CN112325329A - High-temperature corrosion prevention boiler air door opening control method and system - Google Patents
High-temperature corrosion prevention boiler air door opening control method and system Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
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- F23N2223/00—Signal processing; Details thereof
- F23N2223/44—Optimum control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
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- F23N2233/00—Ventilators
Abstract
The invention discloses a high-temperature corrosion prevention boiler air door opening control method and system, wherein the method comprises the steps of respectively arranging a plurality of CO measuring points on a corrosion prone area on a boiler hearth and at an outlet of an economizer; establishing a parameter prediction model of the boiler; establishing a data set of the opening degree of the air door; substituting the real-time operation data of the boiler into a parameter prediction model, and calculating to obtain a parameter prediction value of the boiler under each optimized value of a wind door opening data set; calculating the real-time boiler efficiency of the boiler; and comparing the boiler parameter predicted value under each optimized value of the air door opening data set with the real-time boiler efficiency of the boiler, the concentration of NOx at the inlet of the real-time SCR denitration system of the boiler and the real-time CO concentration at each CO measuring point, and adjusting the opening of the air door of the boiler. The invention provides a high-temperature corrosion prevention boiler air door opening control method and system, and provides a current air door opening suggestion according to real-time operation conditions.
Description
Technical Field
The invention relates to the field of power station boiler combustion optimization and automatic control. More particularly, the invention relates to a method and a system for controlling the opening of a boiler air door for preventing high-temperature corrosion.
Background
The coal-fired boiler is the most important component of thermal power generation, and the performance of the coal-fired boiler directly influences the operation of a coal-fired power plant. The coal-fired boiler generally has serious high-temperature corrosion, which causes the corrosion of water-cooled wall steel, and leads to the tube explosion of the water-cooled wall in serious conditions, thereby directly influencing the high-efficiency safe continuous operation of a coal-fired power plant, and the prevention of the high-temperature corrosion of the coal-fired boiler is very important. In general, high temperature corrosion of boiler and H in furnace2The S concentration is directly related, but the direct measurement is influenced by the severe high-temperature environment in the furnace. The existing research shows that H in the boiler2The S concentration and the CO concentration have strong positive correlation, and the CO on-line detection equipment enters into commercial production nowadays, but at present, no efficient fine intelligent method exists for monitoring and adjusting the operation of a boiler to carry out high-temperature corrosion by using CO in a hearth. The invention patent CN105605563A discloses a device and a method for monitoring and controlling high-temperature corrosion of a wall type tangential boiler water wall, but only proposes to install a CO sensor inside a hearth, and simply adjust the opening of an air door near a part with high CO concentration according to human experience. The invention patent CN109595586A discloses a combustion optimization method and a system for preventing high-temperature corrosion of a boiler based on CO on-line detection, but only provides a CO arrangement principle, and provides a limited air door adjusting method according to experience and experiments. Therefore, both of the two methods are mainly adjusted according to limited experience and experiments, and the operation data of the boiler is not fully mined to efficiently adjust and control the high-temperature corrosion. Furthermore, smart power plants have become a current development trend, and the operation of power plants tends to be efficient, fine and intelligent, so that intelligent high-temperature corrosion prevention methods and strategies based on boiler big data are urgently needed to be developed.
Disclosure of Invention
The invention aims to provide a high-temperature corrosion prevention boiler air door opening control method and system, and aims to fully excavate historical operation data of a boiler, intelligently give a current air door opening suggestion aiming at real-time operation conditions, improve high-temperature corrosion of the boiler and improve the economy and safety of a power plant.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a method for controlling a degree of opening of a boiler damper against high temperature corrosion, comprising:
respectively arranging a plurality of CO measuring points on a corrosion prone area on a boiler hearth and at an outlet of an economizer to obtain real-time CO concentration at each position;
establishing a parameter prediction model of the boiler according to historical operating data of the boiler;
establishing an air door opening data set, wherein the air door is a secondary air door, and the opening data set comprises a plurality of optimized values A of all the air door openingsijI is 1, 2, … and m, j is the number of the secondary air door of the target boiler, j is 1, 2, … and n, m and n are positive integers, and | A0j-Aij| < 10%, wherein A0jIs the current opening degree of the air door, and is more than or equal to 0 and less than or equal to Aij≤100％；
Substituting the real-time operation data of the boiler into the parameter prediction model, and calculating to obtain a boiler efficiency prediction value of the boiler, a NOx concentration prediction value at an inlet of an SCR (selective catalytic reduction) denitration system of the boiler and a CO concentration prediction value at each CO measuring point under each optimized value of the air door opening data set;
calculating the real-time boiler efficiency of the boiler according to the real-time operation data of the boiler;
and comparing the boiler efficiency predicted value, the NOx concentration predicted value at the inlet of the boiler SCR denitration system and the CO concentration predicted value at each CO measuring point under each optimized value of the air door opening data set with the real-time boiler efficiency of the boiler, the NOx concentration at the inlet of the boiler real-time SCR denitration system and the real-time CO concentration at each CO measuring point respectively, and adjusting the opening of the air door of the boiler.
