Desulfurizing tower spraying layer flue gas resistance determination method, device, equipment and medium

Abstract

The invention relates to a desulfurization tower spraying layer flue gas resistance determination method, device and equipment and a medium, and belongs to the technical field of spraying layer flue gas resistance detection.The method comprises the steps that operation data and historical data of a desulfurization tower spraying layer are obtained; performing data fitting according to the historical data, and drawing a flow velocity-density-resistance coordinate graph; the spraying layer resistance of each spraying layer is determined according to the operation data and the flow velocity-density-resistance coordinate graph, and the spraying layer flue gas resistance is obtained according to the spraying layer resistance; according to the method, the flow velocity-density-resistance coordinate graph is drawn, the running data of the spraying layers of the desulfurization tower are looked up through the flow velocity-density-resistance coordinate graph, and the flue gas resistance of the spraying layers can be obtained, so that the technical problem that in the prior art, calculation is simplified when the resistance of each spraying layer is 250 pa, and the calculation deviation is large is solved.

Description

Technical Field

[0001] The invention relates to the technical field of spray layer smoke resistance detection, and in particular to a method, device, equipment and medium for determining the smoke resistance of a desulfurization tower spray layer. Background Art

[0002] Since the implementation of the Air Pollutant Emission Standards, the emission standards for coal-fired waste gas have been gradually strengthened, and the sulfur dioxide emission standard has been increased from the original 600mg / Nm 3 Gradually reduced to the current 35mg / Nm 3 Initially, the SO2 emission standard for wet flue gas desulfurization equipment in coal-fired power plants was less than 200 mg / Nm 3 , desulfurization efficiency is about 90%, liquid-gas ratio (ratio of desulfurization circulation pump flow to flue gas flow) is about 10L / Nm 3 The desulfurization efficiency can be achieved and the emission can meet the standard. At this time, the number of spray layers required is small (usually three layers), the spray density of the desulfurization tower (the ratio of the flow rate of the desulfurization circulation pump to the cross-sectional area of ​​the desulfurization tower) is small, and the resistance of the flue gas passing through the spray layer is small. In the process design, the resistance level of the flue gas passing through each spray layer is generally 250pa to simplify the calculation (that is, the resistance through three spray layers is 750pa), and it can generally meet the selection requirements of the induced draft fan or booster fan.

[0003] At present, coal-fired power plants are required to have ultra-low emissions, that is, the SO2 emission standard is less than 35mg / Nm 3 , desulfurization efficiency is about 98%, and the liquid-gas ratio is generally not less than 20L / Nm 3 Only when the number of spray layers is larger (the original concentration of SO2 in the flue gas is greater than 3000mg / Nm 3 When the desulfurization tower is used, it is generally five layers), the desulfurization tower spray density (the ratio of the desulfurization circulating pump flow rate to the desulfurization tower cross-sectional area) is large, and the resistance of the flue gas through the spray layer is large. If the calculation is still simplified according to the resistance level of the flue gas passing through each spray layer of 250pa, it will cause a large calculation deviation, leading to the selection error of the induced draft fan or booster fan.

[0004] Therefore, it is urgent to propose a method, device, equipment and medium for determining the flue gas resistance of the desulfurization tower spray layer to solve the technical problem in the prior art that the calculation is simplified according to the resistance of the flue gas passing through each spray layer is 250 Pa, which leads to large calculation deviations. Summary of the invention

[0005] In view of this, it is necessary to provide a method, device, equipment and medium for determining the flue gas resistance of the desulfurization tower spray layer to solve the technical problem in the prior art that the calculation is simplified according to the resistance of the flue gas passing through each spray layer is 250 Pa, which will lead to large calculation deviations.

[0006] In order to solve the above problems, the present invention provides a method for determining the flue gas resistance of a desulfurization tower spray layer, comprising: Obtain the operating data and historical data of the desulfurization tower spray layer; Perform data fitting based on the historical data and draw a velocity-density-resistance coordinate diagram; The spray layer resistance of each spray layer is determined according to the operation data and the flow rate-density-resistance coordinate diagram, and the spray layer smoke resistance is obtained according to all the spray layer resistances.

