Coal Utilization Schedule Management System

Abstract

To provide a coal utilization schedule management method and a system allowing automization of acquisition and management of coal properties and allowing efficiency to be improved as well as risk of spontaneous fire to be reduced.SOLUTION: A coal utilization schedule management system is provided with: a transport device 10 transporting coal C to storage facilities 40; a coal analyzer 20 acquiring property data 20a on the coal C transported with the transport device 10; and a management personal computer 30 which estimates a coal type based on the property data 20a acquired with the coal analyzer 20, obtains a storage possible period of the coal C from the coal type, the property data 20a, and a storage-start date, determines whether or not transportation for heat radiation or consumption of the coal C is carried out before the storage possible date elapses to update the property data 20a and the storage possible period if it is determined that the transportation of the coal C is carried out, and determines whether or not one of the storage possible period and the updated storage possible period reaches a set date before a due date of one of them to dispatch alarm when it is determined that the one has reached the due date.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a coal operation schedule Management system and the like.

Background Art

[0002] Generally, coal is stored in a coal storage facility where it is piled up in the open air or in a coal storage facility using a silo. However, spontaneous combustion occurs when the storage period becomes long in any coal storage facility.

[0003] As a countermeasure against spontaneous combustion in the coal storage facility, for example, the properties of coal are confirmed by manual analysis from the collected samples, the coal type is estimated to determine the storage period, and transportation for heat dissipation or transportation for consumption (removal) is carried out before the storage period elapses.

[0004] Incidentally, transportation for heat dissipation means moving the coal C in the pile or silo to another pile or silo. However, the coal taken out from the pile or silo may be put back into the same pile or silo.

[0005] Conventionally, the information after manual analysis has been managed by writing on paper or manually inputting it into a personal computer.

[0006] In addition, the temperature of the coal in the pile or silo is generally obtained with a thermometer to detect an increase in the coal temperature and prevent spontaneous combustion.

[0007] In addition, as an example showing the general technical level related to preventing spontaneous combustion in the coal storage facility, there is, for example, Patent Document 1.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0009] However, as described above, it takes time and effort to confirm the properties of coal by manual analysis, and improvement has been desired.

[0010] Moreover, in the management of information on handwritten paper or manual input management on a personal computer after manual analysis, the efficiency is poor, and there has been an increasing demand for automation.

[0011] Also, even if a thermometer is installed inside a coal pile or a silo, the temperature of the coal at the installation location does not necessarily rise, and there is a risk of overlooking the temperature rise.

[0012] The present invention has been made in view of the above conventional problems, and can automate the acquisition and management of the properties of coal, and can improve efficiency and reduce the risk of spontaneous combustion, and a coal operation schedule Management system is to be provided.

Means for Solving the Problems

[0013] The present invention stores a conveying device for conveying coal to a coal facility, a coal analyzer for acquiring property data of the coal conveyed by the conveying device, estimating the coal type based on the property data acquired by the coal analyzer, obtaining the storage period of the coal from the coal type, property data, and storage start date, determining whether conveyance for heat dissipation or consumption of the coal has been carried out before the expiration of the storage period, updating the property data and the storage period when it is determined that the conveyance of the coal has been carried out, determining whether a set date before the date when either the storage period or the updated storage period expires has been reached, and a management PC that issues an alarm when it is determined that the set date has been reached relates to a coal operation schedule management system including.

[0014] In the coal operation schedule management system, the property data may include the calorific value [kcal / kg], moisture content [%], carbon content [%], nitrogen content [%], and sulfur content [%] of the coal.

Advantages of the Invention

[0015] The coal operation schedule of the present invention Management system According to this, it is possible to automate the acquisition and management of the properties of coal, and it is possible to achieve excellent effects such as improving efficiency and reducing the risk of spontaneous combustion.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0018] FIG. 1 and FIG. 2 are embodiments of the coal operation schedule of the present invention. Management system of the present invention.