Preferably, in the method for controlling the opening of the air door of the boiler for preventing high-temperature corrosion, the historical operating data of the boiler and the real-time operating data of the boiler both comprise boiler load, coal quality parameters, boiler coal feeding quantity, the opening of each air door of the boiler, carbon content of fly ash and bottom slag, tail CO concentration, tail oxygen quantity and exhaust gas temperature.
Preferably, in the method for controlling the opening of the boiler damper for preventing high temperature corrosion, when a parameter prediction model of the boiler is established, the method includes:
adopting a neural network model to construct a parameter prediction initial model of the boiler;
and acquiring historical boiler operation data in a period of time, CO concentration of each CO measuring point, NOx concentration at an inlet of a boiler SCR denitration system and boiler efficiency, inputting the historical boiler operation data serving as an input sample, and the CO concentration of each CO measuring point, the NOx concentration at the inlet of the boiler SCR denitration system and the boiler efficiency serving as expected outputs into the parameter prediction initial model for training to obtain the parameter prediction model.
Preferably, in the method for controlling the opening of the damper of the boiler to prevent high-temperature corrosion, when the opening of each damper of the boiler is adjusted, the method includes:
calculating the average value of the CO concentration in the current boiler furnace and the average value of the CO concentration in the boiler furnace under each optimized value of the air door opening data set, if the average value of the CO concentration in the boiler furnace under each optimized value of the air door opening data set is larger than the average value of the CO concentration in the current boiler furnace, maintaining the current opening of the air door unchanged, and otherwise, selecting all air door opening optimized values corresponding to the average value of the CO concentration in the boiler furnace, which are not larger than the average value of the CO concentration in the current boiler furnace, to form a first data set;
comparing the boiler efficiency predicted value under each optimized value of the first data set with the real-time boiler efficiency of the boiler, if the boiler efficiency predicted value under each optimized value of the first data set is smaller than the real-time boiler efficiency of the boiler, selecting the optimized value corresponding to the maximum boiler efficiency predicted value as the opening of the air door, and otherwise, selecting all the air door opening optimized values corresponding to the boiler efficiency predicted values which are not smaller than the real-time boiler efficiency of the boiler to form a second data set;
comparing the concentration predicted value of NOx at the inlet of the boiler SCR denitration system under each predicted value of the second data set with the concentration of NOx at the inlet of the real-time SCR denitration system of the boiler, if the concentration predicted value of NOx at the inlet of the boiler SCR denitration system under each optimized value of the second data set is greater than the concentration of NOx at the inlet of the real-time SCR denitration system of the boiler, selecting the optimized value corresponding to the minimum concentration predicted value of NOx at the inlet of the boiler SCR denitration system as the opening degree of the air door, and otherwise, selecting all the optimized values of the opening degree of the air door corresponding to the NOx concentration predicted value at the inlet of the boiler SCR denitration system, which are not greater than the concentration of NOx at the inlet of the real-;
and calculating the average value of the CO concentration in the boiler furnace under each predicted value of the third data set, and selecting the air door opening degree optimized value corresponding to the minimum average value of the CO concentration in the boiler furnace as the target opening degree of the air door.
Preferably, in the method for controlling the opening degree of the boiler damper for preventing high-temperature corrosion, aijThe method comprises the following steps: a. the0j、A0j±10％、A0jAll combinations of 5%.
