JP2023180730A - Waste disposal plan calculation apparatus and waste disposal plan calculation method - Google Patents

Abstract

To provide a waste disposal plan calculation apparatus and a waste disposal plan calculation method, configured to increase an operating rate of a waste disposal facility.SOLUTION: A waste disposal plan calculation apparatus includes a data acquisition unit, and a computing unit. The computing unit is configured to: calculate a range of acceptable amount of waste for each facility, from a start/stop plan, a processing load operation range, and an accumulated amount operation range of each facility; determine whether an estimated value of a total amount accepted falls within a total acceptable range, the estimated value of the total amount accepted being obtained by summing up estimated values of an acceptable amount of waste in multiple facilities, and the total acceptable range being obtained by summing up the ranges of an acceptable amount of waste in the multiple facilities; distribute, when the estimated value of the total amount accepted falls within the total acceptable amount range, the estimated value of the total amount accepted to the multiple facilities, on the basis of a standard determined in advance, to determine a shared processing plan for each facility; and execute, when the estimated value of the total amount accepted does not fall within the total acceptable amount range, re-examination processing for re-examining the start/stop plan in at least one of the multiple facilities.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a waste treatment plan calculation device and a waste treatment plan calculation method.

In waste processing facilities that perform incineration or other processing on waste, waste collected from various places is brought in every day, stored in temporary storage pits, and then sequentially processed in processing equipment. Waste treatment facilities use the thermal energy generated during treatment to generate electricity, which is used as a power source for the waste treatment facility, supplied to surrounding areas, or sold.

However, conventionally, waste treatment facilities have been operated individually, resulting in the following problems. For example, there is a need for periodic inspections and repair work in facilities, and it is necessary to stop processing equipment during the periodic inspection period. For this reason, waste treatment facilities have a startup/shutdown plan for each treatment device that specifies the startup period for processing and the shutdown period for stopping processing. It is operated based on. In this way, in waste treatment facilities, it is necessary to stop the treatment equipment, so it is necessary to increase the capacity of the storage pit to some extent. Furthermore, one facility often has a plurality of processing devices in preparation for periodic inspections and failures of the processing devices, and as a result, it is not possible to increase the operating rate of each processing device during normal times. This leads to deterioration of thermal energy recovery efficiency.

Japanese Patent Application Publication No. 2021-128765 Patent No. 6993748

Patent Document 1 discloses a configuration in which a plurality of waste treatment facilities are connected through a communication network and can be operated remotely. Patent Document 1 discloses that a plurality of waste treatment facilities are divided into groups based on the type of furnace, etc., and one operator operates the plurality of waste treatment facilities belonging to the same group. Stable operation of the facility is disclosed. However, there is no mention of increasing the operating rate of furnaces in waste treatment facilities, so there is room for improvement.

Further, Patent Document 2 discloses a system for trading waste processing capacity at a plurality of waste processing facilities. However, in the system of Patent Document 2, emphasis is placed on transactions between waste generators and waste treatment facilities, and the system does not take into account startup/shutdown plans for waste treatment facilities.

Therefore, an object of the present disclosure is to provide a waste treatment plan calculation device and a waste treatment plan calculation method that can increase the operating rate of a waste treatment facility.

A waste treatment plan calculation device according to an aspect of the present disclosure is a waste treatment plan calculation device that calculates a shared treatment plan for sharing the amount of waste to be processed among a plurality of facilities that process waste. , a data acquisition device, and a computing device, each of the plurality of facilities includes a storage pit for temporarily storing waste transported to the facility, and a processing device for processing the waste, The data acquisition device determines an estimated amount of waste brought in for each facility in a first unit period, a startup period for processing waste in the first unit period for each processing device, and a stop period for processing the waste. Obtain a startup/shutdown plan that defines a shutdown period, a processing load operation range that defines the range of processing amount in the processing device for each facility, and a storage amount operation range that defines the range of storage amount in the storage pit for each facility, and perform the calculation. The device calculates the range of the amount of waste that can be brought in for each facility from the startup/shutdown plan, the processing load operation range, and the storage amount operation range for each facility, and totals the estimated value of the amount of waste that can be brought in for the plurality of facilities. It is determined whether the estimated total amount brought in is within the range of the total amount that can be brought in, which is the sum of the range of the amount of waste that can be brought in at the plurality of facilities, and the estimated value of the total amount brought in is included in the range of the amount that can be brought in. If it is within the range, the estimated total amount brought in is distributed to the plurality of facilities based on predetermined criteria to determine a shared processing plan for each facility, and the estimated total amount brought in is If the amount is not within the total transportable amount range, a reconsideration process is performed to review the startup/shutdown plan for at least one of the plurality of facilities.

A waste treatment plan calculation method according to another aspect of the present disclosure is a waste treatment plan calculation method for calculating a shared treatment plan for sharing the amount of waste to be treated among a plurality of facilities that process waste. Each of the plurality of facilities includes a storage pit that temporarily stores the waste transported to the facility, and a processing device that processes the waste, and the method includes An estimated value of the amount of waste brought in, a startup/shutdown plan that defines a startup period during which waste is processed and a shutdown period during which the waste processing is stopped within the first unit period for each of the processing equipment, and the above for each facility. A processing load operation range that defines the range of processing amount in the processing device and a storage amount operation range that defines the range of storage amount in the storage pit for each facility are obtained, and the start/stop plan, the processing load operation range, and the storage amount operation range for each facility are acquired. The range of the amount of waste that can be carried in for each facility is calculated from the storage amount operation range, and the estimated total amount of waste that can be carried in at the plurality of facilities is calculated by summing the estimated amount of waste that can be carried in at the plurality of facilities. It is determined whether or not the estimated total amount is within the total allowable amount range, and if the estimated total amount is within the total allowable amount range, the total amount is determined based on a predetermined standard. The estimated value of the amount carried in is distributed to the plurality of facilities to determine a shared processing plan for each facility, and if the estimated value of the total amount carried in is not within the range of the total allowable amount carried in, the estimated value of the amount carried in is divided among the plurality of facilities. A reconsideration process is performed to review the startup/shutdown plan for at least one of the facilities.

According to the present disclosure, it is possible to provide a waste treatment plan calculation device and a waste treatment plan calculation method that can increase the operating rate of a waste treatment facility.

1 is a schematic configuration diagram showing a waste treatment facility that is a target of a waste treatment plan calculation device according to an embodiment of the present disclosure. FIG. 2 is a block diagram showing a schematic configuration of a waste treatment plan calculation device according to an embodiment of the present disclosure. FIG. 3 is a flowchart showing the flow of calculations for determining the shared processing plan in this embodiment. FIG. 4 is a graph showing an example of the estimated total carry-in amount and the range of the total carry-in amount in this embodiment. FIG. 5 is a graph showing an example of changing the startup/shutdown plan. FIG. 6 is a graph showing the results of reconsidering the range of total transportable amount shown in FIG. FIG. 7 is an image diagram showing an example of modifying the sharing processing plan when an unplanned stoppage occurs in this embodiment. FIG. 8 is a flowchart showing the flow of calculations for determining a shared processing plan when an unplanned stoppage occurs in this embodiment.

