JP7516117B2 - Driving support device, ash distribution support system - Google Patents

Description

The present invention relates to a boiler operation support device, an operation support method, and an ash distribution support system that can increase the added value of coal ash that is distributed to the market after being supplied from a boiler.

Coal ash (fly ash, clinker ash) generated in coal-fired boilers (hereinafter sometimes simply referred to as boilers) can be effectively used for cement, etc. In Patent Document 1, when the boiler load and coal operation schedule are input, a simulator calculation device uses a stored physical model to estimate the changes in the quantity and quality of coal ash at the coal ash supply site of the coal-fired boiler based on the relationship between coal type and boiler output. In addition, a boiler operation plan is formulated based on ash demand forecasts.

JP 2004-198017 A

However, the quality of coal ash (especially the unburned portion, etc.) is greatly affected not only by the type of coal and boiler load (output), but also by the boiler operation method. Furthermore, if the ash demand forecast is incorrect, coal ash cannot be distributed on the market at the specified price, and boiler owners cannot earn the profits they expected.

The present invention aims to provide an operation support device that can increase added value by performing operations to improve the quality of coal ash, distribute coal ash of the required quality and quantity in the market based on actual demand, and reduce boiler operating costs.

The operation support device of the present invention for achieving the above object is characterized by comprising: a demand information receiving unit that receives the expected demand for coal ash supplied from the boiler from an ash distribution support device; a boiler information receiving unit that receives boiler operation information and economic evaluation information from a boiler terminal; an operation calculation unit that calculates expected ash specifications including the amount, quality and unit price of coal ash that can be supplied by the boiler using the expected demand, operation information and economic evaluation information; an expected ash specification transmitting unit that transmits the expected ash specifications to the ash distribution support device; a purchased ash specification receiving unit that receives purchased ash specifications including the amount, quality and unit price of coal ash purchased by the customer from the ash distribution support device; an operation condition transmitting unit that calculates the boiler operation conditions using the purchased ash specifications, operation information and economic evaluation information and transmits the operating conditions to the boiler terminal; an actual ash specification receiving unit that receives actual ash specifications consisting of the quality and quantity of coal ash supplied from the boiler from the boiler terminal; and a delivery information transmitting unit that checks the actual ash specifications and transmits a coal ash delivery request to the boiler terminal.

The operation support device of the present invention can increase added value by performing operations that improve the quality of coal ash, and distribute coal ash of the required quality and quantity based on actual demand to the market, thereby reducing boiler operation costs.

Business model overview Business flow diagram system configuration diagram Device configuration diagram (driving support device) Device configuration diagram (ash circulation support device) Data processing overview Data processing flow chart Schematic diagram of the boiler

Below, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. Note that the present invention is not limited to this embodiment, and when there are multiple embodiments, the present invention also includes a configuration in which each embodiment is combined.

First, a business model related to coal ash distribution support according to this embodiment will be described with reference to Figures 1 and 2. Figure 1 is a schematic diagram of the business model according to this embodiment, and Figure 2 is a business flow diagram of the same.

The business model related to coal ash distribution support is based on the transmission and reception of information between the operation support device 200, boiler terminal 201, ash distribution support device 202, and customer terminal 203.

The operation support device 200 is a device that supports the operation of the coal-fired boiler 10. The boiler terminal 201 is a terminal that is installed next to the coal-fired boiler 10 and sets the operating conditions and acquires and transmits various data. The schematic configuration of the coal-fired boiler 10 is as shown in FIG. 8 and will be described later. The ash distribution support device 202 is a device that supports the market distribution of coal ash supplied by the coal-fired boiler 10. The customer terminal 203 is a terminal owned by a user who is considering purchasing coal ash. The operation support device 200 and the ash distribution support device 202 are operated by the same operator, and this operator receives sales (revenue) from the respective usage fees, etc.

