A method and system for controlling the temperature of tertiary air at the kiln head

Abstract

The application discloses a kiln head tertiary air temperature control method and control system, and belongs to the technical field of detection systems, which comprises the following steps: S1, establishing a tertiary air temperature sample library: recording the tertiary air temperature under the kiln head coal feeding amount when different raw material feeding amounts are fed within a certain time, and calculating the average value average(Temp3) and the standard deviation epsilon(Temp3) to establish the tertiary air temperature sample library; S2, judging and classifying the tertiary air temperature sample library; S3, controlling the kiln head tertiary air temperature according to the judgment classification result: when the tertiary air temperature is too low, the F1 and F2 fan rotating speeds are reduced, and the grate bed speed is increased; when the tertiary air temperature is low, the F1 and F2 fan rotating speeds are reduced; when the tertiary air temperature is normal, the existing operation is maintained; when the tertiary air temperature is high, the F1 and F2 fan rotating speeds are increased; and when the tertiary air temperature is too high, the F1 and F2 fan rotating speeds are increased, and the grate bed speed is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of detection system, and particularly relates to a control method and control system for kiln head tertiary air temperature. BACKGROUND

[0002] Cement rotary kiln is a key core process equipment for cement clinker production. At present, the number of cement rotary kiln in China is about 1500. In the process of cement clinker production, the wind, coal, material and rotary kiln operation need to be reasonably matched and the stable thermal system needs to be adjusted in abnormal conditions. If it cannot be handled in time, it will affect the yield and quality of cement clinker, and even cause serious equipment and safety problems.

[0003] In the operation of cement rotary kiln, the calcination of clinker is the absolute key factor to ensure the quality level of clinker, and the most core is the flame temperature in the rotary kiln. However, the particularity of cement rotary kiln leads to the fact that it cannot be directly measured. The tertiary air temperature is often used to estimate the flame temperature. The tertiary air refers to the hot air that enters the decomposing furnace through the tertiary air pipe after passing through the grate cooler. The temperature of the tertiary air is mainly affected by the cement raw material quantity, the coal powder quantity and the grate cooler related parameters. The high and low of the tertiary air temperature reflects the cooling effect of the grate cooler on the one hand, and on the other hand, it has a great influence on the combustion in the decomposing furnace, and further affects the stability of cement process production.

[0004] Due to the influence of many factors such as skinning, caking, mechanical failure and the like in the grate cooler, the cooling effect of the grate cooler will fluctuate to a certain extent every time the cement kiln starts the production process, so that the stable range of the tertiary air temperature after the cement kiln starts production every time is a certain system deviation. This greatly increases the difficulty of judging whether the tertiary air temperature is in the normal range.

[0005] In addition, the tertiary air temperature has a certain relationship with the raw material quantity and the kiln head coal feeding quantity. Many experts analyze the high and low of the tertiary air temperature in isolation, and ignore the interference of the raw material quantity and the kiln head coal feeding quantity, which greatly increases the difficulty of analyzing the tertiary air temperature.

[0006] In addition, the temperature of the tertiary air is usually part of the so-called "kiln condition". The cement rotary kiln operator usually makes a comprehensive judgment by the clinker sintering state (including the free calcium content of the clinker, the vertical weight of the clinker, the particle size of the clinker observed by the naked eye, etc.), the burning state of the firing zone (including the naked eye observation of the flame camera, the oxygen concentration, carbon monoxide concentration, nitrogen oxide concentration, temperature, etc. in the smoke chamber) and the physical parameters of the kiln operation (including the surface temperature distribution of the rotary kiln cylinder, the kiln current curve, etc.) and other factors, that is, the so-called "kiln condition". Thus, the judgment of the kiln condition is seriously dependent on the personal experience of the rotary kiln operator, the labor intensity is large, the randomness of the judgment is large, and there is no clear mathematical model and algorithm to give a relatively ideal method for judging the high and low temperature of the tertiary air.

[0007] There is no mathematical model and method for quickly judging the temperature of the tertiary air in the cement industry, and the so-called kiln condition is of great significance to the stability of actual industrial production and product quality. At present, many cement industry emission reduction technologies have entered the intelligent and smart stage, such as CN114067933A intelligent denitrification, and the intelligent level of the cement process itself needs to be improved to provide corresponding support.

