Smoke detection and analysis system in double-chamber kiln

Abstract

This invention discloses a flue gas detection and analysis system for a double-chamber kiln. This invention relates to the field of double-chamber kiln technology and solves the problems of not selecting the optimal adjustment value during the adjustment process and not identifying the cause of related anomalies based on the specific adjustment process. This invention monitors the flue gas inside the kiln and, based on specific monitoring values, assesses whether the values ​​inside the kiln are abnormal. If anomalies are found, it confirms the changes in oxygen and carbon monoxide concentrations from historical data and identifies the optimal oxygen concentration adjustment value from the specific changes. Subsequently, based on the determined specific value, the oxygen concentration is adjusted to rapidly reduce the corresponding carbon monoxide concentration, effectively controlling the combustion environment of the flue gas inside the kiln and ensuring that the combustion environment remains in an optimal state, achieving better combustion treatment results.

Description

Technical Field

[0001] The invention relates to the technical field of double-chamber kilns, in particular to a smoke detection and analysis system in a double-chamber kiln. Background Art

[0002] The double-chamber kiln is mainly composed of two kiln chambers connected by a passage in the middle. Each kiln chamber has an independent feed port, discharge port, combustion system and ventilation system. The kiln body is generally made of high temperature resistant and corrosion resistant materials to adapt to the high temperature and chemical corrosion environment during the lime calcining process;

[0003] The double-chamber kiln adopts the principle of parallel flow heat storage calcination. Fuel and combustion-supporting air enter from the top of one kiln chamber, flow downward in parallel with the limestone material, and calcine. The high-temperature exhaust gas after calcination enters the other kiln chamber through the channel, exchanges heat with the limestone material in the kiln chamber, transfers heat to the material, and preheats it. The preheated limestone enters the kiln chamber that has been calcined for the next calcination, and continues the calcination reaction. In this way, the double-chamber kiln can make full use of the heat in the exhaust gas, improve energy utilization efficiency, and reduce energy consumption.

[0004] The application with publication number CN221006971 U discloses a rotary kiln smoke detection and analysis system, including a sampling device, a sampling flow path system, a three-way solenoid valve, an electronic dehumidifier, a sulfur filter, a membrane filter and a detection instrument, wherein the sampling device is connected to the sampling flow path system, the sampling flow path system is connected to the three-way solenoid valve, the three-way solenoid valve is connected to the electronic dehumidifier, the electronic dehumidifier is connected to the sulfur filter, the sulfur filter is connected to the membrane filter, and the membrane filter is connected to the detection instrument; the sampling device includes a first flue gas sampling probe and a second flue gas sampling probe arranged at intervals along the length direction of the flue gas pipeline, and the sampling flow path system includes a flow path 1 and a flow path 2 arranged in parallel, the flow path 1 is connected to the first flue gas sampling probe, and the flow path 2 is connected to the second flue gas sampling probe. The system has the advantages of small maintenance, accurate measurement data, continuity of analysis data, and low maintenance cost.

[0005] During the relevant detection process of the flue gas in the double-chamber kiln, the combustion environment and combustion temperature are adjusted in real time based on the monitoring results to ensure the normal combustion of the materials in the kiln and reduce the generation of harmful gases. However, this processing method does not select the best adjustment value in the adjustment process, nor does it lock the relevant abnormal causes based on the specific adjustment process and display the abnormal signals. The comprehensiveness of its detection needs to be enhanced. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a smoke detection and analysis system for a double-chamber kiln, which solves the problem of not selecting the best adjustment value in the adjustment process and not locking the relevant abnormal causes based on the specific adjustment process.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a smoke detection and analysis system in a double-chamber kiln, comprising:

[0008] The parameter monitoring end monitors the carbon monoxide concentration in the double-chamber kiln in real time, and based on the real-time monitored carbon monoxide concentration, evaluates whether the carbon monoxide concentration exceeds the standard, and generates a related exceeding standard signal to be transmitted to the control value confirmation end. The specific method is as follows:

[0009] The carbon monoxide concentration monitored at the current moment is calibrated as N i , where i represents different moments, and the real-time monitored N i Compare with the preset standard value Y1:

[0010] If N i When ≥Y1, it means that the carbon monoxide concentration monitored at the current moment has exceeded the standard, and an exceeding standard signal is generated, and the generated concentration exceeding standard signal is transmitted to the control value confirmation terminal;

[0011] If N i <Y1, then continue monitoring;