In this embodiment, we focused on the content of unburned matter as the main component that determines the quality of coal ash. Unburned matter is a component that changes depending on the boiler operating method, and is usually controlled to a content below a certain amount, but by further reducing the content, the quality of the coal ash can be improved and it can be distributed on the market as fly ash, a high-added-value product. On the other hand, there are also factors that worsen as a trade-off when improving the unburned matter (such as the NOx value in exhaust gas), and the upper limit of the quality of coal ash and the upper limit of the supply amount are determined based on the total balance.

In this embodiment, the operation support device 200 has the ability to adjust the unburned fuel, i.e., the quality and supply amount of coal ash, and this ability is utilized to adjust the supply amount of coal ash at will according to market needs (or market price), thereby reducing the annual boiler operating costs.

Next, we will explain the flow of the business model using Figure 2. This figure shows the sending and receiving of information chronologically from top to bottom.

First, in step S1, the expected demand for coal ash is transmitted from the ash distribution support device 202 to the operation support device 200. The expected demand for coal ash includes an expected unit price, an expected required quality, and an expected demand amount. It may also include an expected time and an expected location of demand.

In step S2, boiler operation information and economic evaluation information are transmitted from the boiler terminal 201 to the operation support device 200. The operation information and economic evaluation index are information necessary for determining the boiler operation conditions described below, and are transmitted and updated relatively frequently (for example, every hour).

In step S3, the operation support device 200 calculates the expected ash specifications, including the amount, quality, and unit price of coal ash that can be supplied by the boiler, using the expected demand, operation information, and economic evaluation information. The calculated expected ash specifications are also transmitted from the operation support device 200 to the ash distribution support device 202. Here, sample images of the coal ash (taken in the past), detailed information on the quality (type, past test results, etc.), and the manufacturer's name may also be included.

In step S3', the expected ash specifications are displayed on the ash distribution support device 202 in a state where they can be viewed on multiple customer terminals 203. The displayed expected ash specifications are put up for auction in the form of an online auction within the range of the supplyable amount. The key point of this embodiment is that it is not necessary to bid on the entire supplyable amount here, and it is possible to know the supply amount required by the market (market needs) before starting operations. The product is not shipped immediately after the bid is won, but coal ash to be supplied in the future is bid on in advance. High-quality coal ash (fly ash) is expected to be used in large-scale construction projects for applications such as high-strength concrete, and this is due to the fact that there is a relatively long time between planning and actual use.

In steps S4 and S4', assuming that a specific customer has made a purchasing decision, the purchased ash specifications, including the amount, quality, and unit price of the coal ash to be purchased by the customer, are transmitted from the customer terminal 203 to the ash distribution support device 202. The purchased ash specifications are also transferred to the operation support device 200.

In step S5, the operation support device 200 calculates the boiler operating conditions using the purchased ash specifications, the operation information, and the economic evaluation information. In addition, the calculated boiler operating conditions are transmitted from the operation support device 200 to the boiler terminal 201.

The operation support device 200 will carry out operations that adjust the unburned content so that only the amount of coal ash that was awarded is supplied. In other words, if the amount of coal ash awarded is small or the unit price is low, it is possible to prioritize operations that do not prioritize unburned content (high unburned content), and it becomes possible to secure operating opportunities (periods) that prioritize other factors (for example, reducing ammonia consumption, as described below).

In step S5', the boiler is operated according to its operating conditions, and the actual ash specifications, consisting of the quality and quantity of the supplied coal ash, are measured. In step S6, the actual ash specifications are transmitted from the boiler terminal 201 to the operation support device 200.

In step S7, the operation support device 200 checks the actual ash specifications, and if the purchased ash specifications are met, it sends coal ash delivery request information to the boiler terminal 201.

In step S8, delivery request information is sent from the boiler terminal 201 to the customer terminal 203. In parallel, coal ash is delivered from the boiler ash storage area to a location specified by the customer.

Next, the system configuration diagram in Figure 3 will be described. The operation support device 200, the boiler terminal 201, the ash distribution support device 202, and the customer terminal 203 are each connected to the network 205. The operation support device 200 and the ash distribution support device 202 are combined to form the ash distribution support system 204.