A waste treatment plan calculation device according to an embodiment of the present disclosure will be described below. First, an example of a waste treatment facility, which is a prerequisite, will be explained.

[Overview of waste treatment facility]
FIG. 1 is a schematic configuration diagram showing a waste treatment facility that is a target of a waste treatment plan calculation device according to an embodiment of the present disclosure. In this embodiment, the waste treatment facility 1 is configured as an incineration plant including an incinerator 2 as a treatment device. The waste treatment facility 1 includes an incinerator 2 having a furnace chamber 3 for incinerating waste using oxygen-containing gas, and a steam recovery facility for recovering exhaust heat as water vapor from the incinerator exhaust gas discharged from the incinerator 2. It includes a boiler 4 which is a device. A hopper 5 and a dust feeder 6 are arranged on the opposite side of the incinerator 2 from the boiler 4, and an exhaust gas exhaust path 7 extends from the boiler 4 to a chimney 8. In the exhaust route 7, an economizer, a cooling tower, a dust collector, and a blower are arranged in order from the upstream side.

The waste treatment facility 1 includes a storage pit 9 on the opposite side of the hopper 5 from the furnace chamber 3 for temporarily storing waste to be input into the incinerator 2. A crane 10 is provided above the storage pit 9. The waste stored in the storage pit 9 is loaded into the hopper 5 by a crane 10. The dust feeder 6 feeds the waste put into the hopper 5 into the furnace chamber 3 of the incinerator 2 by operating intermittently at predetermined intervals or continuously at a predetermined speed.

The incinerator 2 has a stoker provided below the furnace chamber 3. The stoker functions as a means of transporting waste. The stoker includes a dry stoker 11, a combustion stoker 12, and an after-combustion stoker 13 in order from the side closest to the dust feeder 6. That is, these stokers 11, 12, 13 are arranged in the direction of waste movement. Wind boxes 14, 15, 16 are arranged below the drying, combustion and post-combustion stokers 11, 12, 13, respectively. Furthermore, the incinerator 2 has a reburning chamber 17 between the furnace chamber 3 and the boiler 4, which is continuous with the furnace chamber 3. In addition, although the combustion stoker 12 is one stage in the illustrated example, it may be provided in two or more stages. The drying stoker 11, the combustion stoker 12, and the after-combustion stoker 13 operate intermittently, for example, at different intervals.

In the furnace chamber 3, combustion gas is generated by thermal decomposition and partial oxidation reaction of waste, and this combustion gas is combusted together with the waste. The re-combustion chamber 17 is for completely combusting the combustion gas flowing out from the furnace chamber 3. Ash after combustion of the waste is discharged from an outlet 18 provided adjacent to the post-combustion stoker 13.

In the boiler 4, steam is generated by exhaust heat obtained from exhaust gas discharged from the incinerator 2. More specifically, as shown in FIG. 1, the boiler 4 includes a radiation chamber 19 arranged above the reburning chamber 17, a first flue 20 whose upper part communicates with the radiation chamber 19, and a first flue. 20 and a second flue 21 whose lower parts communicate with each other. Steam generated from exhaust heat in the boiler 4 is sent to a turbine 22 connected to a generator 23 and used for power generation. The electric power generated by the generator 23 is used in the waste treatment facility 1. In addition, surplus power is supplied to surrounding areas or sold to an electric power company. Most of the exhaust gas that has passed through the boiler 4 flows through the exhaust path 7 and is then released into the atmosphere from the chimney 8.

Although the waste treatment facility 1 is illustrated as having one incinerator 2 in FIG. 1, the waste treatment facility 1 may include a plurality of incinerators 2, that is, a plurality of processing devices. It's okay.

Here, there are operational restrictions on the treatment of waste in the waste treatment facility 1. For example, the operational constraints in the waste treatment facility 1 include the upper limit of the continuous operation period of the incinerator 2, the lower limit of the continuous stop period of the incinerator 2 or the generator 23, the periodic inspection plan of the incinerator 2, the incinerator There are upper and lower limits of the processing amount per unit time in No. 2, upper and lower limits of the capacity of the storage pit 9, etc.

The continuous operation period of the incinerator 2 is predetermined for each incinerator 2 in order to maintain the capacity of the incinerator 2. The lower limit of the continuous shutdown period and periodic inspection plan for the incinerator 2 are determined for each incinerator 2 as constraints on the maintenance of the incinerator 2, such as shutdown for X days per year, etc. ing. The same applies to the period during which the generator 23 is stopped. The upper limit of the processing amount and the upper limit of the capacity of the storage pit 9 are determined in advance for each waste treatment facility 1 as values indicating the upper limit of the performance of the waste treatment facility 1. The lower limit value of the processing amount and the lower limit value of the capacity of the storage pit 9 are predetermined for each waste processing facility 1 as the minimum necessary values for the incinerator 2 to continuously perform the waste incineration operation. .

[Configuration of waste treatment plan calculation device]
FIG. 2 is a block diagram showing a schematic configuration of a waste treatment plan calculation device according to an embodiment of the present disclosure. The waste treatment plan calculation device 31 shown in FIG. 2 calculates a shared treatment plan for sharing the amount of waste to be treated among the plurality of facilities 1A, 1B, and 1C that process waste. The waste treatment plan calculation device 31 includes a data acquisition device 32, a storage device 33, a calculation device 34, and an output device 35. Each of the components 32, 33, 34, and 35 communicates data with each other via a bus 36. In the example of FIG. 2, the waste treatment plan calculation device 31 is connected to the control devices of the plurality of waste treatment facilities 1A, 1B, and 1C via a communication network 37 such as the Internet. In the example of FIG. 2, three waste treatment facilities are illustrated as the plurality of waste treatment facilities, namely, A facility 1A, B facility 1B, and C facility 1C. It is sufficient if it is 2 or more. In the following, a waste treatment facility may be simply abbreviated as a facility.

The data acquisition device 32 acquires various data described below. The data acquisition device 32 may be configured as an input device through which a user performs an input operation, or may be configured as a communication interface that receives various data transmitted from the control device of the waste treatment facility 1. The storage device 33 stores various data acquired by the data acquisition device 32. Further, the storage device 33 stores in advance a shared processing plan calculation program.

The computing unit 34 includes, for example, a computer such as a microcontroller or a personal computer. For example, the computing unit 34 includes a CPU, a main memory such as a RAM, and the like. The computing unit 34 computes a shared processing plan, which will be described later, based on various types of information stored in the storage unit 33. For this purpose, the computing unit 34 performs the functions of the range calculation section 41, the assigned processing plan determining section 42, the start/stop plan determining section 43, etc. by executing the assigned processing plan calculation program.