[0008] Therefore, the present application is committed to solving the following technical problems:

[0009] First, how to establish a simple, effective and fast digital method for judging the high and low temperature of the tertiary air.

[0010] Second, how to use parameters with fast response speed, high measurement accuracy, fewer influencing factors, stable and reliable data, and convenient adjustment to adjust the high and low temperature of the tertiary air.

[0011] Third, how to eliminate the system deviation of the normal working range of the tertiary air caused by various factors such as the formation of skin and large blocks in the grate cooler after the start of the cement kiln, mechanical failure, etc.

[0012] Fourth, how to eliminate the interference of the raw material feeding amount and the kiln head coal feeding amount on the analysis of the tertiary air temperature. SUMMARY

[0013] The present application provides a kiln head tertiary air temperature control method and control system to solve the technical problems in the prior art.

[0014] The first object of the present application is to provide a kiln head tertiary air temperature control method, comprising:

[0015] S1, establishing a tertiary air temperature sample library:

[0016] Under the normal and stable condition of cement process, record the third air temperature under different raw material feeding amount and kiln head coal feeding amount in a certain time, and calculate the average value average(Temp3) and standard deviation ε(Temp3) to establish the third air temperature sample library;

[0017] S2, judge and classify the third air temperature sample library:

[0018] According to the average temperature of the third air in a judgment period T1, the following judgment classification is made:

[0019] The field third air temperature is defined as X,

[0020] When X is less than average(Temp3)-5*ε(Temp3), the judgment classification result is that the third air temperature is too low;

[0021] When X is greater than average(Temp3)-5*ε(Temp3) and less than average(Temp3)-3*ε(T3), the judgment classification result is that the third air temperature is low;

[0022] When X is greater than average(Temp3)-3*ε(Temp3) and less than average(Temp3)+3*ε(Temp3), the judgment classification result is that the third air temperature is normal;

[0023] When X is greater than average(Temp3)+3*ε(Temp3) and less than average(Temp3)+5*ε(Temp3), the judgment classification result is that the third air temperature is high;

[0024] When X is greater than average(Temp3)+5*ε(Temp3), the judgment classification result is that the third air temperature is too high;

[0025] S3, according to the judgment classification result, control the kiln head third air temperature:

[0026] When the third air temperature is too low, reduce the speed of F1 and F2 fans, and increase the grate bed speed;

[0027] When the third air temperature is low, reduce the speed of F1 and F2 fans;

[0028] When the third air temperature is normal, keep the existing operation;

[0029] When the third air temperature is high, increase the speed of F1 and F2 fans;

[0030] When the third air temperature is too high, increase the speed of F1 and F2 fans, and reduce the grate bed speed.

[0031] Preferably, T1 is not less than 1 minute.

[0032] Preferably, the three-stage air temperature sample library is updated as time goes on.

[0033] Preferably, when the three-stage air temperature is adjusted, the adjustment range of the grate bed speed is 2%, the adjustment range of the rotating speed of the F1 fan is 1%, and the adjustment range of the rotating speed of the F2 fan of the grate cooler is 0.8%.

[0034] The second object of the present application is to provide a control system for the three-stage air temperature at the kiln head, comprising:

[0035] Database module: establishing a three-stage air temperature sample library

[0036] Under the normal and stable condition of the cement process, the three-stage air temperature at the kiln head under the coal feeding amount is recorded within a certain time and under different raw material feeding amounts, and the average value average(Temp3) and the standard deviation ε(Temp3) are calculated to establish a three-stage air temperature sample library.

[0037] Judgment classification module: judging and classifying the three-stage air temperature sample library

[0038] According to the three-stage air average temperature within a judgment period T1, the following judgment classification is performed:

[0039] The field three-stage air temperature is defined as X,

[0040] When X is less than average(Temp3)-5*ε(Temp3), the judgment classification result is that the three-stage air temperature is too low.

[0041] When X is greater than average(Temp3)-5*ε(Temp3) and less than average(Temp3)-3*ε(T3), the judgment classification result is that the three-stage air temperature is low.

[0042] When X is greater than average(Temp3)-3*ε(Temp3) and less than average(Temp3)+3*ε(Temp3), the judgment classification result is that the three-stage air temperature is normal.

[0043] When X is greater than average(Temp3)+3*ε(Temp3) and less than average(Temp3)+5*ε(Temp3), the judgment classification result is that the three-stage air temperature is high.