[0007] In a possible implementation, the historical data includes multiple groups of data corresponding to each of the multiple superficial flow rates, and performing data fitting according to the historical data to draw a velocity-density-resistance coordinate diagram includes: Performing data fitting on the multiple sets of data corresponding to each empty tower flow velocity to obtain a trend line corresponding to each empty tower flow velocity; According to the spray area resistances corresponding to different spray densities in the trend line, a flow rate-density-resistance coordinate diagram is drawn.

[0008] In a possible implementation, the operation data includes the number of spray layers, the current empty tower flow rate and the spray density, and the spray layer resistance of each spray layer is determined according to the operation data and the flow rate-density-resistance coordinate diagram, and the spray layer smoke resistance is obtained according to all the spray layer resistances, including: Determining a target trend line in the velocity-density-resistance coordinate diagram according to the current empty tower flow rate; Determining a target spray density corresponding to each spray layer according to the number of spray layers and the spray density; The flow rate-density-resistance coordinate diagram is processed according to the target trend line and the target spray density to obtain the spray layer resistance of each spray layer.

[0009] In a possible implementation, the processing of the flow rate-density-resistance coordinate diagram according to the target trend line and the target spray density to obtain the spray layer resistance of each spray layer includes: The velocity-density-resistance coordinate diagram is searched according to the target spray density of each spray layer to determine the spray layer resistance corresponding to each target spray density in the target trend line.

[0010] In a possible implementation, the operation data includes pressure difference data, and obtaining the spray layer smoke resistance according to all spray layer resistances includes: Adding up all the spray layer resistances to obtain the smoke resistance of the spray layer to be determined; Determining a fluctuation range according to the pressure difference data; When the smoke resistance of the spray layer to be determined is in the fluctuation range, the smoke resistance of the spray layer to be determined is determined as the smoke resistance of the spray layer.

[0011] In a possible implementation, determining the target spray density corresponding to each spray layer according to the number of spray layers and the spray density includes: The number of spray layers corresponding to each spray layer in the desulfurization tower spray layer is multiplied by the spray density to obtain the target spray density corresponding to each spray layer.

[0012] In a possible implementation, the method includes: Set the flue gas velocity range; A plurality of discrete variables are set according to the flue gas flow rate interval to obtain a plurality of empty tower flow rates.

[0013] On the other hand, the present invention also provides a device for determining the flue gas resistance of a spray layer of a desulfurization tower, comprising: Data acquisition module, used to obtain the operation data and historical data of the desulfurization tower spray layer; A coordinate graph drawing module, used for performing data fitting according to the historical data and drawing a velocity-density-resistance coordinate graph; The resistance determination module is used to determine the spray layer resistance of each spray layer according to the operation data and the flow rate-density-resistance coordinate diagram, and obtain the spray layer smoke resistance according to all the spray layer resistances.

[0014] On the other hand, an embodiment of the present invention discloses an electronic device, comprising: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, each step of the above-mentioned embodiment of the method for determining the flue gas resistance of the spray layer of a desulfurization tower is implemented.

[0015] On the other hand, an embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, each step of the above-mentioned embodiment of the method for determining the flue gas resistance of the spray layer of a desulfurization tower is implemented.

[0016] The beneficial effects of the present invention are: obtaining the operating data and historical data of the desulfurization tower spray layer; performing data fitting according to the historical data and drawing a flow rate-density-resistance coordinate diagram; determining the spray layer resistance of each spray layer according to the operating data and the flow rate-density-resistance coordinate diagram, and obtaining the spray layer flue gas resistance according to all spray layer resistances; the present invention draws a flow rate-density-resistance coordinate diagram, and the operating data of the desulfurization tower spray layer is looked up in a table through the flow rate-density-resistance coordinate diagram to obtain the spray layer flue gas resistance, thereby solving the technical problem in the prior art that the resistance of each spray layer is 250 Pa to simplify the calculation, resulting in a large calculation deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic flow chart of an embodiment of a method for determining the flue gas resistance of a desulfurization tower spray layer provided by the present invention; Figure 2 A coordinate diagram of an embodiment of a flow velocity-density-resistance coordinate diagram provided by the present invention; Figure 3 For the present invention Figure 1 A schematic flow chart of an embodiment of step S103; Figure 4 A schematic flow chart of an embodiment of low resistance search in a velocity-density-resistance coordinate diagram provided by the present invention; Figure 5 A schematic structural diagram of an embodiment of a device for determining the flue gas resistance of a spray layer of a desulfurization tower provided by the present invention; Figure 6 A schematic structural diagram of an embodiment of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0019] like Figure 1 As shown, a specific embodiment of the present invention discloses a method for determining the flue gas resistance of a desulfurization tower spray layer, comprising: S101. Obtaining operation data and historical data of the desulfurization tower spray layer; S102, performing data fitting according to historical data, and drawing a velocity-density-resistance coordinate diagram; S103, determining the spray layer resistance of each spray layer according to the operation data and the flow rate-density-resistance coordinate diagram, and obtaining the spray layer smoke resistance according to all the spray layer resistances.

