A control method and system of a basic furnace sootblower and a wastewater incineration device

Abstract

The present application relates to a kind of control method, system and waste water incinerator of alkali furnace soot blower, its method includes: the color change of alkali furnace is analyzed, obtains the ash deposition distribution information of alkali furnace;According to ash deposition distribution information, the operating condition and structure information of alkali furnace, obtain the type and soot blowing sequence of each soot blowing position of alkali furnace soot blower;By analyzing the historical data of alkali furnace soot blowing, obtain the constraint condition of alkali furnace soot blower control under current ash deposition distribution, and using the simulation of alkali furnace soot blowing to optimize constraint condition, obtain optimal constraint condition;According to alkali furnace soot blower type, soot blowing sequence and optimal constraint condition, obtain the soot blowing strategy of alkali furnace soot blower under current ash deposition distribution, to make alkali furnace soot blower based on the soot blowing strategy soot blowing is carried out to alkali furnace, obtains optimal soot blowing condition.The present application can self-adaptively adjust the soot blowing mode of alkali furnace, reduce alkali furnace soot blower commissioning frequency and steam consumption, improve the soot blowing efficiency of alkali furnace.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of alkali furnace soot blowing control, and particularly relates to a control method and system of an alkali furnace soot blower and a wastewater incineration device. BACKGROUND

[0002] The alkali furnace soot blower is a device for removing the ash accumulated on the heating surface of the alkali furnace. The alkali furnace soot blower uses high-temperature and high-pressure steam to flow through the continuously changing rotary nozzle to be sprayed at high speed, so as to generate a large impact force to blow off the ash accumulated on the heating surface of the alkali furnace.

[0003] At present, the control program of the alkali furnace soot blower cannot be changed again after being programmed, because the program is written according to the user's requirements before the control logic is written. After the debugging is completed, the user needs to reprogram and debug by professional personnel if he wants to change the program, which consumes a long time and has a high cost. Therefore, the alkali furnace soot blower generally adopts a fixed-time and fixed-quantity program blowing mode in operation, and the running mode cannot be changed in a short time. This fixed blowing mode does not consider the actual condition of the heating surface of the boiler, and uses the fixed-time blowing mode, which causes a large amount of energy waste, and even the inappropriate blowing position and mode can cause the cavitation of the heating surface, and further shorten the service life of the alkali furnace.

[0004] Therefore, the technical personnel in the field urgently need a technical solution capable of intelligently adjusting the blowing mode of the alkali furnace soot blower. SUMMARY

[0005] (I) Technical problem to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a control method and system of an alkali furnace soot blower and a wastewater incineration device, which solves the technical problem that the blowing mode of the alkali furnace soot blower cannot be self-adaptively adjusted.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solution adopted by the present application comprises:

[0009] In a first aspect, the present application provides a control method of an alkali furnace soot blower, comprising:

[0010] obtaining the running condition information and the color change information of the current alkali furnace, and analyzing the color change information to obtain the ash accumulation distribution information of the alkali furnace;

[0011] obtaining the type of the alkali furnace soot blower and the blowing sequence of the alkali furnace soot blower of each blowing position in the alkali furnace according to the ash accumulation distribution information and the running condition information, in combination with the structure information of the alkali furnace;

[0012] The constraint condition of the alkali furnace soot blower control under the current soot distribution is obtained by analyzing historical data of the alkali furnace soot blowing, and the constraint condition is optimized by using simulation of the alkali furnace soot blowing, so that the optimal constraint condition of the alkali furnace soot blower control is obtained.

[0013] According to the alkali furnace soot blower type, the soot blowing sequence and the optimal constraint condition, the soot blowing strategy of the alkali furnace soot blower under the current soot distribution is obtained, so that the alkali furnace soot blower blows the alkali furnace based on the soot blowing strategy, and the optimal soot blowing condition is obtained.

[0014] Optionally, the running condition information and color change information of the current alkali furnace are obtained, and the color change information is analyzed to obtain the soot distribution information of the alkali furnace, including:

[0015] The running condition information and color change information of the current alkali furnace are obtained by a preset sensor;

[0016] The part of the alkali furnace where the color changes is determined as the soot part, and the color difference between the color of the soot part and the original color of the alkali furnace is compared, and the soot degree of the alkali furnace is determined according to the comparison result;

[0017] When the color difference between the color of the soot part and the original color of the alkali furnace is lower than the first color difference threshold, it is determined that the soot degree of the soot part is light soot;

[0018] When the color difference between the color of the soot part and the original color of the alkali furnace is between the first color difference threshold and the second color difference threshold, it is determined that the soot degree of the soot part is moderate soot;

[0019] When the color difference between the color of the soot part and the original color of the alkali furnace is higher than the second color difference threshold, it is determined that the soot degree of the soot part is heavy soot.

