Glass kiln flue gas denitration control system

Abstract

The invention discloses a glass kiln flue gas denitration control system, relates to the technical field of flue gas denitration control, solves the problem that the optimal reaction space point location is not determined aiming at flue gas at different speeds per hour, and aims to determine the optimal reaction space point location based on the determined motion rates by sequentially confirming the motion rates associated with different flue gas and determine the optimal reaction space point location based on the determined motion rates. According to the method, the motion condition of the corresponding flue gas in the reaction bin is determined according to the specific motion process and the set optimal reaction time of the corresponding flue gas, the optimal point position of the corresponding flue gas needing to be subjected to denitration control is determined based on the specific motion process and the set optimal reaction time of the corresponding flue gas, the optimal control time is determined based on the corresponding optimal point position, and the control time is controlled according to flue gas with different flows. The determined optimal point positions and the related reaction time are different, so that the specified injection pipe is controlled in real time, a better flue gas denitration control effect is achieved, the reaction effect is better, and the denitration rate of exhausted flue gas can reach the optimal state.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas denitration control, and in particular to a glass kiln flue gas denitration control system. Background Art

[0002] The main goal of flue gas denitrification control is to reduce the concentration of nitrogen oxides in the flue gas of the glass kiln to below the prescribed emission standards, while minimizing the use of denitrification agents (such as ammonia) to reduce operating costs and avoid safety issues such as ammonia leakage.

[0003] The application with publication number CN118689173A discloses a glass kiln denitrification and ammonia injection control system that eliminates time lag, and relates to the field of flue gas denitrification technology; it includes a collection and sorting module for collecting and sorting data on the temperature and flue gas composition at multiple positions in the kiln; a distribution field simulation module that analyzes and simulates the temperature field distribution in the kiln and the flue gas composition at each position in the kiln based on the temperature field according to the collected data; a data association module that correlates the temperature distribution in the kiln and the properties of the mixed flue gas at the corresponding temperature, and calculates the flue gas velocity at any position in the kiln; a prediction control module that predicts the composition of the mixed flue gas at any time at the flue gas outlet and accurately controls the amount of ammonia injection accordingly; the invention eliminates the time lag of the ammonia injection amount by accurately determining the composition of the exhaust flue gas and accurately calculating the time delay value, thereby avoiding the problem of ammonia escape or incomplete denitrification, while reducing production costs and saving resources.