[0020] It should be understood that in the prior art, the low emission standard is: the SO2 emission standard of the wet flue gas desulfurization device of a coal-fired power plant is less than 200 mg / Nm 3 , when the desulfurization efficiency is about 90% and the liquid-gas ratio is about 10L / Nm3, the spray layer is generally three layers. The resistance of flue gas passing through the spray layer is generally simplified. The resistance of flue gas passing through each spray layer is 250pa, and the resistance through three layers of spray is: 3×250pa=750pa. Ultra-low emission standard: The SO2 emission standard of wet flue gas desulfurization device in coal-fired power plant is less than 35mg / Nm 3 , desulfurization efficiency is about 98%, liquid-gas ratio is about 20L / Nm 3 When the temperature is about 20000 °C, the spray layer is generally four to five layers. Except for some power plants in high-sulfur coal producing areas, the spray layer is generally not more than 6 layers. If the simplified calculation is still adopted, the resistance of the flue gas passing through the spray layer is 250 Pa, and the resistance of the flue gas passing through five layers of spray is: 5×250 Pa=1250 Pa.

[0021] In a specific embodiment of the present invention, the operation data of many items can be obtained as historical data, wherein the actual detection data of multiple sets of operating devices can be obtained, and the specific acquisition method can be set according to the actual situation, and the embodiment of the present invention is not limited here. Then the historical data can be fitted and analyzed, so that the velocity-density-resistance coordinate diagram can be drawn, and then when the flue gas resistance of the desulfurization tower spray layer needs to be detected, the operation data of the desulfurization tower spray layer can be obtained, and then the spray layer resistance of each spray layer can be determined through the operation data and the velocity-density-resistance coordinate diagram, and the spray layer flue gas resistance can be obtained according to all the spray layer resistances.

[0022] Compared with the prior art, the present embodiment provides the method of obtaining the operating data and historical data of the desulfurization tower spray layer; performing data fitting according to the historical data and drawing a velocity-density-resistance coordinate diagram; determining the spray layer resistance of each spray layer according to the operating data and the velocity-density-resistance coordinate diagram, and obtaining the spray layer flue gas resistance according to all spray layer resistances; the present invention draws a velocity-density-resistance coordinate diagram, and through the velocity-density-resistance coordinate diagram, the operating data of the desulfurization tower spray layer is looked up in a table to obtain the spray layer flue gas resistance, thereby solving the technical problem in the prior art that the resistance of each spray layer is 250 Pa to simplify the calculation, resulting in a large calculation deviation.

[0023] In some embodiments of the present invention, the historical data includes multiple sets of data corresponding to each of the multiple superficial flow rates, and step S102 includes: Perform data fitting on multiple sets of data corresponding to each empty tower flow rate to obtain a trend line corresponding to each empty tower flow rate; According to the spray area resistance corresponding to different spray densities in the trend line, draw a velocity-density-resistance coordinate diagram.

[0024] In a specific embodiment of the present invention, multiple sets of data from multiple devices with the same empty tower flow rate and different spray densities can be collected, so that multiple sets of data for each empty tower flow rate can be fitted, so that the trend line corresponding to each empty tower flow rate can be obtained. In order to facilitate the query of charts, the flue gas flow rate can be set as a series of discrete variables. Because the range of the flue gas flow rate variable is very narrow, the actual process design is between 3.0-3.8, that is, the flue gas flow rate interval is 3.0-3.8, so it is chosen to make the flow rate variable into a series of discrete variables. The variation range of the spray density variable is too large to be suitable for discreteness, so the flue gas flow rate can be set to 3.1 / 3.2 / 3.3 / 3.4 / 3.5 / 3.6 / 3.7 / 3.8, 8 discrete variables, that is, 8 empty tower flow rates. It is equivalent to fixing the empty tower flow rate variable, leaving only the spray density variable. So there is only one independent variable: spray density, and one dependent variable: flue gas resistance, such as Figure 2 As shown in the figure, the 8 trend lines in the figure represent the trend lines of each discrete variable, the x-axis is the spray density, and the y-axis is the spray area resistance. When fitting multiple sets of data, the spray area resistance corresponding to each spray density can be determined, and then when the trend line of each discrete variable is obtained, the corresponding spray density and spray area resistance can be obtained at the same time, and then the flow rate-density-resistance coordinate diagram (i.e. Figure 2 ).

