Filter cloth type disc dehydrator chlorine reduction device

Abstract

The invention discloses a filter cloth type disc dehydrator chlorine reduction device, which comprises a first module used for dividing a plurality of monitoring areas and setting a plurality of monitoring points, and obtaining the chloride ion concentration and the slurry temperature of each monitoring point; the second module is used for comparing the chloride ion concentration and the slurry temperature of each monitoring point with a standard chloride ion concentration interval and a standard slurry temperature interval respectively to generate an operation evaluation value, and obtaining the chlorine reduction grade and grade characteristics of the corresponding monitoring area according to the operation evaluation value; the third module is used for generating a chlorine reduction control scheme corresponding to the monitoring area based on the chlorine reduction grade and the grade characteristic and generating a chlorine reduction control instruction; and the fourth module is used for acquiring the actual change characteristics of each monitoring point, generating an application evaluation value of the chlorine reduction control scheme in combination with related monitoring parameters of a plurality of evaluation indexes, judging whether a correction instruction is generated or not according to the application evaluation value, and improving the chlorine reduction efficiency of the chlorine reduction device of the filter cloth type disc dehydrator and the quality of desulfurized gypsum.

Description

Technical Field

[0001] The present application relates to the technical field of dechlorination of dehydrators, and in particular to a chlorination device for a filter cloth type disc dehydrator. Background Art

[0002] The flue gas from coal-fired boilers in thermal power plants contains large amounts of SO2 and NOX, which directly pollute the atmospheric environment. Flue gas desulfurization (FGD) technology is of great environmental significance for reducing SO2 emissions and pollution. Among them, limestone-gypsum wet FGD technology is widely used because it is the most mature and reliable. Currently, most power plants use filter cloth disc dehydrator systems to dehydrate gypsum slurry in wet FGD. However, the chloride ion content of gypsum removed by filter cloth disc dehydrator is relatively high. Therefore, a filter cloth disc dehydrator chlorine reduction device is urgently needed to effectively reduce the chloride ion content in desulfurized gypsum and improve the quality of desulfurized gypsum. Summary of the Invention

[0003] In order to solve the above technical problems, the present application provides a filter cloth type disc dehydrator chlorine reduction device, which obtains the slurry temperature and chloride ion concentration of each monitoring point by setting multiple monitoring areas and monitoring points, and generates an operation evaluation value of the corresponding monitoring point. The chlorine reduction level and level characteristics of the corresponding monitoring area are set according to the operation evaluation value, and the chlorine reduction control scheme of the monitoring area is determined according to the chlorine reduction level and level characteristics. The application evaluation value of the chlorine reduction control scheme is generated according to the actual change characteristics and the relevant monitoring parameters of multiple evaluation indicators, and it is determined whether the chlorine reduction control scheme is revised, so as to improve the chlorine reduction efficiency and desulfurization gypsum quality of the filter cloth type disc dehydrator chlorine reduction device.

[0004] In some embodiments of the present application, a filter cloth disc dehydrator chlorine reduction device is provided, comprising:

[0005] The first module is used to divide the filter cloth disc dehydrator into multiple monitoring areas, set multiple monitoring points for each monitoring area, and obtain the chloride ion concentration and slurry temperature at each monitoring point;

[0006] The second module is used to compare the chloride ion concentration and slurry temperature of each monitoring point with the standard chloride ion concentration and standard slurry temperature range respectively, generate the operation evaluation value of the corresponding monitoring point according to the comparison results, and obtain the chlorine reduction level and level characteristics of the corresponding monitoring area according to the operation evaluation values ​​of all monitoring points in the same monitoring area;

[0007] The third module is used to generate a chlorine reduction control plan for the corresponding monitoring area based on the chlorine reduction level and level characteristics of each monitoring area, and generate a chlorine reduction control instruction for the corresponding monitoring area based on the chlorine reduction control plan;

[0008] The fourth module is used to obtain the actual change characteristics at each monitoring point, and combine the relevant monitoring parameters of multiple evaluation indicators to generate an application evaluation value of the chlorine reduction control plan for the corresponding monitoring area, and determine whether to generate a correction instruction for the chlorine reduction control plan based on the application evaluation value.

[0009] In some embodiments of the present application, generating an operation evaluation value of a corresponding monitoring point according to the comparison result includes:

[0010] Obtaining the chloride ion concentration and slurry temperature at each monitoring point at a preset time interval within the current monitoring period, and obtaining the degree of fluctuation of the chloride ion concentration and the slurry concentration;

[0011] The real-time chloride ion concentration and slurry temperature of each monitoring point are compared with the standard chloride ion concentration and the standard slurry temperature range, respectively, to obtain the real-time chloride ion concentration difference between the chloride ion concentration and the standard chloride ion concentration, and the real-time slurry temperature difference between the slurry temperature and the standard slurry temperature range;

[0012] Generate a first operation sub-evaluation value of the corresponding monitoring point according to the real-time chloride ion concentration difference;

[0013] generating a second operation sub-evaluation value of the corresponding monitoring point according to the real-time slurry temperature difference;

[0014] generating a first compensation coefficient of a first operation sub-evaluation value according to the degree of fluctuation of the chloride ion concentration;

[0015] generating a second compensation coefficient for a second operation sub-evaluation value according to the degree of fluctuation of the slurry concentration;

[0016] generating an operation evaluation value of a corresponding monitoring point according to the first operation sub-evaluation value, the second operation sub-evaluation value, the first compensation coefficient, and the second compensation coefficient;

[0017] The calculation formula of the operation evaluation value is:

[0018] P=a1×p1×b1+a2×p2×b2;

[0019] Among them, P is the operation evaluation value, a1 is the weight coefficient of the first operation sub-evaluation value, p1 is the first operation sub-evaluation value, b1 is the first compensation coefficient, a2 is the weight coefficient of the second operation sub-evaluation value, p2 is the second operation sub-evaluation value, and b2 is the second compensation coefficient.

[0020] In some embodiments of the present application, the chlorine reduction level and level characteristics of the corresponding monitoring area are obtained based on the operation evaluation values ​​of all monitoring points in the same monitoring area, including:

[0021] Compare the operation evaluation value of each monitoring point with that of the adjacent monitoring points in the same monitoring area to obtain the difference between the operation evaluation values ​​of each monitoring point and the adjacent monitoring points;

[0022] According to the difference in the operation evaluation value and the preset operation evaluation value interval of the operation evaluation value of each monitoring point and the adjacent monitoring point, the chlorine reduction level of the corresponding monitoring point and the adjacent monitoring point is set, and the chlorine reduction level includes a first-level chlorine reduction level, a second-level chlorine reduction level, and a third-level chlorine reduction level;

[0023] The chlorine reduction level area corresponding to the chlorine reduction level is determined according to the location information of the monitoring points of each chlorine reduction level, and the number of monitoring points, the location of the monitoring points and the area of ​​the area in each chlorine reduction level area are set as the level characteristics of the corresponding chlorine reduction level.