Next, the device configuration diagrams of Figures 4 and 5 will be described. Figure 4 is a device configuration diagram of the driving support device 200. The driving support device 200 includes a calculation unit 210, a transmission/reception unit 211, a network IF unit 212, an input/output unit 213, and a storage unit 214.

The demand information receiving unit 220 receives the expected demand for coal ash supplied from the boiler from the ash distribution support device 202 (step S1 receiving side).

The boiler information receiving unit 221 receives boiler operation information and economic evaluation information from the boiler terminal 201 (step S2 receiving side).

The operation calculation unit 222 calculates the expected ash specifications, including the quantity, quality, and unit price of coal ash that can be supplied by the boiler, using the expected demand, operation information, and economic evaluation information.

The expected ash specification transmission unit 223 transmits the expected ash specification to the ash distribution support device 202 (step S3, sending side).

The purchased ash specification receiving unit 224 receives purchased ash specifications including the quantity, quality and unit price of the coal ash purchased by the customer from the ash distribution support device 202 (step S4 receiving side).

The operation calculation unit 222 also calculates the boiler's operating conditions using the purchased ash specifications, the latest operating information, and the economic evaluation information. The operating condition transmission unit 225 then transmits the operating conditions to the boiler terminal 201 (step S5, transmission side).

The actual ash specification receiving unit 226 receives actual ash specifications consisting of the quality and quantity of coal ash supplied from the boiler from the boiler terminal 201 (step S6 receiving side).

The delivery information transmission unit 227 confirms that the actual ash specifications meet the purchased ash specifications and transmits a coal ash delivery request to the boiler terminal 201 (step S7 transmission side). Note that if the actual ash specifications do not meet the purchased ash specifications, the deviation between the two specifications can be obtained, and this predicted deviation can be corrected by the operation calculation unit 222 to calculate new operating conditions. Of the above configuration, the operation calculation unit 222 is included in the calculation unit 210, and the others are included in the transmission/reception unit 211.

Figure 5 is a diagram of the device configuration of the ash circulation support device 202. Explanations of the device configuration of the ash circulation support device 202 that are common to Figure 4 will be omitted, and only the differences will be explained.

The demand information transmission unit 240 transmits the expected demand to the driving support device 200 (step S1 transmission side). The expected ash specification reception unit 241 receives the expected ash specification from the driving support device 200 (step S3 reception side). The ash specification display unit 242 displays the expected ash specification so that it can be viewed from multiple customer terminals 203 (step S3'). The purchasing information reception unit 243 receives the purchased ash specification from the customer terminal 203 (step S4'). The purchased ash specification transmission unit 244 transmits the purchased ash specification to the driving support device 200 (step S4 transmission side). All of the above configurations are included in the transmission/reception unit 231.

Next, the calculation process in the driving calculation unit 222 of the driving assistance device 200 will be described using the data processing overview diagram in Figure 6. Figure 6 shows the flow of inputting input parameters (Input) into the model M and obtaining a process value (Output).

First, the calculation process for calculating the expected ash specifications in step S3 will be described. The input parameters include expected demand consisting of the expected unit price of coal ash, the expected required quality, and the expected demand amount. These are information received by the demand information receiving unit 220 in step S1. For example, the expected unit price is the selling price of coal ash (yen/t), the expected required quality is the content ratio (%) of unburned matter in the coal ash, and the expected demand amount is the total demand amount of coal multiplied by 1 (t) for a specified period.

The input parameters further include economic evaluation information consisting of the fuel unit price and the unit prices of auxiliary materials and power. These are information received by the boiler information receiving unit 221 in step S2. For example, the fuel unit price is the purchase price (yen/t) of coal, the unit price of auxiliary materials is the purchase price (yen/kg) of ammonia used in a denitration device 43 for treating nitrogen oxides (NOx) in exhaust gas, which will be described later, and the unit price of power is the in-house electricity cost (yen/kWh) for the motor current of the pulverizers (mills) 31 to 35, which will be described later.