Preferably, in the method for controlling the opening of the high-temperature corrosion-resistant boiler damper, the main combustion area and the burnout area in the boiler furnace respectively have at least one CO measuring point.
Preferably, in the method for controlling the opening of the boiler damper for preventing high-temperature corrosion, at least two CO measuring points are arranged at the outlet of the economizer.
The invention also provides a high-temperature corrosion prevention boiler air door opening control system, and the boiler air door opening control method comprises a controller, a processor and a display device, wherein the controller is electrically connected with the control system of the boiler, and the controller and the display device are respectively electrically connected with the processor.
Preferably, the system for controlling the opening degree of the boiler damper for preventing high-temperature corrosion further comprises a storage device, and the storage device is electrically connected with the processor.
Preferably, in the system for controlling the opening degree of the boiler damper for preventing high-temperature corrosion, the controller is a DCS controller.
The invention provides a high-temperature corrosion prevention boiler air door opening control method and system aiming at the problem that the existing high-temperature corrosion combustion optimization method for a coal-fired power station boiler is low in efficiency and rough, based on the historical data of long-term operation of the boiler, a supervised self-learning neural network method is used for training and learning deep digging operation data rules, specific air door suggestions are given according to real-time operation conditions, the high-temperature corrosion of the boiler is improved, meanwhile, the boiler efficiency is improved, the generation of nitrogen oxides is reduced, and the automation degree and the economical efficiency of the operation of the power station boiler are greatly improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a flow chart illustrating a method for controlling the opening of a boiler damper for preventing high temperature corrosion according to the present invention;
FIG. 2 is a block diagram of a parametric prediction model according to the present invention;
FIG. 3 is a schematic diagram of the installation location of CO measurement points in the boiler according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a boiler damper opening control system for preventing high temperature corrosion according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-2, an embodiment of the present invention provides a method for controlling a degree of opening of a boiler damper for preventing high-temperature corrosion, including:
s1, respectively arranging a plurality of CO measuring points on a corrosion prone area on a boiler furnace and at an outlet of an economizer to obtain the real-time CO concentration of each CO measuring point; the main combustion area and the burnout area in a hearth of the boiler are respectively provided with at least one CO measuring point, and the outlet of the economizer is provided with at least two CO measuring points;
s2, establishing a parameter prediction model of the boiler according to historical operating data of the boiler; the historical operation data of the boiler comprises boiler load, coal quality parameters, boiler coal feeding quantity, opening of each air door of the boiler, carbon content of fly ash and bottom slag, tail CO concentration, tail oxygen quantity and exhaust gas temperature; when a parameter prediction model of the boiler is established, the method comprises the following steps:
adopting a neural network model to construct a parameter prediction initial model of the boiler;
acquiring historical boiler operation data in a period of time, CO concentration of each CO measuring point, NOx concentration at an inlet of a boiler SCR denitration system and boiler efficiency, inputting the historical boiler operation data serving as an input sample, and the CO concentration of each CO measuring point, the NOx concentration at the inlet of the boiler SCR denitration system and the boiler efficiency serving as expected outputs into the parameter prediction initial model for training to obtain the parameter prediction model;
s3, establishing an air door opening data set, wherein the air door is a secondary air door, and the opening data set comprises a plurality of optimized values A of all the air door openingsijI is 1, 2, … and m, j is the number of the secondary air door of the target boiler, j is 1, 2, … and n, m and n are positive integers, and | A0j-Aij| < 10%, wherein A0jIs the current opening degree of the air door, and is more than or equal to 0 and less than or equal to AijLess than or equal to 100 percent; in this embodiment, the Aij includes: all combinations of A0j, A0j + -10%, A0j + -5%;
s4, substituting the real-time operation data of the boiler into the parameter prediction model, and calculating to obtain a boiler efficiency prediction value of the boiler, a NOx concentration prediction value of an inlet of an SCR denitration system of the boiler and a CO concentration prediction value of each CO measuring point under each optimized value of the air door opening data set; the real-time operation data of the boiler comprises boiler load, coal quality parameters, boiler coal feeding quantity, opening degrees of air doors of the boiler, carbon content of fly ash and bottom slag, tail CO concentration, tail oxygen quantity and exhaust gas temperature;