[0024] In some embodiments of the present application, a chlorine reduction control plan for each monitoring area is generated based on the chlorine reduction level and level characteristics of each monitoring area, including:

[0025] Obtain the historical chlorine reduction control log of each monitoring area, and extract the historical chlorine reduction level of the current monitoring area corresponding to each historical chlorine reduction control log, the level characteristics corresponding to the historical chlorine reduction level, the historical chlorine reduction control plan, and the historical application evaluation value of the historical chlorine reduction control plan;

[0026] Compare the historical chlorine reduction level and the level characteristics corresponding to the historical chlorine reduction level in each historical chlorine reduction control log of the same monitoring area with the chlorine reduction level and the level characteristics corresponding to the chlorine reduction level in the corresponding monitoring area to obtain the similarity between the historical chlorine reduction level and the level characteristics corresponding to the historical chlorine reduction level and the chlorine reduction level and the level characteristics corresponding to the chlorine reduction level;

[0027] If the similarity is greater than the preset similarity threshold and the historical application evaluation value of the historical chlorine reduction control plan corresponding to the historical chlorine reduction control log is greater than the preset application evaluation value threshold, the corresponding historical chlorine reduction control plan is set as the chlorine reduction control plan for the current monitoring area.

[0028] In some embodiments of the present application, the similarity calculation formula is:

[0029]

[0030] Among them, H is the similarity, g1 is the weight coefficient of the first-level chlorine reduction level, u1 is the first similarity conversion coefficient, n1 is the total number of monitoring points in the first-level chlorine reduction level area, △J1 i1is the position difference between the i1th monitoring point in the first-level chlorine reduction level area and the historical first-level chlorine reduction level area, y1 is the weight coefficient of the monitoring point location, S1 is the area of ​​the first-level chlorine reduction level area, S01 is the area of ​​the historical first-level chlorine reduction level area, y2 is the weight coefficient of the area, m1 is the total number of monitoring points in the historical first-level chlorine reduction level area, u3 is the weight coefficient of the number of monitoring points, g2 is the weight coefficient of the second-level chlorine reduction level, △J2 i2 is the position difference between the i2th monitoring point in the secondary chlorine reduction level area and the historical secondary chlorine reduction level area, S2 is the area of ​​the secondary chlorine reduction level area, S02 is the area of ​​the historical secondary chlorine reduction level area, n2 is the total number of monitoring points in the secondary chlorine reduction level area, m2 is the total number of monitoring points in the historical secondary chlorine reduction level area, g3 is the weight coefficient of the third level chlorine reduction level, △J3 i3 is the position difference between the i3th monitoring point in the third-level chlorine reduction level area and the historical third-level chlorine reduction level area, S3 is the regional area of ​​the third-level chlorine reduction level area, S03 is the regional area of ​​the historical third-level chlorine reduction level area, n3 is the total number of monitoring points in the third-level chlorine reduction level area, and m3 is the total number of monitoring points in the historical third-level chlorine reduction level area.

[0031] In some embodiments of the present application, if the similarity is not greater than a preset similarity threshold or the similarity is greater than a preset similarity threshold and the historical application evaluation value of the historical chlorine reduction control scheme corresponding to the historical chlorine reduction control log is not greater than a preset application evaluation value threshold, the historical application evaluation values ​​of the historical chlorine reduction control schemes of all historical chlorine reduction control logs of the current monitoring area are compared with the preset application evaluation value threshold, and the historical chlorine reduction control logs with historical application evaluation values ​​greater than the preset application evaluation threshold are screened out and set as the preferred chlorine reduction control logs;

[0032] The historical chlorine reduction levels and level features corresponding to the historical chlorine reduction levels of each preferred chlorine reduction control plan in the same monitoring area are used as the first training input parameter set, and the historical spraying parameters of the historical chlorine reduction control plan in the corresponding preferred chlorine reduction control log are used as the training output label set;

[0033] The historical chlorine reduction levels and level features corresponding to the historical chlorine reduction control plans in the remaining historical chlorine reduction control logs of the same monitoring area are used as the second training input parameter set, and the historical spraying parameters of the historical chlorine reduction control plans in the corresponding historical chlorine reduction control logs are used as the training output pseudo label set;

[0034] Performing semi-supervised learning training based on the first training input parameter set and the training output label set, and the second training input parameter set and the training output pseudo label set to generate a spray parameter prediction model for the current monitoring area;

[0035] The chlorine reduction level of the current monitoring area and the level characteristics corresponding to the chlorine reduction level are input into the spray parameter prediction model to obtain the predicted spray parameters, and the chlorine reduction control plan of the current monitoring area is generated based on the predicted spray parameters.

[0036] In some embodiments of the present application, obtaining the actual change characteristics at each monitoring point includes:

[0037] Control the sprinkler branches in the corresponding monitoring area according to the chlorine reduction control instructions, and set the inspection period according to the control time in the chlorine reduction control instructions;

[0038] Taking the inspection period as the time reference line, the inspection collection nodes are set according to the preset time intervals. The chloride ion concentration and slurry temperature at each monitoring point in the same monitoring area are obtained based on the inspection collection nodes, and mapped onto the time reference line to generate a change relationship diagram of the chloride ion concentration and slurry temperature in the corresponding monitoring area after the corresponding chlorine reduction control plan;

[0039] Obtain the change trend of the chloride ion concentration of all the inspection and collection nodes in the change relationship diagram, the change rate of the chloride ion concentration, and the characteristic chloride ion concentration at the last inspection and collection node, and set the change trend of the chloride ion concentration, the characteristic chloride ion concentration, and the change rate of the chloride ion concentration as the first actual change feature at the corresponding monitoring point;

[0040] Obtain the change trend of the slurry temperature of all the inspection and acquisition nodes in the change relationship diagram, the change rate of the slurry temperature, and the characteristic slurry temperature at the last inspection and acquisition node, and set the change trend of the slurry temperature, the characteristic slurry temperature, and the change rate of the slurry temperature as the second actual change characteristics at the corresponding monitoring point.