Furthermore, the input parameters also include operational information consisting of data for the control end. The control end refers to the various valves and dampers provided in the boiler, the angle adjustment units of burners 21 to 25, etc., and the data for the control end refers to their opening degree (0 to 100%) and angle (0 to 180°). The data for the control end is changed as described below and an iterative calculation is performed, but since there are restrictions on the amount of change (speed of change), the current setting value of the data for the control end is input as the initial value.

These input parameters are input to model M. Model M may be either a physical model based on physical formulas or a statistical model based on machine learning. In addition, although FIG. 6 shows one model M, multiple models M may be provided so that a pattern of process values can be output by changing conditions.

The process value obtained as the output of model M includes the available supply amount of coal ash. This available supply amount is calculated after satisfying the condition of the unburned content ratio in the expected required quality. In addition, the process value includes the total cost (economic efficiency) consisting of the profit from selling coal ash, fuel cost, and the cost of auxiliary materials and power. The profit from selling coal ash is the amount obtained by subtracting the required cost α (coal ash transportation cost, etc.) from the sales income obtained by multiplying the available supply amount by the expected unit price. The fuel cost is the result of multiplying the fuel consumed by the fuel unit price. The cost of auxiliary materials and power is the result of multiplying the amount of auxiliary materials consumed by the unit price, and the power cost is the result of multiplying the amount of electricity consumed by the electricity cost.

Note that reducing the amount of unburned fuel in coal ash results in a trade-off in which the NOx value in the exhaust gas increases (increasing the amount of ammonia consumed as an auxiliary material for processing it) and the motor current of the pulverizers (mills) 31 to 35 tends to increase. In other words, there is a trade-off between the profit from selling coal ash and the costs of auxiliary materials and power, and in this embodiment, it is possible to achieve a balance between the total economic impact of these.

Furthermore, the process values also include other operational evaluation indexes. Examples of other operational evaluation indexes include NOx emissions to take environmental friendliness into consideration and the surface temperature of the heat transfer tube to take safety into consideration.

In order to achieve a well-balanced optimization from multiple perspectives, including not only economic efficiency but also environmental friendliness and safety, iterative calculations are performed while changing the input parameter data for the control end in various ways. The process values (including the supplyable amount of coal ash) for the optimal operating conditions (combination of control end data) obtained as a result are output. The supplyable amount of coal ash is constrained so that it remains below the expected demand. The expected ash specifications are calculated by combining the finally output supplyable amount of coal ash with the input parameters of the expected unit price of coal ash and the expected required quality (expected quality).

Next, we will explain the calculation process for calculating the boiler operating conditions in step S5.

The input parameters (estimated demand) for coal ash are the estimated unit price, estimated required quality, and estimated demand volume, which are the unit price, quality, and purchase volume of the purchased ash specifications, respectively.

Furthermore, the economic evaluation information and operation information of the input parameters are input with the latest information as of step S5. These input parameters are input into model M to obtain the process values. Then, in order to optimize the total indicators such as economic efficiency, environmental friendliness, and safety evaluated from the process values in a well-balanced manner, iterative calculations are performed while changing the control end data of the input parameters in various ways. At that time, a constraint is set so that the supplyable amount of coal ash is equal to the purchase amount of the purchased ash specification. The optimal operating conditions (combination of control end data) obtained as a result are calculated as the boiler operating conditions.

Next, the data processing flow diagram in FIG. 7 will be described. This diagram shows the flow from step S4 to step S7. Details of each step are as described above and will be omitted here.

Next, the schematic configuration diagram of the coal-fired boiler in Figure 8 will be described. The coal-fired boiler 10 of this embodiment is a coal-fired (pulverized coal-fired) boiler that uses pulverized coal made by pulverizing coal (carbon-containing solid fuel) as pulverized fuel, burns this pulverized fuel with a burner, and exchanges the heat generated by this combustion with feed water or steam to generate superheated steam.