[0025] In some embodiments of the present invention, the operation data includes the number of spray layers, the current empty tower flow rate and the spray density, such as Figure 3 As shown, step S103 includes: S301, determining a target trend line in a velocity-density-resistance coordinate diagram according to the current empty tower flow velocity; S302, determining a target spray density corresponding to each spray layer according to the number of spray layers and the spray density; S303 , processing the velocity-density-resistance coordinate diagram according to the target trend line and the target spray density to obtain the spray layer resistance of each spray layer.

[0026] In a specific embodiment of the present invention, the operation data may include the number of spray layers, the current empty tower flow rate and the spray density. The target trend line of the eight empty tower flow rates in the velocity-density-resistance coordinate diagram can be determined according to the current empty tower flow rate. For example, taking a certain power plant ultra-low emission wet desulfurization tower as an example, combined with the instrument detection data of the desulfurization device, a table lookup calculation test is performed. The spray density q of the spray layer of the power plant is 58m 3 / hm 2, the empty tower velocity of flue gas in the desulfurization tower is v=3.50m / s, and there are 5 spray layers, from top to bottom, they are the 5th spray layer, the 4th spray layer, the 3rd spray layer, the 2nd spray layer, and the 1st spray layer. The empty tower velocity v is 3.50m / s, so the target trend line is the d trend line in the velocity-density-resistance coordinate diagram.

[0027] In some embodiments of the present invention, step S302 includes: Multiply the number of spray layers corresponding to each spray layer in the desulfurization tower spray layer by the spray density to obtain the target spray density corresponding to each spray layer.

[0028] In a specific embodiment of the present invention, the number of spray layers corresponding to each spray layer in the desulfurization tower spray layer can then be multiplied by the spray density to obtain the target spray density corresponding to each spray layer. For example, the target spray density of the fifth spray layer is 1×58=58, the target spray density of the fourth spray layer is 2×58=116, the target spray density of the third spray layer is 3×58=174, the target spray density of the second spray layer is 4×58=232, and the target spray density of the first spray layer is 5×58=290.

[0029] In some embodiments of the present invention, step S303 includes: According to the target spray density of each spray layer, the velocity-density-resistance coordinate diagram is searched to determine the spray layer resistance corresponding to each target spray density in the target trend line.

[0030] In a specific embodiment of the present invention, the velocity-density-resistance coordinate diagram can be searched according to the target spray density of each spray layer, and the spray layer resistance corresponding to each target spray density in the target trend line can be obtained, such as Figure 4 As shown, the x-axis is the spray density, the y-axis is the spray area resistance, the target spray density of the fifth spray layer is 1×58=58, the empty tower flow velocity v is 3.50m / s, and the target trend line is the d trend line. It can be found that the spray layer resistance corresponding to 58 on the d trend line is P5=102.17pa, the target spray density of the fourth spray layer is 2×58=116, then the spray layer resistance corresponding to the d trend line is P4=199.64pa, and the target spray density of the third spray layer is 3×58=174, then the spray layer resistance corresponding to the d trend line is P3=295.41, the target spray density of the second spray layer is 4×58=232, then the spray layer resistance corresponding to the d trend line is P2=390.1pa, the target spray density of the first spray layer is 5×58=290, then the spray layer resistance corresponding to the d trend line is P1=483.98pa, Note: Since the original sulfur dioxide concentration of the flue gas of the power plant is not particularly high, only 5 layers of spraying are needed, so Figure 4The data (348, 577.24) is not used. If you encounter a device that requires 6 layers of spraying, this data can be used.

[0031] In some embodiments of the present invention, the operation data includes pressure difference data, and the spray layer smoke resistance is obtained by calculation based on all spray layer resistances, including: Add up all spray layer resistances to obtain the smoke resistance of the spray layer to be determined; Determine the fluctuation range based on the pressure difference data; When the smoke resistance of the spray layer to be determined is in the fluctuation range, the smoke resistance of the spray layer to be determined is determined as the smoke resistance of the spray layer.