s5, calculating the real-time boiler efficiency of the boiler according to the real-time operation data of the boiler;
s6, comparing the predicted values of boiler efficiency, NOx concentration and CO concentration at the respective CO measurement points under the respective optimized values of the air door opening data set with the real-time boiler efficiency, NOx concentration and CO concentration at the respective CO measurement points of the boiler, respectively, to adjust the opening of the air door of the boiler, specifically, the method includes:
A. calculating the average value of the CO concentration in the current boiler furnace and the average value of the CO concentration in the boiler furnace under each optimized value of the air door opening data set, if the average value of the CO concentration in the boiler furnace under each optimized value of the air door opening data set is larger than the average value of the CO concentration in the current boiler furnace, keeping the current opening of the air door unchanged, and otherwise, selecting all air door opening optimized values corresponding to the average value of the CO optimized concentration in the boiler furnace, which are not larger than the average value of the CO concentration in the current boiler furnace, to form a first data set;
B. comparing the boiler efficiency predicted value under each optimized value of the first data set with the real-time boiler efficiency of the boiler, if the boiler efficiency predicted value under each optimized value of the first data set is smaller than the real-time boiler efficiency of the boiler, selecting the optimized value corresponding to the maximum boiler efficiency predicted value as the opening of the air door, and otherwise, selecting all the air door opening optimized values corresponding to the boiler efficiency predicted values which are not smaller than the real-time boiler efficiency of the boiler to form a second data set;
C. comparing the concentration predicted value of NOx at the inlet of the boiler SCR denitration system under each predicted value of the second data set with the concentration of NOx at the inlet of the real-time SCR denitration system of the boiler, if the concentration predicted values of NOx at the inlet of the boiler SCR denitration system under each optimized value of the second data set are all larger than the concentration of NOx at the inlet of the real-time SCR denitration system of the boiler, selecting the corresponding fullness opening degree optimized value when the concentration predicted value of NOx at the inlet of the boiler SCR denitration system is minimum as the target opening degree of the air door, and otherwise, selecting all air door opening degree optimized values corresponding to the concentration predicted value of NOx at the inlet of the boiler SCR denitration system, which is not larger than the concentration of NOx at the inlet of the real-;
D. and calculating the average value of the CO concentration in the boiler furnace under each predicted value of the third data set, and selecting the optimized value corresponding to the minimum average value of the CO concentration in the boiler furnace as the target opening of the air door.
In this embodiment, through the above-mentioned S1-S2, a plurality of CO measurement points are respectively arranged on a corrosion prone area on a boiler furnace and at an economizer outlet, so as to obtain a real-time CO concentration of each CO measurement point of the boiler, and at the same time, a parameter prediction model of the boiler is constructed based on a neural network model, and real-time boiler operation data is substituted into the parameter prediction model, so as to calculate a boiler efficiency prediction value of the boiler, a NOx concentration prediction value of an SCR denitration system inlet of the boiler, and a CO concentration prediction value of each CO measurement point under each optimized value of a wind door opening data set, and the calculation of the real-time boiler efficiency is obtained according to the boiler real-time operation data through an; adjusting the opening degree of a single air door of the boiler through S3-S6, repeating S3-S6 for multiple times, and adjusting the opening degree of each air door of the boiler in sequence, thereby completing the adjustment of the opening degree of the air door of the boiler; in this embodiment, a front-rear wall opposed boiler is selected, and as shown in fig. 3, 4 sets of high-temperature CO detection devices are installed on a boiler furnace, the left and right walls (AB sides) are symmetrically installed, wherein 2 sets of burnout zones, 2 sets of main combustion zones, 2 sets of economizer tails are installed, 1 set of left and right flues are respectively installed, the time load of a certain period of the boiler unit is 1000MW, and the real-time CO concentrations of the furnace and the tails are respectively as follows: the A fuel is 85404ppm, the A fuel is 67327ppm mainly, the B fuel is 92652ppm, the B fuel is 63928ppm mainly, the left province is 2386ppm, and the right province is 1839 ppm. The boiler air door opening degree adopts a layer regulation mode, namely the air door opening degree of the same layer is always kept equal, and the corresponding air door opening degree is as follows: 90% of A/D layer, 80% of B/E layer, 75% of C/F layer and 40% of