[0020] Optionally, after obtaining the running condition information and color change information of the current alkali furnace, and analyzing the color change information to obtain the soot distribution information of the alkali furnace, it further includes:

[0021] The thickness information of the soot in the soot part is obtained;

[0022] The soot degree of the soot part is corrected by traversing the soot thickness of each soot part;

[0023] When the soot thickness of the soot part is lower than the first thickness threshold, the soot degree of the soot part is lowered by one level;

[0024] When the soot thickness of the soot part is between the first thickness threshold and the second thickness threshold, the soot degree of the soot part is maintained;

[0025] When the thickness of the accumulated dust at the dust accumulation site is higher than the second thickness threshold, the degree of the accumulated dust at the dust accumulation site is adjusted by one level.

[0026] Optionally, according to the dust accumulation distribution information and the operation condition information, and in combination with the structure information of the alkali furnace, the alkali furnace soot blower type of each soot blowing position in the alkali furnace and the soot blowing sequence of the alkali furnace soot blower are obtained.

[0027] The structure information of the alkali furnace is obtained, and the structure information includes heat surface position information and flue gas flow direction information.

[0028] According to the current operation condition and the dust accumulation distribution information of the alkali furnace, and in combination with the structure information of the alkali furnace, the alkali furnace soot blower type of each soot blowing position in the alkali furnace is determined.

[0029] According to the flue gas flow direction information in the operation condition, the soot blowing flow direction of all the alkali furnace soot blowers is traversed to obtain the soot blowing sequence of the alkali furnace soot blower.

[0030] The alkali furnace soot blower includes a variable-frequency alkali furnace soot blower and a single-frequency alkali furnace soot blower.

[0031] Optionally, by analyzing historical data of alkali furnace soot blowing, constraint conditions of alkali furnace soot blower control under the current dust accumulation distribution are obtained, and the constraint conditions are optimized by simulation of the alkali furnace soot blowing to obtain optimal constraint conditions of the alkali furnace soot blower control.

[0032] The historical data of the alkali furnace soot blowing in a period of time are obtained.

[0033] Under the current dust accumulation distribution, at least two alkali furnace soot blower control schemes are extracted from the historical data for analysis to obtain constraint conditions of the alkali furnace soot blower control, including an alkali furnace operation state, a soot blowing time, a soot blowing steam pressure threshold value, and a soot blowing steam drain temperature threshold value.

[0034] By simulating the alkali furnace soot blowing action and adjusting the soot blowing steam pressure threshold value and the soot blowing steam drain temperature threshold value of the alkali furnace soot blower according to the simulation result, the optimal constraint conditions of the alkali furnace soot blower control are obtained.

[0035] Optionally, according to the alkali furnace soot blower type, the soot blowing sequence, and the optimal constraint conditions, a soot blowing strategy of the alkali furnace soot blower under the current dust accumulation distribution is obtained, so that the alkali furnace soot blower blows the alkali furnace based on the soot blowing strategy to obtain an optimal soot blowing condition.

[0036] According to the alkali furnace soot blower type and the soot blowing sequence, an initial soot blowing strategy of the alkali furnace soot blower is obtained.

[0037] adjust the initial soot-blowing strategy according to the optimal constraint condition to obtain a soot-blowing strategy of the alkali furnace soot-blower under the current soot distribution condition;

[0038] deploy the soot-blowing strategy to all alkali furnace soot-blowers to make the alkali furnace soot-blowers soot-blow the alkali furnaces based on the soot-blowing strategy to obtain an optimal soot-blowing condition.

[0039] Optionally, after the soot-blowing strategy of the alkali furnace soot-blower under the current soot distribution condition is obtained according to the alkali furnace soot-blower type, the soot-blowing sequence and the optimal constraint condition to make the alkali furnace soot-blower soot-blow the alkali furnace based on the soot-blowing strategy to obtain an optimal soot-blowing condition, the method further comprises:

[0040] obtaining a working state instruction of the alkali furnace;

[0041] when the working state instruction is a normal operation instruction, controlling all alkali furnace soot-blowers to perform cyclic soot-blowing according to the soot-blowing strategy;

[0042] when the working state instruction is an alkali furnace shutdown instruction or an alkali furnace soot-blower fault instruction, controlling all alkali furnace soot-blowers to perform single soot-blowing according to the soot-blowing strategy.

[0043] In a second aspect, an embodiment of the present application provides a control system of an alkali furnace soot-blower, comprising:

[0044] an alkali furnace soot analysis module configured to obtain running condition information and color change information of a current alkali furnace, and analyze the color change information to obtain soot distribution information of the alkali furnace;

[0045] an alkali furnace soot-blower type and soot-blowing sequence determination module configured to obtain, according to the soot distribution information and the running condition information, in combination with structure information of the alkali furnace, the alkali furnace soot-blower type of each soot-blowing position in the alkali furnace and the soot-blowing sequence of the alkali furnace soot-blower;

[0046] a control constraint condition obtaining module configured to obtain, by analyzing historical data of alkali furnace soot-blowing, a constraint condition of alkali furnace soot-blower control under the current soot distribution condition, and optimize the constraint condition by simulation of alkali furnace soot-blowing to obtain an optimal constraint condition of alkali furnace soot-blower control;

[0047] a soot-blowing strategy obtaining module configured to obtain, according to the alkali furnace soot-blower type, the soot-blowing sequence and the optimal constraint condition, a soot-blowing strategy of the alkali furnace soot-blower under the current soot distribution condition to make the alkali furnace soot-blower soot-blow the alkali furnace based on the soot-blowing strategy to obtain an optimal soot-blowing condition.

