Flue Gas Denitration Control System for Glass Furnace

Abstract

The present invention discloses a denitration control system for the flue gas of a glass furnace. The present invention relates to the technical field of flue gas denitration control, and solves the problem of not determining the optimal reaction space points for flue gas at different speeds. The present invention sequentially confirms the movement speeds associated with different flue gases, and based on the confirmed movement speeds, confirms the movement conditions of the corresponding flue gas in the reaction chamber. Based on the specific movement process and the set optimal reaction time for the corresponding flue gas, the optimal points for the corresponding flue gas to carry out denitration control are determined, and based on the corresponding optimal points, the optimal control time is determined. For flue gases with different flow rates, the confirmed optimal points and related reaction times are different. Thus, the designated injection pipe is controlled in real time to achieve a better flue gas denitration control effect, make the reaction effect better, and enable the denitration rate of the discharged flue gas to reach the best state.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas denitration control, and specifically to a flue gas denitration control system for glass furnaces. Background Art

[0002] The main objective of flue gas denitration control is to reduce the concentration of nitrogen oxides in the flue gas of glass furnaces to below the specified emission standards, while minimizing the use of denitration 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 denitration ammonia injection control system for glass furnaces that eliminates time lag, which relates to the technical field of flue gas denitration; it includes a data acquisition and sorting module for collecting and sorting the temperature and flue gas composition at multiple positions inside the furnace; a distribution field simulation module for analyzing and simulating the temperature field distribution inside the furnace and the flue gas composition at each position inside the furnace based on the temperature field according to the collected data; a data correlation module for performing correlation analysis on the temperature distribution inside the furnace and the properties of the mixed flue gas at the corresponding temperature, and calculating the flue gas velocity at any position of the mixed flue gas inside the furnace; a predictive control module for predicting the composition of the mixed flue gas at the flue gas outlet at any moment and accurately controlling the ammonia injection amount based on this; this invention accurately determines the composition of the discharged flue gas, accurately calculates the time delay value, eliminates the time lag of the ammonia injection amount, avoids the problems of ammonia escape or incomplete denitration, and at the same time reduces production costs and saves resources.

[0004] When controlling the flue gas denitration of glass furnaces, generally based on the running speed of the corresponding flue gas in the pipeline, the specific concentration data is confirmed to lock the corresponding ammonia injection amount. However, in actual processing, there are still certain problems: the flue gas entering the reaction chamber will react immediately. During the reaction process, if the retention time of the corresponding flue gas is too long, there will be an overreaction situation. The optimal reaction space points are not determined for flue gases with different speeds, and the specific reaction area is not confirmed to ensure that the corresponding flue gas can not only be denitrified but also avoid overreaction. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a flue gas denitration control system for glass furnaces, which solves the problem of not determining the optimal reaction space points for flue gases with different speeds.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A flue gas denitration control system for glass furnaces, including:

[0007] The cross-sectional flow monitoring end monitors the flue gas flow and the concentration of nitrogen oxides in the flue gas entering at the cross-section of the reaction chamber inlet. The real-time monitored flue gas flow is transmitted to the associated speed analysis end, and the real-time monitored flue gas nitrogen oxide concentration is transmitted to the direct injection data confirmation end;

[0008] The associated speed analysis end determines the movement speed of the flue gas at the corresponding moment based on the real-time monitored flue gas flow and the cross-sectional area of the reaction chamber inlet cross-section, and then transmits the determined movement speed at the corresponding moment to the direct injection data confirmation end. The specific method is as follows:

[0009] It is assumed that the cross-sectional area of the anti-chamber inlet cross-section is M, where M is a preset value, and then based on the flue gas flow L monitored at the corresponding cross-section i , where i represents different moments, using L i =M×V i to determine the movement speed V of the flue gas at the corresponding moment i ;

[0010] The direct injection data confirmation end identifies the residence time of the corresponding flue gas in the reaction chamber based on the movement speed of the relevant flue gas at the corresponding moment, and determines the optimal direct injection point of the relevant flue gas based on the residence time. Then, based on the nitrogen oxide concentration of the flue gas associated with the relevant flue gas, it controls the injection volume of the optimal direct injection point, and generates control data in real time based on the real-time processing results. The specific method is as follows:

[0011] Determine the movement speed V of the flue gas confirmed at the current moment i , and based on the chamber length TC in the reaction chamber, where TC is a preset value, use TC÷V i =T i to determine the relevant time parameter T i ;

[0012] Compare the determined relevant time parameter T i with the preset reaction time F1, where F1 is a preset value;