[0041] In some embodiments of the present application, the application evaluation value of the chlorine reduction control scheme corresponding to the monitoring area is generated by combining relevant monitoring parameters of multiple evaluation indicators, including:

[0042] Comparing the change trend of the first actual change characteristic of each monitoring point with the preset first standard change trend of the inspection period, obtaining the degree of deviation between the change trend of the first change characteristic and the first standard change trend, and setting a first change coefficient according to the degree of deviation;

[0043] Subtracting the characteristic chloride ion concentration in the first actual change characteristic of each monitoring point from the standard chloride ion concentration to obtain an actual chloride ion concentration difference, and setting a second variation coefficient according to the actual chloride ion concentration difference;

[0044] Predicting whether the actual chloride ion concentration after the control period is less than the standard chloride ion concentration based on the rate of change of the chloride ion concentration in the first actual change characteristic, and obtaining a predicted probability that the actual chloride ion concentration after the control period is less than the standard chloride ion concentration, and setting a first compensation coefficient based on the predicted probability;

[0045] Comparing the change trend of the second actual change characteristic of each monitoring point with the preset second standard change trend of the inspection period, obtaining the degree of deviation between the change trend of the second change characteristic and the second standard change trend, and generating a third change coefficient according to the degree of deviation;

[0046] Subtracting the characteristic slurry temperature in the second actual change characteristic of each monitoring point from the standard slurry temperature range to obtain an actual slurry temperature difference, and setting a fourth variation coefficient according to the actual slurry temperature difference;

[0047] Predicting whether the actual slurry temperature after the control time is within the standard slurry temperature range based on the rate of change of the slurry temperature in the second actual change characteristic, and obtaining a predicted probability that the actual slurry temperature after the control time is within the standard slurry temperature range, and setting a second compensation coefficient based on the predicted probability;

[0048] Pre-set multiple evaluation indicators;

[0049] Obtaining the real-time monitoring parameters of each monitoring area, calculating the degree of correlation between each real-time monitoring parameter and each evaluation indicator, and setting the real-time monitoring parameters with a correlation degree greater than a preset correlation degree threshold as the relevant monitoring parameters of the corresponding evaluation indicator;

[0050] Compare the relevant monitoring parameters at the last inspection collection node with the standard monitoring parameters of the corresponding evaluation indicators to obtain the difference between the relevant monitoring parameters;

[0051] Generate a sub-evaluation value of the corresponding evaluation indicator according to the relevant monitoring parameter difference of the relevant monitoring parameter of each evaluation indicator;

[0052] An application evaluation value of the chlorine reduction control scheme for the corresponding monitoring area is generated based on the first variation coefficient, the second variation coefficient, the third variation coefficient, the fourth variation coefficient, the first compensation coefficient, the second compensation coefficient and the sub-evaluation values ​​of all evaluation indicators.

[0053] In some embodiments of the present application, the calculation formula of the application evaluation value is:

[0054]

[0055] Among them, Z is the application evaluation value, l1 is the first application conversion coefficient, o1 is the weight coefficient of chloride ion concentration, f1 is the first variation coefficient, f1 is the second variation coefficient, c1 is the first compensation coefficient, o2 is the weight coefficient of slurry temperature, f3 is the third variation coefficient, f4 is the fourth variation coefficient, c2 is the second compensation coefficient, l2 is the second application conversion coefficient, Vr is the sub-evaluation value of the rth evaluation indicator, Dr is the weight coefficient of the rth evaluation indicator, and q is the total number of evaluation indicators.

[0056] In some embodiments of the present application, determining whether to generate a correction instruction for the chlorine reduction control plan based on the application evaluation value includes:

[0057] If the application evaluation value of the chlorine reduction control plan in the monitoring area is greater than the preset application evaluation value threshold, no correction instruction is generated for the chlorine reduction control plan in the current monitoring area;

[0058] If the application evaluation value of the chlorine reduction control plan in the monitoring area is not greater than the preset application evaluation value threshold, a correction instruction is generated for the chlorine reduction control plan in the current monitoring area.

[0059] Compared with the prior art, the filter cloth type disc dehydrator chlorine reduction device of the embodiment of the present application has the following advantages:

[0060] By setting multiple monitoring areas and monitoring points, the slurry temperature and chloride ion concentration of each monitoring point are obtained, and the operation evaluation value of the corresponding monitoring point is generated. The chlorine reduction level and level characteristics of the corresponding monitoring area are set according to the operation evaluation value. The chlorine reduction control plan of the monitoring area is determined according to the chlorine reduction level and level characteristics. The application evaluation value of the chlorine reduction control plan is generated according to the actual change characteristics and the relevant monitoring parameters of multiple evaluation indicators, and it is determined whether the chlorine reduction control plan should be revised, so as to improve the chlorine reduction efficiency of the filter cloth disc dehydrator chlorine reduction device and the quality of desulfurization gypsum. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 It is a schematic diagram of a filter cloth type disc dehydrator chlorine reduction device in a preferred embodiment of the present application. DETAILED DESCRIPTION

[0062] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0063] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0064] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0065] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0066] like Figure 1 As shown, a filter cloth type disc dehydrator chlorine reduction device according to a preferred embodiment of the present application comprises:

[0067] The first module is used to divide the filter cloth disc dehydrator into multiple monitoring areas, set multiple monitoring points for each monitoring area, and obtain the chloride ion concentration and slurry temperature at each monitoring point;

[0068] The second module is used to compare the chloride ion concentration and slurry temperature of each monitoring point with the standard chloride ion concentration and standard slurry temperature range respectively, generate the operation evaluation value of the corresponding monitoring point according to the comparison results, and obtain the chlorine reduction level and level characteristics of the corresponding monitoring area according to the operation evaluation values ​​of all monitoring points in the same monitoring area;

[0069] The third module is used to generate a chlorine reduction control plan for the corresponding monitoring area based on the chlorine reduction level and level characteristics of each monitoring area, and generate a chlorine reduction control instruction for the corresponding monitoring area based on the chlorine reduction control plan;

[0070] The fourth module is used to obtain the actual change characteristics at each monitoring point, and combine the relevant monitoring parameters of multiple evaluation indicators to generate an application evaluation value of the chlorine reduction control plan for the corresponding monitoring area, and determine whether to generate a correction instruction for the chlorine reduction control plan based on the application evaluation value.

[0071] In this embodiment, the chlorine reduction control scheme includes the spray parameters of the spray branches involved in the corresponding monitoring area, and the spray parameters include spray angle, spray temperature, spray duration and spray flow rate. The evaluation indicators include desulfurization efficiency, gypsum quality and energy consumption. The relevant monitoring parameters refer to monitoring parameters whose correlation degree with each evaluation indicator is greater than the preset correlation degree. For example, gypsum crystallization strength, gypsum crystallization fineness and gypsum crystallization uniformity are all relevant monitoring parameters of gypsum quality.