burnout layer. The boiler efficiency is 92.78Percent, inlet NOx concentration of the SCR denitration system is 382mg/Nm3. The air doors on the A/D layer, the B/E layer, the C/F layer and the burnout layer are adjusted by the high-temperature corrosion prevention boiler air door opening control method in the embodiment, and the opening of each adjusted air door is as follows: 85% of A/D layer, 85% of B/E layer, 80% of C/F layer and 45% of burnout layer. The target furnace CO concentrations were as follows: the A fuel was 75429ppm, the A fuel was mostly 57394ppm, the B fuel was 75021ppm, and the B fuel was mostly 53842 ppm. The target boiler efficiency is 92.91%, and the target inlet NOx concentration of the SCR denitration system is 363mg/Nm3. Adjusting the corresponding air door to the opening degree of the target air door through the adjusting instruction, and measuring the CO concentration of the hearth after the combustion is stable as follows: the A combustion is 73849ppm, the A combustion is mainly 55473ppm, the B combustion is 74820ppm, the B combustion is mainly 52284ppm, the boiler efficiency is 92.90 percent, and the inlet NOx concentration of a target SCR denitration system is 368mg/Nm3。
The invention also provides a high-temperature corrosion prevention boiler air door opening control system, and the boiler air door opening control method comprises a DCS controller, a processor and a display device, wherein the DCS controller is electrically connected with the control system of the boiler, and the DCS controller and the display device are respectively electrically connected with the processor; also included is a memory device electrically connected to the processor.
In this embodiment, as shown in fig. 4, the processor is responsible for calculating the opening degree of each air door of the boiler, and sending the calculated result to the DCS controller, and then controlling the control system of the boiler through the DCS controller to adjust the opening degree of each air door of the boiler; meanwhile, all data in the running process of the processor are stored through the storage device, so that later-stage reference is facilitated.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (10)
1. A high-temperature corrosion prevention boiler air door opening control method is characterized by comprising the following steps:
respectively arranging a plurality of CO measuring points on a corrosion prone area on a boiler furnace and at an outlet of an economizer to obtain the real-time CO concentration of each CO measuring point;
establishing a parameter prediction model of the boiler according to historical operating data of the boiler;
establishing an air door opening data set, wherein the air door is a secondary air door, and the opening data set comprises a plurality of optimized values A of all secondary air door openingsijI is 1, 2, … and m, j is the number of the secondary air door of the target boiler, j is 1, 2, … and n, m and n are all positive integers, and | A0j-Aij| < 10%, wherein A0jIs the current opening degree of the air door, and is more than or equal to 0 and less than or equal to Aij≤100％；
Substituting the real-time operation data of the boiler into the parameter prediction model, and calculating to obtain a boiler efficiency prediction value of the boiler, a NOx concentration prediction value at an inlet of an SCR (selective catalytic reduction) denitration system of the boiler and a CO concentration prediction value at each CO measuring point under each optimized value of the air door opening data set;
calculating the real-time boiler efficiency of the boiler according to the real-time operation data of the boiler;
and comparing the boiler efficiency predicted value, the NOx concentration predicted value at the inlet of the boiler SCR denitration system and the CO concentration predicted value at each CO measuring point under each optimized value of the air door opening data set with the real-time boiler efficiency of the boiler, the NOx concentration at the inlet of the boiler real-time SCR denitration system and the real-time CO concentration at each CO measuring point respectively, and adjusting the opening of the air door of the boiler.
2. The method as claimed in claim 1, wherein the historical operating data of the boiler and the real-time operating data of the boiler comprise boiler load, coal quality parameters, coal feeding amount of the boiler, opening of each air door of the boiler, carbon content of fly ash and bottom slag, tail CO concentration, tail oxygen amount and exhaust gas temperature.
3. The method for controlling the opening degree of the air door of the boiler for preventing the high-temperature corrosion according to claim 2, wherein the step of establishing a parameter prediction model of the boiler comprises the following steps:
adopting a neural network model to construct a parameter prediction initial model of the boiler;
and acquiring historical boiler operation data in a period of time, the CO concentration of each CO measuring point, the NOx concentration of an inlet of the SCR denitration system of the boiler and the boiler efficiency, inputting the historical boiler operation data serving as an input sample, the CO concentration of each CO measuring point, the NOx concentration of the inlet of the SCR denitration system of the boiler and the boiler efficiency serving as expected outputs into the initial parameter prediction model for training to obtain the parameter prediction model.