[0004] When controlling flue gas denitrification in a glass kiln, the concentration data is generally confirmed based on the running speed of the corresponding flue gas in the pipeline, thereby locking the corresponding ammonia injection amount. However, this method still has certain problems in the actual processing process: the flue gas entering the reaction chamber will react immediately. If the corresponding flue gas stays for too long during the reaction, there will be an overreaction. The optimal spatial point of reaction is not determined for flue gases at different speeds, so as to confirm the specific reaction area to ensure that the corresponding flue gas can not only be denitrified, but also will not overreact. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a glass kiln flue gas denitrification control system, which solves the problem of not determining the optimal spatial point for the reaction for flue gases at different speeds.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A glass kiln flue gas denitrification control system, comprising: The cross-sectional flow monitoring terminal monitors the flue gas flow rate and flue gas nitrogen oxide concentration entering the reaction chamber inlet cross-sectional area. The real-time monitored flue gas flow rate is transmitted to the associated speed analysis terminal, and the real-time monitored flue gas nitrogen oxide concentration is transmitted to the direct injection data confirmation terminal. The associated speed analysis end determines the movement speed of the flue gas at the corresponding time based on the real-time monitored flue gas flow rate and the cross-sectional area of ​​the reaction chamber inlet section, and then transmits the movement speed confirmed at the corresponding time to the direct injection data confirmation end. The specific method is as follows: The cross-sectional area of ​​the proposed anti-sense warehouse entrance section is M, where M is a preset value, and then based on the smoke flow rate L monitored at the corresponding section i , where i represents different moments, using L i =M×V i Confirm the movement speed V of the smoke at the corresponding time i ; The direct injection data confirmation end identifies the residence time of the corresponding flue gas in the reaction chamber based on the movement rate confirmed by the relevant flue gas at the corresponding moment, and confirms the optimal direct injection point of the relevant flue gas based on the residence time. Then, based on the flue gas nitrogen oxide concentration associated with the relevant flue gas, the injection amount of the optimal direct injection point is controlled, and based on the real-time processing results, control data is generated in real time. The specific method is as follows: Confirm the movement speed V of the smoke at the current moment i , and based on the chamber length TC in the reaction chamber, where TC is a preset value, TC÷V i =T i Confirm the relevant time parameter T i ; The confirmed relevant time parameter T i Check with the preset reaction time F1, where F1 is the preset value; If T i ≤F1, the reaction chamber entrance is taken as the direct injection point. After the direct injection point is confirmed, the direct injection point is calibrated in the reaction chamber model based on the preset reaction chamber model, and then the injection direction of the injection pipe is made consistent with this direct injection point, and its rotation angle is determined, and then the control time S is generated synchronously. i , its S i The value is 0 and is based on the flue gas nitrogen oxide concentration ND monitored at the current moment. i , confirm its injection amount PS i , where PS i =ND i ×C1×AQ, where C1 is the preset fixed coefficient factor, and AQ is the safety factor, which is 1.2. The control data associated with the flue gas denitrification purification at the current moment is generated. The control data includes: rotation angle, control time S i and injection quantity PS i ; If T i >F1, using TC-(V i ×F1) = XJ confirms the length data XJ of the flue gas path at the current moment, and based on this length data XJ and the reaction chamber model, confirms the distance from the reaction chamber entrance to the exit. When the confirmed distance is XJ, lock the associated point, mark the associated point as the direct injection point, and confirm the rotation angle of this direct injection point based on the reaction chamber model, and then use XJ÷V i =S i Confirm its control time, and then based on the flue gas nitrogen oxide concentration ND monitored at the current moment i Confirm the injection amount PS i The determination method is the same as T i ≤F1, and generates the control data associated with the current denitrification purification, which includes: rotation angle, control time S i and injection quantity PS i ; Transmitting the real-time confirmed control data to the associated control terminal; The associated control end controls the injection pipe inside the reaction chamber based on the received control data to denitrate the corresponding flue gas; the control time S associated with the corresponding control data is given priority. i , at the current moment, after S i Then directly control the injection pipe to change the rotation angle. After the change is completed, the denitrification agent is injected to the direct injection point associated with the specified rotation angle, and the injection amount is PS i .

[0007] Preferably, it also includes: The flue gas temperature monitoring terminal monitors the flue gas temperature generated in the glass furnace and transmits the monitored flue gas temperature to the temperature data processing terminal; The temperature data processing end monitors the flue gas temperature data at the inlet of the reaction chamber and the flue gas temperature data at the outlet of the reaction chamber at the same time in the past period, and confirms the temperature characteristic data that the reaction chamber can absorb based on the monitored flue gas temperature data, and based on the confirmed temperature characteristic data, evaluates whether the heat exchange temperature of the heat exchanger needs to be controlled. The specific method is as follows: Based on the current moment, confirm the inlet flue gas temperature and outlet flue gas temperature associated with different moments in a certain period in the past, where the certain period is the preset period, and calibrate the inlet flue gas temperature as JK t , the outlet flue gas temperature is calibrated as CK t , where t represents different moments, using JK t -CK t =Cz tConfirm the temperature difference data Cz associated with the corresponding time t , and then several groups of temperature difference data Cz t Perform mean processing to confirm the temperature characteristic data Wz; Check the temperature characteristic data Wz: if Wz>100℃, confirm its difference temperature, the difference temperature=Wz-100℃; if Wz≤100℃, calibrate its difference temperature to 0℃; Based on the difference temperature confirmed at the current moment and the preset execution temperature of the heat exchanger, the corresponding heat exchange temperature is confirmed, and the heat exchange temperature = execution temperature + difference temperature.

[0008] Preferably, the associated control end controls the execution temperature of the heat exchanger based on the heat exchange temperature confirmed at the current moment, so that the value of the execution temperature is converted into the heat exchange temperature, and performs heat exchange processing on the flue gas entering the heat exchanger at the current moment.

