Waste disposal planning calculation device and waste disposal planning calculation method

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

Technical Field

[0001] The present disclosure relates to a waste treatment plan calculation device and a waste treatment plan calculation method.

Background Art

[0002] In a waste treatment facility that performs treatment such as incineration on waste, waste collected from various places every day is carried in, stored in a temporary storage pit, and then sequentially processed by a treatment device. In the waste treatment facility, power is generated using the thermal energy generated during the treatment, and it is used as the power source of the waste treatment facility, supplied to the surrounding area, or sold.

[0003] However, conventionally, since waste treatment facilities are operated individually, there are the following problems. For example, there is a need for regular inspections and repair work in the facility, and it is necessary to stop the treatment device during the regular inspection period. Therefore, in the waste treatment facility, for each treatment device, a start-stop plan that determines the start-up period for executing the treatment and the stop period for stopping the treatment is formulated, and the waste treatment facility is operated based on the start-stop plan of the treatment device. Thus, in the waste treatment facility, since it is necessary to stop the treatment device, it is necessary to make the capacity of the storage pit somewhat large. In addition, in preparation for regular inspections and failures of the treatment device, many facilities have a plurality of treatment devices, and as a result, the operating rate of each treatment device during normal times cannot be increased. This leads to a deterioration in the recovery efficiency of thermal energy.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Patent Document 1 discloses a configuration that allows for the remote operation of multiple waste treatment facilities by connecting them via a communication network. Patent Document 1 also discloses that waste treatment facilities can be stably operated by grouping them based on the type of furnace, etc., and having one operator manage the operation of multiple waste treatment facilities belonging to the same group. However, it does not mention how to increase the operating rate of furnaces in waste treatment facilities, and there is room for improvement.

[0006] Furthermore, Patent Document 2 discloses a system for trading the waste processing capacity of multiple waste treatment facilities. However, the system in Patent Document 2 focuses on transactions between waste generators and waste treatment facilities, and does not take into account the start-up and shutdown plans of waste treatment facilities.

[0007] Therefore, the purpose of this disclosure is to provide a waste treatment planning calculation device and a waste treatment planning calculation method that can increase the operating rate of waste treatment facilities. [Means for solving the problem]

[0008] A waste treatment planning calculation device according to one aspect of the present disclosure is a waste treatment planning calculation device that calculates a distribution plan for distributing the amount of waste treatment among a plurality of facilities that treat waste, comprising a data acquirer and a calculation unit, wherein each of the plurality of facilities includes a storage pit for temporarily storing waste transported to the facility and a processing device for treating the waste, and the data acquirer acquires an estimated amount of waste transported to each facility in a first unit period, a start-up / stop plan that defines a start-up period for processing waste and a stop-down period for stopping waste processing for each processing device within the first unit period, a processing load operation range that defines the range of processing volume in the processing device for each facility, and a storage volume operation range that defines the range of storage volume in the storage pit for each facility. The arithmetic unit then calculates the range of waste that can be brought in for each facility from the start-up / shut-down plan, processing load operating range, and storage capacity operating range for each facility, determines whether the total estimated amount of waste brought in, which is the sum of the estimated amounts of waste brought in for the multiple facilities, falls within the total range of waste that can be brought in, which is the sum of the ranges of waste that can be brought in for the multiple facilities, and if the total estimated amount of waste brought in falls within the total range of waste that can be brought in, it distributes the total estimated amount of waste brought in to the multiple facilities based on predetermined criteria to determine the processing plan for each facility, and if the total estimated amount of waste brought in does not fall within the total range of waste that can be brought in, it performs a review process to revise the start-up / shut-down plan for at least one of the multiple facilities.

[0009] A waste treatment planning calculation method according to another aspect of the present disclosure is a waste treatment planning calculation method for calculating a shared treatment plan for sharing the amount of waste to be treated among a plurality of facilities that treat waste, wherein each of the plurality of facilities includes a storage pit for temporarily storing waste transported to the facility and a treatment device for treating the waste, and the method obtains an estimated amount of waste transported to each facility in a first unit period, a start-up / stop-down plan which defines a start-up period for treating waste and a stop-down period for stopping waste treatment for each treatment device within the first unit period, a processing load operation range which defines a range of processing volume in the treatment device for each facility, and a storage volume operation range which defines a range of storage volume in the storage pit for each facility, and for each facility The system calculates the range of waste that can be brought in for each facility from the aforementioned start-up / shut-down plan, the processing load operating range, and the storage capacity operating range. It determines whether the total estimated amount of waste brought in, obtained by summing the estimated amounts of waste brought in for the multiple facilities, falls within the total range of waste that can be brought in, obtained by summing the ranges of waste that can be brought in for the multiple facilities. If the total estimated amount of waste brought in falls within the total range of waste that can be brought in, it distributes the total estimated amount of waste brought in to the multiple facilities based on predetermined criteria to determine the processing plan for each facility. If the total estimated amount of waste brought in does not fall within the total range of waste that can be brought in, it performs a review process to revise the start-up / shut-down plan for at least one of the multiple facilities. [Effects of the Invention]

[0010] According to this disclosure, it is possible to provide a waste treatment planning device and a waste treatment planning method that can increase the operating rate of waste treatment facilities. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic diagram showing a waste treatment facility that is the target of the waste treatment planning calculation device according to one embodiment of the present disclosure. [Figure 2] Figure 2 is a block diagram showing the schematic configuration of a waste treatment planning calculation device according to one embodiment of the present disclosure. [Figure 3]Figure 3 is a flowchart showing the calculation flow for determining the work distribution plan in this embodiment. [Figure 4] Figure 4 is a graph showing an example of the estimated total input volume and the range of total input volume in this embodiment. [Figure 5] Figure 5 is a graph showing an example of a change in the startup / shutdown plan. [Figure 6] Figure 6 is a graph showing the results of a re-examination of the total transportable volume range shown in Figure 4. [Figure 7] Figure 7 is an illustrative diagram showing an example of a modification to the work distribution plan in the event of an unplanned shutdown in this embodiment. [Figure 8] Figure 8 is a flowchart showing the calculation flow for determining the distribution of processing plans in the event of an unplanned shutdown in this embodiment. [Modes for carrying out the invention]

[0012] The following describes a waste treatment planning calculation device according to one embodiment of this disclosure. First, an example of a prerequisite waste treatment facility will be described.

[0013] [Overview of the waste treatment facility] Figure 1 is a schematic diagram showing a waste treatment facility targeted by a waste treatment planning calculation device according to one embodiment of the present disclosure. In this embodiment, the waste treatment facility 1 is configured as an incineration plant equipped with 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 boiler 4 which is a steam recovery device that recovers waste heat as steam from the incinerator exhaust gas discharged from the incinerator 2. A hopper 5 and a dust feeder 6 are located 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. An economizer, a cooling tower, a dust collector, and a blower are arranged in order from the upstream side in the exhaust path 7.