Note that the functions of elements disclosed in this specification may be implemented by general-purpose processors, special-purpose processors, integrated circuits, ASICs (Application Specific Integrated Circuits), conventional circuits configured or programmed to perform the disclosed functions, or any of the above. can be implemented using circuits or processing circuits that include combinations of. Processors are considered processing circuits or circuits because they include transistors and other circuits. As used herein, a circuit, unit or means is hardware that performs or is programmed to perform the recited functions. The hardware may be the hardware disclosed herein or other known hardware that is programmed or configured to perform the recited functions. If the hardware is a processor, which is considered a type of circuit, the circuit, unit, or means is a combination of hardware and software, and the software is used to configure the hardware or processor.

The output device 35 outputs the calculation result of the calculation device 34. For example, the output device 35 displays the shared treatment plan and startup/shutdown plan for each facility on a display device connected to the waste treatment plan calculation device 31. Further, the output device 35 may be configured as a communication interface that transmits data including the shared processing plan and the start/stop plan to the corresponding facilities 1A, 1B, and 1C.

[Determination of shared processing plan during normal times]
FIG. 3 is a flowchart showing the flow of calculations for determining the shared processing plan in this embodiment. The example in FIG. 3 shows the flow of calculations for determining the shared treatment plan for each facility 1A, 1B, 1C based on the predicted value of waste to be carried into each facility 1A, 1B, 1C.

First, the startup/shutdown plan determining unit 43 determines a startup/shutdown plan for each processing device, that is, each incinerator 2, for each first unit period from the operational constraint data in each of the facilities 1A, 1B, and 1C (step SA1). For this purpose, the data acquisition unit 32 stores, as operational constraint data, the upper limit value of the continuous operation period for each incinerator 2 in each facility 1A, 1B, and 1C, the lower limit value of the continuous stop period for each incinerator 2, and the incinerator Obtain a periodic inspection plan every 2. The data acquisition device 32 may acquire these data from each facility 1A, 1B, 1C each time the startup/shutdown plan is determined, or may store the acquired data in advance in the storage device 33. It may also be read from 33.

For example, the first unit period is set to one year. Further, the first unit period may be arbitrarily set each time the shared processing plan is calculated. Further, the upper limit value of the continuous operation period and the lower limit value of the continuous stop period are determined in advance as operational constraints in each facility 1A, 1B, and 1C. The continuous operation period and the continuous stop period are set, for example, in units of days. For example, the upper limit of the continuous operation period is set to 100 days, and the lower limit of the continuous stop period is set to 5 days. The periodic inspection plan includes a schedule for performing periodic inspections or repairs that involve stopping the incinerator 2.

The startup/shutdown plan determination unit 43 determines a startup/shutdown plan for each incinerator 2 by determining when and how long the incinerator 2 is to be operated or stopped in the first unit period from these operational constraint data. The startup/shutdown plan determining unit 43 determines a startup/shutdown plan for each incinerator 2 so that the operating rate of each incinerator 2 becomes the highest. The activation/shutdown plans for the plurality of facilities 1A, 1B, 1C can be determined independently of each other. That is, the outage periods of the incinerators 2 between the plurality of facilities 1A, 1B, and 1C may overlap with each other. However, instead of this, the startup and shutdown plans for the multiple facilities 1A, 1B, and 1C are determined so that the shutdown period of each incinerator 2 included in the multiple facilities 1A, 1B, and 1C does not overlap as much as possible. Good too. The determined start/stop plan for each incinerator 2 is stored in the storage device 33 in association with the facilities 1A, 1B, and 1C in which the incinerator 2 is included.

The range calculating unit 41 calculates the waste transportable amount range P for each facility from the startup/shutdown plan for each facility, the processing load operating range for each facility, and the storage amount operating range for each facility (step SA2). For this purpose, the data acquisition device 32 acquires the startup/shutdown plan for each facility, the processing load operating range for each facility, and the storage amount operating range for each facility. The data acquisition device 32 reads out the startup/shutdown plan for each incinerator 2 stored in the storage device 33 as the startup/shutdown plan for each facility. The data acquisition device 32 may acquire the processing load operating range for each facility and the storage amount operating range for each facility from each facility 1A, 1B, and 1C each time the waste transportable amount range P is calculated. Data obtained in advance may be stored in the storage device 33 and read from the storage device 33.

The processing load operation range is the lower limit of the minimum amount of waste supplied to the incinerator 2 per unit time in order to continue incinerating waste in the incinerator 2, and the waste that can be incinerated by the incinerator 2. It is determined by the upper limit of the amount of material supplied to the incinerator 2 per unit time. The storage amount operation range is determined by the lower limit of the amount of waste to be stored in the storage pit 9 in order to maintain the lower limit in the processing load operation range, and the upper limit of the amount of waste stored in the storage pit 9. Note that the supply amount and storage amount are determined, for example, by weight, volume, or a combination thereof. As described above, the startup/shutdown plan for each facility includes the startup/shutdown plan for the incinerator 2 included in the facility. For example, when one facility includes a plurality of incinerators 2, the range calculation unit 41 considers all the startup and shutdown plans for the plurality of incinerators 2 as the startup and shutdown plans for the facility.

The waste material importable amount range P is defined as a range between a lower limit value Pmin and an upper limit value Pmax. The range P of the amount of waste that can be transported is the minimum amount of waste that is necessary to realize the operation of the incinerator 2 according to the startup/shutdown plan and the waste that can be transported when the operating rate of the incinerator 2 is set to the highest. defined in the range between the maximum amount of material. The range calculation unit 41 calculates a total transportable amount range Pt that is the sum of the transportable volume ranges P in the plurality of facilities 1A, 1B, and 1C (step SA3). The total transportable amount range Pt is defined as a range between a lower limit value Ptmin and an upper limit value Ptmax.

Further, the range calculation unit 41 calculates the estimated total amount of waste carried in Ct, which is the sum of the estimated values of the amount of waste carried in at the plurality of facilities 1A, 1B, and 1C (step SA4). For this purpose, the data acquisition device 32 acquires the estimated amount of waste brought in for each facility in the first unit period. The estimated value of the amount of waste brought in is based on the past operating results of each facility 1A, 1B, and 1C, waste emission forecast information based on the business plan of the factory that generates waste, or population changes in the waste collection area, The amount of waste brought into a large facility such as a factory can be estimated from information on the surrounding environment, such as increases or decreases in the facility. The data acquisition unit 32 may acquire the estimated amount of waste brought in for each facility from each of the facilities 1A, 1B, and 1C, or acquire the operation history of the facility, waste discharge forecast information, or surrounding environment information, The estimated value of the amount of waste brought in for each facility may be calculated from the data acquired by the range calculation unit 41. The data acquisition device 32 may acquire the estimated amount of waste brought in for each facility from each facility 1A, 1B, and 1C each time it calculates the estimated total amount Ct, or the data acquired in advance can be stored in a memory. The information may be stored in the storage device 33 and read from the storage device 33.