[0009] The present invention provides a glass kiln flue gas denitrification control system. Compared with the prior art, it has the following beneficial effects: The present invention confirms the movement rates associated with different flue gases in sequence, and based on the confirmed movement rates, confirms the movement conditions of the corresponding flue gases in the reaction chamber, and based on the specific movement process and the optimal reaction time set for the corresponding flue gases, determines the optimal point for denitration control of the corresponding flue gases, and determines the optimal control time based on the corresponding optimal point. For flue gases with different flow rates, the confirmed optimal points and the related reaction times are different, so that the designated injection pipes are controlled in real time to achieve better flue gas denitration control effects, better reaction effects, and the denitration rate of the discharged flue gases can reach the optimal state. Based on the water source generated in the corresponding denitrification reaction process, the heat absorption capacity of the corresponding water source is considered during the reaction process to determine its corresponding heat absorption characteristics, and the heat exchange temperature is changed in real time during the heat exchange process to ensure that the temperature of the water source entering the corresponding reaction chamber can reach a better and more accurate state, so that the corresponding denitrification process can reach the optimal temperature state to improve the overall effect of its denitrification control. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the principle framework of the present invention. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] First embodiment

[0013] See also Figure 1 , the present application provides a glass furnace flue gas denitrification control system, including a cross-sectional flow monitoring terminal, an associated speed analysis terminal, a direct injection data confirmation terminal, a flue gas temperature monitoring terminal, a temperature data processing terminal and an associated control terminal, wherein the cross-sectional flow monitoring terminal, the associated speed analysis terminal, the direct injection data confirmation terminal to the associated control terminal are electrically connected from the output node to the input node in sequence, wherein the flue gas temperature monitoring terminal, the temperature data processing terminal and the associated control terminal are electrically connected from the output node to the input node in sequence; Among them, the cross-sectional flow monitoring end monitors the flue gas flow rate and flue gas nitrogen oxide concentration entering the reaction chamber inlet cross-sectional area, and transmits the real-time monitored flue gas flow rate to the associated speed analysis end, and transmits the real-time monitored flue gas nitrogen oxide concentration to the direct injection data confirmation end. Specifically, the flue gas denitrification process of the glass kiln: the flue gas generated in the kiln generally contains corresponding nitrogen oxides (NOx). In the corresponding flue gas purification process, the corresponding denitrification agent needs to be used, generally ammonia (NH 3 ) or urea for related denitration. The flue gas is generated at a high temperature and will circulate in the corresponding flue gas duct. During the circulation process, it will pass through the corresponding heat exchanger for heat exchange, so that the temperature of the flue gas is reduced to the optimal reaction temperature (300-400℃). The optimal reaction time is 0.1-0.5 seconds. After the flue gas is reduced to the corresponding reaction temperature, it enters the reaction chamber. The specific denitration process is carried out in the reaction chamber. An injection pipe is arranged above the reaction chamber. The injection pipe will confirm the injection amount based on the concentration of nitrogen oxides in the corresponding flue gas, and inject denitrification agent to the designated position for reaction to purify the flue gas. The purified flue gas is discharged through the corresponding reaction chamber outlet, and the concentration of nitrogen oxides (NOx) in the purified flue gas does not exceed 300mg / m 3 ; Among them, the associated speed analysis end confirms the movement rate of the flue gas at the corresponding moment based on the real-time monitored flue gas flow rate and the cross-sectional area of ​​the reaction chamber inlet section, and then transmits the movement rate confirmed at the corresponding moment to the direct injection data confirmation end. The movement rate is determined in the following way: the cross-sectional area of ​​the reaction chamber inlet section is proposed to be M, where M is