In this embodiment, as shown in FIG. 8, the coal-fired boiler 10 has a furnace 11, a combustion device 12, and a combustion gas passage 13. The furnace 11 has a hollow rectangular cylinder shape and is installed vertically. The furnace wall 101 that constitutes the furnace 11 is composed of multiple heat transfer tubes and fins that connect them, and exchanges heat generated by the combustion of pulverized fuel with water and steam flowing inside the heat transfer tubes to suppress the temperature rise of the furnace wall.

The combustion device 12 is provided on the lower side of the furnace wall that constitutes the furnace 11. In this embodiment, the combustion device 12 has multiple burners (e.g., 21-25) attached to the furnace wall. For example, the burners 21-25 are arranged at equal intervals along the circumferential direction of the furnace 11 as one set, and are arranged in multiple stages (e.g., five stages in FIG. 1) along the vertical direction. However, the shape of the furnace, the number of burners in one stage, the number of stages, the arrangement, etc. are not limited to this embodiment.

The burners 21-25 are connected to multiple pulverizers (mills) 31-35 via pulverized coal supply pipes 26-30. The pulverizers 31-35 are configured, for example, such that a pulverizer table (not shown) is supported in the pulverizer housing so that it can be driven and rotated, and multiple pulverizer rollers (not shown) are supported above the pulverizer table so that they can rotate in conjunction with the rotation of the pulverizer table. When coal is fed between the multiple pulverizer rollers and the pulverizer table, it is pulverized and transported by a carrier gas (primary air, oxidizing gas) to a classifier (not shown) in the pulverizer housing, and the pulverized fuel classified to a predetermined particle size range can be supplied from the pulverized coal supply pipes 26-30 to the combustion burners 21-25.

Furnace 11 is provided with a wind box 36 at the mounting positions of burners 21 to 25, and one end of an air duct (airway) 37 is connected to this wind box 36. Air duct 37 is provided with a forced draft fan (FDF: Forced Draft Fan) 38 at the other end.
1, the combustion gas passage 13 is connected to the vertical upper part of the furnace 11. The combustion gas passage 13 is provided with superheaters 102 to 104, reheaters 105 and 106, and a coal economizer 107 as heat exchangers for recovering heat from the combustion gas, and heat is exchanged between the combustion gas generated in the furnace 11 and the feed water or steam flowing inside each heat exchanger.

As shown in FIG. 1, the combustion gas passage 13 is connected downstream to a flue 14 through which the combustion gas that has undergone heat exchange is discharged. An air heater (air preheater) 42 is provided between the flue 14 and the air duct 37, and heat is exchanged between the air flowing through the air duct 37 and the combustion gas flowing through the flue 14, thereby raising the temperature of the combustion air supplied to the burners 21 to 25.

The flue 14 is provided with a denitration device 43 at a position upstream of the air heater 42. The denitration device 43 supplies a reducing agent, such as ammonia or urea water, that has the effect of reducing nitrogen oxides into the flue 13, and promotes the reaction between the nitrogen oxides in the combustion gas to which the reducing agent has been supplied and the reducing agent through the catalytic action of a denitration catalyst installed in the denitration device 43, thereby removing and reducing the nitrogen oxides in the combustion gas.

The gas duct 41 connected to the flue 14 is provided with a dust collector 44 such as an electric dust collector, an induced draft fan (IDF) 45, a desulfurization device 46, etc., downstream of the air heater 42, and a chimney 50 at the downstream end.