[0014] The waste treatment facility 1 includes a storage pit 9 for temporarily storing the waste to be fed into the incinerator 2 on the side opposite to the furnace chamber 3 of the hopper 5. A crane 10 is provided above the storage pit 9. The waste stored in the storage pit 9 is fed into the hopper 5 by the crane 10. The feeder 6 feeds the waste introduced into the hopper 5 into the furnace chamber 3 of the incinerator 2 by operating intermittently at a predetermined interval or continuously at a predetermined speed.

[0015] The incinerator 2 has a stoker provided below the furnace chamber 3. The stoker functions as a waste conveying means. The stoker has a drying stoker 11, a combustion stoker 12, and a post-combustion stoker 13 in order from the side closer to the feeder 6. That is, these stokers 11, 12, 13 are arranged in the waste moving direction. Below the drying, combustion, and post-combustion stokers 11, 12, 13, wind boxes 14, 15, 16 are respectively arranged. Further, the incinerator 2 has a reburning chamber 17 continuous with the furnace chamber 3 between the furnace chamber 3 and the boiler 4. Note that the combustion stoker 12 is one stage in the illustrated example, but may be provided in two or more stages. The drying stoker 11, the combustion stoker 12, and the post-combustion stoker 13 operate intermittently at different intervals, for example.

[0016] In the furnace chamber 3, combustion gas is generated by the thermal decomposition and partial oxidation reactions of the waste, and this combustion gas is burned together with the waste. The reburning chamber 17 is for completely burning the combustion gas flowing out from the furnace chamber 3. The ash after the combustion of the waste is discharged from a discharge port 18 provided adjacent to the post-combustion stoker 13.

[0017] In the boiler 4, steam is generated by the waste heat obtained from the exhaust gas discharged from the incinerator 2. More specifically, as shown in FIG. 1, the boiler 4 includes a radiation chamber 19 disposed above the reburning chamber 17, a first flue 20 whose upper part communicates with the radiation chamber 19, and a second flue 21 whose lower part communicates with the first flue 20. The steam generated from the waste 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. Also, the surplus electric power is supplied to the surrounding area or sold to an electric power company. Most of the exhaust gas that has passed through the boiler 4 is discharged into the atmosphere from the chimney 8 after flowing through the exhaust path 7.

[0018] In addition, in FIG. 1, the waste treatment facility 1 is illustrated as having one incinerator 2, but the waste treatment facility 1 may be provided with a plurality of incinerators 2, that is, a plurality of treatment devices.

[0019] Here, there are operational restrictions on the treatment of waste in the waste treatment facility 1. For example, the operational restrictions in the waste treatment facility 1 include the upper limit value of the continuous operation period of the incinerator 2, the lower limit value of the continuous stop period of the incinerator 2 or the generator 23, the regular inspection plan of the incinerator 2, the upper and lower limit values of the treatment amount per unit time in the incinerator 2, and the upper and lower limit values of the capacity of the storage pit 9, etc.

[0020] The continuous operation period of the incinerator 2 is predetermined for each incinerator 2 to maintain the capacity of the incinerator 2. The lower limit value of the continuous stop period of the incinerator 2 and the regular inspection plan are determined for each incinerator 2 as maintenance restrictions of the incinerator 2, such as X times a year and stopping for Y days each time. The same applies to the stop period of the generator 23. The upper limit value of the treatment amount and the upper limit value of the capacity of the storage pit 9 are predetermined for each waste treatment facility 1 as values indicating the performance upper limit of the waste treatment facility 1. The lower limit value of the treatment amount and the lower limit value of the capacity of the storage pit 9 are predetermined for each waste treatment facility 1 as the minimum necessary values for the incinerator 2 to continuously perform the waste incineration operation.

[0021] [Configuration of the waste treatment planning calculation unit] Figure 2 is a block diagram showing the schematic configuration of a waste treatment planning device according to one embodiment of the present disclosure. The waste treatment planning device 31 shown in Figure 2 calculates a distribution plan for distributing the amount of waste treatment among multiple waste treatment facilities 1A, 1B, and 1C. The waste treatment planning device 31 includes a data acquirer 32, a memory unit 33, a calculator 34, and an output unit 35. Each component 32, 33, 34, and 35 communicates data with each other via a bus 36. In the example in Figure 2, the waste treatment planning device 31 is connected to the control devices of the multiple waste treatment facilities 1A, 1B, and 1C via a communication network 37 such as the Internet. In the example in Figure 2, three waste treatment facilities, namely Facility A 1A, Facility B 1B, and Facility C 1C, are exemplified as multiple waste treatment facilities, but there can be two or more waste treatment facilities. Hereafter, waste treatment facilities may be simply abbreviated as facilities.

[0022] The data acquisition device 32 acquires various types of data, which will be described later. The data acquisition device 32 may be configured as an input device for user input operations, or as a communication interface for receiving various types of data transmitted from the control device of the waste treatment facility 1. The memory device 33 stores the various types of data acquired by the data acquisition device 32. The memory device 33 also has a distribution processing plan calculation program pre-stored in it.

[0023] The arithmetic unit 34 includes a computer such as a microcontroller or a personal computer. For example, the arithmetic unit 34 includes a CPU, main memory such as RAM, etc. The arithmetic unit 34 calculates a distribution processing plan, which will be described later, based on various information stored in the memory unit 33. To this end, the arithmetic unit 34 performs functions such as a range calculation unit 41, a distribution processing plan determination unit 42, and a start / stop plan determination unit 43 by executing a distribution processing plan calculation program.

[0024] The functions of the elements disclosed herein can be performed using circuits or processing circuits that include general-purpose processors, dedicated processors, integrated circuits, ASICs (Application Specific Integrated Circuits), conventional circuits, or combinations thereof, configured or programmed to perform the disclosed functions. A processor is considered a processing circuit or circuit because it includes transistors and other circuits. In this specification, a circuit, unit, or means is hardware that performs the enumerated functions, or hardware programmed to perform the enumerated functions. The hardware may be hardware disclosed herein, or other known hardware that is programmed or configured to perform the enumerated functions. If the hardware is a processor, which is considered a type of circuit, then the circuit, unit, or means is a combination of hardware and software, and the software is used to configure the hardware or processor.