[0044] When X is greater than average(Temp3)+5*ε(Temp3), the judgment classification result is that the three-stage air temperature is too high.

[0045] Control module: according to the judgment classification result, the kiln head tertiary air temperature is controlled:

[0046] When the tertiary air temperature is too low, the F1 and F2 fan rotating speeds are reduced, and the grate bed speed is increased;

[0047] When the tertiary air temperature is low, the F1 and F2 fan rotating speeds are reduced;

[0048] When the tertiary air temperature is normal, the existing operation is maintained;

[0049] When the tertiary air temperature is high, the F1 and F2 fan rotating speeds are increased;

[0050] When the tertiary air temperature is too high, the F1 and F2 fan rotating speeds are increased, and the grate bed speed is reduced.

[0051] Preferably, T1 is not less than 1 minute.

[0052] Preferably, the tertiary air temperature sample library is updated as time goes on.

[0053] Preferably, when the tertiary air temperature is adjusted, the adjustment range of the grate bed speed is 2%, the adjustment range of the F1 fan rotating speed is 1%, and the adjustment range of the F2 fan rotating speed of the grate cooler is 0.8%.

[0054] A third object of the present application is to provide an information data processing terminal for implementing the above-mentioned kiln head tertiary air temperature control method.

[0055] A fourth object of the present application is to provide a computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the above-mentioned kiln head tertiary air temperature control method.

[0056] The present application has the advantages and positive effects that:

[0057] 1. The present application collects the tertiary air temperature under different raw material feeding amounts and kiln head coal feeding amounts, and obtains the average value average(Temp3) and the standard deviation epsilon(Temp3), thereby establishing a tertiary air temperature sample library. Through comparison of the current tertiary air temperature with the sample library, the current tertiary air temperature can be simply, effectively, quickly and digitally judged as being in the normal range or not.

[0058] 2. The present application uses the grate bed speed, the fan rotating speed which have fast response speed, high measurement accuracy, less influencing factors and long-term stable and reliable data, to quickly adjust the tertiary air temperature.

[0059] 3. The present application eliminates the system deviation of the tertiary air normal working range caused by cement kiln grate cooler internal skinning and the like by establishing the tertiary air temperature sample library after each start of production.

[0060] Fourthly, the present application establishes a tertiary air temperature sample library by using different raw material feeding amounts and tertiary air temperature under different kiln head coal feeding amounts, so as to eliminate the interference of raw material feeding amount and kiln head coal feeding amount on the analysis of tertiary air temperature. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 Figure 1 is a schematic diagram of the process equipment of the present application

[0062] Wherein: 1, F1 fan; 2, F2 fan; 3, grate bed; 4, tertiary air temperature measuring point. DETAILED DESCRIPTION

[0063] In order to further understand the invention content, characteristics and effects of the present application, the following examples are given, and are described in detail as follows in combination with the drawings:

[0064] The technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the technical solutions in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0065] Please refer to Figure 1 ,

[0066] The process equipment of the present application comprises F1 fan 1; 2, F2 fan 2 and grate bed 3; and tertiary air temperature measuring point 4 as shown in Figure 1 ;

[0067] A kiln head tertiary air temperature control method, comprising:

[0068] S1, establishing a tertiary air temperature sample library:

[0069] Under normal and stable cement process, record the tertiary air temperature under different raw material feeding amounts and kiln head coal feeding amounts within a certain time, and calculate the average value average(Temp3) and standard deviation ε(Temp3), so as to establish a tertiary air temperature sample library;

[0070] Under normal and stable cement process as considered by the cement process operator, record the tertiary air temperature under different raw material feeding amounts and kiln head coal feeding amounts within a certain time, and calculate the average value average(Temp3) and standard deviation ε(Temp3), so as to establish a tertiary air temperature sample library. The total sample database is automatically updated with the extension of time for average(Temp3) and ε(Temp3) under different raw material feeding amounts.