[0048] In a third aspect, an embodiment of the present application provides a waste water incineration device, comprising:

[0049] an alkali furnace;

[0050] The alkali furnace soot blower arranged on the alkali furnace comprises a variable-frequency alkali furnace soot blower and a single-frequency alkali furnace soot blower.

[0051] The controller connected with the alkali furnace and the alkali furnace soot blower respectively is used for executing the control method steps of the alkali furnace soot blower.

[0052] Optionally, the wastewater incineration device comprises a limit switch, which is arranged on the alkali furnace and connected with the alkali furnace soot blower and the controller respectively, and is used for limiting protection of the alkali furnace soot blower and obtaining position information of the alkali furnace soot blower when the alkali furnace soot blower performs the soot blowing action.

[0053] (III) Beneficial effects

[0054] The alkali furnace soot blower control method has the beneficial effects that: the alkali furnace soot blower control method comprises the technical scheme that the current alkali furnace operation condition information, color change information and structure information are comprehensively analyzed, the constraint conditions of the soot blowing control are extracted from the historical soot blowing data, the constraint conditions are optimized by using the simulation simulation of the alkali furnace soot blowing, and finally the alkali furnace soot blowing control strategy responding to the alkali furnace soot blowing in real time is obtained based on the analysis result and the optimized constraint conditions; compared with the prior art, the alkali furnace soot blowing time, the soot blowing position and the soot blowing sequence can be adaptively adjusted, the alkali furnace soot blowing operation is closer to the production situation of the alkali furnace, the alkali furnace soot blowing device operation frequency and the steam consumption can be effectively reduced, the soot blowing efficiency of the alkali furnace is improved, and manual operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 A flowchart of the alkali furnace soot blower control method provided by an embodiment of the present application is shown.

[0056] Figure 2 A GUI interface schematic diagram of the soot blower arrangement in the alkali furnace soot blowing system provided by an embodiment of the present application is shown.

[0057] Figure 3 A control parameter setting GUI interface schematic diagram of the alkali furnace soot blower provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0058] In order to better explain the present application and facilitate understanding, the present application is described in detail by specific embodiments in combination with the drawings.

[0059] Before that, in order to facilitate understanding of the technical scheme provided by the present application, some basic information related to the technical scheme of the present application is introduced first, and then the scheme of the present application can be adjusted and controlled based on the basic information.

[0060] Soda recovery boiler: a device that generates steam by absorbing the heat of high-temperature flue gas discharged from combustion.

[0061] Soda recovery: a process of recovering chemicals used in cooking.

[0062] Limit switch: the main function is to limit or detect the position of moving objects in mechanical devices to ensure that mechanical equipment operates according to the predetermined position and stroke, while providing safety protection.

[0063] Reference Figure 1 As shown in the embodiment of the present application, a control method for a soda recovery boiler soot blower is provided, which includes: obtaining the running condition information and color change information of the current soda recovery boiler, and analyzing the color change information to obtain the soot deposition distribution information of the soda recovery boiler; according to the soot deposition distribution information and the running condition information, combined with the structure information of the soda recovery boiler, the type of the soda recovery boiler soot blower and the soot blowing sequence of the soda recovery boiler soot blower at each soot blowing position are obtained; by analyzing the historical data of the soda recovery boiler soot blowing, the constraint conditions of the soda recovery boiler soot blower control under the current soot deposition distribution are obtained, and the optimal constraint conditions of the soda recovery boiler soot blower control are obtained by optimizing the constraint conditions through simulation of the soda recovery boiler soot blowing; according to the type of the soda recovery boiler soot blower, the soot blowing sequence and the optimal constraint conditions, the soot blowing strategy of the soda recovery boiler soot blower under the current soot deposition distribution is obtained, so that the soda recovery boiler soot blower blows the soda recovery boiler based on the soot blowing strategy to obtain the optimal soot blowing condition.

[0064] The embodiment uses comprehensive analysis of the running condition information, color change information and structure information of the current soda recovery boiler, extracts the constraint conditions of the soot blowing control from the historical soot blowing data, optimizes the constraint conditions through simulation of the soda recovery boiler soot blowing, and finally obtains the real-time response soda recovery boiler soot blowing control strategy based on the analysis results and the optimized constraint conditions. Compared with the prior art, it can adaptively adjust the soot blowing time, soot blowing position and soot blowing sequence of the soda recovery boiler soot blower, so that the soot blowing operation of the soda recovery boiler soot blower is closer to the production situation of the soda recovery boiler, which can effectively reduce the operation frequency and steam consumption of the soda recovery boiler soot blower, improve the soot blowing efficiency of the soda recovery boiler, and reduce manual operation.

[0065] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer, more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0066] Specifically, with reference to Figure 1As shown, the control method of the alkali furnace soot blower provided in the embodiment includes:

[0067] S100, the running condition information and the color change information of the current alkali furnace are acquired, and the color change information is analyzed to obtain the soot distribution information of the alkali furnace.

