Coal-fired catalyst adding control system and method based on water in coal

Abstract

The invention relates to the technical field of catalyst adding, and particularly discloses a coal-fired catalyst adding control system and method based on water in coal. The input end of the flow adjusting assembly is connected with the catalyst adding assembly, and the flow adjusting assembly is used for controlling the catalyst adding amount of the catalyst adding assembly; the input end of the spraying control assembly is connected with the flow adjusting assembly, and the spraying control assembly is used for spraying the catalyst in the flow adjusting assembly to the surface of the coal; the detection assembly is arranged on the side close to the coal and used for collecting the characteristic spectrum data of the coal and controlling the flow adjusting assembly according to the characteristic spectrum data. The coal catalyst adding amount is adjusted in real time by collecting the characteristic spectrum data of the coal, the coal combustion efficiency can be effectively improved, and the coal cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of catalyst addition, and more specifically, to a coal-fired catalyst addition control system and method based on the moisture content in coal. Background Art

[0002] Coal not only accounts for a large proportion of the world's energy consumption structure, but also plays a vital role in the economic development of the world. With the development of the economy, its consumption is constantly increasing, while the storage of natural coal is very limited. In actual production applications, there is still a common problem of low utilization of coal, especially the coal used in existing power plants, which has no other catalyst substances added. The energy generated by coal is small, and the small energy means small power generation, low utilization rate, and serious waste, resulting in very tight resources.

[0003] Therefore, effectively and reasonably utilizing existing resources and improving the thermal efficiency of coal have become the focus of research. To this end, people usually improve the coal burning problem from two aspects. On the one hand, physical improvements are made, mainly to improve the coal combustion equipment. On the other hand, chemical improvements are made, adding certain catalysts during coal combustion to achieve the purpose of flame retardancy through the catalyst, so that the coal burns completely and improves the thermal efficiency. The method of adding catalysts used in the prior art is manual addition, which not only consumes a lot of manpower, but also has defects such as inaccurate addition amount and untimely addition. Summary of the invention

[0004] The present invention provides a coal-fired catalyst addition control system and method based on the moisture in coal, which is used to solve the problem of low efficiency of coal catalyst addition in the prior art, including:

[0005] Catalyst addition assembly;

[0006] A flow regulating component, the input end of which is connected to the catalyst adding component and is used to control the amount of catalyst added to the catalyst adding component;

[0007] A spray control component, the input end of which is connected to the flow regulating component, and is used to spray the catalyst in the flow regulating component onto the surface of the coal;

[0008] The detection component is arranged at a side close to the coal and is used to collect characteristic spectrum data of the coal and control the flow regulating component according to the characteristic spectrum data.

[0009] Furthermore, the catalyst adding assembly comprises:

[0010] Add medicine box;

[0011] A dosing pipeline, one end of which is connected to the dosing box, and the other end of which is connected to the flow regulating component, and a first solenoid valve is provided on the dosing pipeline;

[0012] Dilution box;

[0013] A dilution pipeline has one end connected to the dilution box and the other end connected to the flow regulating component. A second solenoid valve is arranged on the dilution pipeline.

[0014] Furthermore, the flow regulating component comprises:

[0015] A catalyst flow meter connected to the dosing pipeline;

[0016] A third solenoid valve is arranged on a side of the dosing pipeline close to the catalyst flow meter;

[0017] A diluent flow meter, connected to the dilution pipeline;

[0018] The fourth solenoid valve is arranged on the dilution pipeline at a side close to the dilution liquid flow meter.

[0019] Furthermore, the spray control assembly comprises:

[0020] A catalyst inlet pipeline, one end of which is connected to the catalyst flow meter and the other end of which is connected to a mixing spraying device;

[0021] The diluent inlet pipeline has one end connected to the diluent flow meter and the other end connected to the mixing spraying device.

[0022] Furthermore, the detection component comprises:

[0023] A coal conveying platform, arranged in the spraying direction of the mixing spraying device;

[0024] The detection device is arranged on the coal conveying platform and is used for collecting characteristic spectrum data of coal and controlling the flow regulating component according to the characteristic spectrum data.

