates the time during which the coke oven can be operated per day, and the number of flying kilns and the carbonization time of the normal kiln. Is used to calculate 24 / GCT (normal kiln). In one example, the carbonization time calculation device 1 is an electronic computer such as a personal computer.

  The communication unit 11 includes a wired communication interface circuit such as Ethernet (registered trademark). The communication unit 11 communicates with a host controller (not shown) and the like via a LAN.

  The storage unit 12 includes, for example, at least one of a magnetic tape device, a magnetic disk device, or an optical disk device. The storage unit 12 stores an operating system program, a driver program, an application program, data, and the like used for processing in the processing unit 20. For example, the storage unit 12 sets 24 / GCT (ordinary kiln) as an application program using an operation time per day and a carbonization time arithmetic expression indicating the correlation between the number of flying kilns and the carbonization time of the ordinary kiln. A carbonization time calculation program for calculation is stored. The carbonization time calculation program may be installed in the storage unit 12 using a known setup program or the like from a computer-readable portable recording medium such as a CD-ROM or DVD-ROM.

  Moreover, the memory | storage part 12 memorize | stores the various data used by carbonization time arithmetic processing. Furthermore, the storage unit 12 may temporarily store temporary data related to a predetermined process.

  The input unit 13 may be any device that can input data, such as a touch panel and a key button. The operator can input characters, numbers, symbols, and the like using the input unit 13. When operated by the operator, the input unit 13 generates a signal corresponding to the operation. Then, the generated signal is supplied to the processing unit 20 as an instruction from the operator.

  The output unit 14 may be any device as long as it can display video, images, and the like, and is, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display. The output unit 14 displays a video corresponding to the video data supplied from the processing unit 20, an image corresponding to the image data, and the like. The output unit 14 may be an output device that prints video, images, characters, or the like on a display medium such as paper.

  The processing unit 20 includes one or a plurality of processors and their peripheral circuits. The processing unit 20 comprehensively controls the overall operation of the carbonization time arithmetic device 1, and is, for example, a CPU. The processing unit 20 executes processing based on programs (driver program, operating system program, application program, etc.) stored in the storage unit 12. The processing unit 20 can execute a plurality of programs (such as application programs) in parallel.

  The processing unit 20 includes an operation parameter acquisition unit 21, a flying kiln number acquisition unit 22, a carbonization time information calculation unit 23, and a carbonization time information output unit 24. Each of these units is a functional module realized by a program executed by a processor included in the processing unit 20. Or these each parts may be mounted in the carbonization time arithmetic unit 1 as firmware.

  FIG. 10 is a flowchart of carbonization time calculation processing by the carbonization time calculation device 1. The carbonization time calculation process is executed mainly by the processing unit 20 in cooperation with each element of the carbonization time calculation device 1 based on a program stored in the storage unit 12 in advance.

  First, the operation parameter acquisition part 21 acquires the operation parameter used when calculating 24 / GCT (normal kiln) (S101). The operation parameters include operation interruption time, setup time (A furnace), setup time (B furnace), kiln pitch (normal kiln), and number of installation gates included in equation (3). In one example, the operation interruption time is acquired via the input unit 13 according to the input work of the worker. In addition, the setup time (A furnace), setup time (B furnace), kiln pitch (normal kiln) and the number of installation gates are stored in the storage unit 12, and the operation parameter acquisition unit 21 receives the setup from the storage unit 12. Time (A furnace), setup time (B furnace), kiln exit pitch (normal kiln) and number of installation gates are acquired. Next, the flying kiln acquisition unit 22 acquires the number of flying kilns (S102). In one example, the number of flying kilns is acquired via the input unit 13 according to the operator's input work.

  Next, the carbonization time information calculation unit 23 uses the operation parameters such as the operable time acquired in S101 and the number of flying kilns acquired in the process of S102, and the equation (3), 24 / GCT (normally The kiln is calculated (S103). Formula (3) is a carbonization time arithmetic expression showing a correlation with the carbonization time of a normal kiln. And carbonization time information output part 24 outputs 24 / GCT (normal kiln) computed by processing of S103 (S104). In one example, the output 24 / GCT (normal kiln) is used for an operation schedule determination process for determining the operation schedule of the coke oven and an input heat amount determination process for determining the amount of heat input to the normal kiln.

(Configuration and Function of Carbonization Time Calculation Device According to Second Embodiment)
FIG. 11 is a configuration block diagram of the carbonization time arithmetic device according to the second embodiment.

  The carbonization time calculation device 2 is different from the carbonization time calculation device 1 in that it has a processing unit 30 instead of the processing unit 20. The processing unit 30 includes an operation parameter acquisition unit 31, a flying kiln number acquisition unit 32, a carbonization time information calculation unit 33, a carbonization time information output unit 34, a kiln output number calculation unit 35, and a kiln output number output unit 36. Have Each of these units is a functional module realized by a program executed by a processor included in the processing unit 30. Or these each parts may be mounted in the carbonization time arithmetic unit 2 as firmware.

  FIG. 12 is a flowchart of carbonization time calculation processing by the carbonization time calculation device 2. The carbonization time calculation process is executed mainly by the processing unit 20 in cooperation with each element of the carbonization time calculation device 1 based on a program stored in the storage unit 12 in advance.

  Since the process of S201-S204 is the same as the process of S101-S104, detailed description is abbreviate | omitted here. The number-of-kilns calculating unit 35 calculates 24 / GCT (ordinary kiln) calculated in the process of S203 and the number of flying kilns acquired even in the process of S202, using the formula (4) per day of the coke oven. The number of kilns is calculated (S205). And the kiln output number output part 36 outputs the kiln output number calculated by the process of S204 (S206).