[0072] In this embodiment, the chlorine reduction device for a filter cloth type disc dehydrator refers to adding a filter cake washing and chlorine reduction device to the filter cloth type disc dehydrator. The filter cake washing and chlorine reduction device includes a pipeline pressure water pump, multiple spray branches, and the spray branches are equipped with ball valves and atomizing nozzles. The spray branches spray and wash the filter cake of the disc dehydrator, and control the slurry temperature in the disc dehydrator tank within the range of 45°C-55°C, thereby effectively controlling the purity of the gypsum. By controlling the spray temperature and water washing, the controllable optimization of the gypsum quality can be guaranteed. Industrial water from the power plant is extracted to wash the gypsum during the dehydration process, thereby improving the quality of gypsum production by reducing the chloride ion concentration.

[0073] In some embodiments of the present application, generating an operation evaluation value of a corresponding monitoring point according to the comparison result includes:

[0074] Obtaining the chloride ion concentration and slurry temperature at each monitoring point at a preset time interval within the current monitoring period, and obtaining the degree of fluctuation of the chloride ion concentration and the slurry concentration;

[0075] The real-time chloride ion concentration and slurry temperature of each monitoring point are compared with the standard chloride ion concentration and the standard slurry temperature range, respectively, to obtain the real-time chloride ion concentration difference between the chloride ion concentration and the standard chloride ion concentration, and the real-time slurry temperature difference between the slurry temperature and the standard slurry temperature range;

[0076] Generate a first operation sub-evaluation value of the corresponding monitoring point according to the real-time chloride ion concentration difference;

[0077] generating a second operation sub-evaluation value of the corresponding monitoring point according to the real-time slurry temperature difference;

[0078] generating a first compensation coefficient of a first operation sub-evaluation value according to the degree of fluctuation of the chloride ion concentration;

[0079] generating a second compensation coefficient for a second operation sub-evaluation value according to the degree of fluctuation of the slurry concentration;

[0080] generating an operation evaluation value of a corresponding monitoring point according to the first operation sub-evaluation value, the second operation sub-evaluation value, the first compensation coefficient, and the second compensation coefficient;

[0081] The calculation formula of the operation evaluation value is:

[0082] P=a1×p1×b1+a2×p2×b2;

[0083] Among them, P is the operation evaluation value, a1 is the weight coefficient of the first operation sub-evaluation value, p1 is the first operation sub-evaluation value, b1 is the first compensation coefficient, a2 is the weight coefficient of the second operation sub-evaluation value, p2 is the second operation sub-evaluation value, and b2 is the second compensation coefficient.

[0084] In this embodiment, when the real-time chloride ion concentration difference is larger, the first operation sub-evaluation value is smaller, and vice versa, the first operation sub-evaluation value is larger. When the real-time slurry temperature difference is larger, the second operation sub-evaluation value is smaller, and vice versa, the second operation sub-evaluation value is larger.

[0085] In this embodiment, when the fluctuation degree of chloride ion concentration is greater, the first compensation coefficient is smaller, and vice versa. When the fluctuation degree of slurry concentration is greater, the second compensation coefficient is smaller, and vice versa. The value range of the first compensation coefficient and the second compensation coefficient is (0.75, 1).

[0086] In some embodiments of the present application, the chlorine reduction level and level characteristics of the corresponding monitoring area are obtained based on the operation evaluation values ​​of all monitoring points in the same monitoring area, including:

[0087] Compare the operation evaluation value of each monitoring point with that of the adjacent monitoring points in the same monitoring area to obtain the difference between the operation evaluation values ​​of each monitoring point and the adjacent monitoring points;

[0088] According to the difference in the operation evaluation value and the preset operation evaluation value interval of the operation evaluation value of each monitoring point and the adjacent monitoring point, the chlorine reduction level of the corresponding monitoring point and the adjacent monitoring point is set, and the chlorine reduction level includes a first-level chlorine reduction level, a second-level chlorine reduction level, and a third-level chlorine reduction level;

[0089] The chlorine reduction level area corresponding to the chlorine reduction level is determined according to the location information of the monitoring points of each chlorine reduction level, and the number of monitoring points, the location of the monitoring points and the area of ​​the area in each chlorine reduction level area are set as the level characteristics of the corresponding chlorine reduction level.

[0090] In this embodiment, a first preset operation evaluation value interval, a second preset operation evaluation value interval, and a third preset operation evaluation value interval are preset, and the first preset operation evaluation value interval < the second preset operation evaluation value interval < the third preset operation evaluation value interval.

[0091] In this embodiment, if the difference in the operation evaluation values ​​is less than the preset operation evaluation value difference threshold, and the operation evaluation values ​​are all within the first preset operation evaluation value interval, the chlorine reduction level of the corresponding monitoring point and the adjacent monitoring point is set to the first chlorine reduction level; if the difference in the operation evaluation values ​​is less than the preset operation evaluation value difference threshold, and the operation evaluation values ​​are all within the second preset operation evaluation value interval, the chlorine reduction level of the corresponding monitoring point and the adjacent monitoring point is set to the second chlorine reduction level; if the difference in the operation evaluation values ​​is less than the preset operation evaluation value difference threshold, and the operation evaluation values ​​are all within the third preset operation evaluation value interval, the chlorine reduction level of the corresponding monitoring point and the adjacent monitoring point is set to the third chlorine reduction level.

[0092] In this embodiment, the number of monitoring points, monitoring point locations and regional area within the first-level chlorine reduction level area are set as the level characteristics of the first-level chlorine reduction level, the number of monitoring points, monitoring point locations and regional area within the second-level chlorine reduction level area are set as the level characteristics of the second-level chlorine reduction level, and the number of monitoring points, monitoring point locations and regional area within the third-level chlorine reduction level area are set as the level characteristics of the third-level chlorine reduction level.