The estimated value of the amount of waste brought in is configured as an integrated value of estimated values for each second unit period by dividing the first unit period into second unit periods shorter than the first unit period. For example, if the first unit period is one year and the second unit period is January, the estimated amount of waste brought in will be the sum of the estimated values for each month for 12 months. Furthermore, the estimated value for each second unit period may vary depending on the temperature, humidity, time, etc. at that time. Seasonal variations mean that the amount of waste generated can vary depending on, for example, vacation periods, busy seasons, and the like.

Similarly, the total carry-in amount estimated value Ct is also configured as an integrated value of estimated values for each second unit period by dividing the first unit period into second unit periods. FIG. 4 is a graph showing an example of the estimated total carry-in amount and the range of the total carry-in amount in this embodiment. On the horizontal axis, the start time of the first unit period is 0, and the time after the first unit period has elapsed from the start time is T1. The vertical axis indicates the integrated value of weight. Therefore, the graph of the total carry-in amount estimated value Ct is shown as a graph that changes horizontally or upwardly for each second unit period.

Therefore, in FIG. 4, the total allowable carry-in amount range Pt is such that the total allowable carry-in quantity range Pt in the first unit period is the sum of the total allowable carry-in quantity range per second unit period for the first unit period. It is shown as a graph. For example, if the first unit period is one year and the second unit period is January, the graph of the total allowable amount range Pt will be such that the total allowable amount range for each month is Pt/12. It is shown. In addition, in Figure 4, the total allowable waste amount range Pt is the sum of the allowable waste amount ranges P(1A), P(1B), and P(1C) at each facility 1A, 1B, and 1C. Shown schematically.

The range calculation unit 41 determines whether the estimated total carry-in amount Ct is included within the total carry-in amount range Pt (step SA5). More specifically, the range calculation unit 41 calculates that the total carry-in amount estimated value Ct is located between the upper limit value Ptmax and the lower limit value Ptmin in the total carry-in amount range Pt in the first unit period for each second unit period. Determine whether or not. In other words, in FIG. 4, it is determined whether the entire estimated value Ct of the total delivered amount in the first unit period from time 0 to T1 is included in a triangular region whose vertices are the origin 0, the upper limit value Ptmax, and the lower limit value Ptmin. It will be judged.

Here, as described above, the total allowable import amount range Pt is based on the startup/shutdown plan for each incinerator 2 determined so that the operating rate of the incinerator 2 included in each facility 1A, 1B, 1C is the highest. Determined by Therefore, in normal times, the range Pt of the total amount that can be brought in when the operating rate of the incinerator 2 is the highest is set as the range in which a sufficiently larger amount than the estimated total amount Ct can be brought in. . That is, as shown in FIG. 4, the total carry-in amount range Pt is located above the graph of the total carry-in amount estimated value Ct.

As a result, the range calculation unit 41 determines that the estimated total carry-in amount Ct is outside the total carry-in amount range Pt (No in step SA5). The calculator 34 is configured to review the startup/shutdown plan for at least one of the plurality of facilities 1A, 1B, and 1C when the estimated total carry-in amount Ct is not included within the total allowable carry-in amount range Pt. Perform reconsideration processing.

In the reconsideration process, the startup/shutdown plan determining unit 43 re-determines the startup/shutdown plan by lowering the operating rate of the incinerator 2 in the facility to be reconsidered (step SA6). FIG. 5 is a graph showing an example of changing the startup/shutdown plan. The upper graph in FIG. 5 shows the initial startup/shutdown plan Qini when the operating rate in the incinerator 2 is the highest, and the lower graph in FIG. The outage plan Qmod is shown.

As shown in FIG. 5, by shortening some of the startup periods and lengthening some of the shutdown periods in the initial startup/shutdown plan Qini when the incinerator 2 has the highest operating rate, The operating rate for one unit period decreases. The startup/shutdown plan determining unit 43 re-determines the startup/shutdown plan so as to reduce the operating rate of the incinerator 2 in the facility to be reexamined by a predetermined reduction range. The facilities to be reconsidered may be all or some of the facilities 1A, 1B, and 1C. The facilities to be reconsidered are determined in advance and stored in the storage device 33 as facility data to be reconsidered.

The range calculation unit 41 recalculates the total transportable amount range Pt using the re-determined modified startup/shutdown plan Qmod (step SA2 and step SA3). The range calculation unit 41 determines whether the estimated total carry-in amount Ct is included in the recalculated total carry-in possible amount range Pt (step SA4). The calculator 34 repeats the reexamination process until the total carry-in amount estimated value Ct is included in the total carry-in amount range Pt.

FIG. 6 is a graph showing the results of reconsidering the range of total transportable amount shown in FIG. The graph of FIG. 6 shows a state in which the estimated total carry-in amount Ct is included in the total carry-in amount range Pt.

When the estimated total delivered amount Ct is within the total possible delivered amount range Pt, the shared processing plan determination unit 42 sets the estimated total delivered amount Ct to multiple facilities 1A, 1B based on predetermined criteria. , 1C and determine a shared processing plan for each facility (step SA7). The storage device 33 stores in advance standards for determining shared processing plans in the plurality of facilities 1A, 1B, and 1C. For example, the standards include priorities, sharing ratios, sharing conditions, etc. between facilities. For example, the sharing ratio may be set based on the ratio of the maximum value of the waste transportable amount range P of the plurality of facilities 1A, 1B, 1C, or the ratio of the power generation efficiency of the plurality of facilities 1A, 1B, 1C. good. Also, for example, the sharing condition may be to maximize the amount of electricity sold by all of the facilities 1A, 1B, 1C in the first unit period, or to maximize the amount of electricity sold by all of the facilities 1A, 1B, 1C in the first unit period. may include minimizing carbon dioxide emissions. Furthermore, for example, the entire amount of the estimated total amount brought in Ct may be distributed in a predetermined sharing ratio, or the amount up to the first reference value of the estimated total amount brought in Ct may be allocated preferentially to facility A. , the portion exceeding the first reference value may be distributed among the plurality of facilities 1A, 1B, and 1C at a predetermined sharing ratio.

The output device 35 outputs the determined shared processing plan together with the corresponding start/stop plan. When the output device 35 is configured as a communication interface, the output device 35 transmits data including a shared processing plan and a start/stop plan corresponding to each facility 1A, 1B, 1C. The divided treatment plan determined in this manner becomes the planned value of the amount of waste to be brought in at each facility 1A, 1B, and 1C.

In each of the facilities 1A, 1B, and 1C, a waste treatment amount plan for the first unit period is determined based on each shared treatment plan, that is, the waste import amount plan value and the startup/shutdown plan. The waste treatment amount plan includes the amount of waste to be supplied to the incinerator 2 per unit time while the incinerator 2 is in operation.