(Operational effects of the carbonization time arithmetic device according to the embodiment)
The carbonization time calculation device 1 can calculate 24 / GCT (normal kiln) optimized according to the amount of heat input by calculating 24 / GCT (normal kiln) using Equation (3). By determining the operation schedule plan using 24 / GCT (ordinary kiln) calculated by the carbonization time calculation device 1, there is a difference between the operation schedule plan and the actual operation schedule of the coke oven. Can be prevented. Moreover, it is possible to prevent the coke from being overheated by determining the amount of heat input to the normal kiln using 24 / GCT (normal kiln) calculated by the carbonization time calculation device 1.

  Moreover, the carbonization time calculating device 2 can calculate the number of kilns optimized according to the amount of heat input by calculating the number of kilns using Equations (3) and (4). By determining the planned production amount using the number of kilns calculated by the carbonization time calculation device 2, it is possible to prevent a divergence between the planned production amount and the actual production amount.

(Modification of the carbonization time calculation device according to the embodiment)
Carbonization time calculation devices 1 and 2 calculate 24 / GCT (normal kiln) using equation (3), but the carbonization time calculation device according to the embodiment is carbonization of a normal kiln such as GCT (normal kiln). Other carbonization time information related to time may be calculated.

  Carbonization time calculation devices 1 and 2 calculate 24 / GCT (ordinary kiln) indicating an operation rate per day using Equation (3). However, the carbonization time calculation device according to the embodiment is per week. Other carbonization time information per unit time such as carbonization time information may be calculated.

  Carbonization time calculation devices 1 and 2 calculate 24 / GCT (normal kiln) using equations (3) and (4). However, the carbonization time calculation apparatus according to the embodiment stores a table corresponding to the expressions (3) and (4) in the storage unit, and uses the table stored in the storage unit to perform 24 / GCT (normal kiln) ) May be calculated.

1, 2 Carbonization time calculation device 21, 31 Operation parameter acquisition unit 22, 32 Flying kiln number acquisition unit 23, 33 Carbonization time information calculation unit 24, 34 Carbonization time information output unit 35 Kiln output number calculation unit 36 Kiln output number output unit 100 coke oven 110 kiln

Claims (8)

In a coke oven in which a plurality of kilns that produce coke by dry distillation of charged coal are arranged adjacent to each other, it is usually possible to continuously perform kiln discharge processing including coal charging processing and coke extrusion processing. A method for calculating a carbonization time for carbonizing coal charged in a kiln,
Acquire operation parameters including the operation time indicating the time per unit time that the coke oven can operate,
Obtaining the number of flying kilns whose carbonization time is longer than the carbonization time of the normal kiln;
Using the correlation between the operable time and the number of flying kilns, and the carbonizing time of the normal kiln, calculating the carbonizing time information related to the carbonizing time of the normal kiln,
Outputting the calculated carbonization time information;
The carbonization time calculation method characterized by including. Calculate the number of kilns per unit time of the coke oven from the calculated carbonization time information and the number of flying kilns,
The carbonization time calculation method according to claim 1, further comprising outputting the calculated number of kilns.   The carbonization time calculation method according to claim 1 or 2, wherein the carbonization time information is information indicating an operation rate of the normal kiln per unit time.   The correlation includes a carbonization time arithmetic expression obtained by dividing the operable time by a kiln round-trip time indicating a time required to perform the kiln removal processing of all kilns capable of executing the kiln removal process. The carbonization time calculation method according to any one of claims 1 to 3.   The carbonization time calculation method according to any one of claims 1 to 4, wherein the operable time is a time obtained by subtracting an operation interruption time indicating a time during which the coke oven is not operated from the unit time.   The rounding time of the kiln is the total time of the setup time indicating the time for preparation of the kiln processing and the sum of the execution times of the kilns for each kiln capable of performing the kiln processing. The carbonization time calculation method according to claim 4 or 5, wherein In a coke oven in which a plurality of kilns that produce coke by dry distillation of charged coal are arranged adjacent to each other, it is usually possible to continuously perform kiln discharge processing including coal charging processing and coke extrusion processing. A carbonization time calculation for calculating a carbonization time for carbonizing coal charged in a kiln,
An operation parameter acquisition unit for acquiring an operation parameter including an operation time indicating a time per unit time in which the coke oven can be operated;
A flying kiln number acquisition unit for acquiring the number of flying kilns that is longer than the carbonizing time of the normal kiln;
Carbonization time information calculating unit for calculating carbonization time information related to the carbonization time of the normal kiln, using the correlation between the operable time and the number of flying kilns, and the carbonization time of the normal kiln,
A carbonization time information output unit for outputting the calculated carbonization time information;
A carbonization time calculation device comprising: In a coke oven in which a plurality of kilns that produce coke by dry distillation of charged coal are arranged adjacent to each other, it is usually possible to continuously perform kiln discharge processing including coal charging processing and coke extrusion processing. A process for calculating the carbonization time for carbonizing coal charged in the kiln,
Acquire operation parameters including the operation time indicating the time per unit time that the coke oven can operate,
Obtaining the number of flying kilns whose carbonization time is longer than the carbonization time of the normal kiln;
Using the correlation between the operable time and the number of flying kilns, and the carbonizing time of the normal kiln, calculating the carbonizing time information related to the carbonizing time of the normal kiln,
Outputting the calculated carbonization time information;
A carbonization time calculation program that causes a computer to execute processing.

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