a preset value set in advance by relevant personnel in the system, and then based on the flue gas flow rate L monitored at the corresponding section i, where i represents different moments, using L i =M×V i Confirm the movement speed V of the smoke at the corresponding time i ; Among them, the direct injection data confirmation end identifies the residence time of the corresponding flue gas in the reaction chamber based on the movement rate confirmed by the relevant flue gas at the corresponding moment, and confirms the optimal direct injection point of the relevant flue gas based on the residence time, and then controls the injection amount of the optimal direct injection point based on the flue gas nitrogen oxide concentration associated with the relevant flue gas, and generates control data in real time based on the real-time processing results, and transmits the generated control data to the associated control end. Specifically, the flue gas movement rate associated with the current moment is planned to be 1, and the flue gas movement rate associated with the next moment is 2. Then, in actual control, because the flue gas associated with the next moment arrives at the specific direct injection point in advance, it is necessary to inject in advance. Its control data includes the corresponding arrival time, direct injection point and specific injection amount. The corresponding injection pipe can be rotated accordingly, so that the direct injection point can be injected; The specific sub-steps for generating control data are: Confirm the movement speed V of the smoke at the current moment i , and based on the chamber length TC in the reaction chamber, where TC is a preset value, the specific value is determined by the operator based on experience, using TC÷V i =T i Confirm the relevant time parameter T i ; The confirmed relevant time parameter T i Check with the preset reaction time F1, where F1 is a preset value. Its specific value is determined by the operator based on experience, and is generally 0.5s: If T i ≤F1, the reaction chamber entrance is taken as the direct injection point. After the direct injection point is confirmed, the direct injection point is calibrated in the reaction chamber model based on the preset reaction chamber model, and then the injection direction of the injection pipe is made consistent with this direct injection point, and its rotation angle is determined, and then the control time S is generated synchronously. i , its S i The value is 0 (representing the need for timely control and direct injection treatment. If this happens, it can only mean that there is an unreasonable situation in the design of the reaction chamber. If the length of the reaction chamber is not enough, how to achieve the effect of full reaction, so this situation generally does not occur), and based on the flue gas nitrogen oxide concentration ND monitored at the current moment i , confirm its injection amount PS i , where PS i =ND i×C1×AQ, where C1 is a preset fixed coefficient factor (this coefficient is confirmed based on the molar mass of the denitrifier used and the corresponding nitrogen oxide, and the coefficient factor is specifically confirmed based on the corresponding molar mass ratio to ensure that the mass of the corresponding reactant is in a 1:1 state), which is prepared in advance by the relevant operators, and AQ is a safety factor (in order to ensure the denitrification effect, a certain safety margin needs to be considered, so the safety factor is set), generally taking a value of 1.2, to generate the control data associated with the flue gas denitrification purification at the current moment, and the control data includes: rotation angle, control time S i and injection quantity PS i (When its rotation angle is perpendicular to the reaction chamber, it is generally 90°, and when it faces the entrance of the reaction chamber, it is generally less than 90°, which is an acute angle); If T i >F1, using TC-(V i ×F1) = XJ confirms the length data XJ of the flue gas path at the current moment, and based on this length data XJ and the reaction chamber model, confirms the distance from the reaction chamber entrance to the exit. When the confirmed distance is XJ, lock the associated point, mark the associated point as the direct injection point, and confirm the rotation angle of this direct injection point based on the reaction chamber model, and then use XJ÷V i =S i Confirm its control time, and then based on the flue gas nitrogen oxide concentration ND monitored at the current moment i Confirm the injection amount PS i The determination method is the same as T i ≤F1, and generates the control data associated with the current denitrification purification, which includes: rotation angle, control time S i and injection quantity PS i ; The control data confirmed in real time is transmitted to the associated control terminal.