[Modification of shared processing plan when unplanned outage occurs]
FIG. 7 is an image diagram showing an example of modifying the sharing processing plan when an unplanned stoppage occurs in this embodiment. In the example of FIG. 7, each facility 1A, 1B, and 1C was operating based on the normal shared processing plan and startup/shutdown plan shown in FIG. 3, but at time T2 on the way to time T1, facility A This example shows a case where an unplanned stoppage such as a failure occurs.

As shown in the upper graph of FIG. 7, when an unplanned stoppage occurs at the A facility 1A at time T2, the subsequent waste treatment cannot be performed at the A facility 1A. Therefore, if the waste continues to be transported to the A facility 1A according to the shared treatment plan, it will not be able to be processed at the A facility 1A, and the amount stored in the storage pit 9 of the A facility 1A will exceed the upper limit. For this reason, it becomes necessary to redistribute the waste that can no longer be processed at the A facility 1A to the other operable facilities 1B and 1C as much as possible.

Therefore, in the present embodiment, when an unplanned shutdown that does not follow the startup/shutdown plan occurs in at least one of the multiple facilities 1A, 1B, 1C, the multiple facilities 1A, 1B, 1C The startup/shutdown plan for the operable facilities 1B and 1C and the total transportable amount range Pt based on the plan are revised.

More specifically, the data acquisition device 32 acquires the requested amount D of waste to be accepted based on the waste acceptance request from the A facility 1A where the unplanned stoppage has occurred. The calculator 34 sets the requested acceptance amount D to be less than or equal to the upper limit value Rmax of the total acceptable amount based on the corrected total acceptable amount range Ptc, which is the sum of the corrected possible imported amount range Pc in the operable facilities 1B and 1C. , modify the startup/shutdown plan for at least one of the operable facilities 1B and 1C.

FIG. 8 is a flowchart showing the flow of calculations for determining a shared processing plan when an unplanned stoppage occurs in this embodiment. The waste treatment plan calculation device 31 performs the following calculation when receiving a notification that an unplanned shutdown has occurred from the A facility 1A where the unplanned shutdown has occurred. First, the startup/shutdown plan determining unit 43 starts each incinerator 2 so that the operating rate of the incinerator 2 is the highest based on the operational constraint data for at least one of the operable facilities 1B and 1C. The suspension plan is revised (step SB1).

The facilities whose startup/shutdown plan is to be revised may be all of the operable facilities 1B and 1C, or some of them. A facility whose startup/shutdown plan is to be modified or a rule for determining the facility is stored in advance in the storage device 33. The facility or the number of facilities whose startup/shutdown plan is revised depending on the facility where an unplanned shutdown has occurred or the amount of requests for acceptance D, etc. may change. Alternatively, when an unplanned shutdown occurs, the user may arbitrarily decide which facility to modify the startup/shutdown plan each time.

The startup/shutdown plan that maximizes the operating rate of the incinerator 2 is almost the same as the initial startup/shutdown plan for determining the shared processing plan during normal times. However, the input operational constraint data may include current operational data and the original startup/shutdown plan for the facility, that is, the normal startup/shutdown plan. More specifically, the operational constraint data is operational constraint data for determining the shared processing plan during normal times, that is, the upper limit value of the continuous operation period for each processing device, the lower limit value of the continuous stop period for each processing device, In addition to the periodic inspection plan for the processing equipment, it may include a startup/shutdown plan for each facility, a waste treatment amount plan, and the current remaining amount of the storage pit 9.

Each facility 1A, 1B, 1C is operated based on the normal startup/shutdown plan and waste treatment plan, but the amount of waste actually delivered to each facility 1A, 1B, 1C is based on the estimated value. It can go back and forth, and daily fluctuations can occur. Furthermore, the calorific value per unit amount of waste also changes depending on the season, time, etc. because the condition of the waste changes depending on humidity, temperature, etc. For example, the calorific value per unit amount of waste decreases in summer because the amount of water contained in the waste increases. Therefore, the waste treatment results at each of the facilities 1A, 1B, and 1C may cause errors with respect to the startup/shutdown plan and the waste treatment plan.

Therefore, when modifying the startup/shutdown plan when an unplanned shutdown occurs, current operational data is taken into consideration as operational constraint data, making it possible to correct errors in the processing results at each facility 1A, 1B, and 1C. can. Therefore, it is possible to modify the startup/shutdown plan more realistically.

The data acquisition device 32 may acquire current operational data from each facility when an unplanned outage occurs, or may acquire current operational data from each facility, for example, every day or every hour, regardless of whether an unplanned outage has occurred. etc., the latest operational data at that time may be periodically acquired from each facility 1A, 1B, 1C and stored in the storage device 33, or the contents stored in the storage device 33 may be updated. Since the data acquisition unit 32 periodically acquires the latest operational data, even if a facility suddenly experiences an unplanned outage, it is possible to revise the shared processing plan as long as the requested acceptance amount D is newly acquired. becomes.

The range calculation unit 41 corrects the range P of waste that can be carried in for each of the operable facilities 1B and 1C based on the revised startup/shutdown plan, the processing load operation range, and the storage amount operation range, and calculates the corrected waste load range P for each of the operable facilities 1B and 1C. A range Pc is determined (step SB2). The method of determining the corrected transportable amount range Pc is the same as the method of determining the waste material transportable amount range P in the calculation of the shared processing plan during normal times. The range calculating unit 41 calculates a corrected total allowable carry-in amount range Ptc, which is the sum of the corrected allowable carry-in capacity ranges Pc in the operable facilities 1B and 1C (step SB3). The corrected total transportable amount range Ptc is defined as the range between the lower limit value Ptcmin and the upper limit value Ptcmax.

The range calculation unit 41 calculates the upper limit value Rmax of the total acceptable amount from the upper limit value Ptcmax of the corrected total allowable amount range Ptc (step SB4). The upper limit value Rmax of the total allowable amount is the upper limit of the total allowable amount range (P(1B) + P(1C)) before modification in the operable facilities 1B and 1C from the upper limit Ptcmax of the corrected total allowable amount range Ptc. It is calculated as a value obtained by subtracting the value Ptmax (1B+1C).

The range calculation unit 41 determines whether the requested acceptance amount D is less than or equal to the upper limit value Rmax of the total acceptable amount (step SB5). If the requested acceptance amount D is less than or equal to the upper limit value Rmax of the total acceptable amount (Yes in step SB5), the activation/shutdown plan determining unit 43 determines the revised activation/shutdown plan. The shared processing plan determination unit 42 distributes the acceptance request amount D to the operable facilities 1B and 1C using the revised startup/shutdown plan, and corrects the shared processing plan for each of the operable facilities 1B and 1C ( Step SB6).

The revised shared treatment plan for the operable facilities 1B and 1C is the planned value of the amount of waste brought in based on the normal shared treatment plan after an unplanned outage occurs, plus the shared amount for the requested acceptance amount D. becomes. The distribution of the requested acceptance amount D is also performed based on predetermined criteria, as in the case of determining the shared processing plan during normal times. Different criteria may be applied to the distribution of the requested acceptance amount D and the distribution of the estimated total incoming amount Ct in normal times. For example, the sharing ratio may be set based on the ratio of the inter-facility distance between the A facility 1A where the unplanned stoppage has occurred and the operable facilities 1B and 1C. Furthermore, the sharing ratio may be set in consideration of the amount of carbon dioxide emitted during the transportation of waste.