[0025] In order to achieve the above object, the present invention also provides a control method of a coal-fired catalyst addition control system based on moisture in coal, which is applied to the above-mentioned coal-fired catalyst addition control system based on moisture in coal, and the method comprises:

[0026] Acquire characteristic spectrum data of the coal to be tested, and determine moisture data in the coal according to the characteristic spectrum data of the coal to be tested, wherein the moisture data in the coal specifically includes moisture content, pH value and impurity content of the coal to be tested;

[0027] The moisture characteristic data is determined according to the moisture data in the coal, the combustion efficiency coefficient is determined according to the moisture characteristic data of the tested coal, and the amount of catalyst added to the tested coal is determined according to the combustion efficiency coefficient.

[0028] Further, the determining of the moisture data in the coal according to the characteristic spectrum data of the coal to be tested includes:

[0029] Acquire historical coal characteristic spectrum data and corresponding coal moisture data, and pre-process the historical coal characteristic spectrum data and corresponding coal moisture data;

[0030] A training sample set is established based on the pre-processed historical coal characteristic spectrum data and the corresponding coal moisture data, and an initial coal moisture recognition model is established based on the training sample set;

[0031] The initial coal moisture recognition model is trained according to the training sample set to obtain a trained coal moisture recognition model;

[0032] The characteristic spectrum data of the coal to be tested is input into the trained coal moisture identification model to obtain the corresponding coal moisture data.

[0033] Further, determining moisture characteristic data according to the moisture data in coal includes:

[0034] Obtaining a preset standard pH value, calculating a difference between the preset standard pH value and the pH value of the coal to be tested, and normalizing the difference between the preset standard pH value and the pH value of the coal to be tested to obtain pH value characteristic data;

[0035] Normalizing the moisture content and impurity parameters of the coal to be tested respectively to obtain moisture content characteristic data and impurity characteristic data;

[0036] Determine a first length and a second length according to the moisture content characteristic data and the impurity characteristic data, determine a third length according to the pH value characteristic data, construct a rhombus according to the first length and the second length, and use the third length as the height of the rhombus to construct a triangular pyramid;

[0037] Calculate the area value of the triangular pyramid and obtain the moisture characteristic data.

[0038] Furthermore, the combustion efficiency coefficient is determined according to the moisture characteristic data of the coal to be tested, including:

[0039] Obtain historical coal moisture characteristic data, and establish a combustion efficiency change curve based on the historical coal moisture characteristic data and the corresponding boiler combustion efficiency;

[0040] Obtaining a preset segmentation segment, dividing the combustion efficiency change curve into a number of data segments according to the preset segmentation segment, and calculating the correlation coefficient between the coal moisture characteristic data and the boiler combustion efficiency in each data segment;

[0041] Obtaining the correlation coefficient corresponding to the data segment where the moisture characteristic data of the tested coal is located, calculating the ratio of the correlation coefficient corresponding to the data segment where the moisture characteristic data of the tested coal is located to a preset allowable correlation coefficient, and obtaining the combustion efficiency correction coefficient;

[0042] Multiply the moisture characteristic data by the combustion efficiency correction factor to obtain the combustion efficiency coefficient.

[0043] Furthermore, the step of determining the amount of catalyst added to the tested coal according to the combustion efficiency coefficient includes:

[0044] Obtaining a preset standard combustion efficiency coefficient, calculating a difference between a current combustion efficiency coefficient and the preset standard combustion efficiency coefficient, and determining whether the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a first preset threshold;

[0045] If the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a first preset threshold value, the preset first addition amount is set as the catalyst addition amount of the coal to be tested;

[0046] If the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is less than or equal to the first preset threshold, determining whether the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a second preset threshold;

[0047] If the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a second preset threshold, the preset second addition amount is set as the catalyst addition amount of the coal to be tested;

[0048] If the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is less than or equal to the second preset threshold value, the preset third addition amount is set as the catalyst addition amount of the coal to be tested.