[0068] During the operation of the alkali furnace, due to the different operation of the alkali recovery process at different time periods, the running conditions of the alkali furnace at different time periods are also different, including the temperature, pressure, flue gas flow direction and soot degree in the alkali furnace hearth. Among them, the soot degree cannot be directly obtained, therefore, the color of the soot is analyzed in the embodiment, and then the soot distribution information in the alkali furnace hearth can be accurately obtained, and the soot degree of each soot position can be determined through the color difference change of different colors, so that the alkali furnace soot blower can perform accurate soot blowing action based on the soot degree, reduce the operation frequency and steam consumption of the alkali furnace soot blower, and achieve the technical effect of improving the soot blowing efficiency.

[0069] In the embodiment, step S100 includes the following sub-steps S110-S130:

[0070] S110, the running condition information and the color change information of the current alkali furnace are acquired through a preset sensor.

[0071] For example, the temperature inside the alkali furnace is measured by a temperature sensor; the pressure change inside the alkali furnace is monitored by a pressure sensor; the flow of various fluids (such as gas and liquid) in the alkali furnace is measured by a flow sensor; the concentration of harmful gases or steam that may be generated in the alkali furnace is monitored by a gas sensor; the color change inside the alkali furnace is monitored by visual detection of a camera or a color sensor.

[0072] S120, the position of the alkali furnace where the color changes is determined as a soot position, and the color difference between the color of the soot position and the original color of the alkali furnace is compared, and the soot degree of the alkali furnace is determined according to the comparison result.

[0073] S130a, when the color difference between the color of the soot position and the original color of the alkali furnace is lower than a set first color difference threshold, it is determined that the soot degree of the soot position is light soot.

[0074] S130b, when the color difference between the color of the soot position and the original color of the alkali furnace is between the first color difference threshold and a set second color difference threshold, it is determined that the soot degree of the soot position is moderate soot.

[0075] S130c, when the color difference between the color of the soot position and the original color of the alkali furnace is higher than the second color difference threshold, it is determined that the soot degree of the soot position is heavy soot.

[0076] In one specific embodiment, the image inside the alkali furnace is taken by a camera, and the color information inside the alkali furnace is obtained by image processing technology, then the color inside the alkali furnace is compared with the original color of the alkali furnace, and finally the obtained color difference value is compared with the set first color difference threshold and second color difference threshold to determine the degree of dust accumulation of each part of each alkali furnace. For example, when the color difference value is less than 0.5ΔE (ΔE is the unit of color difference value), the degree of dust accumulation of the part is light dust accumulation; when the color difference value is between 0.5ΔE and 2.0ΔE, the degree of dust accumulation of the part is moderate dust accumulation; when the color difference value is higher than 2.0ΔE, the degree of dust accumulation of the part is heavy dust accumulation.

[0077] In the present embodiment, after obtaining the degree of dust accumulation of the dust accumulation part through the color change information of the current alkali furnace, the degree of dust accumulation can also be corrected through the following steps F100-1300:

[0078] F100, obtain the thickness information of the dust accumulation in the dust accumulation part.

[0079] For example, the thickness of the dust accumulation in the dust accumulation part can be checked by ultrasonic sensors, capacitive dust detection sensors, infrared sensors and the like.

[0080] F200, traverse the dust accumulation thickness of each dust accumulation part to correct the degree of dust accumulation of the dust accumulation part.

[0081] F300a, when the dust accumulation thickness of the dust accumulation part is lower than the set first thickness threshold, the degree of dust accumulation of the dust accumulation part is lowered by one level.

[0082] F300b, when the dust accumulation thickness of the dust accumulation part is between the first thickness threshold and the set second thickness threshold, the degree of dust accumulation of the dust accumulation part is maintained.

[0083] F300c, when the dust accumulation thickness of the dust accumulation part is higher than the second thickness threshold, the degree of dust accumulation of the dust accumulation part is raised by one level.

[0084] In one specific embodiment, the first thickness threshold is set to 2mm, and the second thickness threshold is set to 4mm. When the dust accumulation part of the alkali furnace is judged to be moderate dust accumulation by color change, if the detected dust accumulation thickness is 1mm, the degree of dust accumulation of the dust accumulation part needs to be corrected to light dust accumulation; if the detected dust accumulation thickness is 5mm, the degree of dust accumulation of the dust accumulation part needs to be corrected to heavy dust accumulation.

[0085] It is worth mentioning that the color difference threshold of the set dust accumulation can not only be set as two color difference thresholds, but also can be set as more color difference thresholds in the color difference change range, so as to perform more fine grade division on the dust accumulation degree, and further improve the judgment accuracy of the dust accumulation degree. Similarly, the thickness threshold of the set dust accumulation can also be set as more thickness thresholds in the thickness change range, so as to further improve the judgment accuracy of the dust accumulation degree.

[0086] S200, according to the dust accumulation distribution information and the operation condition information, and in combination with the structure information of the alkali furnace, the type of the alkali furnace soot blower at each soot blowing position in the alkali furnace and the soot blowing sequence of the alkali furnace soot blower are obtained.