[0071] S2, judging and classifying the tertiary air temperature sample library:

[0072] According to the three-time wind temperature (T1 is not less than 1 minute) in the artificial setting judgment cycle T1, the following judgment is made:

[0073] The field three-time wind temperature is defined as X,

[0074] When X is less than average(Temp3)-5*ε(Temp3), the classification result is judged to be that the three-time wind temperature is too low;

[0075] When X is greater than average(Temp3)-5*ε(Temp3) and less than average(Temp3)-3*ε(T3), the classification result is judged to be that the three-time wind temperature is low;

[0076] When X is greater than average(Temp3)-3*ε(Temp3) and less than average(Temp3)+3*ε(Temp3), the classification result is judged to be that the three-time wind temperature is normal;

[0077] When X is greater than average(Temp3)+3*ε(Temp3) and less than average(Temp3)+5*ε(Temp3), the classification result is judged to be that the three-time wind temperature is high;

[0078] When X is greater than average(Temp3)+5*ε(Temp3), the classification result is judged to be that the three-time wind temperature is too high;

[0079] The above judgment is re-performed in the next cycle.

[0080] The calculation and judgment must be performed under the condition of continuous production of the cement kiln.

[0081] S3, according to the judgment classification result, the kiln head three-time wind temperature is controlled:

[0082] When the three-time wind temperature is too low, reduce the F1, F2 fan speed, and increase the grate bed speed;

[0083] When the three-time wind temperature is low, reduce the F1, F2 fan speed;

[0084] When the three-time wind temperature is normal, maintain the existing operation;

[0085] When the three-time wind temperature is high, increase the F1, F2 fan speed;

[0086] When the three-time wind temperature is too high, increase the F1, F2 fan speed, and reduce the grate bed speed.

[0087] The higher the speed of the fan, the greater the amount of air passing through the grate bed, and the lower the temperature of the tertiary air after heat exchange; the higher the speed of the grate bed, the faster the movement of the material layer on the grate bed, and the smaller the thickness of the material layer on the grate bed, and the lower the temperature of the tertiary air after heat exchange. Therefore, increasing the speed of the fan and reducing the speed of the grate bed can both reduce the temperature of the tertiary air.

[0088] When the cement kiln resumes production, the kiln burner, burner nozzle, grate plate of the grate cooler, kiln door cover of the cement kiln, and fan of the grate cooler are replaced or adjusted, the tertiary air temperature sample library must be recalculated.

[0089] The tertiary air temperature sample library accumulates for a certain period of time (set to 24 hours) before control can be performed.

[0090] When adjusting the tertiary air temperature, the adjustment range of the grate bed speed (times / minute) should be 2%, the adjustment range of the speed of the F1 fan (units: revolutions / minute) should be 1%, and the adjustment range of the speed of the F2 fan of the grate cooler (units: revolutions / minute) should be 0.8%.

[0091] A control system for the tertiary air temperature of a kiln head, comprising:

[0092] A database module: establishing a tertiary air temperature sample library:

[0093] Under normal and stable conditions of the cement process, record the tertiary air temperature under different raw material feeding amounts and kiln coal feeding amounts within a certain period of time, and calculate the average value average(Temp3) and the standard deviation ε(Temp3) to establish a tertiary air temperature sample library;

[0094] Under normal and stable conditions of the cement process as considered by the cement process operator, record the tertiary air temperature under different raw material feeding amounts and kiln coal feeding amounts within a certain period of time, and calculate the average value average(Temp3) and the standard deviation ε(Temp3) to establish a tertiary air temperature sample library. The total sample database automatically updates the average(Temp3) and ε(Temp3) under different raw material feeding amounts over time.

[0095] A judgment classification module: judging and classifying the tertiary air temperature sample library:

[0096] According to the tertiary air temperature within the judgment period T1 set by the artificial (T1 is not less than 1 minute), the following judgment is made:

[0097] The on-site tertiary air temperature is defined as X,

[0098] When X is less than average(Temp3)-5*ε(Temp3), the judgment classification result is that the tertiary air temperature is too low;

[0099] When X is greater than average(Temp3)-5*ε(Temp3) and X is less than average(Temp3)-3*ε(Temp3), the classification result is judged to be that the tertiary air temperature is low;

[0100] When X is greater than average(Temp3)-3*ε(Temp3) and X is less than average(Temp3)+3*ε(Temp3), the classification result is judged to be that the tertiary air temperature is normal;

[0101] When X is greater than average(Temp3)+3*ε(Temp3) and X is less than average(Temp3)+5*ε(Temp3), the classification result is judged to be that the tertiary air temperature is high;

[0102] When X is greater than average(Temp3)+5*ε(Temp3), the classification result is judged to be that the tertiary air temperature is too high;