[0025] The output unit 35 outputs the calculation results from the arithmetic unit 34. For example, the output unit 35 displays the facility-specific processing plan and start / stop plan on a display device connected to the waste treatment plan calculation device 31. The output unit 35 may also be configured as a communication interface to transmit data including the processing plan and start / stop plan to the corresponding facilities 1A, 1B, and 1C.

[0026] [Determination of the division of labor plan during normal times] Figure 3 is a flowchart showing the calculation flow for determining the allocation of waste treatment in this embodiment. The example in Figure 3 shows the calculation flow for determining the allocation of waste treatment for each facility 1A, 1B, and 1C based on the predicted values ​​of waste to be brought into each facility 1A, 1B, and 1C.

[0027] First, the start-up / shut-down plan determination unit 43 determines the start-up / shut-down plan for each processing unit, i.e., each incinerator 2, for each first unit period, based on the operational constraint data at each facility 1A, 1B, and 1C (step SA1). To this end, the data acquisition unit 32 acquires the upper limit of the continuous operating period for each incinerator 2, the lower limit of the continuous shutdown period for each incinerator 2, and the periodic inspection plan for each incinerator 2 as operational constraint data. The data acquisition unit 32 may acquire this data from each facility 1A, 1B, and 1C each time a start-up / shut-down plan is determined, or it may store the previously acquired data in the memory unit 33 and read it from the memory unit 33.

[0028] For example, the first unit period is set to one year. Alternatively, the first unit period may be arbitrarily set each time the processing plan is calculated. Furthermore, the upper limit of the continuous operation period and the lower limit of the continuous shutdown period are predetermined as operational constraints for each facility 1A, 1B, and 1C. The continuous operation period and the continuous shutdown period are set, for example, in days. For example, the upper limit of the continuous operation period is set to 100 days, and the lower limit of the continuous shutdown period is set to 5 days. The periodic inspection plan specifies a schedule for periodic inspections or repairs that involve shutting down incinerator 2.

[0029] The Start-up / Shutdown Plan Determination Unit 43 determines the start-up / shutdown plan for each incinerator 2 by determining when and for how long to operate or shut down the incinerator 2 in the first unit period based on this operational constraint data. The Start-up / Shutdown Plan Determination Unit 43 determines the start-up / shutdown plan for each incinerator 2 so as to maximize the operating rate of each incinerator 2. The start-up / shutdown plans for multiple facilities 1A, 1B, and 1C can be determined independently of each other. That is, the shutdown periods of the incinerators 2 among the multiple facilities 1A, 1B, and 1C may overlap. However, instead, the start-up / shutdown plans for multiple facilities 1A, 1B, and 1C may be determined so that the shutdown periods of each incinerator 2 included in the multiple facilities 1A, 1B, and 1C do not overlap as much as possible. The determined start-up / shutdown plan for each incinerator 2 is stored in the memory unit 33 in association with the facility 1A, 1B, and 1C in which that incinerator 2 is included.

[0030] The range calculation unit 41 calculates the waste transportable range P for each facility from the start-up / shut-down plan for each facility, the processing load operating range for each facility, and the storage capacity operating range for each facility (step SA2). For this purpose, the data acquisition unit 32 acquires the start-up / shut-down plan for each facility, the processing load operating range for each facility, and the storage capacity operating range for each facility. As the start-up / shut-down plan for each facility, the data acquisition unit 32 reads out the start-up / shut-down plan for each incinerator 2 stored in the memory unit 33 for each facility. The data acquisition unit 32 may acquire the processing load operating range and the storage capacity operating range for each facility from each facility 1A, 1B, 1C each time the waste transportable range P is calculated, or it may store the previously acquired data in the memory unit 33 and read it out from the memory unit 33.

[0031] The processing load operating range is determined by the minimum amount of waste supplied to the incinerator 2 per unit time necessary to continue incinerating waste in the incinerator 2, and the maximum amount of waste that the incinerator 2 can incinerate supplied to the incinerator 2 per unit time. The storage volume operating range is determined by the minimum amount of waste that should be stored in the storage pit 9 in order to maintain the minimum value in the processing load operating range, and the maximum amount of waste that can be stored in the storage pit 9. The supply amount and storage amount are determined, for example, by weight, volume, or a combination thereof. As described above, the start-up and shutdown plan for each facility includes the start-up and shutdown plans for the incinerators 2 included in that facility. For example, if one facility has multiple incinerators 2, the range calculation unit 41 considers all the start-up and shutdown plans for the multiple incinerators 2 as the start-up and shutdown plan for that facility.

[0032] The waste transportable volume range P is defined as the range between the lower limit Pmin and the upper limit Pmax. The waste transportable volume range P is defined as the range between the minimum amount of waste required to operate the incinerator 2 according to the start-up and shutdown plan when the operating rate of the incinerator 2 is at its highest, and the maximum amount of waste that can be transported. The range calculation unit 41 calculates the total transportable volume range Pt by summing the transportable volume ranges P of the multiple facilities 1A, 1B, and 1C (step SA3). The total transportable volume range Pt is defined as the range between the lower limit Ptmin and the upper limit Ptmax.

[0033] Furthermore, the range calculation unit 41 calculates a total estimated waste volume Ct by summing the estimated waste volume values ​​for multiple facilities 1A, 1B, and 1C (step SA4). For this purpose, the data acquisition unit 32 acquires the estimated waste volume for each facility during the first unit period. The estimated waste volume is calculated by estimating the amount of waste brought into each facility based on past operating records for each facility 1A, 1B, and 1C, waste discharge forecast information based on business plans of factories that discharge waste, or surrounding environmental information such as population changes in the waste collection area and increases or decreases in large facilities such as factories. The data acquisition unit 32 may acquire the estimated waste volume for each facility from each facility 1A, 1B, and 1C, or it may acquire operating records of facilities, waste discharge forecast information, or surrounding environmental information and calculate the estimated waste volume for each facility from the data acquired by the range calculation unit 41. The data acquisition device 32 may acquire estimated waste volume values ​​for each facility from each facility 1A, 1B, and 1C each time it calculates the total estimated waste volume Ct, or it may store previously acquired data in the memory device 33 and read it from the memory device 33.

[0034] The estimated waste volume is calculated by dividing the first unit period into shorter second unit periods and summing the estimated values ​​for each second unit period. For example, if the first unit period is one year and the second unit period is one month, the estimated waste volume will be the sum of the monthly estimates for 12 months. Furthermore, the estimated values ​​for each second unit period may fluctuate depending on the temperature, humidity, time of year, etc. This seasonal fluctuation means that the amount of waste generated may fluctuate, for example, during holiday periods or peak seasons.