[0087] In the embodiment, the step S200 includes the following sub-steps S210-S230:

[0088] S210, the structure information of the alkali furnace is obtained, and the structure information includes the position information of the heating surface and the flue gas flow direction information.

[0089] The structure information of the alkali furnace is obtained by analyzing the engineering file of the alkali furnace, and at least the position information of the heating surface in the alkali furnace and the flue gas flow direction information are obtained.

[0090] S220, according to the current operation condition of the alkali furnace and the dust accumulation distribution information, and in combination with the structure information of the alkali furnace, the type of the alkali furnace soot blower at each soot blowing position in the alkali furnace is determined. The alkali furnace soot blower includes a variable-frequency alkali furnace soot blower and a single-frequency alkali furnace soot blower.

[0091] In a specific embodiment, for the alkali furnace with 26 soot blowing positions as shown in Figure 2 , when the operation condition is stable within a certain range, the single-frequency alkali furnace soot blower is selected to perform soot blowing, when the operation condition is out of the range, the variable-frequency alkali furnace soot blower is selected to perform soot blowing, and when the soot blowing position does not have dust accumulation or has light dust accumulation, no alkali furnace soot blower is selected to perform soot blowing at the soot blowing position. Moreover, the working position of the alkali furnace soot blower is in the alkali furnace hearth, and since the temperature of the alkali furnace hearth is very high, the corresponding type of alkali furnace soot blower is pushed into the soot blowing position in the alkali furnace hearth only when the alkali furnace soot blower needs to work, the alkali furnace soot blower is returned to the starting position through reverse rotation after completing the soot blowing work.

[0092] S230, according to the flue gas flow direction information in the operation condition, the soot blowing flow direction of all the alkali furnace soot blowers is traversed, and the soot blowing sequence of the alkali furnace soot blower is obtained.

[0093] In a specific embodiment, for the alkali furnace with 26 soot blowing positions as shown in Figure 2 , according to the flue gas flow direction information in the operation condition, after traversing the soot blowing flow direction of all the alkali furnace soot blowers, the soot blowing sequence of the alkali furnace soot blower as shown in Figure 3 is obtained, and specifically,Figure 3 The soot-blowing sequence of the alkali furnace soot-blower is represented by a table, for example, 2 in the first row and the first column represents that the second alkali furnace soot-blower performs the first soot-blowing action, 26 in the first row and the sixth column represents that the twenty-sixth alkali furnace soot-blower performs the sixth soot-blowing action, and 25 in the second row and the third column represents that the twenty-fifth alkali furnace soot-blower performs the thirteenth soot-blowing action.

[0094] S300, by analyzing the historical data of alkali furnace soot-blowing, obtaining the constraint condition of alkali furnace soot-blower control under the current soot deposition distribution, and optimizing the constraint condition by simulation of alkali furnace soot-blowing to obtain the optimal constraint condition of alkali furnace soot-blower control.

[0095] In this embodiment, step S300 includes the following sub-steps S310-S330:

[0096] S310, obtaining the historical data of alkali furnace soot-blowing in a period of time.

[0097] S320, under the current soot deposition distribution, extracting at least two alkali furnace soot-blower control schemes from the historical data for analysis to obtain the constraint condition of alkali furnace soot-blower control including the alkali furnace operating state, soot-blowing time, soot-blowing steam pressure threshold and soot-blowing steam trap temperature threshold.

[0098] S330, by simulating the alkali furnace soot-blowing action and adjusting the soot-blowing steam pressure threshold and the soot-blowing steam trap temperature threshold of the alkali furnace soot-blower according to the simulation result, the optimal constraint condition of alkali furnace soot-blower control is obtained.

[0099] In one specific embodiment, according to the soot deposition distribution in the current alkali furnace, at least two alkali furnace soot-blower control schemes are extracted from the historical data of alkali furnace soot-blowing in a month for analysis to obtain the constraint condition of alkali furnace operating state, including: the alkali furnace is normally operated, the alkali furnace is not water-washed, and the steam supply valve of the alkali furnace soot-blower is normally opened; the constraint condition of soot-blowing time is 90 seconds; the soot-blowing steam pressure threshold and the soot-blowing steam trap temperature threshold are obtained by simulation of the alkali furnace soot-blowing action, which are 120 bar and 200℃ respectively. In this embodiment, by extracting the soot-blowing control constraint condition from the historical soot-blowing data and optimizing the constraint condition by simulation of alkali furnace soot-blowing, the optimal control constraint of the alkali furnace soot-blower is obtained, which can effectively reduce the frequency of putting the alkali furnace soot-blower into operation and the steam consumption, improve the heat transfer efficiency of the alkali furnace, and reduce the flue gas temperature of the alkali furnace, thereby realizing energy saving and consumption reduction of the unit.

[0100] S400, according to the type of alkali furnace soot-blower, the soot-blowing sequence and the optimal constraint condition, obtaining the soot-blowing strategy of the alkali furnace soot-blower under the current soot deposition distribution, so that the alkali furnace soot-blower soots the alkali furnace based on the soot-blowing strategy to obtain the optimal soot-blowing condition.