[0014] The associated control end controls the injection pipe inside the reaction chamber based on the received control data, so that the corresponding flue gas is denitrated; The control mode of its associated control terminal is: Priority is given to the control time S associated with the corresponding control data. i , at the current moment, after S i Then directly control the injection pipe to change the rotation angle. After the change is completed, the denitrification agent is injected to the direct injection point associated with the specified rotation angle, and the injection amount is PS iSpecifically, what needs to be confirmed here is that it is not the flue gas associated with the previous moment that will be controlled and processed in advance. This is based on the confirmed control time Si. If the control time confirmed for the flue gas entering the reaction chamber at the previous moment is 1 second, but the control time confirmed for the flue gas entering at the next moment is 0.5 seconds, then the control logic of the associated control end is: first spray the direct injection point associated with the next moment after 0.5 seconds, and then spray the direct injection point associated with the previous moment after 1 second to complete the denitrification purification process of the corresponding flue gas.

[0015] Second embodiment

[0016] In the actual purification process, whether it is ammonia or urea, water will be produced in the actual reaction process. Water is a good heat-absorbing medium, so in the reaction process, the water produced will also absorb part of the heat. Therefore, when controlling the temperature, it is necessary to consider the specific amount of water inside the reaction chamber to perform the associated control of the temperature data, so as to effectively control the temperature in the flue gas denitrification purification process; Among them, the flue gas temperature monitoring end monitors the flue gas temperature generated in the glass kiln. This part of the monitoring process requires the use of a specific monitoring sensor, which has strong heat resistance. The monitoring sensor is set in the flue gas duct and located at a relevant position before the heat exchanger. After completing the temperature monitoring, the corresponding flue gas will flow into the corresponding heat exchanger and transmit the monitored flue gas temperature to the temperature data processing end; Among them, the temperature data processing end monitors the flue gas temperature data at the inlet of the reaction chamber and the flue gas temperature data at the outlet of the reaction chamber at the same time in the past certain period, and confirms the temperature characteristic data that the reaction chamber can absorb based on the monitored flue gas temperature data, and based on the confirmed temperature characteristic data, evaluates whether it is necessary to control the heat exchange temperature of the heat exchanger, and determines the heat exchange temperature of the heat exchanger to be transmitted to the associated control end. Specifically, when there is water in the reaction chamber, a large amount of heat absorption will be generated, thereby effectively reducing the temperature of the flue gas. However, when the flue gas is undergoing a denitrification reaction, it needs to be carried out at an appropriate temperature. Therefore, when performing heat exchange, it is necessary to confirm the relevant heat exchange temperature to ensure the specific heat exchange effect. The specific method for confirming the temperature characteristic data that the reaction chamber can absorb is: Based on the current moment, confirm the inlet flue gas temperature and outlet flue gas temperature associated with different moments in a certain period in the past. The certain period is the preset period, and its specific value is determined by the operator based on experience. The inlet flue gas temperature is calibrated as JK t , the outlet flue gas temperature is calibrated as CK t , where t represents different moments, using JK t -CK t =Cz t Confirm the temperature difference data Cz associated with the corresponding timet , and then several groups of temperature difference data Cz t Perform mean processing to confirm the temperature characteristic data Wz; Check the temperature characteristic data Wz: if Wz>100℃, confirm its difference temperature, the difference temperature=Wz-100℃; if Wz≤100℃, calibrate its difference temperature to 0℃; Based on the difference temperature confirmed at the current moment and the preset execution temperature of the heat exchanger, the corresponding heat exchange temperature is confirmed. The heat exchange temperature = execution temperature + difference temperature. The execution temperature is generally 400°C, and the execution temperature is preset in advance by the relevant operators.

[0017] Among them, the associated control end controls the execution temperature of the heat exchanger based on the heat exchange temperature confirmed at the current moment, so that the numerical value of the execution temperature is converted into the heat exchange temperature, and performs heat exchange treatment on the flue gas entering the heat exchanger at the current moment. This real-time confirmation of the heat exchange temperature can fully guarantee the corresponding reaction temperature and the reaction effect. It can not only ensure that the reaction is sufficient, but also ensure that the reaction temperature is accurate enough to achieve a better denitrification control effect.

[0018] Some of the data in the above formulas are dimensionless and numerically calculated. Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0019] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. Glass kiln flue gas denitrification control system, characterized in that: include: The cross-sectional flow monitoring terminal monitors the flue gas flow rate and flue gas nitrogen oxide concentration entering the reaction chamber inlet cross-sectional area. The real-time monitored flue gas flow rate is transmitted to the associated speed analysis terminal, and the real-time monitored flue gas nitrogen oxide concentration is transmitted to the direct injection data confirmation terminal. The associated speed analysis terminal determines the movement speed of the flue gas at the corresponding time based on the real-time monitored flue gas flow rate and the cross-sectional area of ​​the reaction chamber inlet section, and then transmits the movement speed determined at the corresponding time to the direct injection data confirmation terminal; The direct injection data confirmation terminal identifies the residence time of the corresponding flue gas in the reaction chamber based on the movement rate confirmed by the relevant flue gas at the corresponding moment, and confirms the optimal direct injection point of the relevant flue gas based on the residence time, and then controls the injection amount of the optimal direct injection point based on the flue gas nitrogen oxide concentration associated with the relevant flue gas, and generates control data in real time based on the real-time processing results, and transmits the generated control data to the associated control terminal; The associated control terminal controls the injection pipe inside the reaction chamber based on the received control data, so that the corresponding flue gas is denitrated.

2. The glass furnace flue gas denitrification control system according to claim 1, characterized in that: The specific method of determining the movement speed of the smoke at the corresponding moment by the associated speed analysis terminal is: The cross-sectional area of ​​the proposed anti-sense warehouse entrance section is M, where M is a preset value, and then based on the smoke flow rate L monitored at the corresponding section i , where i represents different moments, using L i =M×V i Confirm the movement speed V of the smoke at the corresponding time i .