[0093] In some embodiments of the present application, a chlorine reduction control plan for each monitoring area is generated based on the chlorine reduction level and level characteristics of each monitoring area, including:

[0094] Obtain the historical chlorine reduction control log of each monitoring area, and extract the historical chlorine reduction level of the current monitoring area corresponding to each historical chlorine reduction control log, the level characteristics corresponding to the historical chlorine reduction level, the historical chlorine reduction control plan, and the historical application evaluation value of the historical chlorine reduction control plan;

[0095] Compare the historical chlorine reduction level and the level characteristics corresponding to the historical chlorine reduction level in each historical chlorine reduction control log of the same monitoring area with the chlorine reduction level and the level characteristics corresponding to the chlorine reduction level in the corresponding monitoring area to obtain the similarity between the historical chlorine reduction level and the level characteristics corresponding to the historical chlorine reduction level and the chlorine reduction level and the level characteristics corresponding to the chlorine reduction level;

[0096] If the similarity is greater than the preset similarity threshold and the historical application evaluation value of the historical chlorine reduction control plan corresponding to the historical chlorine reduction control log is greater than the preset application evaluation value threshold, the corresponding historical chlorine reduction control plan is set as the chlorine reduction control plan for the current monitoring area.

[0097] In some embodiments of the present application, the similarity calculation formula is:

[0098]

[0099] Among them, H is the similarity, g1 is the weight coefficient of the first-level chlorine reduction level, u1 is the first similarity conversion coefficient, n1 is the total number of monitoring points in the first-level chlorine reduction level area, △J1 i1 is the position difference between the i1th monitoring point in the first-level chlorine reduction level area and the historical first-level chlorine reduction level area, y1 is the weight coefficient of the monitoring point location, S1 is the area of ​​the first-level chlorine reduction level area, S01 is the area of ​​the historical first-level chlorine reduction level area, y2 is the weight coefficient of the area, m1 is the total number of monitoring points in the historical first-level chlorine reduction level area, u3 is the weight coefficient of the number of monitoring points, g2 is the weight coefficient of the second-level chlorine reduction level, △J2 i2 is the position difference between the i2th monitoring point in the secondary chlorine reduction level area and the historical secondary chlorine reduction level area, S2 is the area of ​​the secondary chlorine reduction level area, S02 is the area of ​​the historical secondary chlorine reduction level area, n2 is the total number of monitoring points in the secondary chlorine reduction level area, m2 is the total number of monitoring points in the historical secondary chlorine reduction level area, g3 is the weight coefficient of the third level chlorine reduction level, △J3 i3 is the position difference between the i3th monitoring point in the third-level chlorine reduction level area and the historical third-level chlorine reduction level area, S3 is the regional area of ​​the third-level chlorine reduction level area, S03 is the regional area of ​​the historical third-level chlorine reduction level area, n3 is the total number of monitoring points in the third-level chlorine reduction level area, and m3 is the total number of monitoring points in the historical third-level chlorine reduction level area.

[0100] In this embodiment, the value range of i1 is [0, n1], the value range of i2 is [0, n2], and the value range of i3 is [0, n3].

[0101] In some embodiments of the present application, if the similarity is not greater than a preset similarity threshold or the similarity is greater than a preset similarity threshold and the historical application evaluation value of the historical chlorine reduction control scheme corresponding to the historical chlorine reduction control log is not greater than a preset application evaluation value threshold, the historical application evaluation values ​​of the historical chlorine reduction control schemes of all historical chlorine reduction control logs of the current monitoring area are compared with the preset application evaluation value threshold, and the historical chlorine reduction control logs with historical application evaluation values ​​greater than the preset application evaluation threshold are screened out and set as the preferred chlorine reduction control logs;

[0102] The historical chlorine reduction levels and level features corresponding to the historical chlorine reduction levels of each preferred chlorine reduction control plan in the same monitoring area are used as the first training input parameter set, and the historical spraying parameters of the historical chlorine reduction control plan in the corresponding preferred chlorine reduction control log are used as the training output label set;

[0103] The historical chlorine reduction levels and level features corresponding to the historical chlorine reduction control plans in the remaining historical chlorine reduction control logs of the same monitoring area are used as the second training input parameter set, and the historical spraying parameters of the historical chlorine reduction control plans in the corresponding historical chlorine reduction control logs are used as the training output pseudo label set;

[0104] Performing semi-supervised learning training based on the first training input parameter set and the training output label set, and the second training input parameter set and the training output pseudo label set to generate a spray parameter prediction model for the current monitoring area;

[0105] The chlorine reduction level of the current monitoring area and the level characteristics corresponding to the chlorine reduction level are input into the spray parameter prediction model to obtain the predicted spray parameters, and the chlorine reduction control plan of the current monitoring area is generated based on the predicted spray parameters.

[0106] In this embodiment, semi-supervised learning training refers to the process of assisting model training and learning based on labeled training data and unlabeled training data, thereby improving the performance and generalization ability of the spray parameter prediction model, better modeling based on the structure and distribution of the unlabeled training data, and improving the accuracy of subsequent predictions of spray parameters, thereby ensuring the chlorine dechlorination efficiency and gypsum quality of the filter cloth disc dehydrator dechlorination device and reducing energy consumption.

[0107] In some embodiments of the present application, obtaining the actual change characteristics at each monitoring point includes:

[0108] Control the sprinkler branches in the corresponding monitoring area according to the chlorine reduction control instructions, and set the inspection period according to the control time in the chlorine reduction control instructions;

[0109] Taking the inspection period as the time reference line, the inspection collection nodes are set according to the preset time intervals. The chloride ion concentration and slurry temperature at each monitoring point in the same monitoring area are obtained based on the inspection collection nodes, and mapped onto the time reference line to generate a change relationship diagram of the chloride ion concentration and slurry temperature in the corresponding monitoring area after the corresponding chlorine reduction control plan;

[0110] Obtain the change trend of the chloride ion concentration of all the inspection and collection nodes in the change relationship diagram, the change rate of the chloride ion concentration, and the characteristic chloride ion concentration at the last inspection and collection node, and set the change trend of the chloride ion concentration, the characteristic chloride ion concentration, and the change rate of the chloride ion concentration as the first actual change feature at the corresponding monitoring point;

[0111] Obtain the change trend of the slurry temperature of all the inspection and acquisition nodes in the change relationship diagram, the change rate of the slurry temperature, and the characteristic slurry temperature at the last inspection and acquisition node, and set the change trend of the slurry temperature, the characteristic slurry temperature, and the change rate of the slurry temperature as the second actual change characteristics at the corresponding monitoring point.