[0035] Similarly, the estimated total inflow amount Ct is also constructed by dividing the first unit period into two unit periods and summing the estimated values ​​for each second unit period. Figure 4 is a graph showing an example of the estimated total inflow amount and the range of total inflow possible in this embodiment. The horizontal axis is set to 0, where the start time of the first unit period is 0, and T1 is the time after the first unit period has elapsed from the start time. The vertical axis shows the sum of the weights. Therefore, the graph of the estimated total inflow amount Ct is shown as a graph that changes horizontally or upward to the right for each second unit period.

[0036] Therefore, in Figure 4, the total transportable volume range Pt is shown as a graph where the total transportable volume range for the first unit period is the sum of the total transportable volume ranges for the second unit period and the first unit period. For example, if the first unit period is one year and the second unit period is one month, the graph of the total transportable volume range Pt is shown as a graph where the total transportable volume range for each month is Pt / 12. Also, in Figure 4, it is schematically shown that the total transportable volume range Pt is the sum of the waste transportable volume ranges P(1A), P(1B), and P(1C) for each facility 1A, 1B, and 1C.

[0037] The range calculation unit 41 determines whether the estimated total input amount Ct is included within the total input capacity range Pt (step SA5). More specifically, for each second unit period, the range calculation unit 41 determines whether the estimated total input amount Ct in the first unit period is located between the upper limit Ptmax and the lower limit Ptmin in the total input capacity range Pt. That is, in Figure 4, it is determined whether the entire range of the estimated total input amount Ct in the first unit period from time 0 to T1 is included within the region of a triangle with the origin 0, the upper limit Ptmax, and the lower limit Ptmin as its vertices.

[0038] As mentioned above, the total load capacity range Pt is determined based on the start-up and shutdown plan for each incinerator 2, which is determined to maximize the operating rate of each incinerator 2 in each facility 1A, 1B, and 1C. Therefore, under normal circumstances, the total load capacity range Pt, when the operating rate of the incinerators 2 is at its highest, is set to a range that allows for a significantly larger load than the estimated total load capacity Ct. In other words, as shown in Figure 4, the total load capacity range Pt is located above the graph of the estimated total load capacity Ct.

[0039] As a result, the range calculation unit 41 determines that the estimated total transport volume Ct is outside the total transport capacity range Pt (No in step SA5). If the estimated total transport volume Ct is not included within the total transport capacity range Pt, the arithmetic unit 34 performs a reassessment process to review the start-up and shutdown plan for at least one of the multiple facilities 1A, 1B, and 1C.

[0040] In the reassessment process, the start-up / shut-down plan determination unit 43 reduces the operating rate of the incinerator 2 at the facility under reassessment and re-determines the start-up / shut-down plan (step SA6). Figure 5 is a graph showing an example of a change in the start-up / shut-down plan. The upper graph in Figure 5 shows the initial start-up / shut-down plan Qini when the operating rate of the incinerator 2 is at its highest, and the lower graph in Figure 5 shows the revised start-up / shut-down plan Qmod when the operating rate of the incinerator 2 is reduced.

[0041] As shown in Figure 5, by shortening some of the startup periods and lengthening some of the shutdown periods in the initial startup-shutdown plan Qini when the operating rate of incinerator 2 is at its highest, the operating rate of incinerator 2 in the first unit period is reduced. The startup-shutdown plan determination unit 43 re-determines the startup-shutdown plan to reduce the operating rate of incinerator 2 at the facility under review by a predetermined reduction amount. The facility under review may be all of the multiple facilities 1A, 1B, and 1C, or some of them. The facility under review is predetermined and stored in the memory unit 33 as facility data under review.

[0042] The range calculation unit 41 recalculates the total load capacity range Pt using the re-determined modified start / stop plan Qmod (steps SA2 and SA3). The range calculation unit 41 determines whether the estimated total load capacity Ct is included in the recalculated total load capacity range Pt (step SA4). The arithmetic unit 34 repeats the re-examination process until the estimated total load capacity Ct is included in the total load capacity range Pt.

[0043] Figure 6 is a graph showing the results of a re-examination of the total transport capacity range shown in Figure 4. The graph in Figure 6 shows the state in which the estimated total transport capacity Ct is included in the total transport capacity range Pt.

[0044] The waste distribution plan determination unit 42 determines a waste distribution plan for each facility by distributing the estimated total amount Ct to multiple facilities 1A, 1B, and 1C based on predetermined criteria, if the estimated total amount Ct falls within the total amount range Pt that can be brought in (step SA7). The memory unit 33 stores in advance criteria for determining the waste distribution plan for multiple facilities 1A, 1B, and 1C. For example, the criteria include priority among facilities, distribution ratio, and distribution conditions. For example, the distribution ratio may be set based on the ratio of the maximum values ​​of the waste amount range P for multiple facilities 1A, 1B, and 1C, or the ratio of the power generation efficiencies for multiple facilities 1A, 1B, and 1C. Also, for example, the distribution conditions may include maximizing the total amount of electricity sold by multiple facilities 1A, 1B, and 1C in the first unit period, or minimizing the total amount of carbon dioxide emissions by multiple facilities 1A, 1B, and 1C in the first unit period. Alternatively, for example, the entire estimated total amount Ct may be distributed according to predetermined sharing ratios, or facility A may be given priority in distributing the amount up to the first threshold of the estimated total amount Ct, and the amount exceeding the first threshold may be distributed among multiple facilities 1A, 1B, and 1C according to predetermined sharing ratios.

[0045] The output unit 35 outputs the determined distribution plan along with the corresponding start-up and stop-down plan. When the output unit 35 is configured as a communication interface, it transmits data including the distribution plan and start-up and stop-down plan corresponding to each facility 1A, 1B, and 1C. The distribution plan determined in this way becomes the planned waste volume value for each facility 1A, 1B, and 1C.

[0046] At each facility 1A, 1B, and 1C, the waste treatment volume plan for the first unit period is determined based on their respective treatment plans, namely the planned waste input volume and the start-up / shut-down plan. The waste treatment volume plan includes the amount of waste supplied to incinerator 2 per unit time while incinerator 2 is in operation.

[0047] [Revision of the work allocation plan in the event of an unplanned shutdown] Figure 7 is an illustrative diagram showing an example of a modification to the work distribution plan in the event of an unplanned shutdown in this embodiment. In the example in Figure 7, facilities 1A, 1B, and 1C were operating based on the normal work distribution plan and start / stop plan shown in Figure 3, but this example illustrates a case where an unplanned shutdown, such as a malfunction, occurs at facility A 1A at time T2, on the way to time T1.