[0013] If T i ≤F1, then take the reaction chamber inlet as the direct injection point. After the direct injection point is confirmed, based on the preset reaction chamber model, mark the direct injection point in the reaction chamber model, then make the injection direction of the injection pipe consistent with this direct injection point, and determine its rotation angle, and then synchronously generate the control time S i , where S i takes the value 0, and based on the nitrogen oxide concentration ND of the flue gas monitored at the current moment i , determine its injection volume PS i , where PS i =ND i×C1×AQ, where C1 is a preset fixed coefficient factor and AQ is a safety factor with a value of 1.2, to generate control data associated with the flue gas denitrification purification at the current moment. The control data includes: rotation angle, control time S i and injection volume PS i ;

[0014] If T i > F1, use TC - (V i ×F1) = XJ to confirm the length data XJ that the flue gas can travel at the current moment, and based on this length data XJ and the reaction chamber model, confirm the distance from the inlet to the outlet of the reaction chamber. When the confirmed distance is XJ, lock the associated point, mark the associated point as the direct injection point, and based on the reaction chamber model, confirm the rotation angle of this direct injection point. Then use XJ÷V i = S i to confirm its control time, and then based on the flue gas nitrogen oxide concentration ND i monitored at the current moment i confirm its injection volume PS i The determination method is the same as when T i ≤ F1, to generate control data associated with the denitrification purification at the current moment. The control data includes: rotation angle, control time S i and injection volume PS i ;

[0015] Transmit the control data confirmed in real time to the associated control terminal;

[0016] The associated control terminal controls the injection pipe inside the reaction chamber based on the received control data to perform denitrification treatment on the corresponding flue gas; preferably based on the control time S i associated with the corresponding control data i After S at the current moment, directly control the injection pipe to make relevant changes in the rotation angle. After the change is completed, inject the denitrifying agent towards the direct injection point associated with the specified rotation angle, and the injection volume is PS i .

[0017] Preferably, it further includes:

[0018] A flue gas temperature monitoring terminal monitors the temperature of the flue gas generated in the glass furnace and transmits the monitored flue gas temperature to the temperature data processing terminal;

[0019] The temperature data processing terminal 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 moment within a certain past 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. The specific method is as follows:

[0020] Based on the current moment, confirm the inlet flue gas temperature and the outlet flue gas temperature associated with different moments within a certain past period. The certain period is a preset period, and calibrate the inlet flue gas temperature as JK t , and calibrate the outlet flue gas temperature as CK t , where t represents different moments, and use JK t - CK t = Cz t Confirm the temperature difference data Cz associated with the corresponding moment t , and then perform mean processing on several groups of temperature difference data Cz t to confirm the temperature characteristic data Wz;

[0021] Conduct a verification process on the temperature characteristic data Wz: If Wz > 100°C, then confirm its differential temperature, and its differential temperature = Wz - 100°C. If Wz ≤ 100°C, then calibrate its differential temperature as 0°C;

[0022] Based on the differential temperature confirmed at the current moment and the preset execution temperature of the heat exchanger, confirm its corresponding heat exchange temperature, and its heat exchange temperature = execution temperature + differential temperature.

[0023] 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 its execution temperature changes to the heat exchange temperature, and conducts heat exchange processing on the flue gas entering the heat exchanger at the current moment.

[0024] The present invention provides a glass furnace flue gas denitration control system. Compared with the prior art, it has the following beneficial effects:

[0025] The present invention successively confirms the movement rates associated with different flue gases, and based on the confirmed movement rates, confirms the movement conditions of the corresponding flue gases in the reaction chamber. Based on the specific movement process and the set optimal reaction time for the corresponding flue gases, determine the optimal points for denitration control of the corresponding flue gases, and based on the corresponding optimal points, determine the optimal control time. For flue gases with different flow rates, the confirmed optimal points and related reaction times are all different, so as to conduct real-time control on the designated injection pipe to achieve a better flue gas denitration control effect, make the reaction effect better, and enable the denitration rate of the discharged flue gas to reach the best state;

[0026] Based on the water source generated during the corresponding denitrification reaction process, during the reaction process, the heat absorption capacity of the corresponding water source is considered to determine its corresponding heat absorption characteristics. During the heat exchange process, the heat exchange temperature is changed in real time to ensure that the temperature of the water source entering the corresponding reaction chamber can reach a better accurate state, so that the corresponding denitrification process reaches the optimal temperature state and the overall effect of denitrification control is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the principle framework of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] The First Embodiment

[0030] Please refer to Figure 1 , this application provides a glass furnace flue gas denitrification control system, including a cross-sectional flow monitoring end, a related speed analysis end, a direct injection data confirmation end, a flue gas temperature monitoring end, a temperature data processing end, and a related control end. Among them, the cross-sectional flow monitoring end, the related speed analysis end, and the direct injection data confirmation end to the related control end are electrically connected in sequence from the output node to the input node, and among them, the flue gas temperature monitoring end, the temperature data processing end, and the related control end are electrically connected in sequence from the output node to the input node;