If the requested amount D exceeds the upper limit Rmax of the total acceptable amount (No in step SB5), the operable facilities 1B and 1C cannot accept the entire requested amount D. Therefore, the distribution processing plan determining unit 42 modifies the distribution processing plan by assuming that the operable facilities 1B and 1C accept up to the upper limit Rmax of the total acceptable amount of the requested amount D (step SB7). At this time, the activation/shutdown plan determination unit 43 determines the revised activation/shutdown plan. The shared processing plan determining unit 42 distributes the upper limit value Rmax of the total acceptable amount to the operable facilities 1B and 1C using the revised startup/shutdown plan, and creates a shared processing plan for each of the operable facilities 1B and 1C. Correct.

Further, the output device 35 notifies the A facility 1A where the unplanned stoppage has occurred that the entire amount of the requested acceptance amount D cannot be accepted and the amount of waste that cannot be accepted (D-Rmax). For waste that cannot be accepted, either a temporary storage pit is installed in one of the multiple facilities 1A, 1B, or 1C for temporary storage, or a separate request is made to a facility outside the area to accept it and the waste is disposed of there. Ru.

According to the above configuration, the startup/shutdown plan for each of the plurality of facilities 1A, 1B, and 1C is determined from the total value Ct of the estimated amount of waste carried into the plurality of facilities 1A, 1B, and 1C. Therefore, flexible operation can be performed in the plurality of facilities 1A, 1B, and 1C without being bound by the periodic inspection period of one facility. That is, the operating rate of the incinerators 2 in the plurality of facilities 1A, 1B, and 1C can be increased relative to the total value Ct of the estimated amount of waste carried into the plurality of facilities 1A, 1B, and 1C. Thereby, the energy recovery efficiency in each of the facilities 1A, 1B, and 1C can be increased, and the amount of power generation can be maximized.

Furthermore, by coordinating among the plurality of facilities 1A, 1B, and 1C, the capacity of the storage pit 9 can be reduced, or there is no need to install a plurality of incinerators 2 in one facility. Therefore, when constructing a new waste treatment facility 1, the waste treatment facility 1 can be downsized, so the construction cost and maintenance cost per waste treatment facility 1 can be reduced.

In addition, even if it becomes difficult to operate according to the startup/shutdown plan due to an unplanned shutdown of a certain facility, it is possible to modify the waste sharing treatment plan among multiple facilities 1A, 1B, and 1C. It is possible to prevent the processing from stagnation. Therefore, in the plurality of facilities 1A, 1B, and 1C, it is possible to prevent waste from being carried in in excess of the upper limit of the storage amount in the storage pit 9.

[Other embodiments]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various improvements, changes, and modifications can be made without departing from the spirit thereof.

For example, in the above embodiment, the waste treatment facility 1 having a stoker-type incinerator 2 has been exemplified as the target of the waste treatment plan calculation, but the waste treatment facility having a processing device for treating waste has been exemplified. If so, it is not limited to this. For example, the waste treatment plan calculation method of the present disclosure can be applied to an incineration plant having a fluidized bed type incinerator, a crushing and sorting plant having a crusher for crushing waste, and the like. Further, the waste treatment facility 1 may include treatment equipment other than the incinerator 2. For example, the processing equipment may include a carbonizer, a landfill, or the like.

Further, in the above embodiment, the first unit period is one year and the second unit period is one month, but the invention is not limited to this, and each period can be set in various ways.

Further, in the above embodiment, the waste treatment plan calculation device 31 is configured as an independent device or facility connected to a plurality of facilities 1A, 1B, and 1C via the communication network 37, but It is not limited to this. For example, the waste treatment plan calculation device 31 may be installed in any of the waste treatment facilities among the plurality of facilities 1A, 1B, and 1C. Further, the waste treatment plan calculation device 31 may be installed in a management facility that manages a plurality of facilities 1A, 1B, and 1C, or may be installed separately from the management facility as an information processing device such as a cloud server. . Alternatively, there may be no management facility.

Further, in the above embodiment, the waste treatment plan calculation device 31 determines or modifies the startup/shutdown plan for each of the facilities 1A, 1B, and 1C, but the present invention is not limited to this. For example, the activation/shutdown plan for each facility 1A, 1B, 1C may be determined by the corresponding facility 1A, 1B, 1C, and the determined activation/shutdown plan may be transmitted to the waste treatment plan calculation device 31. Further, the activation/shutdown plan may be automatically determined by a predetermined determination program, or the user may create the activation/shutdown plan and input it into the waste treatment plan calculation device 31. In this way, the computing unit 34 of the waste treatment plan computing device 31 does not have to operate as the startup/shutdown plan determining unit 43.

Further, in the above embodiment, as an example of the startup/shutdown plan reconsideration process, the startup/shutdown plan determining unit 43 modifies the startup/shutdown plan, but the present invention is not limited to this. For example, the output device 35 may output a notification that the startup/shutdown plan needs to be modified. The notification may be output to be displayed on a display device connected to the waste treatment plan calculation device 31, or may be transmitted to each facility 1A, 1B, 1C. In this case, the facility or user who receives the notification modifies the startup/shutdown plan for the corresponding facility. After outputting the notification, the waste treatment plan calculation device 31 may wait for input of the corrected startup/shutdown plan.

In addition, in the above embodiment, when at least one of the plurality of facilities 1A, 1B, and 1C receives a request to accept waste from another facility due to an unplanned shutdown that does not follow the start-up/shutdown plan, the responsibility is shared. Although the modification of the treatment plan has been illustrated, the above embodiment can also be used in the event of a request for treatment of waste in an amount exceeding the allowable value determined based on the estimated total incoming amount Ct in the event of a large-scale disaster, etc. Similarly, the shared processing plan can be modified. However, in this case, the facilities that can be operated are all the facilities 1A, 1B, and 1C, which are the same as in normal times. The data acquisition unit 32 acquires the requested acceptance amount D based on the waste treatment request, and the computing unit 34 modifies the startup/shutdown plan and the shared processing plan in each facility 1A, 1B, 1C based on this. In this case, when distributing the requested amount D, in addition to or in place of the normal standards, for example, the sharing ratio is based on the waste generation location in each of the plurality of facilities 1A, 1B, and 1C. may be set based on the ratio of the distances. Furthermore, the sharing ratio may be set in consideration of the amount of carbon dioxide emitted during the transportation of waste.

Furthermore, in the embodiment described above, the operating rate of the incinerator 2 is the highest in at least one of the operable facilities 1B and 1C due to the modification of the shared processing plan due to an unplanned shutdown. Although the mode of modifying the startup/shutdown plan for each of the facilities 1B, 1C is illustrated as above, the modification mode of the startup/shutdown plan is not limited to this. For example, the startup/shutdown plan determination unit 43 may modify the startup/shutdown plan to increase the upper limit Pmax of the waste transportable amount range P based on the original startup/shutdown plan.