[0048] As shown in the upper graph of Figure 7, if an unplanned shutdown occurs at facility A 1A at time T2, waste processing at facility A 1A will become impossible. Therefore, if waste continues to be transported to facility A 1A according to the distribution plan, it will not be processed at facility A 1A, and the storage capacity limit in storage pit 9 at facility A 1A will be exceeded. For this reason, it becomes necessary to redistribute as much of the waste that can no longer be processed at facility A 1A to other operational facilities 1B and 1C as possible.

[0049] Therefore, in this embodiment, if an unplanned shutdown occurs in at least one of the multiple facilities 1A, 1B, and 1C that does not conform to the startup / shutdown plan, the startup / shutdown plan for the operational facilities 1B and 1C among the multiple facilities 1A, 1B, and 1C, and the total load capacity range Pt based thereon, are modified.

[0050] More specifically, the data acquisition unit 32 acquires the requested amount D of waste to be accepted based on the waste acceptance request from facility A 1A, where an unplanned shutdown occurred. The calculation unit 34 modifies the start-up and shutdown plan for at least one of the operational facilities 1B and 1C so that the requested amount D is less than or equal to the upper limit Rmax of the total acceptable amount based on the modified total acceptable amount range Ptc, which is the sum of the modified acceptable amount ranges Pc for the operational facilities 1B and 1C.

[0051] Figure 8 is a flowchart showing the calculation flow for determining the distribution of processing plans in the event of an unplanned shutdown in this embodiment. When the waste processing plan calculation device 31 receives notification from facility A 1A that an unplanned shutdown has occurred, it performs the following calculations. First, the start-up / shut-down plan determination unit 43 modifies the start-up / shut-down plan for each incinerator 2 for at least one of the operational facilities 1B and 1C, based on operational constraint data, so that the operating rate of the incinerator 2 is maximized (step SB1).

[0052] The facilities whose start-up and shutdown plans are modified may be all of the operational facilities 1B and 1C, or some of them. The facilities whose start-up and shutdown plans are modified, or the rules for determining those facilities, are stored in memory 33 in advance. The number of facilities whose start-up and shutdown plans are modified may change depending on the facility experiencing an unplanned shutdown, or the acceptance request amount D, etc. Alternatively, in the event of an unplanned shutdown, the user may arbitrarily decide which facilities whose start-up and shutdown plans are modified each time.

[0053] The start-up and shutdown plan that maximizes the operating rate of incinerator 2 is almost the same as the initial start-up and shutdown plan used to determine the normal processing allocation plan. However, the input operational constraint data may include the current operational data and the original start-up and shutdown plan for the facility, i.e., the normal start-up and shutdown plan. More specifically, the operational constraint data may include the operational constraint data used to determine the normal processing allocation plan, i.e., the upper limit of the continuous operating period for each processing unit, the lower limit of the continuous shutdown period for each processing unit, and the periodic maintenance plan for each processing unit, as well as the start-up and shutdown plan for each facility, the waste processing volume plan, and the current remaining capacity of the storage pit 9.

[0054] Each facility (1A, 1B, 1C) operates based on normal startup / shutdown plans and waste disposal plans. However, the actual amount of waste brought into each facility (1A, 1B, 1C) may vary from the estimated value and may fluctuate daily. Furthermore, the calorific value per unit volume of waste also changes depending on the season and time of day, as the waste's condition is affected by humidity, temperature, etc. For example, the calorific value per unit volume of waste decreases in the summer due to the higher moisture content of the waste. Therefore, the actual waste processing results at each facility (1A, 1B, 1C) may differ from the startup / shutdown plans and waste disposal plans.

[0055] Therefore, when modifying the startup and shutdown plan in the event of an unplanned shutdown, the current operational data is considered as operational constraint data, which allows for correction of errors in the processing results at each facility 1A, 1B, and 1C. As a result, the startup and shutdown plan can be modified to be more realistic.

[0056] The data acquisition device 32 may acquire current operational data from each facility when an unplanned shutdown occurs, or it may acquire the latest operational data from each facility 1A, 1B, and 1C periodically, for example, daily or hourly, regardless of whether an unplanned shutdown has occurred, and store it in the memory device 33, or update the contents of the memory device 33. By having the data acquisition device 32 periodically acquire the latest operational data, even if an unplanned shutdown suddenly occurs at a facility, the distribution processing plan can be revised as long as the acceptance request amount D is newly acquired.

[0057] The range calculation unit 41 modifies the waste ingress range P for each of the operational facilities 1B and 1C based on the modified start-up / shut-down plan, processing load operation range, and storage capacity operation range, and determines the modified ingress range Pc (step SB2). The method for determining the modified ingress range Pc is the same as the method for determining the waste ingress range P in the calculation of the normal distribution processing plan. The range calculation unit 41 calculates the modified total ingress range Ptc by summing the modified ingress ranges Pc for the operational facilities 1B and 1C (step SB3). The modified total ingress range Ptc is defined as the range between the lower limit Ptcmin and the upper limit Ptcmax.

[0058] The range calculation unit 41 calculates the upper limit of the total acceptable amount Rmax from the upper limit of the corrected total acceptable amount range Ptcmax (step SB4). The upper limit of the total acceptable amount Rmax is calculated by subtracting the upper limit of the uncorrected total acceptable amount range (P(1B)+P(1C)) in the operational facilities 1B and 1C, Ptmax(1B+1C), from the upper limit of the corrected total acceptable amount range Ptcmax.

[0059] The range calculation unit 41 determines whether the requested acceptance amount D is less than or equal to the upper limit Rmax of the total acceptance capacity (step SB5). If the requested acceptance amount D is less than or equal to the upper limit Rmax of the total acceptance capacity (Yes in step SB5), the start-up / shutdown plan determination unit 43 confirms the revised start-up / shutdown plan. The distribution processing plan determination unit 42 uses the revised start-up / shutdown plan to distribute the requested acceptance amount D to the operational facilities 1B and 1C, and revises the distribution processing plan for each operational facility 1B and 1C (step SB6).

[0060] The revised waste management plan for the operational facilities 1B and 1C will be the planned amount of waste brought in based on the normal waste management plan after the unplanned shutdown, plus the amount allocated to the requested acceptance amount D. The allocation of the requested acceptance amount D will also be based on predetermined criteria, similar to the determination of the normal waste management plan. Different criteria may be applied to the allocation of the requested acceptance amount D and the allocation of the estimated total waste brought in under normal circumstances Ct. For example, the allocation ratio may be set based on the ratio of the distance between facility A 1A, where the unplanned shutdown occurred, and the operational facilities 1B and 1C. Alternatively, the allocation ratio may be set considering the carbon dioxide emissions during waste transportation.