[0031] Among them, the cross-sectional flow monitoring end monitors the flue gas flow rate and the flue gas nitrogen oxide concentration entering the cross-section at the inlet of the reaction chamber, and transmits the real-time monitored flue gas flow rate to the related speed analysis end, and transmits the real-time monitored flue gas nitrogen oxide concentration to the direct injection data confirmation end. Specifically, the glass furnace flue gas denitrification process: the flue gas generated in the furnace generally contains corresponding nitrogen oxides (NOx). During the corresponding flue gas purification process, a corresponding denitrifying agent needs to be used, generally ammonia (NH 3)(or urea) for relevant denitrification. After the flue gas is generated, it has a relatively high temperature and will flow through the corresponding flue gas pipeline. During the flowing process, it will pass through the corresponding heat exchanger for heat exchange, so as to reduce the temperature of the flue gas to the optimal reaction temperature (300 - 400 °C). Its 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 denitrification process is carried out in the reaction chamber. There is a spray pipe above the reaction chamber. The spray pipe will confirm the spraying amount based on the concentration of nitrogen oxides in the corresponding flue gas and spray the denitrifying agent at the specified position for reaction to purify the flue gas. The purified flue gas is discharged through the corresponding outlet of the reaction chamber, and the concentration of nitrogen oxides (NOx) in the purified flue gas does not exceed 300 mg / m 3 ;

[0032] Among them, the associated speed analysis terminal confirms the movement speed 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 speed confirmed at the corresponding moment to the direct injection data confirmation terminal. The determination method of the movement speed is as follows: assume that the cross-sectional area of the reaction chamber inlet section is M, and M is a preset value set in the system in advance by relevant personnel. Then, based on the flue gas flow rate L monitored at the corresponding section i , where i represents different moments, and L i =M×V i is used to confirm the movement speed V of the flue gas at the corresponding moment i ;

[0033] Among them, the direct injection data confirmation terminal identifies the residence time of the corresponding flue gas in the reaction chamber based on the movement speed of the relevant flue gas confirmed 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 concentration of nitrogen oxides in the relevant flue gas, it controls the injection amount of the optimal direct injection point, and generates control data in real time based on the real-time processing result, and transmits the generated control data to the associated control terminal. Specifically, assume that the movement speed of the flue gas associated with the current moment is 1, and the movement speed of the flue gas associated with the next moment is 2. Then, during 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. The control data includes the corresponding arrival duration, direct injection point, and specific injection amount. The corresponding spray pipe can rotate, so as to perform spraying treatment on the direct injection point;

[0034] Among them, the specific sub-steps for generating control data are as follows:

[0035] Confirm the movement speed V of the flue gas confirmed at the current moment i , and based on the length TC of the chamber body in the reaction chamber, where TC is a preset value, and its specific value is determined by the operator according to experience. Use TC÷V i =T iConfirm the relevant time parameter T i ;

[0036] Compare the confirmed relevant time parameter T i with the preset reaction time F1, where F1 is a preset value, and its specific value is determined by the operator according to experience, generally taking 0.5 s:

[0037] If T i ≤F1, then take the reaction chamber inlet as the direct injection point. After the direct injection point is confirmed, based on the preset reaction chamber model, calibrate the direct injection point in the reaction chamber model, then make the injection direction of the injection pipe consistent with this direct injection point, and determine its rotation angle, and then synchronously generate the control time S i , where S i takes the value of 0 (representing that control needs to be carried out in a timely manner and direct injection treatment is carried out. If such a situation occurs, it only means that there is an unreasonable situation in the design of the reaction chamber. If the length in 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 i monitored at the current moment, confirm its injection volume 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 masses of the denitration agent and the corresponding nitrogen oxides, and the specific coefficient factor is confirmed based on the corresponding molar mass ratio to ensure that the mass of the corresponding reactants is in a 1:1 state), which is determined by the relevant operator in advance, and AQ is a safety factor (in order to ensure the denitration effect, a certain safety margin needs to be considered, so a safety factor is set), generally taking 1.2, and generate the control data related to the flue gas denitration purification at the current moment, and the control data includes: rotation angle, control time S i and injection volume PS i (when the rotation angle is perpendicular to the reaction chamber, it is generally 90°, and when it faces the reaction chamber inlet, it is generally less than 90°, which is an acute angle);

[0038] If T i >F1, use TC - (V i ×F1)=XJ to confirm the length data XJ that the corresponding flue gas can travel at the current moment, and based on this length data XJ and the reaction chamber model, confirm the distance from the reaction chamber inlet to the outlet. When the confirmed distance is XJ, lock the associated point, calibrate 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 to confirm its control time, and then based on the flue gas nitrogen oxide concentration ND iConfirm its injection volume PS i The determination method is the same as that of T i When ≤ F1, generate the control data associated with the denitrification purification corresponding to the current moment. The control data includes: rotation angle, control time S i And injection volume PS i ;

[0039] Transmit the control data confirmed in real time to the associated control terminal.