In this case, the range calculation unit 41 increases the upper limit Pmax of the normal waste transportable amount range P of the facility whose startup/shutdown plan is to be corrected by a predetermined amount to correct the waste transportable amount range P. You may. For example, in the example of Fig. 7, when modifying the startup/shutdown plan for facility B 1B, the slope of the straight line that defines the upper limit of the original waste transportable amount range P (1B) in the upper graph of Fig. 7 is increased. . The startup/shutdown plan determination unit 43 modifies the startup/shutdown plan of the corresponding facility based on the corrected carry-in capacity range Pc. Here, the upper limit of the corrected waste transportable amount range Pc is the upper limit of the waste transportable amount range based on the startup/shutdown plan when the incinerator 2 has the highest operating rate in the facility.

Furthermore, the range calculation unit 41 calculates a corrected total allowable amount range Ptc of the operable facilities 1B and 1C based on the corrected waste allowable amount range P, and based on this, the upper limit of the total acceptable amount. Calculate Rmax. If the requested acceptance amount D is larger than the calculated upper limit Rmax of the total acceptable amount, the range calculation unit 41 increases the upper limit Pmax of the waste importable amount range P in the facility to be corrected again by a predetermined amount. let The startup/shutdown plan determination unit 43 outputs the startup/shutdown plan at that time as a modified startup/shutdown plan when the requested amount D becomes equal to or less than the upper limit value Rmax of the total acceptable amount.

Note that when modifying the startup/shutdown plan to increase the upper limit Pmax of the range P of waste that can be carried in, the lower limit Pmin of the range P of waste that can be carried in may also be raised as the upper limit Pmax increases. Alternatively, the lower limit value Pmin may not be changed.

[Summary of this disclosure]
[Item 1]
A waste treatment plan calculation device according to an aspect of the present disclosure is a waste treatment plan calculation device that calculates a shared treatment plan for sharing the amount of waste to be processed among a plurality of facilities that process waste. , a data acquisition device, and a computing device, each of the plurality of facilities includes a storage pit for temporarily storing waste transported to the facility, and a processing device for processing the waste, The data acquisition device determines an estimated amount of waste brought in for each facility in a first unit period, a startup period for processing waste in the first unit period for each processing device, and a stop period for processing the waste. Obtain a startup/shutdown plan that defines a shutdown period, a processing load operation range that defines the range of processing amount in the processing device for each facility, and a storage amount operation range that defines the range of storage amount in the storage pit for each facility, and perform the calculation. The device calculates the range of the amount of waste that can be brought in for each facility from the startup/shutdown plan, the processing load operation range, and the storage amount operation range for each facility, and totals the estimated value of the amount of waste that can be brought in for the plurality of facilities. It is determined whether the estimated total amount brought in is within the range of the total amount that can be brought in, which is the sum of the range of the amount of waste that can be brought in at the plurality of facilities, and the estimated value of the total amount brought in is included in the range of the amount that can be brought in. If it is within the range, the estimated total amount brought in is distributed to the plurality of facilities based on predetermined criteria to determine a shared processing plan for each facility, and the estimated total amount brought in is If the amount is not within the total transportable amount range, a reconsideration process is performed to review the startup/shutdown plan for at least one of the plurality of facilities.

According to the above configuration, the startup/shutdown plan for each of the plurality of facilities is determined from the total value of the estimated amount of waste carried into the plurality of facilities. For this reason, flexible operation can be performed at a plurality of facilities without being bound by the periodic inspection period of one facility. That is, it is possible to increase the operating rate of the processing equipment in the plurality of facilities relative to the total value of the estimated amount of waste carried into the plurality of facilities. This makes it possible to increase energy recovery efficiency at each facility and maximize power generation.

Furthermore, by coordinating multiple facilities, the capacity of the storage pit can be reduced, or there is no need to install multiple processing devices in one facility. Therefore, when constructing a new waste treatment facility, it is possible to downsize the waste treatment facility, thereby reducing the construction cost and maintenance cost per waste treatment facility.

[Item 2]
In the waste treatment plan calculation device of item 1, the data acquisition device is configured to provide at least one of the plurality of facilities with waste acceptance for other facilities due to an unplanned shutdown that does not follow the startup/shutdown plan. If a request or a request for waste treatment exceeds the allowable value determined based on the estimated total amount brought in, the amount requested to be accepted based on the waste acceptance request or the waste treatment request is obtained. , the arithmetic unit determines that the requested acceptance amount is less than or equal to the upper limit of the total acceptable amount based on a modified total acceptable amount range that is the sum of the waste allowable amount ranges in operable facilities among the plurality of facilities. Modify the activation/shutdown plan for at least one of the operable facilities, and use the revised activation/shutdown plan to correct the shared processing plan for each operable facility. You may.

According to the above configuration, even if it becomes difficult to operate according to the startup/shutdown plan due to an unplanned shutdown in a certain facility or a large-scale disaster that generates more waste than originally expected, Since the waste sharing treatment plan can be modified between multiple facilities, it is possible to prevent waste treatment from stagnation.

[Item 3]
In the waste treatment plan calculation device of Item 2, the calculation unit may modify the activation/shutdown plan so as to raise the upper limit of the waste transportable amount range based on the original activation/shutdown plan.

[Item 4]
In the waste treatment plan calculation device of Item 2, the calculation unit calculates the processing device so that the operation rate of the treatment device is the highest based on operation constraint data of at least one of the operable facilities. The above-mentioned startup/shutdown plan is corrected for each processing device, and the corrected total waste transportable amount range is calculated using the waste transportable amount range based on the revised startup/shutdown plan, and the above-mentioned operational constraint data is calculated for each processing device. The processing unit may include an upper limit value of a continuous operation period for each processing device, a lower limit value of a continuous stop period for each processing device, and a periodic inspection plan for the processing device.

[Item 5]
In the waste treatment plan calculation device of Item 4, the operational constraint data may include the current remaining amount of the storage pit in the facility where the startup/shutdown plan is to be modified and the waste treatment amount plan in the facility.

According to the above configuration, it is possible to modify the startup/shutdown plan more realistically based on the current situation in the operable facility.

[Item 6]
In the waste treatment plan calculation device according to any one of items 1 to 5, the calculation unit calculates an upper limit value of a continuous operation period for each treatment device, a lower limit value of a continuous stop period for each treatment device, and a lower limit value of a continuous stop period for each treatment device. The startup/shutdown plan for each processing device is determined from the regular inspection plan so that the operating rate of the processing device is the highest, and in the reconsideration process, the startup/shutdown plan is determined by lowering the operating rate of the processing device. may be re-determined.