[0112] In some embodiments of the present application, the application evaluation value of the chlorine reduction control scheme corresponding to the monitoring area is generated by combining relevant monitoring parameters of multiple evaluation indicators, including:

[0113] Comparing the change trend of the first actual change characteristic of each monitoring point with the preset first standard change trend of the inspection period, obtaining the degree of deviation between the change trend of the first change characteristic and the first standard change trend, and setting a first change coefficient according to the degree of deviation;

[0114] Subtracting the characteristic chloride ion concentration in the first actual change characteristic of each monitoring point from the standard chloride ion concentration to obtain an actual chloride ion concentration difference, and setting a second variation coefficient according to the actual chloride ion concentration difference;

[0115] Predicting whether the actual chloride ion concentration after the control period is less than the standard chloride ion concentration based on the rate of change of the chloride ion concentration in the first actual change characteristic, and obtaining a predicted probability that the actual chloride ion concentration after the control period is less than the standard chloride ion concentration, and setting a first compensation coefficient based on the predicted probability;

[0116] Comparing the change trend of the second actual change characteristic of each monitoring point with the preset second standard change trend of the inspection period, obtaining the degree of deviation between the change trend of the second change characteristic and the second standard change trend, and generating a third change coefficient according to the degree of deviation;

[0117] Subtracting the characteristic slurry temperature in the second actual change characteristic of each monitoring point from the standard slurry temperature range to obtain an actual slurry temperature difference, and setting a fourth variation coefficient according to the actual slurry temperature difference;

[0118] Predicting whether the actual slurry temperature after the control time is within the standard slurry temperature range based on the rate of change of the slurry temperature in the second actual change characteristic, and obtaining a predicted probability that the actual slurry temperature after the control time is within the standard slurry temperature range, and setting a second compensation coefficient based on the predicted probability;

[0119] Pre-set multiple evaluation indicators;

[0120] Obtaining the real-time monitoring parameters of each monitoring area, calculating the degree of correlation between each real-time monitoring parameter and each evaluation indicator, and setting the real-time monitoring parameters with a correlation degree greater than a preset correlation degree threshold as the relevant monitoring parameters of the corresponding evaluation indicator;

[0121] Compare the relevant monitoring parameters at the last inspection collection node with the standard monitoring parameters of the corresponding evaluation indicators to obtain the difference between the relevant monitoring parameters;

[0122] Generate a sub-evaluation value of the corresponding evaluation indicator according to the relevant monitoring parameter difference of the relevant monitoring parameter of each evaluation indicator;

[0123] An application evaluation value of the chlorine reduction control scheme for the corresponding monitoring area is generated based on the first variation coefficient, the second variation coefficient, the third variation coefficient, the fourth variation coefficient, the first compensation coefficient, the second compensation coefficient and the sub-evaluation values ​​of all evaluation indicators.

[0124] In this embodiment, the smaller the deviation between the change trend in the first change characteristic and the first standard change trend, the larger the first change coefficient, and vice versa. When the actual chloride ion concentration difference is smaller, the second change coefficient is larger, and vice versa. The smaller the deviation between the change trend in the second change characteristic and the second standard change trend is, the larger the third change coefficient is, and vice versa. When the actual slurry temperature difference is smaller, the fourth change coefficient is larger, and vice versa.

[0125] In this embodiment, when the actual chloride ion concentration after the control time is less than the predicted probability of the standard chloride ion concentration, the first compensation coefficient is larger, and vice versa. When the actual slurry temperature after the control time is at the predicted probability of the standard chloride ion concentration, the second compensation coefficient is larger, and vice versa. The value range of the first compensation coefficient and the second compensation coefficient is (0.8, 1.2).

[0126] In this embodiment, when the difference between the relevant monitoring parameters of each evaluation indicator is smaller, the sub-evaluation value of the corresponding evaluation indicator is larger, and vice versa.

[0127] In this embodiment, the application effect of the chlorine reduction control scheme in each monitoring area is evaluated by slurry temperature, chloride ion concentration and multiple evaluation indicators. According to the evaluation results, it is determined whether the chlorine reduction control scheme needs to be revised, so as to timely discover and adjust the corresponding spray parameters, improve the chlorine reduction efficiency and chlorine reduction effect of the filter cloth disc dehydrator chlorine reduction device, and improve the quality of desulfurization gypsum while reducing energy consumption.

[0128] In some embodiments of the present application, the calculation formula of the application evaluation value is:

[0129]

[0130] Among them, Z is the application evaluation value, l1 is the first application conversion coefficient, o1 is the weight coefficient of chloride ion concentration, f1 is the first variation coefficient, f1 is the second variation coefficient, c1 is the first compensation coefficient, o2 is the weight coefficient of slurry temperature, f3 is the third variation coefficient, f4 is the fourth variation coefficient, c2 is the second compensation coefficient, l2 is the second application conversion coefficient, Vr is the sub-evaluation value of the rth evaluation indicator, Dr is the weight coefficient of the rth evaluation indicator, and q is the total number of evaluation indicators.

[0131] In this embodiment, the first application conversion coefficient refers to converting the change characteristics of chloride ion concentration and slurry temperature obtained by the first change coefficient, the second change coefficient, the third change coefficient, the fourth change coefficient, the first compensation coefficient and the second compensation coefficient into the application effect of the chlorine reduction control scheme, and the second application conversion coefficient refers to converting the sub-evaluation values ​​of multiple evaluation indicators into the application effect of the chlorine reduction control scheme.

[0132] In some embodiments of the present application, determining whether to generate a correction instruction for the chlorine reduction control plan based on the application evaluation value includes:

[0133] If the application evaluation value of the chlorine reduction control plan in the monitoring area is greater than the preset application evaluation value threshold, no correction instruction is generated for the chlorine reduction control plan in the current monitoring area;

[0134] If the application evaluation value of the chlorine reduction control plan in the monitoring area is not greater than the preset application evaluation value threshold, a correction instruction is generated for the chlorine reduction control plan in the current monitoring area.

[0135] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present application. These improvements and replacements should also be regarded as the scope of protection of the present application.

Claims

1. A filter cloth type disc dehydrator chlorine reduction device, characterized in that: include: The first module is used to divide the filter cloth disc dehydrator into multiple monitoring areas, set multiple monitoring points for each monitoring area, and obtain the chloride ion concentration and slurry temperature of each monitoring point; The second module is used to compare the chloride ion concentration and slurry temperature of each monitoring point with the standard chloride ion concentration and standard slurry temperature range respectively, generate the operation evaluation value of the corresponding monitoring point according to the comparison result, and obtain the chlorine reduction level and level characteristics of the corresponding monitoring area according to the operation evaluation values ​​of all monitoring points in the same monitoring area; The third module is used to generate a chlorine reduction control plan for the corresponding monitoring area based on the chlorine reduction level and level characteristics of each monitoring area, and generate a chlorine reduction control instruction for the corresponding monitoring area based on the chlorine reduction control plan; The fourth module is used to obtain the actual change characteristics at each monitoring point, and combine the relevant monitoring parameters of multiple evaluation indicators to generate an application evaluation value of the chlorine reduction control plan for the corresponding monitoring area, and determine whether to generate a correction instruction for the chlorine reduction control plan based on the application evaluation value.