[0019] The coal operation schedule management system of this embodiment includes, as shown in FIG. 1, a conveying device 10, a coal analyzer 20, and a management personal computer 30.

[0020] The conveying device 10 is a belt conveyor that conveys coal C to a coal storage facility 40 such as a coal pile 40a or a silo 40b. In addition, the supply of coal C to the conveying device 10 is carried out by a reclaimer (not shown).

[0021] The coal analysis device 20 is configured to acquire the property data 20a of the coal C conveyed by the conveying device 10. As the coal analysis device 20, for example, a non-contact device can be adopted, which irradiates a pulsed laser on a small spot with a diameter of about 10 to 100 micrometers, decomposes a small amount of substance from the surface of the target (coal C) to form a local plasma, and collects the spectrum of the light emitted from the plasma with a spectroscope and analyzes it with a spectrometer. The property data 20a of the coal C obtained by the coal analysis device 20 includes calorific value [kcal / kg], moisture [%], carbon [%], nitrogen [%], sulfur [%], etc.

[0022] The management personal computer 30 estimates the coal type based on the property data 20a obtained by the coal analysis device 20, calculates the storage period of the coal C from the coal type, property data 20a, and storage start date, determines whether the conveyance for heat dissipation or consumption of the coal C has been carried out before the expiration of the storage period, updates the property data 20a and the storage period when it is determined that the conveyance of the coal C has been carried out, determines whether the set date before the date when either the storage period or the updated storage period expires has been reached, and issues an alarm when it is determined that the set date has been reached. The standard of the storage period is about two weeks to one and a half months depending on the coal type.

[0023] In addition, a weighing instrument 50 for measuring the weight W of the coal C conveyed by the conveying device 10 and the drive motor 10a of the conveying device are connected to a control device 60. The integrated measurement value X is obtained by the control device 60 based on the weight W and the rotation speed R of the drive motor 10a, and the integrated measurement value X is transmitted to the management personal computer 30 as conveyance operation information.

[0024] Also, as shown in FIG. 2, the coal operation schedule management method of this embodiment is configured to perform a property data acquisition step, a coal type estimation step, a storage period calculation step, a conveyance confirmation step, an update step, a deadline confirmation step, an alarm step, and a conveyance execution step.

[0025] The property data acquisition step is a step of acquiring the property data 20a of the coal C during transportation to the coal storage facility 40.

[0026] The coal type estimation step is a step of estimating the coal type based on the property data 20a acquired in the property data acquisition step.

[0027] The storage period calculation step is a step of obtaining the storage period of the coal C from the coal type estimated in the coal type estimation step, the property data 20a, and the storage start date.

[0028] The transportation confirmation step is a step of determining whether transportation for heat dissipation or consumption of the coal C has been carried out before the expiration of the storage period obtained in the storage period calculation step.

[0029] The update step is a step of updating the property data 20a and the storage period when it is determined in the transportation confirmation step that the transportation of the coal C has been carried out.

[0030] The deadline confirmation step is a step of determining whether a set date before the date when either the storage period obtained in the storage period calculation step or the storage period updated in the update step has elapsed has been reached.

[0031] The alarm step is a step of issuing an alarm when it is determined in the deadline confirmation step that the set date has been reached.

[0032] The transportation execution step is a step of performing transportation for heat dissipation or consumption in response to the alarm issued in the alarm step.

[0033] Next, the operation of the above embodiment will be described.

[0034] First, when the coal C is transported to the coal storage facility 40 such as the coal pile 40a or the silo 40b by the transport device 10, the property data 20a of the coal C during transportation is acquired by the coal analyzer 20 (see the property data acquisition step in FIG. 2).

[0035] Here, the weight W of the coal C conveyed by the conveying device 10 is measured by the weighing instrument 50, and an integrated measurement value X is obtained in the control device 60 based on the weight W measured by the weighing instrument 50 and the rotation speed R of the drive motor 10a of the conveying device. The integrated measurement value X is transmitted to the management personal computer 30 as conveying operation information, and in the management personal computer 30, the amount of coal C stored in the coal storage 40a and the silo 40b of the coal storage facility 40 and the date of conveyance are recorded and managed.