3. The glass furnace flue gas denitrification control system according to claim 2, characterized in that: The specific method of generating control data at the direct injection data confirmation terminal is as follows: Confirm the movement speed V of the smoke at the current moment i , and based on the chamber length TC in the reaction chamber, where TC is a preset value, TC÷V i =T i Confirm the relevant time parameter T i ; The confirmed relevant time parameter T i Check with the preset reaction time F1, where F1 is the preset value; If T i ≤F1, the reaction chamber entrance is taken as the direct injection point. After the direct injection point is confirmed, the direct injection point is calibrated in the reaction chamber model based on the preset reaction chamber model, and then the injection direction of the injection pipe is made consistent with this direct injection point, and its rotation angle is determined, and then the control time S is generated synchronously. i , its S i The value is 0 and is based on the flue gas nitrogen oxide concentration ND monitored at the current moment. i , confirm its injection amount PS i , where PS i =ND i ×C1×AQ, where C1 is the preset fixed coefficient factor, and AQ is the safety factor, which is 1.

2. The control data associated with the flue gas denitrification purification at the current moment is generated. The control data includes: rotation angle, control time S i and injection quantity PS i ; If T i >F1, using TC-(V i ×F1) = XJ confirms the length data XJ of the flue gas path at the current moment, and based on this length data XJ and the reaction chamber model, confirms the distance from the reaction chamber entrance to the exit. When the confirmed distance is XJ, lock the associated point, mark the associated point as the direct injection point, and confirm the rotation angle of this direct injection point based on the reaction chamber model, and then use XJ÷V i =S i Confirm its control time, and then based on the flue gas nitrogen oxide concentration ND monitored at the current moment i Confirm the injection amount PS i The determination method is the same as T i ≤F1, and generates the control data associated with the current denitrification purification, which includes: rotation angle, control time S i and injection quantity PS i ; The control data confirmed in real time is transmitted to the associated control terminal.

4. The glass furnace flue gas denitrification control system according to claim 3 is characterized in that: The associated control end is preferentially based on the control time S associated with the corresponding control data. i , at the current moment, after S i Then directly control the injection pipe to change the rotation angle. After the change is completed, the denitrification agent is injected to the direct injection point associated with the specified rotation angle, and the injection amount is PS i .

5. The glass furnace flue gas denitrification control system according to claim 1, characterized in that: Also includes: The flue gas temperature monitoring terminal monitors the flue gas temperature generated in the glass furnace and transmits the monitored flue gas temperature to the temperature data processing terminal; The temperature data processing end monitors the flue gas temperature data at the inlet of the reaction chamber and the flue gas temperature data at the outlet of the reaction chamber at the same time in the past certain period, and based on the monitored flue gas temperature data, confirms the temperature characteristic data that the reaction chamber can absorb, and based on the confirmed temperature characteristic data, evaluates whether it is necessary to control the heat exchange temperature of the heat exchanger, and determines the heat exchange temperature of the heat exchanger and transmits it to the associated control end.

6. The glass furnace flue gas denitrification control system according to claim 5, characterized in that: The specific method of confirming the heat exchange temperature at the temperature data processing end is: Based on the current moment, confirm the inlet flue gas temperature and outlet flue gas temperature associated with different moments in a certain period in the past, where the certain period is the preset period, and calibrate the inlet flue gas temperature as JK t , the outlet flue gas temperature is calibrated as CK t , where t represents different moments, using JK t -CK t =Cz t Confirm the temperature difference data Cz associated with the corresponding time t , and then several groups of temperature difference data Cz t Perform mean processing to confirm the temperature characteristic data Wz; Check the temperature characteristic data Wz: if Wz>100℃, confirm its difference temperature, the difference temperature=Wz-100℃; if Wz≤100℃, calibrate its difference temperature to 0℃; Based on the difference temperature confirmed at the current moment and the preset execution temperature of the heat exchanger, the corresponding heat exchange temperature is confirmed, and the heat exchange temperature = execution temperature + difference temperature.

7. The glass furnace flue gas denitrification control system according to claim 6, characterized in that: The associated control end controls the execution temperature of the heat exchanger based on the heat exchange temperature confirmed at the current moment, so that the value of the execution temperature is converted into the heat exchange temperature, and performs heat exchange processing on the flue gas entering the heat exchanger at the current moment.

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