[0032] In a specific embodiment of the present invention, all spray layer resistances can be added to obtain the smoke resistance of the spray layer to be determined. For example, the smoke resistance of the spray layer to be determined when the smoke passes through 5 spray layers is P=P5+P4+P3+P2+P1=1471.31Pa. The fluctuation range of the pressure difference data detected by the on-site pressure sensor during full load operation is 1350 to 1550Pa. It can be judged that 1471.31Pa is in the fluctuation range, and the smoke resistance of the spray layer to be determined can be determined as the smoke resistance of the spray layer, that is, the smoke resistance of the spray layer is 1471.31Pa. When the smoke resistance of the spray layer to be determined is not in the fluctuation range, step S101 and subsequent steps can be repeated, and other processes can also be performed. The embodiment of the present invention is not limited here. It shows that the table calculation result can be used as the basis for design. If P=250×5=1250Pa is calculated according to the simple algorithm, there is a 20% deviation from the table calculation data 1471.31Pa.

[0033] In order to better implement the method for determining the flue gas resistance of the spray layer of the desulfurization tower in the embodiment of the present invention, based on the method for determining the flue gas resistance of the spray layer of the desulfurization tower, the embodiment of the present invention also provides a device for determining the flue gas resistance of the spray layer of the desulfurization tower, such as Figure 5 As shown, the desulfurization tower spray layer flue gas resistance determination device 500 includes: Data acquisition module 501, used to obtain the operation data and historical data of the desulfurization tower spray layer; A coordinate graph drawing module 502 is used to perform data fitting based on historical data and draw a velocity-density-resistance coordinate graph; The resistance determination module 503 is used to determine the spray layer resistance of each spray layer according to the operation data and the velocity-density-resistance coordinate diagram, and obtain the spray layer smoke resistance according to all the spray layer resistances.

[0034] The device 500 for determining the flue gas resistance of the spray layer of a desulfurization tower provided in the above embodiment can implement the technical solution described in the above embodiment of the method for determining the flue gas resistance of the spray layer of a desulfurization tower. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above embodiment of the method for determining the flue gas resistance of the spray layer of a desulfurization tower, which will not be repeated here.

[0035] like Figure 6 As shown, the present invention also provides an electronic device 600. The electronic device 600 includes a processor 601, a memory 602 and a display 603. Figure 6 Only some components of the electronic device 600 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0036] In some embodiments, the memory 602 may be an internal storage unit of the electronic device 600, such as a hard disk or memory of the electronic device 600. In other embodiments, the memory 602 may also be an external storage device of the electronic device 600, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc., equipped on the electronic device 600.

[0037] Furthermore, the memory 602 may include both an internal storage unit of the electronic device 600 and an external storage device. The memory 602 is used to store application software installed in the electronic device 600 and various data.

[0038] In some embodiments, the processor 601 may be a central processing unit (CPU), a microprocessor or other data processing chip, used to run program codes or process data stored in the memory 602, such as the method for determining the flue gas resistance of the spray layer of the desulfurization tower in the present invention.

[0039] In some embodiments, the display 603 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 603 is used to display information of the electronic device 600 and to display a visual user interface. The components 601-603 of the electronic device 600 communicate with each other through a system bus.

[0040] In some embodiments of the present invention, when the processor 601 executes the desulfurization tower spray layer flue gas resistance determination program in the memory 602, the following steps may be implemented: Obtain the operating data and historical data of the desulfurization tower spray layer; Perform data fitting based on historical data and draw a velocity-density-resistance coordinate diagram; The spray layer resistance of each spray layer is determined according to the operating data and the velocity-density-resistance coordinate diagram, and the spray layer smoke resistance is obtained according to all the spray layer resistances.

[0041] It should be understood that: when the processor 601 executes the desulfurization tower spray layer flue gas resistance determination program in the memory 602, in addition to the above functions, other functions can also be realized. For details, please refer to the description of the corresponding method embodiment above.