[0049] The beneficial effects of the present invention are:

[0050] By applying the above technical scheme, the present invention obtains accurate moisture data in the coal by real-time detection of the characteristic spectral data of the coal to be tested, and controls the amount of catalyst added based on the moisture data in the coal, thereby achieving precise control of the catalyst, which can effectively improve the coal combustion efficiency, save coal costs, and achieve full utilization of coal energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0052] Figure 1 A schematic structural diagram of a coal-fired catalyst addition control system based on moisture in coal proposed in an embodiment of the present invention is shown;

[0053] Figure 2 The overall flow chart of a method for controlling the addition of catalyst to coal based on the moisture in coal proposed in an embodiment of the present invention is shown.

[0054] In the figure: 1. dosing box; 2. dosing pipeline; 3. first solenoid valve; 4. dilution box; 5. dilution pipeline; 6. second solenoid valve; 7. catalyst flow meter; 8. third solenoid valve; 9. dilution liquid flow meter; 10. fourth solenoid valve; 11. catalyst inlet pipeline; 12. mixing spray device; 13. dilution liquid inlet pipeline; 14. coal conveying platform; 15. detection device. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0057] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] The present application embodiment provides a coal-fired catalyst addition control system based on the moisture in coal, such as Figure 1 As shown, including:

[0059] A catalyst adding component; a flow regulating component, the input end of which is connected to the catalyst adding component and is used to control the amount of catalyst added to the catalyst adding component; a spraying control component, the input end of which is connected to the flow regulating component and is used to spray the catalyst in the flow regulating component onto the surface of the coal; a detection component, which is arranged on the side close to the coal and is used to collect characteristic spectral data of the coal and control the flow regulating component according to the characteristic spectral data.

[0060] In this embodiment, the detection component includes a laser and a spectrometer. The laser is emitted to the coal to be tested to generate plasma. The plasma of the coal to be tested is received by the spectrometer to generate characteristic spectral data. The flow regulation component is controlled by the characteristic spectral data to achieve control of the amount of catalyst added. A certain amount of catalyst is sprayed onto the coal surface through the spray control component to improve the coal combustion efficiency and save coal costs.

[0061] In some embodiments of the present application, the catalyst addition component includes: a dosing box 1; a dosing pipeline 2, one end of which is connected to the dosing box 1 and the other end is connected to the flow regulating component, and a first solenoid valve 3 is provided on the dosing pipeline 2; a dilution box 4; a dilution pipeline 5, one end of which is connected to the dilution box 4 and the other end is connected to the flow regulating component, and a second solenoid valve 6 is provided on the dilution pipeline 5.

[0062] In this embodiment, the catalyst is introduced into the dosing tank 1 , and the diluent is introduced into the dilution tank 4 . The diluent may be water. The dilution degree of the catalyst is adjusted by the first solenoid valve 3 and the second solenoid valve 6 .

[0063] In some embodiments of the present application, the flow regulating component includes: a catalyst flowmeter 7, connected to the dosing pipeline 2; a third solenoid valve 8, arranged on the side of the dosing pipeline 2 close to the catalyst flowmeter 7; a dilution liquid flowmeter 9, connected to the dilution pipeline 5; and a fourth solenoid valve 10, arranged on the side of the dilution pipeline 5 close to the dilution liquid flowmeter 9.

[0064] In this embodiment, the flow regulating component receives the control signal of the detection component and regulates the flow of the catalyst through the third solenoid valve 8 and the fourth solenoid valve 10 .

[0065] In some embodiments of the present application, the spray control component includes: a catalyst inlet pipeline 11, one end of which is connected to the catalyst flowmeter 7, and the other end is connected to a mixing spray device 12; a diluent inlet pipeline 13, one end of which is connected to the diluent flowmeter 9, and the other end is connected to the mixing spray device 12.

[0066] In this embodiment, the catalyst and the diluent enter the mixing spraying device 12 for mixing after passing through the flow regulating component, and the diluted catalyst is sprayed onto the surface of the coal through the mixing spraying device 12.

[0067] In some embodiments of the present application, the detection component includes: a coal conveying platform 14, which is arranged in the spraying direction of the mixing spraying device 12; a detection device 15, which is arranged on the coal conveying platform 14, and is used to collect characteristic spectral data of coal, and control the flow regulating component according to the characteristic spectral data.