[0103] The control module: according to the judgment classification result, the tertiary air temperature of the kiln head is controlled:

[0104] When the tertiary air temperature is too low, the F1 and F2 fan speeds are reduced, and the grate bed speed is increased;

[0105] When the tertiary air temperature is low, the F1 and F2 fan speeds are reduced;

[0106] When the tertiary air temperature is normal, the existing operation is maintained;

[0107] When the tertiary air temperature is high, the F1 and F2 fan speeds are increased;

[0108] When the tertiary air temperature is too high, the F1 and F2 fan speeds are increased, and the grate bed speed is reduced.

[0109] When the cement kiln restarts production, the kiln head burner, the burner nozzle, the grate plate of the grate cooler, the kiln door cover of the cement kiln, and the fan of the grate cooler are replaced or adjusted, the tertiary air temperature sample library must be restarted to calculate.

[0110] The tertiary air temperature sample library accumulates for a certain period of time (set to 24 hours) before control can be performed.

[0111] When adjusting the tertiary air temperature, the grate bed speed (times / minute) adjustment range is preferably 2%, the F1 fan speed (units: revolutions / minute) adjustment range is preferably 1%, and the F2 fan speed (units: revolutions / minute) adjustment range of the grate cooler is preferably 0.8%. DETAILED DESCRIPTION

[0113] Under the condition of continuous production of a cement kiln with a daily output of 6000 tons of cement clinker in Zhejiang, the calculation and judgment are carried out.

[0114] Under the condition of normal and stable cement process considered by a cement process operator, the temperature of the tertiary air under different raw material feeding amounts and kiln head coal feeding amounts in a certain time is recorded, and the average value average(Temp3) and the standard deviation ε(Temp3) are calculated to establish a tertiary air temperature sample library. The total sample database is automatically updated with the extension of time for average(Temp3) and ε(Temp3) under different raw material feeding amounts.

[0115] According to the tertiary air temperature in the judgment period T1 set by artificial (T1 is 1 minute), the following judgment is carried out:

[0116] Table 1, judgment classification table

[0117]

[0118] The current state is that the speed of the grate cooler F1 fan is 2500 revolutions / minute, the outlet pressure is 8000 Pa, the speed of the grate cooler F2 fan is 2500 revolutions / minute, the outlet pressure is 6000 Pa, the grate bed speed is 4 times / minute, the kiln head coal feeding amount is 15 tons / hour, the raw material feeding amount is 400 tons / hour, and the kiln head primary air pressure is 50000 Pa. According to the database, average(Temp3) = 950℃ and ε(Temp3) = 30℃ are found.

[0119] The current tertiary air temperature is 1100℃, so the current tertiary air temperature is too high.

[0120] Then the grate bed speed is increased to 4+4*2%=4.08

[0121] The speed of the F1 fan is increased to 2500+2500*1%=2525

[0122] The speed of the F2 fan is increased to 2500+2500*0.8%=2520.

[0123] An information data processing terminal for realizing the control method of the tertiary air temperature of the kiln head.

[0124] A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the control method of the tertiary air temperature of the kiln head.

[0125] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When all or part of the embodiments are implemented in the form of a computer program product, the computer program product includes one or more computer instructions. When the computer program instructions are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through a wired (such as coaxial cable, optical fiber, digital subscriber line (DSL) or wireless (such as infrared, wireless, microwave, etc.)) way. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)) and the like.

[0126] The above description is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments are within the scope of the technical solution of the present application.