On the other hand, when the multiple pulverizers (mills) 31-35 are driven, the generated pulverized fuel is supplied to the burners 21-25 through the pulverized coal supply pipe 2630 together with the conveying gas (primary air, oxidizing gas). In addition, the exhaust gas discharged from the flue 14 is heat exchanged with the air heater 42, and the heated combustion air (secondary air, oxidizing gas) is supplied to the burners 21-25 from the air duct 37 through the wind box 36. The burners 21-25 blow a pulverized fuel mixture, which is a mixture of pulverized fuel and conveying gas, into the furnace 11 and also blow combustion air into the furnace 11, at which time the pulverized fuel mixture is ignited to form a flame. A flame is generated at the bottom of the furnace 11, and high-temperature combustion gas rises inside the furnace 11 and is discharged into the combustion gas passage 13. In this embodiment, air is used as the oxidizing gas. It can be made to have a higher or lower oxygen content than air, and can be used by optimizing it with the fuel flow rate.

Then, as shown in FIG. 8, the combustion gas is heat exchanged in the second superheater 103, the third superheater 104, the first superheater 102 (hereinafter sometimes simply referred to as the superheater), the second reheater 106, the first reheater 105 (hereinafter sometimes simply referred to as the reheater), and the economizer 107 arranged in the combustion gas passage 13, and then the nitrogen oxides are reduced and removed by the denitrification device 43, the particulate matter is removed by the dust collector 44, and the sulfur oxides are removed by the desulfurization device 46, and then the combustion gas is discharged into the atmosphere from the chimney 50. Note that the heat exchangers do not necessarily have to be arranged in the order described above with respect to the combustion gas flow.

Finally, the coal ash generated in the furnace 11 (clinker ash) is discharged from the furnace 11 through an outlet (not shown) at the bottom and transported to a storage area. The fly ash from the coal ash is mainly collected by a dust collector 44, classified as necessary, and then transported to a storage area.

In the above-described embodiment, the boiler of the present invention is a coal-fired boiler, but the boiler may be one that burns a mixture of solid fuels such as biomass fuel, PC (petroleum coke) fuel generated during oil refining, and oil residue.

The configuration and effects of this embodiment can be summarized as follows:

1) A boiler operation support device 200, comprising a demand information receiving unit 220 that receives the expected demand for coal ash supplied from the boiler from an ash distribution support device 202, a boiler information receiving unit 221 that receives boiler operation information and economic evaluation information from a boiler terminal 201, an operation calculation unit 222 that calculates expected ash specifications including the amount, quality and unit price of coal ash that can be supplied by the boiler using the expected demand, operation information and economic evaluation information, an expected ash specification transmitting unit 223 that transmits the expected ash specifications to the ash distribution support device, and a purchased ash specification transmitting unit 224 that transmits the expected ash specifications to the ash distribution support device, and a purchased ash specification transmitting unit 225 that transmits the expected ash specifications to the ash distribution support device. The operation support device 200 is characterized by being composed of a purchased ash specification receiving unit 224 that receives specifications from the ash distribution support device 202, an operation calculation unit 222 that uses the purchased ash specifications, operation information, and economic evaluation information to calculate the boiler operation conditions, and an operation condition sending unit 225 that sends the operation conditions to the boiler terminal 201, an actual ash specification receiving unit 226 that receives actual ash specifications consisting of the quality and quantity of coal ash supplied from the boiler from the boiler terminal 201, and a delivery information sending unit 227 that checks the actual ash specifications and sends a coal ash delivery request to the boiler terminal 201.

The above-mentioned operation support device 200 can increase added value by performing operations to improve the quality of coal ash, and distribute coal ash of the required quality and quantity based on actual demand in the market, thereby reducing boiler operation costs.

2) An ash distribution support system 204 consisting of the driving support device 200 and ash distribution support device 202 described in 1), characterized in that the ash distribution support device 202 is composed of a demand information transmission unit 240 that transmits expected demand to the driving support device 200, an expected ash specification receiving unit 241 that receives the expected ash specification from the driving support device 200, an ash specification display unit 242 that displays the expected ash specification so that it can be viewed from the customer terminal 203, a purchasing information receiving unit 243 that receives the purchased ash specification from the customer terminal 203, and a purchased ash specification transmitting unit 244 that transmits the purchased ash specification to the driving support device 200.