2. The filter cloth type disc dehydrator chlorine reduction device according to claim 1, characterized in that: Generate the operation evaluation value of the corresponding monitoring point based on the comparison results, including: Obtaining the chloride ion concentration and slurry temperature at each monitoring point at a preset time interval within the current monitoring cycle, and obtaining the degree of fluctuation of the chloride ion concentration and the slurry concentration; The real-time chloride ion concentration and slurry temperature of each monitoring point are compared with the standard chloride ion concentration and the standard slurry temperature range, respectively, to obtain the real-time chloride ion concentration difference between the chloride ion concentration and the standard chloride ion concentration, and the real-time slurry temperature difference between the slurry temperature and the standard slurry temperature range; Generate a first operation sub-evaluation value of the corresponding monitoring point according to the real-time chloride ion concentration difference; Generate a second operation sub-evaluation value of the corresponding monitoring point according to the real-time slurry temperature difference; generating a first compensation coefficient of a first operation sub-evaluation value according to the degree of fluctuation of chloride ion concentration; generating a second compensation coefficient of a second operation sub-evaluation value according to the fluctuation degree of the slurry concentration; generating an operation evaluation value of a corresponding monitoring point according to the first operation sub-evaluation value, the second operation sub-evaluation value, the first compensation coefficient, and the second compensation coefficient; The calculation formula of the operation evaluation value is: P = a1 × p1 × b1 + a2 × p2 × b2; Among them, P is the operation evaluation value, a1 is the weight coefficient of the first operation sub-evaluation value, p1 is the first operation sub-evaluation value, b1 is the first compensation coefficient, a2 is the weight coefficient of the second operation sub-evaluation value, p2 is the second operation sub-evaluation value, and b2 is the second compensation coefficient.

3. The filter cloth type disc dehydrator chlorine reduction device as claimed in claim 2, characterized in that: According to the operation evaluation values ​​of all monitoring points in the same monitoring area, the chlorine reduction level and level characteristics of the corresponding monitoring area are obtained, including: Compare the operation evaluation value of each monitoring point with that of the adjacent monitoring point in the same monitoring area to obtain the difference between the operation evaluation value of each monitoring point and the adjacent monitoring point; According to the difference in the operation evaluation value and the preset operation evaluation value interval of each monitoring point and the operation evaluation value of the adjacent monitoring point, the chlorine reduction level of the corresponding monitoring point and the adjacent monitoring point is set, and the chlorine reduction level includes a primary chlorine reduction level, a secondary chlorine reduction level and a tertiary chlorine reduction level; The chlorine reduction level area corresponding to the chlorine reduction level is determined according to the location information of the monitoring points of each chlorine reduction level, and the number of monitoring points, the location of the monitoring points and the area of ​​the area in each chlorine reduction level area are set as the level characteristics of the corresponding chlorine reduction level.

4. The filter cloth type disc dehydrator chlorine reduction device as claimed in claim 3, characterized in that: Based on the chlorine reduction level and level characteristics of each monitoring area, a chlorine reduction control plan for the corresponding monitoring area is generated, including: Obtain the historical chlorine reduction control log of each monitoring area, extract the historical chlorine reduction level of the current monitoring area corresponding to each historical chlorine reduction control log, the historical chlorine reduction level area and level characteristics corresponding to the historical chlorine reduction level, the historical chlorine reduction control plan, and the historical application evaluation value of the historical chlorine reduction control plan; Compare the historical chlorine reduction level and the level characteristics corresponding to the historical chlorine reduction level of each historical chlorine reduction control log of the same monitoring area with the chlorine reduction level and the level characteristics corresponding to the chlorine reduction level of the corresponding monitoring area to obtain the similarity between the historical chlorine reduction level and the level characteristics corresponding to the historical chlorine reduction level and the chlorine reduction level and the level characteristics corresponding to the chlorine reduction level; If the similarity is greater than the preset similarity threshold and the historical application evaluation value of the historical chlorine reduction control plan corresponding to the historical chlorine reduction control log is greater than the preset application evaluation value threshold, the corresponding historical chlorine reduction control plan is set as the chlorine reduction control plan for the current monitoring area.

5. The filter cloth type disc dehydrator chlorine reduction device as claimed in claim 4, characterized in that: The calculation formula of the similarity is: Among them, H is the similarity, g1 is the weight coefficient of the first-level chlorine reduction level, u1 is the first similarity conversion coefficient, n1 is the total number of monitoring points in the first-level chlorine reduction level area, △J1 i1 is the position difference between the i1th monitoring point in the first-level chlorine reduction level area and the historical first-level chlorine reduction level area, y1 is the weight coefficient of the monitoring point location, S1 is the area of ​​the first-level chlorine reduction level area, S01 is the area of ​​the historical first-level chlorine reduction level area, y2 is the weight coefficient of the area, m1 is the total number of monitoring points in the historical first-level chlorine reduction level area, u3 is the weight coefficient of the number of monitoring points, g2 is the weight coefficient of the second-level chlorine reduction level, △J2 i2 is the position difference between the i2th monitoring point in the secondary chlorination level area and the historical secondary chlorination level area, S2 is the area of ​​the secondary chlorination level area, S02 is the area of ​​the historical secondary chlorination level area, n2 is the total number of monitoring points in the secondary chlorination level area, m2 is the total number of monitoring points in the historical secondary chlorination level area, g3 is the weight coefficient of the third level chlorination level, △J3 i3 is the position difference between the i3th monitoring point in the third-level chlorine reduction level area and the historical third-level chlorine reduction level area, S3 is the area of ​​the third-level chlorine reduction level area, S03 is the area of ​​the historical third-level chlorine reduction level area, n3 is the total number of monitoring points in the third-level chlorine reduction level area, and m3 is the total number of monitoring points in the historical third-level chlorine reduction level area.