[0068] In this embodiment, the detection device 15 collects characteristic spectrum data of the coal to be tested and sprays the catalyst through the spray control component, and then transports the coal to the boiler for combustion through the coal conveying platform 14.

[0069] Based on the same technical concept, such as Figure 2 As shown, the present invention also provides a control method for a coal-fired catalyst addition control system based on moisture in coal, which is applied to the above-mentioned coal-fired catalyst addition control system based on moisture in coal, and the method comprises:

[0070] S101, acquiring characteristic spectrum data of the coal to be tested, and determining moisture data in the coal according to the characteristic spectrum data of the coal to be tested, wherein the moisture data in the coal specifically includes moisture content, pH value and impurity content of the coal to be tested;

[0071] In some embodiments of the present application, determining the moisture data in coal based on the characteristic spectral data of the tested coal includes: obtaining historical coal characteristic spectral data and corresponding moisture data in coal, and preprocessing the historical coal characteristic spectral data and the corresponding moisture data in coal; establishing a training sample set based on the preprocessed historical coal characteristic spectral data and the corresponding moisture data in coal, and establishing an initial moisture in coal recognition model based on the training sample set; training the initial moisture in coal recognition model based on the training sample set to obtain a trained moisture in coal recognition model; inputting the characteristic spectral data of the tested coal into the trained moisture in coal recognition model to obtain the corresponding moisture data in coal.

[0072] In this embodiment, the moisture data of the coal to be tested is identified based on the deep learning neural network model, thereby identifying the moisture data in the coal according to the characteristic spectrum data of the coal to be tested.

[0073] S102, determining moisture characteristic data according to the moisture data in the coal, determining a combustion efficiency coefficient according to the moisture characteristic data of the coal to be tested, and determining a catalyst addition amount of the coal to be tested according to the combustion efficiency coefficient.

[0074] In some embodiments of the present application, the determination of moisture characteristic data based on moisture data in coal includes: obtaining a preset standard pH value, calculating the difference between the preset standard pH value and the pH value of the coal to be tested, and normalizing the difference between the preset standard pH value and the pH value of the coal to be tested to obtain pH value characteristic data; normalizing the moisture content and impurity parameters of the coal to be tested respectively to obtain moisture content characteristic data and impurity characteristic data; determining a first length and a second length based on the moisture content characteristic data and the impurity characteristic data, determining a third length based on the pH value characteristic data, constructing a rhombus based on the first length and the second length, and constructing a triangular pyramid using the third length as the height of the rhombus; and calculating the area value of the triangular pyramid to obtain moisture characteristic data.

[0075] In this embodiment, the pH value of the moisture in the coal will affect the reaction effect of the catalyst, and the moisture content and impurity content will affect the combustion efficiency of the boiler. A triangular pyramid is constructed by normalizing the moisture content characteristic data in the coal, the pH value characteristic data and the impurity content characteristic data, thereby calculating the moisture characteristic data.

[0076] In some embodiments of the present application, the method of determining the combustion efficiency coefficient based on the moisture characteristic data of the coal to be tested includes: obtaining historical coal moisture characteristic data, and establishing a combustion efficiency change curve based on the historical coal moisture characteristic data and the corresponding boiler combustion efficiency; obtaining preset segmentation segments, dividing the combustion efficiency change curve into a number of data segments according to the preset segmentation segments, and calculating the correlation coefficient between the coal moisture characteristic data and the boiler combustion efficiency in each data segment; obtaining the correlation coefficient corresponding to the data segment where the moisture characteristic data of the coal to be tested is located, calculating the ratio of the correlation coefficient corresponding to the data segment where the moisture characteristic data of the coal to be tested is located to the preset allowable correlation coefficient, and obtaining the combustion efficiency correction coefficient; multiplying the moisture characteristic data by the combustion efficiency correction coefficient to obtain the combustion efficiency coefficient.