[0101] In the embodiment, the step S400 comprises the following sub-steps S410-S430:

[0102] S410, according to the type of alkali furnace soot blower and the blowing sequence, an initial blowing strategy of the alkali furnace soot blower is obtained.

[0103] S420, the initial blowing strategy is adjusted according to the optimal constraint condition to obtain the blowing strategy of the alkali furnace soot blower under the current soot deposition distribution.

[0104] The initial blowing strategy is adjusted according to the optimal constraint condition, and the main adjustment parameters are the blowing time and the variable frequency speed of the variable frequency alkali furnace soot blower. The parameter setting can be referred to as shown in the accompanying drawings. The variable frequency speed of the variable frequency alkali furnace soot blower is mainly adjusted according to the blowing steam pressure and the blowing steam drain temperature. Figure 3

[0105] S430, the blowing strategy is deployed to all alkali furnace soot blowers, so that the alkali furnace soot blower blows the alkali furnace based on the blowing strategy to obtain the optimal blowing condition.

[0106] In the embodiment, after the step S400, the following sub-steps S510-S520 are further included:

[0107] S510, an operating state instruction of the alkali furnace is obtained.

[0108] S520a, when the operating state instruction is a normal operation instruction, then all alkali furnace soot blowers are controlled to perform cyclic blowing according to the blowing strategy.

[0109] S520b, when the operating state instruction is an alkali furnace shutdown instruction or an alkali furnace soot blower fault instruction, then all alkali furnace soot blowers are controlled to perform single blowing according to the blowing strategy.

[0110] In addition, the embodiment of the present application further provides a control system of alkali furnace soot blower, comprising:

[0111] An alkali furnace soot deposition analysis module is configured to obtain the running condition information and color change information of the current alkali furnace, analyze the color change information, and obtain the soot deposition distribution information of the alkali furnace.

[0112] An alkali furnace soot blower type and blowing sequence determination module is configured to obtain the type of alkali furnace soot blower and the blowing sequence of the alkali furnace soot blower at each blowing position in the alkali furnace according to the soot deposition distribution information and the running condition information, and in combination with the structural information of the alkali furnace.

[0113] ​The control constraint obtaining module is used for obtaining the control constraint of the alkali furnace soot blower under the current soot distribution by analyzing the historical data of the alkali furnace soot blowing, and optimizing the constraint condition by using the simulation of the alkali furnace soot blowing to obtain the optimal constraint condition of the alkali furnace soot blower control.

[0114] The soot blowing strategy obtaining module is used for obtaining the soot blowing strategy of the alkali furnace soot blower under the current soot distribution according to the type of the alkali furnace soot blower, the soot blowing sequence and the optimal constraint condition, so that the alkali furnace soot blower blows the alkali furnace based on the soot blowing strategy to obtain the optimal soot blowing condition.

[0115] In addition, the embodiment of the present application also provides a wastewater incineration device, which comprises: an alkali furnace; an alkali furnace soot blower arranged on the alkali furnace, wherein the alkali furnace soot blower comprises a variable-frequency alkali furnace soot blower and a single-frequency alkali furnace soot blower; and a controller connected with the alkali furnace and the alkali furnace soot blower respectively, wherein the controller is used for executing the steps of the control method of the alkali furnace soot blower.

[0116] The wastewater incineration device further comprises: a limit switch; the limit switch is arranged on the alkali furnace and connected with the alkali furnace soot blower and the controller respectively, and is used for limiting and protecting the alkali furnace soot blower when the alkali furnace soot blower performs the soot blowing action and obtaining the position information of the alkali furnace soot blower.

[0117] In summary, the embodiment of the present application provides a control method and system of the alkali furnace soot blower and a wastewater incineration device, wherein the control method comprises the following steps: firstly, the soot distribution information of the current alkali furnace, the type of the alkali furnace soot blower at each soot blowing position and the soot blowing sequence of the alkali furnace soot blower are obtained by comprehensively analyzing the running condition information, the color change information and the structure information of the current alkali furnace; then, the soot blowing control constraint condition is extracted from the historical soot blowing data, and the constraint condition is optimized by using the simulation of the alkali furnace soot blowing; finally, the alkali furnace soot blower control strategy for responding to the alkali furnace soot blowing in real time is generated based on the analysis result and the optimized constraint condition, and the soot blowing cycle number of the alkali furnace soot blower is obtained according to the working state instruction of the alkali furnace. The alkali furnace soot blower blowing time, the soot blowing position and the soot blowing sequence can be adaptively adjusted, so that the soot blowing operation of the alkali furnace soot blower is closer to the production situation of the alkali furnace, the frequency of putting the alkali furnace soot blower into operation and the steam consumption can be effectively reduced, the soot blowing efficiency of the alkali furnace is improved, and the manual operation is reduced.

[0118] The system / device used for implementing the method of the above-mentioned embodiments of the present application is described in the above-mentioned embodiments of the present application, and the specific structure and modification of the system / device can be understood by those skilled in the art based on the method described in the above-mentioned embodiments of the present application, and thus will not be described here. The system / device used for the method of the above-mentioned embodiments of the present application belongs to the scope of the present application.