[0061] If the requested amount D exceeds the upper limit Rmax of the total amount that can be accepted (No in step SB5), the operational facilities 1B and 1C alone cannot accept the entire amount of the requested amount D. Therefore, the distribution processing plan determination unit 42 modifies the distribution processing plan by assuming that the operational facilities 1B and 1C will accept up to the upper limit Rmax of the total amount that can be accepted from the requested amount D (step SB7). At this time, the start-up / shut-down plan determination unit 43 confirms the modified start-up / shut-down plan. The distribution processing plan determination unit 42 uses the modified start-up / shut-down plan to distribute the upper limit Rmax of the total amount that can be accepted to the operational facilities 1B and 1C, and modifies the distribution processing plan for each operational facility 1B and 1C.

[0062] Furthermore, the output device 35 notifies facility A 1A, where an unplanned shutdown has occurred, that the entire amount of the requested acceptance quantity D cannot be accepted and the amount of unacceptable waste (D-Rmax). The unacceptable waste is temporarily stored in a temporary storage pit set up in one of the multiple facilities 1A, 1B, or 1C, or a separate acceptance request is made to an off-site facility for processing there.

[0063] According to the above configuration, the start-up and shutdown plans for each of the multiple facilities 1A, 1B, and 1C are determined from a value Ct which is the sum of the estimated amounts of waste brought into the multiple facilities 1A, 1B, and 1C. Therefore, flexible operation is possible in the multiple facilities 1A, 1B, and 1C, without being bound by the periodic maintenance period of any single facility. In other words, the operating rate of the incinerators 2 in the multiple facilities 1A, 1B, and 1C can be increased relative to the value Ct which is the sum of the estimated amounts of waste brought into the multiple facilities 1A, 1B, and 1C. This increases the energy recovery efficiency in each facility 1A, 1B, and 1C, and maximizes the amount of power generated.

[0064] Furthermore, by coordinating multiple facilities 1A, 1B, and 1C, the capacity of the storage pit 9 can be reduced, or it becomes unnecessary to install multiple incinerators 2 in a single facility. Therefore, when constructing a new waste treatment facility 1, it is possible to miniaturize the waste treatment facility 1, thereby reducing the construction and maintenance costs per waste treatment facility 1.

[0065] Furthermore, even if it becomes difficult to operate according to the start-up and shutdown plan due to an unplanned shutdown of one facility, the waste distribution plan can be modified among multiple facilities 1A, 1B, and 1C, thereby preventing a stagnation in waste processing. As a result, it is possible to prevent waste from being brought into multiple facilities 1A, 1B, and 1C in excess of the storage limit in the storage pit 9.

[0066] [Other embodiments] Although 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 are possible without departing from the spirit of the invention.

[0067] For example, in the above embodiment, a waste treatment facility 1 having a stoker-type incinerator 2 was given as an example for the waste treatment plan calculation, but it is not limited to this as long as it is a waste treatment facility equipped with a waste treatment device. For example, the waste treatment plan calculation method of this disclosure can also be applied to an incineration plant having a fluidized bed incinerator, a crushing and sorting plant having a crusher for crushing waste, etc. Furthermore, the waste treatment facility 1 may be equipped with treatment devices other than the incinerator 2. For example, the treatment devices may include a carbonization device or a landfill.

[0068] Furthermore, in the above embodiment, the first unit period was set to one year and the second unit period to one month, but the embodiment is not limited to this, and each period can be set in various ways.

[0069] Furthermore, while the above embodiment illustrates a configuration in which the waste treatment planning calculation device 31 is configured as an independent device or facility connected to multiple facilities 1A, 1B, and 1C via a communication network 37, the embodiment is not limited to this. For example, the waste treatment planning calculation device 31 may be installed in any of the waste treatment facilities 1A, 1B, and 1C. Alternatively, the waste treatment planning calculation device 31 may be installed in a management facility that manages the multiple facilities 1A, 1B, and 1C, or it may be installed separately from the management facility as an information processing device such as a cloud server. Or, there may be no management facility at all.

[0070] Furthermore, while the above embodiment illustrates how the waste treatment planning calculation device 31 determines or modifies the start-up and stop-down plans for each facility 1A, 1B, and 1C, it is not limited to this. For example, the start-up and stop-down plans for each facility 1A, 1B, and 1C may be determined at the corresponding facility 1A, 1B, and 1C, and the determined start-up and stop-down plans may be transmitted to the waste treatment planning calculation device 31. Also, the determination of the start-up and stop-down plans may be automatically determined by a predetermined determination program, or a user may create a start-up and stop-down plan and input it to the waste treatment planning calculation device 31. Thus, the arithmetic unit 34 of the waste treatment planning calculation device 31 does not have to operate as a start-up and stop-down plan determination unit 43.

[0071] Furthermore, in the above embodiment, an example was given in which the start-stop plan determination unit 43 modifies the start-stop plan as part of the start-stop plan review process, but the embodiment is not limited to this. For example, the output device 35 may output a notification that the start-stop plan needs to be modified. This notification may be output to be displayed on a display device connected to the waste treatment plan calculation device 31, or it may be transmitted to each facility 1A, 1B, 1C. In this case, the facility or user that receives the notification modifies the start-stop plan for the corresponding facility. After outputting the notification, the waste treatment plan calculation device 31 may wait for input of the modified start-stop plan.

[0072] Furthermore, while the above embodiment illustrates how to modify the waste distribution plan when a waste acceptance request is made to other facilities due to an unplanned shutdown of at least one of the multiple facilities 1A, 1B, and 1C that does not conform to the start-up / shut-down plan, the waste distribution plan can also be modified in the same manner as in the above embodiment when a waste disposal request occurs that exceeds the allowable value determined based on the estimated total amount of waste brought in, such as during a large-scale disaster. However, in this case, the facilities that can be operated are all of the multiple facilities 1A, 1B, and 1C, as in normal times. The data acquisition unit 32 acquires the acceptance request amount D based on the waste disposal request, and the calculation unit 34 modifies the start-up / shut-down plan and the waste distribution plan for each of the multiple facilities 1A, 1B, and 1C based on this. When distributing the acceptance request amount D in this case, in addition to or instead of the normal criteria, the distribution ratio may be set based on, for example, the ratio of the distance from the waste generation site for each of the multiple facilities 1A, 1B, and 1C. Alternatively, the distribution ratio may be set considering the carbon dioxide emissions during waste transportation.

[0073] Furthermore, in the above embodiment, an example was given in which the start-up and stop-down plans for each facility 1B and 1C are modified so that the operating rate of the incinerator 2 is highest in at least one of the operational facilities 1B and 1C in order to modify the distribution processing plan in the event of an unplanned shutdown. However, the modifications to the start-up and stop-down plans are not limited to this. For example, the start-up and stop-down plan determination unit 43 may modify the start-up and stop-down plans to increase the upper limit Pmax of the waste transportable amount range P based on the original start-up and stop-down plans.