4. The method for controlling the opening degree of the air door of the boiler for preventing the high-temperature corrosion according to claim 1, wherein when the opening degree of each air door of the boiler is adjusted, the method comprises the following steps:
calculating the average value of the CO concentration in the current boiler furnace and the average value of the CO concentration in the boiler furnace under each optimized value of the air door opening data set, if the average value of the CO concentration in the boiler furnace under each optimized value of the air door opening data set is larger than the average value of the CO concentration in the current boiler furnace, keeping the current opening of the air door unchanged, and otherwise, selecting all air door opening optimized values corresponding to the predicted CO concentration average value in the boiler furnace, which are not larger than the CO concentration average value in the current boiler furnace, to form a first data set;
comparing the boiler efficiency predicted value under each optimized value of the first data set with the real-time boiler efficiency of the boiler, if the boiler efficiency predicted values under each optimized value of the first data set are all smaller than the real-time boiler efficiency of the boiler, selecting the optimized value corresponding to the maximum boiler efficiency predicted value as the opening of the air door, and otherwise, selecting all the optimized values of the air door opening corresponding to the boiler efficiency predicted values not smaller than the real-time boiler efficiency of the boiler to form a second data set;
comparing the concentration predicted value of NOx at the inlet of the boiler SCR denitration system under each predicted value of the second data set with the concentration of NOx at the inlet of the real-time SCR denitration system of the boiler, if the concentration predicted values of NOx at the inlet of the boiler SCR denitration system under each optimized value of the second data set are all larger than the concentration of NOx at the inlet of the real-time SCR denitration system of the boiler, selecting the optimized value corresponding to the minimum concentration predicted value of NOx at the inlet of the boiler SCR denitration system as the opening degree of the air door, and otherwise, selecting all the optimized values of the opening degree of the air door corresponding to the concentration predicted value of NOx at the inlet of the boiler SCR denitration system, which is not larger than the concentration of NOx at the inlet of the real;
and calculating the average value of the CO concentration in the boiler furnace under each predicted value of the third data set, and selecting the optimized value corresponding to the minimum average value of the CO concentration in the boiler furnace as the target value of the opening degree of the air door.
5. The method for controlling the opening degree of the high-temperature corrosion-resistant boiler damper as claimed in any one of claims 1 to 4, wherein A isijThe method comprises the following steps: a. the0j、A0j±10％、A0jAll combinations of 5%.
6. The method for controlling the opening degree of the air door of the boiler for preventing the high-temperature corrosion according to any one of claims 1 to 4, wherein the main combustion area and the burnout area in the hearth of the boiler each have at least one CO measuring point.
7. The method for controlling the opening degree of the high-temperature corrosion-resistant boiler damper as claimed in any one of claims 1 to 4, wherein the outlet of the economizer is provided with at least two CO measuring points.
8. A boiler air door opening degree control system for preventing high-temperature corrosion, which adopts the boiler air door opening degree control method according to any one of claims 1 to 7, and is characterized by comprising a controller, a processor and a display device, wherein the controller is electrically connected with the control system of the boiler, and the controller and the display device are respectively electrically connected with the processor.
9. The high temperature corrosion resistant boiler damper opening control system of claim 8, further comprising a memory device, said memory device being electrically connected to said processor.
10. The system for controlling the opening degree of a boiler damper for preventing high temperature corrosion according to claim 8, wherein the controller is a DCS controller.
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| CN113266833A (en) * | 2021-04-15 | 2021-08-17 | 华中科技大学 | Combustion optimization method, system and device of garbage incinerator |
| CN113266843A (en) * | 2021-04-08 | 2021-08-17 | 华中科技大学 | Combustion optimization method, system and device for coal-fired boiler |
| CN116776770A (en) * | 2023-06-13 | 2023-09-19 | 天津国能津能滨海热电有限公司 | CFD numerical simulation coupling BP neural network based method for relieving high-temperature corrosion of boiler |
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