[0077] In this embodiment, historical coal combustion data of the unit is statistically collected, and a combustion efficiency change curve is established through the moisture characteristic data of the historical coal combustion data and the corresponding boiler combustion efficiency. The combustion efficiency change curve is divided into multiple data segments through preset segmentation segments, and the correlation coefficient of each data segment is calculated. The combustion efficiency correction coefficient is obtained by the ratio of the correlation coefficient corresponding to the data segment where the moisture characteristic data of the tested coal is located and the preset allowable correlation coefficient, thereby calculating the combustion efficiency coefficient.

[0078] In some embodiments of the present application, the method of determining the catalyst addition amount of the coal to be tested based on the combustion efficiency coefficient includes: obtaining a preset standard combustion efficiency coefficient, calculating the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient, and judging whether the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a first preset threshold value; if the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than the first preset threshold value, setting the preset first addition amount as the catalyst addition amount of the coal to be tested; if the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is less than or equal to the first preset threshold value, judging whether the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than the second preset threshold value; if the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than the second preset threshold value, setting the preset second addition amount as the catalyst addition amount of the coal to be tested; if the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is less than or equal to the second preset threshold value, setting the preset third addition amount as the catalyst addition amount of the coal to be tested.

[0079] In this embodiment, the first addition amount, the second addition amount, and the third addition amount increase sequentially, and the catalyst addition amount of the tested coal is set by the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient. The larger the difference, the larger the corresponding catalyst addition amount, and the catalyst is precisely controlled to effectively improve the coal combustion efficiency.

[0080] By applying the above technical scheme, the present invention includes a catalyst adding component; a flow regulating component, the input end of which is connected to the catalyst adding component, for controlling the amount of catalyst added to the catalyst adding component; a spraying control component, the input end of which is connected to the flow regulating component, for spraying the catalyst in the flow regulating component onto the surface of coal; and a detection component, which is arranged on the side close to the coal, for collecting characteristic spectral data of the coal, and controlling the flow regulating component according to the characteristic spectral data. The present invention can effectively improve the coal combustion efficiency and save coal costs by adjusting the amount of catalyst added to the coal in real time by collecting the characteristic spectral data of the coal.

[0081] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present invention can be implemented by hardware, or by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present invention.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A coal-fired catalyst addition control system based on moisture in coal, characterized in that: include: Catalyst addition assembly; A flow regulating component, the input end of which is connected to the catalyst adding component and is used to control the amount of catalyst added to the catalyst adding component; A spray control component, the input end of which is connected to the flow regulating component, and is used to spray the catalyst in the flow regulating component onto the surface of the coal; The detection component is arranged at a side close to the coal and is used to collect characteristic spectrum data of the coal and control the flow regulating component according to the characteristic spectrum data.

2. The coal-fired catalyst addition control system based on moisture in coal according to claim 1, characterized in that: The catalyst adding assembly comprises: Add medicine box; A dosing pipeline, one end of which is connected to the dosing box, and the other end of which is connected to the flow regulating component, and a first solenoid valve is provided on the dosing pipeline; Dilution box; A dilution pipeline has one end connected to the dilution box and the other end connected to the flow regulating component. A second solenoid valve is arranged on the dilution pipeline.

3. The coal-fired catalyst addition control system based on moisture in coal according to claim 2, characterized in that: The flow regulating component comprises: A catalyst flow meter connected to the dosing pipeline; A third solenoid valve is arranged on a side of the dosing pipeline close to the catalyst flow meter; A diluent flow meter, connected to the dilution pipeline; The fourth solenoid valve is arranged on the dilution pipeline at a side close to the dilution liquid flow meter.

4. The coal-fired catalyst addition control system based on moisture in coal according to claim 2, characterized in that: The spray control assembly comprises: A catalyst inlet pipeline, one end of which is connected to the catalyst flow meter and the other end of which is connected to a mixing spraying device; The diluent inlet pipeline has one end connected to the diluent flow meter and the other end connected to the mixing spraying device.

5. The coal-fired catalyst addition control system based on moisture in coal according to claim 4, characterized in that: The detection component comprises: A coal conveying platform, arranged in the spraying direction of the mixing spraying device; The detection device is arranged on the coal conveying platform and is used for collecting characteristic spectrum data of coal and controlling the flow regulating component according to the characteristic spectrum data.