[0119] Those skilled in the art will appreciate that embodiments of the present application can be devised for a variety of other systems which are currently developed or later developed. Those skilled in the art will appreciate that the application can provide, among other things, a method, a system, or a computer program product. Accordingly, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, and the like) embodying computer readable program code.

[0120] The present application is described in reference to the flowchart and / or block diagram illustrations of the method, apparatus (system) and computer program product according to embodiments of the application. It will be understood that each block of the flowchart and / or block diagrams, and combinations of blocks in the flowchart and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions of the flowchart and / or block diagrams.

[0121] It should be noted that the use of the terms "one" and "an" herein does not exclude a plurality, and "a" or "an" means "at least one". The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. The use of the terms first, second, third, etc., does not imply any ordering, but is used for the purpose of naming. The terms "comprising", "comprise", "comprised of" and "comprising" when used in this specification are taken to specify the presence of stated features, integers, steps or components but do not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

[0122] In addition, it should be pointed out that the terms "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" and the like, in the description of the specification, mean that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the present application. Illustrative representations of the above terms in the specification do not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, different embodiments or examples described in the specification can be combined and combined with features of other embodiments or examples, without mutual contradiction.

[0123] Although preferred embodiments of the application have been described, those skilled in the art will appreciate that additional modifications and variations to the described embodiments are possible in light of the above teachings.

[0124] It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application.

Claims

1. A control method of a basic boiler sootblower, characterized by, The method comprises the following steps: acquiring the running condition information and color change information of the current alkali furnace, and analyzing the color change information to obtain the ash deposition distribution information of the alkali furnace, comprising: acquiring the running condition information and color change information of the current alkali furnace through a preset sensor; determining the part of the alkali furnace where the color changes as the ash deposition part, and comparing the color difference between the color of the ash deposition part and the original color of the alkali furnace, and judging the ash deposition degree of the alkali furnace according to the comparison result; when the color difference between the color of the ash deposition part and the original color of the alkali furnace is lower than a set first color difference threshold, it is determined that the ash deposition degree of the ash deposition part is light ash deposition; when the color difference between the color of the ash deposition part and the original color of the alkali furnace is between the first color difference threshold and a set second color difference threshold, it is determined that the ash deposition degree of the ash deposition part is moderate ash deposition; when the color difference between the color of the ash deposition part and the original color of the alkali furnace is higher than the second color difference threshold, it is determined that the ash deposition degree of the ash deposition part is heavy ash deposition; According to the ash deposition distribution information and the running condition information, combined with the structure information of the alkali furnace, the type of the alkali furnace soot blower and the soot blowing sequence of the alkali furnace soot blower at each soot blowing position in the alkali furnace are obtained; By analyzing the historical data of the alkali furnace soot blowing, the constraint condition of the alkali furnace soot blower control under the current ash deposition distribution is obtained, and the constraint condition is optimized by using the simulation of the alkali furnace soot blowing to obtain the optimal constraint condition of the alkali furnace soot blower control; According to the type of the alkali furnace soot blower, the soot blowing sequence and the optimal constraint condition, the soot blowing strategy of the alkali furnace soot blower under the current ash deposition distribution is obtained, so that the alkali furnace soot blower blows the alkali furnace based on the soot blowing strategy to obtain the optimal soot blowing condition.

2. The method of claim 1, wherein, After acquiring the running condition information and color change information of the current alkali furnace, and analyzing the color change information to obtain the ash deposition distribution information of the alkali furnace, the method further comprises the following steps: acquiring the thickness information of the ash deposition in the ash deposition part; iterating the ash deposition thickness of each ash deposition part to correct the ash deposition degree of the ash deposition part; when the ash deposition thickness of the ash deposition part is lower than a set first thickness threshold, the ash deposition degree of the ash deposition part is lowered by one level; when the ash deposition thickness of the ash deposition part is between the first thickness threshold and a set second thickness threshold, the ash deposition degree of the ash deposition part is maintained; when the ash deposition thickness of the ash deposition part is higher than the second thickness threshold, the ash deposition degree of the ash deposition part is raised by one level.

3. The method of claim 1, wherein, According to the ash deposition distribution information and the running condition information, combined with the structure information of the alkali furnace, the type of the alkali furnace soot blower and the soot blowing sequence of the alkali furnace soot blower at each soot blowing position in the alkali furnace are obtained, comprising: acquiring the structure information of the alkali furnace, the structure information comprising the position information of the heating surface and the flue gas flow direction information; determining the type of the alkali furnace soot blower at each soot blowing position in the alkali furnace according to the running condition and the ash deposition distribution information of the current alkali furnace, combined with the structure information of the alkali furnace; according to the flue gas flow direction information in the running condition, iterating the soot blowing flow direction of all the alkali furnace soot blowers to obtain the soot blowing sequence of the alkali furnace soot blower; wherein the alkali furnace soot blower comprises a variable frequency alkali furnace soot blower and a single frequency alkali furnace soot blower.