[0040] Among them, the associated control terminal controls the injection pipe inside the reaction chamber based on the received control data to perform denitrification treatment on the corresponding flue gas;

[0041] The control method of its associated control terminal is:

[0042] Give priority to the control time S associated with the corresponding control data i , after S at the current moment i , directly control the injection pipe to make relevant changes in the rotation angle. After the change is completed, inject the denitrifying agent to the direct injection point associated with the specified rotation angle, and its injection volume is PS i , specifically, it needs to be confirmed here that the flue gas associated with the previous moment will not be controlled in advance. Here, it is based on the confirmed control time Si. If the confirmed control time of the flue gas entering the reaction chamber at the previous moment is 1 second, but the confirmed control time of the flue gas entering at the next moment is 0.5 second, then the control logic of the associated control terminal is: give priority to injecting at the direct injection point associated with the next moment after 0.5 second, and then inject at the direct injection point associated with the previous moment after 1 second to complete the denitrification purification process of the corresponding flue gas.

[0043] Second embodiment

[0044] In the actual purification process, whether it is ammonia or urea, water will be generated during the actual reaction. Water is a good heat-absorbing medium. Therefore, during the reaction process, the generated water will also absorb part of the heat. Therefore, when controlling the temperature, the specific water volume inside the reaction chamber needs to be considered to perform associated control of the temperature data, so as to effectively control the temperature during the flue gas denitrification purification process;

[0045] Among them, the flue gas temperature monitoring terminal monitors the temperature of the flue gas generated in the glass furnace. This part of the monitoring process needs to use a specific monitoring sensor. The monitoring sensor has strong heat resistance. The monitoring sensor is set in the flue gas pipeline and at a relevant position before the heat exchanger. After the temperature monitoring is completed, the corresponding flue gas will flow into the corresponding heat exchanger, and the monitored flue gas temperature will be transmitted to the temperature data processing terminal;

[0046] Among them, the temperature data processing end monitors the flue gas temperature data at the inlet of its reaction chamber and the flue gas temperature data at the outlet of the reaction chamber at the same time within a certain past period, and based on the monitored flue gas temperature data, confirms the temperature characteristic data that its reaction chamber can absorb. And based on the confirmed temperature characteristic data, it evaluates whether it is necessary to control the heat exchange temperature of the heat exchanger, and determines the heat exchange temperature of its heat exchanger and transmits it to the associated control end. Specifically, when there is water in the reaction chamber, a large amount of heat absorption will occur, which will effectively reduce the temperature of the flue gas. However, when the flue gas undergoes denitrification reaction, it needs to be carried out at an appropriate temperature. Therefore, when carrying out 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 as follows:

[0047] Based on the current moment, confirm the inlet flue gas temperature and the outlet flue gas temperature associated with different moments within a certain past period. The certain period is a preset period, and its specific value is determined by the operator according to experience. Calibrate the inlet flue gas temperature as JK t , and calibrate the outlet flue gas temperature as CK t , where t represents different moments, and use JK t -CK t =Cz t Confirm the temperature difference data Cz associated with the corresponding moment t , and then perform mean processing on several groups of temperature difference data Cz t to confirm the temperature characteristic data Wz;

[0048] Conduct a verification process on the temperature characteristic data Wz: If Wz > 100°C, then confirm the difference temperature, and the difference temperature = Wz - 100°C. If Wz ≤ 100°C, then calibrate the difference temperature as 0°C;

[0049] Based on the difference temperature confirmed at the current moment and the preset execution temperature of the heat exchanger, confirm the corresponding heat exchange temperature. The heat exchange temperature = execution temperature + difference temperature. The execution temperature generally takes a value of 400°C, and the execution temperature is preset by the relevant operator in advance.

[0050] 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 value of the execution temperature changes to the heat exchange temperature, and conducts heat exchange processing on the flue gas entering this heat exchanger at the current moment. This real-time confirmation method of the heat exchange temperature can fully guarantee the corresponding reaction temperature and fully guarantee the reaction effect. It can not only ensure that the reaction is sufficient enough, but also ensure that the reaction temperature is accurate enough to achieve a better denitrification control effect.

[0051] Some of the data in the above formula are numerically calculated after removing their dimensions, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0052] 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 of ordinary skill in the art should understand that the technical method of the present invention can be modified or equivalently replaced 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 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 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, specifically in the following manner: 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 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 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 .

3. 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.

4. The glass furnace flue gas denitrification control system according to claim 3 is 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.

5. The glass furnace flue gas denitrification control system according to claim 4, 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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