6. A control method for a coal-fired catalyst addition control system based on moisture in coal, applied to a coal-fired catalyst addition control system based on moisture in coal as claimed in any one of claims 1 to 5, characterized in that: The method comprises: Acquire characteristic spectrum data of the coal to be tested, and determine moisture data in the coal according to the characteristic spectrum data of the coal to be tested, wherein the moisture data in the coal specifically includes moisture content, pH value and impurity content of the coal to be tested; The moisture characteristic data is determined according to the moisture data in the coal, the combustion efficiency coefficient is determined according to the moisture characteristic data of the tested coal, and the amount of catalyst added to the tested coal is determined according to the combustion efficiency coefficient.

7. The method for controlling the addition of catalyst to coal based on the moisture in coal according to claim 6, characterized in that: The method of determining the moisture content of the coal according to the characteristic spectrum data of the coal to be tested includes: Acquire historical coal characteristic spectrum data and corresponding coal moisture data, and pre-process the historical coal characteristic spectrum data and corresponding coal moisture data; A training sample set is established based on the pre-processed historical coal characteristic spectrum data and the corresponding coal moisture data, and an initial coal moisture recognition model is established based on the training sample set; The initial coal moisture recognition model is trained according to the training sample set to obtain a trained coal moisture recognition model; The characteristic spectrum data of the coal to be tested is input into the trained coal moisture identification model to obtain the corresponding coal moisture data.

8. The method for controlling the addition of catalyst to coal based on the moisture in coal according to claim 7, characterized in that: Determining moisture characteristic data according to the moisture data in coal includes: Obtaining a preset standard pH value, calculating a difference between the preset standard pH value and the pH value of the coal to be tested, and normalizing the difference between the preset standard pH value and the pH value of the coal to be tested to obtain pH value characteristic data; Normalizing the moisture content and impurity parameters of the coal to be tested respectively to obtain moisture content characteristic data and impurity characteristic data; Determine a first length and a second length according to the moisture content characteristic data and the impurity characteristic data, determine a third length according to the pH value characteristic data, construct a rhombus according to the first length and the second length, and use the third length as the height of the rhombus to construct a triangular pyramid; Calculate the area value of the triangular pyramid and obtain the moisture characteristic data.

9. The method for controlling the addition of catalyst to coal based on the moisture in coal according to claim 8, characterized in that: The step of determining the combustion efficiency coefficient according to the moisture characteristic data of the coal to be tested includes: Obtain historical coal moisture characteristic data, and establish a combustion efficiency change curve based on the historical coal moisture characteristic data and the corresponding boiler combustion efficiency; Obtaining a preset segmentation segment, dividing the combustion efficiency change curve into a number of data segments according to the preset segmentation segment, and calculating the correlation coefficient between the coal moisture characteristic data and the boiler combustion efficiency in each data segment; Obtaining the correlation coefficient corresponding to the data segment where the moisture characteristic data of the tested coal is located, calculating the ratio of the correlation coefficient corresponding to the data segment where the moisture characteristic data of the tested coal is located to a preset allowable correlation coefficient, and obtaining the combustion efficiency correction coefficient; Multiply the moisture characteristic data by the combustion efficiency correction factor to obtain the combustion efficiency coefficient.

10. The method for controlling the addition of catalyst to coal based on the moisture in coal according to claim 9, characterized in that: The step of determining the amount of catalyst added to the coal to be tested according to the combustion efficiency coefficient includes: Obtaining a preset standard combustion efficiency coefficient, calculating a difference between a current combustion efficiency coefficient and the preset standard combustion efficiency coefficient, and determining whether the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a first preset threshold; If the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a first preset threshold, the preset first addition amount is set as the catalyst addition amount of the coal to be tested; If the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is less than or equal to the first preset threshold, determining whether the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a second preset threshold; If the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is greater than a second preset threshold, the preset second addition amount is set as the catalyst addition amount of the coal to be tested; If the difference between the current combustion efficiency coefficient and the preset standard combustion efficiency coefficient is less than or equal to the second preset threshold value, the preset third addition amount is set as the catalyst addition amount of the coal to be tested.

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