4. The method of claim 1, wherein, Obtaining the constraint condition of the alkali furnace soot blower control under the current soot distribution by analyzing the historical data of the alkali furnace soot blowing, and optimizing the constraint condition by simulation of the alkali furnace soot blowing, and obtaining the optimal constraint condition of the alkali furnace soot blower control, including: Obtaining the historical data of the alkali furnace soot blowing in a period of time; Under the current soot distribution, extracting at least two alkali furnace soot blower control schemes from the historical data for analysis to obtain the constraint condition of the alkali furnace soot blower control, including the alkali furnace operating state, soot blowing time, soot blowing steam pressure threshold and soot blowing steam trap temperature threshold; By simulating the alkali furnace soot blowing action and adjusting the soot blowing steam pressure threshold and soot blowing steam trap temperature threshold of the alkali furnace soot blower according to the simulation results, the optimal constraint condition of the alkali furnace soot blower control is obtained.

5. The method of claim 1, wherein, According to the type of the alkali furnace soot blower, the soot blowing sequence and the optimal constraint condition, the soot blowing strategy of the alkali furnace soot blower under the current soot distribution is obtained, so that the alkali furnace soot blower blows the alkali furnace based on the soot blowing strategy to obtain the optimal soot blowing condition, including: According to the type of the alkali furnace soot blower and the soot blowing sequence, the initial soot blowing strategy of the alkali furnace soot blower is obtained; According to the optimal constraint condition, the initial soot blowing strategy is adjusted to obtain the soot blowing strategy of the alkali furnace soot blower under the current soot distribution; The soot blowing strategy is deployed to all alkali furnace soot blowers so that the alkali furnace soot blower blows the alkali furnace based on the soot blowing strategy to obtain the optimal soot blowing condition.

6. The method according to any one of claims 1 to 5, characterized in that, After obtaining the soot blowing strategy of the alkali furnace soot blower under the current soot distribution according to the type of the alkali furnace soot blower, the soot blowing sequence and the optimal constraint condition, so that the alkali furnace soot blower blows the alkali furnace based on the soot blowing strategy to obtain the optimal soot blowing condition, including: Obtaining the working state instruction of the alkali furnace; When the working state instruction is the normal operation instruction, all alkali furnace soot blowers are controlled to perform cyclic soot blowing according to the soot blowing strategy; When the working state instruction is the alkali furnace shutdown instruction or the alkali furnace soot blower fault instruction, all alkali furnace soot blowers are controlled to perform single soot blowing according to the soot blowing strategy.

7. A control system for a basic boiler sootblower, characterized by Including: The alkali furnace soot analysis module is used to obtain the running condition information and color change information of the current alkali furnace, and analyze the color change information to obtain the soot distribution information of the alkali furnace, including: obtaining the running condition information and color change information of the current alkali furnace through the preset sensor; determining the part of the alkali furnace where the color changes as the soot part, and comparing the color of the soot part with the original color of the alkali furnace, and judging the soot degree of the alkali furnace according to the comparison result; when the color difference between the color of the soot part and the original color of the alkali furnace is lower than the set first color difference threshold, it is determined that the soot degree of the soot part is light soot; when the color difference between the color of the soot part and the original color of the alkali furnace is between the first color difference threshold and the set second color difference threshold, it is determined that the soot degree of the soot part is moderate soot; when the color difference between the color of the soot part and the original color of the alkali furnace is higher than the second color difference threshold, it is determined that the soot degree of the soot part is heavy soot; The alkali furnace soot blower type and soot blowing sequence determination module is used for obtaining the alkali furnace soot blower type and the soot blowing sequence of each soot blowing position in the alkali furnace according to the soot accumulation distribution information, the operation condition information and the structure information of the alkali furnace; The control constraint condition acquisition module is used for obtaining the constraint condition of the alkali furnace soot blower control under the current soot accumulation distribution by analyzing the historical data of the alkali furnace soot blowing, and optimizing the constraint condition by using the simulation of the alkali furnace soot blowing to obtain the optimal constraint condition of the alkali furnace soot blower control; The soot blowing strategy acquisition module is used for obtaining the soot blowing strategy of the alkali furnace soot blower under the current soot accumulation distribution according to the alkali furnace soot blower type, the soot blowing sequence and the optimal constraint condition, so that the alkali furnace soot blower blows the alkali furnace based on the soot blowing strategy to obtain the optimal soot blowing condition.

8. A waste water incineration apparatus characterized by comprising: It comprises: An alkali furnace; An alkali furnace soot blower arranged on the alkali furnace, wherein the alkali furnace soot blower comprises a variable-frequency alkali furnace soot blower and a single-frequency alkali furnace soot blower; A controller connected with the alkali furnace and the alkali furnace soot blower respectively, wherein the controller is used for executing the control method steps of the alkali furnace soot blower according to any one of claims 1-6.

9. The apparatus of claim 8, wherein, It comprises: A limit switch arranged on the alkali furnace and connected with the alkali furnace soot blower and the controller respectively, wherein the limit switch is used for limiting and protecting the alkali furnace soot blower when the alkali furnace soot blower executes the soot blowing action and obtaining the position information of the alkali furnace soot blower.

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