6. The filter cloth type disc dehydrator chlorine reduction device according to claim 5, characterized in that: If the similarity is not greater than the preset similarity threshold or the similarity is greater than the preset similarity threshold and the historical application evaluation value of the historical chlorine reduction control scheme corresponding to the historical chlorine reduction control log is not greater than the preset application evaluation value threshold, the historical application evaluation values ​​of the historical chlorine reduction control schemes of all historical chlorine reduction control logs of the current monitoring area are compared with the preset application evaluation value threshold, and the historical chlorine reduction control logs with historical application evaluation values ​​greater than the preset application evaluation value threshold are screened out and set as the preferred chlorine reduction control logs; The historical chlorine reduction level corresponding to the historical chlorine reduction control scheme in each preferred chlorine reduction control log of the same monitoring area and the level features corresponding to the historical chlorine reduction level are used as the first training input parameter set, and the historical spraying parameters of the historical chlorine reduction control scheme in the corresponding preferred chlorine reduction control log are used as the training output label set; The historical chlorination levels corresponding to the historical chlorination control schemes in the remaining historical chlorination control logs of the same monitoring area and the level features corresponding to the historical chlorination levels are used as the second training input parameter set, and the historical spraying parameters of the historical chlorination control schemes in the corresponding historical chlorination control logs are used as the training output pseudo label set; Based on the first training input parameter set and the training output label set, and the second training input parameter set and the training output pseudo label set, semi-supervised learning training is performed to generate a spray parameter prediction model for the current monitoring area; The chlorine reduction level of the current monitoring area and the level characteristics corresponding to the chlorine reduction level are input into the spray parameter prediction model to obtain the predicted spray parameters, and the chlorine reduction control plan of the current monitoring area is generated based on the predicted spray parameters.

7. The filter cloth type disc dehydrator chlorine reduction device according to claim 6, characterized in that: Obtain the actual change characteristics at each monitoring point, including: Control the spray branches in the corresponding monitoring area according to the chlorine reduction control instruction, and set the inspection period according to the control time in the chlorine reduction control instruction; Taking the inspection period as the time reference line, the inspection collection nodes are set according to the preset time intervals, and the chloride ion concentration and slurry temperature at each monitoring point in the same monitoring area are obtained based on the inspection collection nodes, and mapped to the time reference line to generate a change relationship diagram of the chloride ion concentration and slurry temperature in the corresponding monitoring area after the corresponding chlorine reduction control scheme; Obtain the change trend of the chloride ion concentration of all the inspection and collection nodes in the change relationship diagram, the change rate of the chloride ion concentration, and the characteristic chloride ion concentration at the last inspection and collection node, and set the change trend of the chloride ion concentration, the characteristic chloride ion concentration, and the change rate of the chloride ion concentration as the first actual change feature at the corresponding monitoring point; Obtain the change trend of the slurry temperature of all the inspection and collection nodes in the change relationship diagram, the change rate of the slurry temperature and the characteristic slurry temperature at the last inspection and collection node, and set the change trend of the slurry temperature, the characteristic slurry temperature and the change rate of the slurry temperature as the second actual change characteristic at the corresponding monitoring point.

8. The filter cloth type disc dehydrator chlorine reduction device according to claim 7, characterized in that: Combined with the relevant monitoring parameters of multiple evaluation indicators, the application evaluation value of the chlorine reduction control plan for the corresponding monitoring area is generated, including: Compare the change trend of the first actual change feature of each monitoring point with the preset first standard change trend of the inspection period, obtain the degree of deviation between the change trend of the first change feature and the first standard change trend, and set the first change coefficient according to the degree of deviation; Subtract the characteristic chloride ion concentration in the first actual change characteristic of each monitoring point from the standard chloride ion concentration to obtain an actual chloride ion concentration difference, and set a second variation coefficient according to the actual chloride ion concentration difference; Predicting whether the actual chloride ion concentration after the control time is less than the standard chloride ion concentration according to the change rate of the chloride ion concentration in the first actual change characteristic, and obtaining the predicted probability that the actual chloride ion concentration after the control time is less than the standard chloride ion concentration, and setting the first compensation coefficient according to the predicted probability; Comparing the change trend of the second actual change feature of each monitoring point with the preset second standard change trend of the inspection period, obtaining the degree of deviation between the change trend of the second change feature and the second standard change trend, and generating a third change coefficient according to the degree of deviation; Subtracting the characteristic slurry temperature in the second actual change characteristic of each monitoring point from the standard slurry temperature range to obtain an actual slurry temperature difference, and setting a fourth variation coefficient according to the actual slurry temperature difference; Predicting whether the actual slurry temperature after the control time is within the standard slurry temperature range according to the change rate of the slurry temperature in the second actual change characteristic, and obtaining the predicted probability that the actual slurry temperature after the control time is within the standard slurry temperature range, and setting the second compensation coefficient according to the predicted probability; Pre-set multiple evaluation indicators; Obtaining the real-time monitoring parameters of each monitoring area, calculating the correlation degree between each real-time monitoring parameter and each evaluation indicator, and setting the real-time monitoring parameters whose correlation degree is greater than a preset correlation degree threshold as the relevant monitoring parameters of the corresponding evaluation indicator; Compare the relevant monitoring parameters at the last inspection collection node with the standard monitoring parameters of the corresponding evaluation indicators to obtain the difference of the relevant monitoring parameters; Generate a sub-evaluation value of the corresponding evaluation indicator according to the relevant monitoring parameter difference of the relevant monitoring parameter of each evaluation indicator; An application evaluation value of the chlorine reduction control scheme for the corresponding monitoring area is generated based on the first variation coefficient, the second variation coefficient, the third variation coefficient, the fourth variation coefficient, the first compensation coefficient, the second compensation coefficient and the sub-evaluation values ​​of all evaluation indicators.

9. The filter cloth type disc dehydrator chlorine reduction device according to claim 8, characterized in that: The calculation formula of the application evaluation value is: Among them, Z is the application evaluation value, l1 is the first application conversion coefficient, o1 is the weight coefficient of chloride ion concentration, f1 is the first variation coefficient, f1 is the second variation coefficient, c1 is the first compensation coefficient, o2 is the weight coefficient of slurry temperature, f3 is the third variation coefficient, f4 is the fourth variation coefficient, c2 is the second compensation coefficient, l2 is the second application conversion coefficient, Vr is the sub-evaluation value of the rth evaluation indicator, Dr is the weight coefficient of the rth evaluation indicator, and q is the total number of evaluation indicators.

10. The filter cloth type disc dehydrator chlorine reduction device according to claim 9, characterized in that: Determine whether to generate a correction instruction for the chlorine reduction control plan based on the application evaluation value, including: If the application evaluation value of the chlorine reduction control scheme in the monitoring area is greater than the preset application evaluation value threshold, no correction instruction is generated for the chlorine reduction control scheme in the current monitoring area; If the application evaluation value of the chlorine reduction control plan in the monitored area is not greater than the preset application evaluation value threshold, a correction instruction is generated for the chlorine reduction control plan in the current monitored area.

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