According to the above-mentioned ash distribution support system 204, the expected ash specifications can be displayed so that they can be viewed on the terminals of multiple potential customers, making it possible to comprehensively and accurately grasp market needs and increase the added value of coal ash. It is also possible to automate transactions with potential customers (or simplify procedures and reduce time). Furthermore, information about coal ash that was previously unknown to potential customers (manufacturer name, type) becomes clear, expanding the possibility of purchase (purchase options).

3) A driving assistance method for achieving the functions of the driving assistance device 200 described in 1).

The present invention can be widely applied to support boiler operation, ash circulation, etc.

200 Operation support device 201 Boiler terminal 202 Ash distribution support device 203 Customer terminal 204 Ash distribution support system 220 Demand information receiving unit 221 Boiler information receiving unit 222 Operation calculation unit 223 Estimated ash specification transmitting unit 224 Purchased ash specification receiving unit 225 Operation condition transmitting unit 226 Actual ash specification receiving unit 227 Delivery information transmitting unit 240 Demand information transmitting unit 241 Estimated ash specification receiving unit 242 Ash specification display unit 243 Purchase information receiving unit 244 Purchased ash specification transmitting unit 10 Coal-fired boiler (boiler)
21, 22, 23, 24, 25 Burner 31, 32, 33, 34, 35 Crusher (mill)
43 Denitrification equipment

Claims (3)

A boiler operation support device, comprising:
a demand information receiving unit that receives an estimated demand for coal ash supplied from the boiler from the ash distribution support device;
a boiler information receiving unit that receives boiler operation information and economic evaluation information from a boiler terminal;
an operation calculation unit that calculates an estimated ash specification including an amount, a quality, and a unit price of coal ash that can be supplied by a boiler using the estimated demand, the operation information, and the economic evaluation information;
An expected ash specification transmission unit that transmits the expected ash specification to an ash circulation support device;
a purchase ash specification receiving unit that receives a purchase ash specification including a quantity, a quality, and a unit price of the coal ash purchased by the customer from the ash distribution support device;
The operation calculation unit calculates the operating conditions of the boiler using the purchased ash specifications, the operation information, and the economic evaluation information,
an operating condition transmission unit that transmits the operating conditions to a boiler terminal;
an actual ash specification receiving unit that receives actual ash specifications, including the quality and quantity of coal ash supplied from the boiler, from the boiler terminal;
a delivery information transmission unit that confirms the actual ash specifications and transmits a delivery request for the coal ash to a boiler terminal;
A driving assistance device comprising: An ash circulation support system comprising the driving support device and the ash circulation support device according to claim 1,
The ash flow support device includes:
A demand information transmission unit that transmits the expected demand to the driving support device;
An expected ash specification receiving unit that receives the expected ash specification from the driving assistance device;
A ash specification display unit that displays the assumed ash specification so that it can be viewed from a customer terminal;
A purchase information receiving unit that receives the purchased ash specifications from a customer terminal;
A purchased ash specification transmission unit that transmits the purchased ash specification to the driving support device;
An ash distribution support system comprising: A boiler operation support method, comprising:
receiving an estimated demand for coal ash supplied from the boiler from an ash distribution support device;
a boiler step of receiving boiler operation information and economic evaluation information from a boiler terminal;
Calculating an expected ash specification including an amount, a quality, and a unit price of coal ash that can be supplied by a boiler using the expected demand, the operation information, and the economic evaluation information;
Sending the expected ash specifications to an ash distribution support device;
receiving from the ash distribution support device a purchased ash specification including a quantity, a quality, and a unit price of coal ash purchased by a customer;
Calculating operating conditions of a boiler using the purchased ash specifications, the operating information, and the economic evaluation information;
Transmitting the operating conditions to a boiler terminal;
receiving actual ash specifications, including the quality and quantity of coal ash supplied from the boiler, from a boiler terminal;
confirming the actual ash specifications and transmitting a coal ash delivery request to a boiler terminal;
A driving assistance method comprising the steps of:

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