[0074] In this case, the range calculation unit 41 may modify the waste transport range P by increasing the upper limit Pmax of the normal waste transport range P for the facility whose start-up / shut-down plan is to be modified by a predetermined amount. For example, in the example in Figure 7, when modifying the start-up / shut-down plan for facility B 1B, the slope of the line that determines the upper limit of the original waste transport range P(1B) in the upper graph of Figure 7 is increased. The start-up / shut-down plan determination unit 43 modifies the start-up / shut-down plan for the corresponding facility based on the modified transport range Pc. Here, the upper limit of the modified transport range Pc is set to the upper limit of the waste transport range based on the start-up / shut-down plan when the operating rate of the incinerator 2 is at its highest in the facility.

[0075] Furthermore, the range calculation unit 41 calculates the revised total waste acceptance range Ptc for the operational facilities 1B and 1C based on the revised waste acceptance range P, and calculates the upper limit Rmax of the total acceptance capacity based on that. If the requested acceptance amount D is greater than the calculated upper limit Rmax of the total acceptance capacity, the range calculation unit 41 again increases the upper limit Pmax of the waste acceptance range P for the facility to be revised by a predetermined amount. The start-up / stop-down plan determination unit 43 outputs the start-up / stop-down plan as the revised start-up / stop-down plan when the requested acceptance amount D becomes less than or equal to the upper limit Rmax of the total acceptance capacity.

[0076] Furthermore, when modifying the start-up / shut-down plan to increase the upper limit Pmax of the waste transport capacity range P, the lower limit Pmin of the waste transport capacity range P may also be increased in accordance with the increase in the upper limit Pmax, or the lower limit Pmin may be left unchanged.

[0077] [Summary of this disclosure] [Item 1] A waste treatment planning calculation device according to one aspect of the present disclosure is a waste treatment planning calculation device that calculates a distribution plan for distributing the amount of waste treatment among a plurality of facilities that treat waste, comprising a data acquirer and a calculation unit, wherein each of the plurality of facilities includes a storage pit for temporarily storing waste transported to the facility and a processing device for treating the waste, and the data acquirer acquires an estimated amount of waste transported to each facility in a first unit period, a start-up / stop plan that defines a start-up period for processing waste and a stop-down period for stopping waste processing for each processing device within the first unit period, a processing load operation range that defines the range of processing volume in the processing device for each facility, and a storage volume operation range that defines the range of storage volume in the storage pit for each facility. The arithmetic unit then calculates the range of waste that can be brought in for each facility from the start-up / shut-down plan, processing load operating range, and storage capacity operating range for each facility, determines whether the total estimated amount of waste brought in, which is the sum of the estimated amounts of waste brought in for the multiple facilities, falls within the total range of waste that can be brought in, which is the sum of the ranges of waste that can be brought in for the multiple facilities, and if the total estimated amount of waste brought in falls within the total range of waste that can be brought in, it distributes the total estimated amount of waste brought in to the multiple facilities based on predetermined criteria to determine the processing plan for each facility, and if the total estimated amount of waste brought in does not fall within the total range of waste that can be brought in, it performs a review process to revise the start-up / shut-down plan for at least one of the multiple facilities.

[0078] According to the above configuration, the start-up and shutdown plans for each of the multiple facilities are determined from the sum of the estimated amounts of waste brought into the multiple facilities. Therefore, flexible operation is possible at multiple facilities, without being bound by the periodic maintenance schedule of a single facility. In other words, the operating rate of the processing equipment at multiple facilities can be increased relative to the sum of the estimated amounts of waste brought into the multiple facilities. This increases the energy recovery efficiency at each facility and maximizes power generation.

[0079] Furthermore, by coordinating with multiple facilities, the capacity of the storage pit can be reduced, or the need to install multiple treatment devices at a single facility can be eliminated. As a result, when constructing new waste treatment facilities, the size of the facilities can be reduced, thereby lowering the construction and maintenance costs per facility.

[0080] [Item 2] In the waste treatment plan calculation device of item 1, the data acquirer may, when a waste acceptance request to other facilities occurs due to an unplanned shutdown at at least one of the multiple facilities that does not conform to the start-up / shut-down plan, or when a waste treatment request occurs for an amount exceeding the permissible value determined based on the estimated total amount of waste brought in, acquire the amount of waste acceptance request or the amount of waste acceptance request based on the waste treatment request, and the calculator may modify the start-up / shut-down plan at at least one of the operational facilities so that the amount of acceptance request is less than or equal to the upper limit of the total amount of acceptable waste based on the modified total amount of acceptable waste range obtained by summing the range of waste that can be brought in at the operational facilities among the multiple facilities, and then modify the distribution of treatment plans for each operational facility using the modified start-up / shut-down plan.

[0081] With the above configuration, even if an unplanned shutdown occurs at one facility, or if a large-scale disaster or other event generates more waste than initially anticipated, making it difficult to operate according to the startup and shutdown plan, the waste distribution plan can be modified among multiple facilities, thereby preventing a stagnation in waste processing.

[0082] [Item 3] In the waste treatment plan calculation device of item 2, the calculator may modify the start-up and stop-down plan to increase the upper limit of the range of waste that can be brought in, based on the original start-up and stop-down plan.

[0083] [Item 4] In the waste treatment plan calculation device of item 2, the calculator modifies the start-up and shutdown plan for each processing device so that the operating rate of the processing device is highest, based on operational constraint data from at least one of the operational facilities, and calculates the modified total waste transportable range using the waste transportable range based on the modified start-up and shutdown plan. The operational constraint data may include the upper limit of the continuous operating period for each processing device, the lower limit of the continuous shutdown period for each processing device, and the periodic inspection plan for each processing device.

[0084] [Item 5] In the waste treatment planning calculation device of item 4, the operational constraint data may include the current remaining amount of the storage pit at the facility whose start-up / shut-down plan is being modified, and the waste treatment volume plan at that facility.

[0085] With the above configuration, it is possible to revise the start-up and shutdown plan to be more realistic, taking into account the current status of the operational facilities.

[0086] [Item 6] In any of the waste treatment planning calculation devices described in items 1 to 5, the calculation device determines the start-up and shutdown plan for each processing device based on the upper limit of the continuous operating period for each processing device, the lower limit of the continuous shutdown period for each processing device, and the periodic inspection plan for each processing device, so as to maximize the operating rate of the processing device. In the re-examination process, the start-up and shutdown plan may be re-determined by lowering the operating rate of the processing device.