[0042] Furthermore, the embodiment of the present invention does not specifically limit the type of the electronic device 600 mentioned, and the electronic device 600 may be a portable electronic device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, etc. Exemplary embodiments of portable electronic devices include but are not limited to portable electronic devices equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable electronic devices may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 600 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0043] Accordingly, an embodiment of the present application also provides a computer-readable storage medium, which is used to store computer-readable programs or instructions. When the program or instructions are executed by a processor, it can implement the steps or functions of the method for determining the flue gas resistance of the desulfurization tower spray layer provided in the above-mentioned method embodiments.

[0044] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the computer program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0045] The above is a detailed introduction to the method and device for determining the flue gas resistance of the spray layer of the desulfurization tower provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for determining the flue gas resistance of a desulfurization tower spray layer, characterized in that: include: Obtain the operating data and historical data of the desulfurization tower spray layer; Perform data fitting based on the historical data and draw a velocity-density-resistance coordinate diagram; The spray layer resistance of each spray layer is determined according to the operation data and the flow rate-density-resistance coordinate diagram, and the spray layer smoke resistance is obtained according to all the spray layer resistances.

2. The method for determining the flue gas resistance of the spray layer of the desulfurization tower according to claim 1 is characterized in that: The historical data includes multiple groups of data corresponding to each of the multiple empty tower flow rates, and the data fitting is performed according to the historical data to draw a velocity-density-resistance coordinate diagram, including: Performing data fitting on the multiple sets of data corresponding to each empty tower flow velocity to obtain a trend line corresponding to each empty tower flow velocity; According to the spray area resistances corresponding to different spray densities in the trend line, a flow rate-density-resistance coordinate diagram is drawn.

3. The method for determining the flue gas resistance of the desulfurization tower spray layer according to claim 2 is characterized in that: The operation data includes the number of spray layers, the current empty tower flow rate and the spray density, and the determination of the spray layer resistance of each spray layer according to the operation data and the flow rate-density-resistance coordinate diagram includes: Determining a target trend line in the velocity-density-resistance coordinate diagram according to the current empty tower flow rate; Determining a target spray density corresponding to each spray layer according to the number of spray layers and the spray density; The flow rate-density-resistance coordinate diagram is processed according to the target trend line and the target spray density to obtain the spray layer resistance of each spray layer.

4. The method for determining the flue gas resistance of the desulfurization tower spray layer according to claim 3 is characterized in that: The process of processing the flow rate-density-resistance coordinate diagram according to the target trend line and the target spray density to obtain the spray layer resistance of each spray layer includes: The velocity-density-resistance coordinate diagram is searched according to the target spray density of each spray layer to determine the spray layer resistance corresponding to each target spray density in the target trend line.

5. The method for determining the flue gas resistance of the desulfurization tower spray layer according to claim 1 is characterized in that: The operation data includes pressure difference data, and the spray layer smoke resistance is obtained according to all spray layer resistances, including: Adding up all the spray layer resistances to obtain the smoke resistance of the spray layer to be determined; Determining a fluctuation range according to the pressure difference data; When the smoke resistance of the spray layer to be determined is in the fluctuation range, the smoke resistance of the spray layer to be determined is determined as the smoke resistance of the spray layer.

6. The method for determining the flue gas resistance of the spray layer of the desulfurization tower according to claim 3 is characterized in that: The step of determining the target spray density corresponding to each spray layer according to the number of spray layers and the spray density includes: The number of spray layers corresponding to each spray layer in the desulfurization tower spray layer is multiplied by the spray density to obtain the target spray density corresponding to each spray layer.

7. The method for determining the flue gas resistance of the spray layer of the desulfurization tower according to claim 2 is characterized in that: The method comprises: Set the flue gas velocity range; A plurality of discrete variables are set according to the flue gas flow rate interval to obtain a plurality of empty tower flow rates.

8. A device for determining the flue gas resistance of a desulfurization tower spray layer, characterized in that: include: Data acquisition module, used to obtain the operation data and historical data of the desulfurization tower spray layer; A coordinate graph drawing module, used for performing data fitting according to the historical data and drawing a velocity-density-resistance coordinate graph; The resistance determination module is used to determine the spray layer resistance of each spray layer according to the operation data and the flow rate-density-resistance coordinate diagram, and obtain the spray layer smoke resistance according to all the spray layer resistances.

9. An electronic device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the method for determining the flue gas resistance of the spray layer of a desulfurization tower as described in any one of claims 1-7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for determining the flue gas resistance of the spray layer of a desulfurization tower as described in any one of claims 1-7 are implemented.

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