Claims

1. A method for controlling the temperature of tertiary air at the kiln head, characterized in that, include: S1. Establish a three-dimensional air temperature sample library: Under normal and stable cement process conditions, record the tertiary air temperature under different raw material feeding amounts and coal feeding amounts at the kiln head within a certain period of time, and calculate the average value (Temp3) and standard deviation ε (Temp3) to establish a tertiary air temperature sample library. S2. Classify and assess the tertiary wind temperature sample library: Based on the average temperature of the three winds within a judgment period T1, the following judgment and classification are performed: The on-site tertiary air temperature is defined as X. When X is less than average(Temp3)-5*ε(Temp3), the classification result is that the tertiary wind temperature is too low. When X is greater than average(Temp3)-5*ε(Temp3) and less than average(Temp3)-3*ε(T3), the classification result is that the tertiary wind temperature is too low. When X is greater than average(Temp3)-3*ε(Temp3) and less than average(Temp3)+3*ε(Temp3), the classification result is judged as normal temperature of the tertiary wind. When X is greater than average(Temp3)+3*ε(Temp3) and less than average(Temp3)+5*ε(Temp3), the classification result is that the tertiary wind temperature is too high. When X is greater than average(Temp3)+5*ε(Temp3), the classification result is that the tertiary wind temperature is too high. S3. Based on the classification results, control the tertiary air temperature at the kiln head: When the tertiary air temperature is too low, reduce the speed of F1 and F2 fans, and increase the speed of the grate bed. When the tertiary air temperature is low, reduce the speed of F1 and F2 fans; When the tertiary air temperature is normal, maintain the existing operation; When the tertiary air temperature is too high, increase the speed of F1 and F2 fans; When the temperature of the tertiary air is too high, increase the speed of the F1 and F2 fans, and at the same time reduce the speed of the grate bed.

2. The method for controlling the temperature of the tertiary air at the kiln head according to claim 1, characterized in that, T1 is no less than 1 minute.

3. The method for controlling the temperature of the tertiary air at the kiln head according to claim 2, characterized in that, As time progresses, the three-dimensional wind temperature sample database will be updated.

4. The method for controlling the temperature of the tertiary air at the kiln head according to claim 1, characterized in that, When adjusting the tertiary air temperature, the adjustment range for the grate speed is 2%, the adjustment range for the F1 fan speed is 1%, and the adjustment range for the F2 fan speed of the grate cooler is 0.8%.

5. A control system for the temperature of tertiary air at the kiln head, characterized in that, include: Database module: Establishing a tertiary air temperature sample library: Under normal and stable cement process conditions, record the tertiary air temperature under different raw material feeding amounts and coal feeding amounts at the kiln head within a certain period of time, and calculate the average value (Temp3) and standard deviation ε (Temp3) to establish a tertiary air temperature sample library. Classification module: Classifies the tertiary air temperature sample library. Based on the average temperature of the three winds within a judgment period T1, the following judgment and classification are performed: The on-site tertiary air temperature is defined as X. When X is less than average(Temp3)-5*ε(Temp3), the classification result is that the tertiary wind temperature is too low. When X is greater than average(Temp3)-5*ε(Temp3) and less than average(Temp3)-3*ε(T3), the classification result is that the tertiary wind temperature is too low. When X is greater than average(Temp3)-3*ε(Temp3) and less than average(Temp3)+3*ε(Temp3), the classification result is judged as normal temperature of the tertiary wind. When X is greater than average(Temp3)+3*ε(Temp3) and less than average(Temp3)+5*ε(Temp3), the classification result is that the tertiary wind temperature is too high. When X is greater than average(Temp3)+5*ε(Temp3), the classification result is that the tertiary wind temperature is too high. Control module: Based on the classification results, control the temperature of the tertiary air at the kiln head. When the tertiary air temperature is too low, reduce the speed of F1 and F2 fans, and increase the speed of the grate bed. When the tertiary air temperature is low, reduce the speed of F1 and F2 fans; When the tertiary air temperature is normal, maintain the existing operation; When the tertiary air temperature is too high, increase the speed of F1 and F2 fans; When the temperature of the tertiary air is too high, increase the speed of the F1 and F2 fans, and at the same time reduce the speed of the grate bed.

6. The control system for the tertiary air temperature at the kiln head according to claim 5, characterized in that, T1 is no less than 1 minute.

7. The control system for the tertiary air temperature at the kiln head according to claim 6, characterized in that, As time progresses, the three-dimensional wind temperature sample database will be updated.

8. The control system for the tertiary air temperature at the kiln head according to claim 5, characterized in that, When adjusting the tertiary air temperature, the adjustment range for the grate speed is 2%, the adjustment range for the F1 fan speed is 1%, and the adjustment range for the F2 fan speed of the grate cooler is 0.8%.

9. An information data processing terminal, characterized in that, This method is used to implement the kiln head tertiary air temperature control method according to any one of claims 1-4.

10. A computer-readable storage medium, characterized in that, Including instructions, when executed on a computer, causing the computer to perform the method for controlling the temperature of the tertiary air at the kiln head as described in any one of claims 1-4.

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