[0087] According to the above configuration, an appropriate start-up and shutdown plan can be efficiently determined by adjusting the total load capacity range while decreasing the operating rate from the start-up and shutdown plan with the highest operating rate.

[0088] [Item 7] A waste treatment planning calculation method according to another aspect of the present disclosure is a waste treatment planning calculation method for calculating a shared treatment plan for sharing the amount of waste to be treated among a plurality of facilities that treat waste, wherein each of the plurality of facilities includes a storage pit for temporarily storing waste transported to the facility and a treatment device for treating the waste, and the method obtains an estimated amount of waste transported to each facility in a first unit period, a start-up / stop-down plan which defines a start-up period for treating waste and a stop-down period for stopping waste treatment for each treatment device within the first unit period, a processing load operation range which defines a range of processing volume in the treatment device for each facility, and a storage volume operation range which defines a range of storage volume in the storage pit for each facility, and for each facility The system calculates the range of waste that can be brought in for each facility from the aforementioned start-up / shut-down plan, the processing load operating range, and the storage capacity operating range. It determines whether the total estimated amount of waste brought in, obtained by summing the estimated amounts of waste brought in for the multiple facilities, falls within the total range of waste that can be brought in, obtained by summing the ranges of waste that can be brought in for the multiple facilities. If the total estimated amount of waste brought in falls within the total range of waste that can be brought in, it distributes the total estimated amount of waste brought in to the multiple facilities based on predetermined criteria to determine the processing plan for each facility. If the total estimated amount of waste brought in does not fall within the total range of waste that can be brought in, it performs a review process to revise the start-up / shut-down plan for at least one of the multiple facilities. [Explanation of Symbols]

[0089] 1,1A,1B,1C Waste treatment facilities 2. Incinerator (processing device) 9 Storage pit 31 Waste Management Planning Calculation Device 32 Data Acquisition Devices 34 Arithmetic unit

Claims

1. A waste treatment planning calculator that calculates a distribution plan for sharing the amount of waste to be treated among multiple facilities that treat waste, Data acquisition device, It comprises an arithmetic unit, Each of the aforementioned 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 acquires the estimated amount of waste brought in for each facility during the first unit period, a start-up / stop-down plan which defines the start-up period for processing waste and the stop-down period for stopping waste processing for each processing device during the first unit period, a processing load operation range which defines the range of processing volume for each processing device for each facility, and a storage volume operation range which defines the range of storage volume for each storage pit for each facility. The aforementioned arithmetic unit, The range of waste that can be brought in for each facility is calculated from the aforementioned start-up / shut-down plan, processing load operating range, and storage capacity operating range for each facility. It is determined whether the total estimated amount of waste brought in, obtained by summing the estimated amounts of waste brought in from the multiple facilities, falls within the total range of possible waste amounts, obtained by summing the ranges of possible waste amounts that can be brought in from the multiple facilities. If the estimated total amount of incoming materials falls within the range of the total amount of materials that can be received, the estimated total amount of incoming materials is distributed to the multiple facilities based on predetermined criteria, and a processing plan is determined for each facility. A waste treatment planning calculation device that performs a review process to revise the start-up and shutdown plan for at least one of the multiple facilities if the estimated total amount of waste to be brought in does not fall within the range of the total amount of waste that can be brought in.

2. The data acquisition device acquires the amount of waste to be accepted based on the waste acceptance request or waste treatment request when at least one of the multiple facilities receives a request for waste acceptance from other facilities due to an unplanned shutdown that does not conform to the start-up / shut-down plan, or when a request for waste treatment exceeds the permissible amount determined based on the estimated total amount of waste brought in. The aforementioned arithmetic unit, The start-up / shut-down plan for at least one of the operational facilities is modified so that the amount requested to be accepted is less than or equal to the upper limit of the total acceptable amount based on the modified total acceptable amount range obtained by summing the acceptable waste amounts ranges of the operational facilities among the multiple facilities. The waste treatment planning device according to claim 1, which modifies the allocated treatment plan for each operational facility using the modified start-up / shut-down plan.

3. The waste treatment planning calculator according to claim 2, wherein the calculator modifies the start-up and stop-down plan to increase the upper limit of the range of waste that can be brought in based on the original start-up and stop-down plan.

4. The aforementioned arithmetic unit, The start-up and shutdown plan for each processing unit is modified based on operational constraint data from at least one of the operational facilities to maximize the operating rate of the processing unit. The revised total waste transport capacity range is calculated using the waste transport capacity range based on the revised start-up / shut-down plan. The waste treatment planning device according to claim 2, wherein the operational constraint data includes an upper limit for the continuous operating period for each processing device, a lower limit for the continuous shutdown period for each processing device, and a periodic inspection plan for each processing device.

5. The waste treatment planning device according to claim 4, wherein the operational constraint data includes the current remaining amount of the storage pit in the facility for which the start-up and shutdown plan is modified and the waste treatment volume plan in the facility.

6. The aforementioned arithmetic unit, Based on the upper limit of the continuous operating period for each processing unit, the lower limit of the continuous shutdown period for each processing unit, and the periodic inspection plan for each processing unit, the startup and shutdown plan for each processing unit is determined so as to maximize the operating rate of the processing unit. A waste treatment planning device according to any one of claims 1 to 5, wherein in the aforementioned re-examination process, the operating rate of the processing device is reduced and the start-up / stop-down plan is re-determined.

7. A waste treatment planning calculation method that uses a computer to calculate a distribution plan for distributing the amount of waste to be treated among multiple facilities that treat waste, Each of the aforementioned facilities includes a storage pit for temporarily storing waste transported to the facility and a processing device for processing the waste. The aforementioned computer, Obtaining an estimated amount of waste brought in for each facility during the first unit period, a start-up / shutdown plan that defines the start-up period for processing waste and the stop-down period for stopping waste processing for each processing device during the first unit period, a processing load operating range that defines the range of processing volume for each processing device at each facility, and a storage volume operating range that defines the range of storage volume for each storage pit at each facility. Calculate the range of waste that can be brought in for each facility from the aforementioned start-up / shut-down plan, processing load operating range, and storage capacity operating range for each facility. To determine whether the total estimated waste volume, obtained by summing the estimated waste volume from the multiple facilities, falls within the total possible waste volume range, obtained by summing the possible waste volume ranges from the multiple facilities. If the estimated total amount of incoming materials falls within the range of the total amount of materials that can be received, the estimated total amount of incoming materials is distributed to the multiple facilities based on predetermined criteria to determine the processing plan for each facility, and A waste treatment plan calculation method, which includes performing a review process to revise the start-up and shutdown plan at at least one of the multiple facilities if the estimated total amount of waste to be brought in does not fall within the range of the total amount of waste that can be brought in.

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