According to the above configuration, it is possible to efficiently determine an appropriate activation/shutdown plan by adjusting the range of total transportable amount while lowering the operating rate from the activation/shutdown plan with the highest operating rate.

[Item 7]
A waste treatment plan calculation method according to another aspect of the present disclosure is a waste treatment plan calculation method for calculating a shared treatment plan for sharing the amount of waste to be treated among a plurality of facilities that process waste. Each of the plurality of facilities includes a storage pit that temporarily stores the waste transported to the facility, and a processing device that processes the waste, and the method includes An estimated value of the amount of waste brought in, a startup/shutdown plan that defines a startup period during which waste is processed and a shutdown period during which the waste processing is stopped within the first unit period for each of the processing equipment, and the above for each facility. A processing load operation range that defines the range of processing amount in the processing device and a storage amount operation range that defines the range of storage amount in the storage pit for each facility are obtained, and the start/stop plan, the processing load operation range, and the storage amount operation range for each facility are acquired. The range of the amount of waste that can be carried in for each facility is calculated from the storage amount operation range, and the estimated total amount of waste that can be carried in at the plurality of facilities is calculated by summing the estimated amount of waste that can be carried in at the plurality of facilities. It is determined whether or not the estimated total amount is within the total allowable amount range, and if the estimated total amount is within the total allowable amount range, the total amount is determined based on a predetermined standard. The estimated value of the amount carried in is distributed to the plurality of facilities to determine a shared processing plan for each facility, and if the estimated value of the total amount carried in is not within the range of the total allowable amount carried in, the estimated value of the amount carried in is divided among the plurality of facilities. A reconsideration process is performed to review the startup/shutdown plan for at least one of the facilities.

1, 1A, 1B, 1C Waste treatment facility 2 Incinerator (processing equipment)
9 Storage pit 31 Waste treatment plan calculation device 32 Data acquisition device 34 Calculation device

Claims (7)

A waste treatment plan calculation device that calculates a shared treatment plan for sharing the amount of waste to be treated between a plurality of waste treatment facilities, the device comprising:
a data acquisition device;
Comprising a computing unit,
Each of the plurality of facilities includes a storage pit that temporarily stores the waste transported to the facility, and a processing device that processes the waste,
The data acquisition device includes an estimated amount of waste brought in for each facility in a first unit period, an activation period for processing waste in the first unit period for each processing device, and a stop period for processing the waste. obtain a startup/shutdown plan that defines a shutdown period for each facility, a processing load operation range that defines a range of processing amount in the processing device for each facility, and a storage amount operation range that defines a range of storage amount in the storage pit for each facility;
The arithmetic unit is
Calculating the range of waste that can be carried in for each facility from the startup/shutdown plan for each facility, the processing load operation range, and the storage amount operation range,
Determining whether the estimated total amount of imported waste, which is the sum of the estimated amount of imported waste at the plurality of facilities, is included within the range of the total amount that can be brought in, which is the sum of the range of the amount of waste that can be imported at the plurality of facilities. death,
When the estimated total amount brought in is within the range of total possible amount brought in, the estimated total amount brought in is distributed to the plurality of facilities based on a predetermined criterion, and a shared processing plan is made for each facility. decide,
performing a reconsideration process to review the startup/shutdown plan for at least one of the plurality of facilities when the estimated total amount to be brought in is not within the range of total possible amount to be brought in; and discarding. Material processing planning calculation device. The data acquisition device is configured to request at least one of the plurality of facilities to receive waste from another facility due to an unplanned shutdown that does not follow the start-up/shutdown plan, or to send a request to at least one of the plurality of facilities to receive waste from another facility due to an unplanned shutdown that does not follow the start-up/shutdown plan, or a request to the estimated total amount brought in. If a waste treatment request for an amount exceeding the allowable value determined based on the above occurs, obtain the waste acceptance request or the acceptance request amount based on the waste treatment request,
The arithmetic unit is
The amount requested to be accepted is equal to or less than the upper limit of the total acceptable amount based on the corrected total acceptable amount range that is the sum of the possible waste amount ranges of the operable facilities among the plurality of facilities. modifying the startup/shutdown plan for at least one of the operable facilities;
The waste treatment plan calculation device according to claim 1, wherein the divided treatment plan for each operable facility is revised using the revised startup/shutdown plan. 3. The waste treatment plan calculation device according to claim 2, wherein the computing unit corrects the activation/shutdown plan so as to raise an upper limit value of the range of the amount of waste that can be carried in based on the original activation/shutdown plan. The arithmetic unit is
modifying the startup/shutdown plan for each processing device so that the operating rate of the processing device is the highest based on operational constraint data for at least one of the operable facilities;
Calculating the revised total waste transportable amount range using the waste transportable amount range based on the revised startup/shutdown plan,
The waste treatment according to claim 2, wherein the operation restriction data includes an upper limit value of a continuous operation period for each of the processing devices, a lower limit value of a continuous stop period for each of the processing devices, and a periodic inspection plan for the processing device. Planning calculation device. 5. The waste treatment plan calculation device according to claim 4, wherein the operation restriction data includes the current remaining amount of the storage pit in the facility where the startup/shutdown plan is to be modified and a waste treatment amount plan in the facility. The arithmetic unit is
Based on the upper limit of the continuous operation period for each processing device, the lower limit of the continuous stop period for each processing device, and the periodic inspection plan of the processing device, the operation rate of the processing device is determined to be the highest. determining the startup/shutdown plan;
The waste treatment plan calculation device according to any one of claims 1 to 5, wherein in the reconsideration process, the operation rate of the treatment device is lowered and the startup/shutdown plan is re-determined. A waste treatment plan calculation method for calculating a shared treatment plan for sharing the amount of waste to be treated between a plurality of waste treatment facilities, the method comprising:
Each of the plurality of facilities includes a storage pit that temporarily stores the waste transported to the facility, and a processing device that processes the waste,
The method includes:
An estimated value of the amount of waste brought in for each facility in a first unit period, a startup period for processing waste within the first unit period, and a stop period for stopping the waste processing for each processing device are determined. obtaining a startup/shutdown plan, a processing load operating range that defines the range of processing amount in the processing device for each facility, and a storage amount operating range that defines the range of the storage amount in the storage pit for each facility;
Calculating the range of waste that can be carried in for each facility from the startup/shutdown plan for each facility, the processing load operation range, and the storage amount operation range,
Determining whether the estimated total amount of imported waste, which is the sum of the estimated amount of imported waste at the plurality of facilities, is included within the range of the total amount that can be brought in, which is the sum of the range of the amount of waste that can be imported at the plurality of facilities. death,
When the estimated total amount brought in is within the range of total possible amount brought in, the estimated total amount brought in is distributed to the plurality of facilities based on a predetermined criterion, and a shared processing plan is made for each facility. decide,
performing a reconsideration process to review the startup/shutdown plan for at least one of the plurality of facilities when the estimated total amount to be brought in is not within the range of total possible amount to be brought in; and discarding. Material processing plan calculation method.

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