[0036] In the management personal computer 30, the coal type is estimated based on the property data 20a acquired by the coal analyzer 20 (see the coal type estimation step in FIG. 2).

[0037] When the coal type is estimated based on the property data 20a, the coal type, the property data 20a, and the storage period of the coal C from the start date of storage are obtained in the management personal computer 30 (see the storage period calculation step in FIG. 2).

[0038] After that, it is determined whether or not conveyance for heat dissipation or consumption of the coal C has been carried out before the expiration of the storage period (see the conveyance confirmation step in FIG. 2). This is because, for the operation of the coal storage facility 40, conveyance for heat dissipation or consumption of the coal C cannot always be carried out at the desired timing as scheduled, and early conveyance may be carried out.

[0039] When it is determined that the conveyance of the coal C has been carried out, the property data 20a and the storage period are updated (see the update step in FIG. 2).

[0040] Subsequently, it is determined whether or not the set date before the date when either the storage period or the updated storage period has elapsed has been reached (see the deadline confirmation step in FIG. 2).

[0041] When it is determined that the set date has been reached, an alarm is issued (see the alarm step in FIG. 2). The alarm is displayed on the screen of the management personal computer 30, and a warning sound is emitted from the speaker of the management personal computer 30 to alert the operator.

[0042] When the alarm is issued, conveyance for heat dissipation or consumption is carried out in response to the alarm (see the conveyance execution step in FIG. 2). The conveyance for heat dissipation or consumption is performed manually by an operator on the equipment, or automatically by a control signal output from the management personal computer 30.

[0043] In the case of this embodiment, unlike the conventional method of manually analyzing the properties of coal C, it does not take much time and effort.

[0044] Moreover, management of the information after manual analysis on handwritten paper or manual input management on a personal computer becomes unnecessary, resulting in high efficiency and enabling automation.

[0045] Also, unlike detecting the temperature rise of coal C with a thermometer installed inside the coal pile 40a or the silo 40b, it is possible to avoid overlooking the temperature rise.

[0046] Furthermore, in the process of continuous operation, by performing parameter feedback, it is possible to clarify how much the heat generation tendency and the storable period of each coal type of coal C differ from the assumed values and the actual values. If these are accumulated as data, it is possible to improve the prediction accuracy.

[0047] In this way, it is possible to automate the acquisition and management of the properties of coal C, improving efficiency and reducing the risk of spontaneous combustion.

[0048] And in the case of this embodiment, the property data 20a of coal C acquired by the coal analyzer 20 includes calorific value [kcal / kg], moisture [%], carbon [%], nitrogen [%], and sulfur [%]. With this configuration, it is effective for estimating the coal type of coal C.

[0049] Incidentally, the coal operation schedule of the present invention Management system is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the gist of the present invention.

Explanation of Reference Numerals

[0050] 10 Conveyor device 10a Driving motor 20 Coal analyzer 20a Property data 30 Management personal computer 40 Coal storage facility 40a Coal pile 40b Silo 50 Weighing instrument 60 Control device C Coal R Rotation speed W Weight X Integrated measurement value

Claims

1. A conveying device for conveying coal to a coal storage facility, a coal analyzer for acquiring property data of the coal conveyed by the conveying device, estimating the coal type based on the property data acquired by the coal analyzer, obtaining the storage period of the coal from the coal type, property data, and storage start date, determining whether conveyance for heat dissipation or consumption of the coal has been carried out before the expiration of the storage period, updating the property data and storage period when it is determined that the conveyance of the coal has been carried out, determining whether the set date before the date when either the storage period or the updated storage period expires has been reached, and a management PC that issues an alarm when it is determined that the set date has been reached A coal operation schedule management system comprising the same.

2. The coal operation schedule management system according to claim 1, wherein the property data includes calorific value [kcal / kg], moisture [%], carbon [%], nitrogen [%], and sulfur [%] of the coal.

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