[0012] The control value confirmation end, based on the generated over-standard signal, identifies the different oxygen concentrations corresponding to the current carbon monoxide concentration from the historical completion data, and then locks the optimal oxygen concentration control value based on the specific changes in the carbon monoxide concentration and oxygen concentration, and transmits the oxygen concentration control value to the oxygen control end. The specific method is as follows:

[0013] The receiving time of the exceeding standard signal is calibrated as the processing time, and the carbon monoxide concentration corresponding to the processing time is calibrated as YD;

[0014] From the historical completion data, identify the different carbon monoxide concentrations corresponding to the different oxygen concentrations at the same time, and generate the oxygen concentration change curve and the carbon monoxide concentration change curve;

[0015] Based on this YD, select the same numerical point on the carbon monoxide concentration change curve, determine the corresponding time corresponding to this numerical point, calibrate the corresponding time as the standard time, identify the oxygen concentration corresponding to the standard time from the oxygen concentration change curve and calibrate it as the standard concentration, determine the partial curve segment where the standard concentration is located, select the partial curve segment where the oxygen concentration value is in a climbing state as the oxygen concentration segment to be processed, and select the associated carbon monoxide concentration segment to be processed from the carbon monoxide concentration change curve based on the time corresponding to the front and rear endpoints of the oxygen concentration segment to be processed;

[0016] The oxygen concentration corresponding to the oxygen concentration section to be processed and the carbon monoxide concentration section to be processed at the same time is calibrated as ND k, the carbon monoxide concentration is calibrated as HT k , where k represents the same moment in the corresponding concentration range, using P k =ND k ÷HT k Determine its rating value P k , the corresponding groups of evaluation values ​​P corresponding to the oxygen concentration section to be processed k Perform mean processing to determine the associated mean Jz;

[0017] Then, the oxygen concentration segment to be processed with the maximum value of the associated mean value Jz is taken as the standard segment, and the oxygen concentration N1 corresponding to the initial point of the standard segment is determined, and the oxygen concentration N2 corresponding to the end point of the standard segment is determined, and then the duration T of this standard segment is determined, and TJ=(N2-N1)÷T is used to determine the optimal oxygen concentration control value TJ, and this TJ is transmitted to the oxygen control terminal;

[0018] The oxygen control end gradually controls the oxygen concentration in the double-chamber kiln based on the determined oxygen concentration control value and stops when the carbon monoxide concentration reaches the standard;

[0019] The trend change analysis end performs trend analysis on the changes in oxygen concentration and carbon monoxide concentration during the control process to assess whether the changes in carbon monoxide concentration are normal. If abnormal, a secondary trend analysis process is performed;

[0020] The secondary trend analysis process includes:

[0021] The oxygen concentration is controlled by the oxygen control end so that the oxygen concentration rises and then decreases within the set time period, and the oxygen concentration control process of three sets of set time periods is performed, and the three sets of set time periods are continuous time periods, and the set time periods are preset time periods;

[0022] At the trend change analysis end, based on the numerical control changes of the oxygen concentration in the secondary trend analysis process, the changes in the carbon monoxide concentration in the kiln are re-analyzed to assess whether the changes in the carbon monoxide concentration are related to the numerical control changes of the oxygen concentration, and based on the specific assessment results, assess whether there is leakage or abnormal cooling in the double-chamber kiln; the specific method is as follows:

[0023] Determine the initial moment and the final moment in the control process, from the initial moment to the final moment, the oxygen concentration is in a constant climbing state;

[0024] Identify whether the carbon monoxide concentration is in a continuous decreasing state during the entire change period from the initial moment to the final moment. If so, it means that the change of the carbon monoxide concentration is normal and no treatment is required. If not, it means that the change of the carbon monoxide concentration is abnormal, and the oxygen control end is executed again and a secondary trend analysis is performed.

[0025] Preferably, the trend change analysis end evaluates whether there is air leakage in the double-chamber kiln in a specific manner as follows:

[0026] Based on the specific adjustment process of oxygen concentration during the secondary trend analysis, the oxygen concentration climbing period and the falling period are confirmed and calibrated one by one;

[0027] Then, based on the monitored carbon monoxide concentration, the change of carbon monoxide is determined, and the rising period and the falling period of carbon monoxide in this regulation process are identified;

[0028] Identify the time difference of the same time period in the carbon monoxide concentration and oxygen concentration, and the time difference is greater than 0, sum the time difference of several climbing time periods and the time difference of the descending time period, determine the total time difference, and evaluate whether the total time difference meets the following requirements:

[0029] Total time difference>Y2, where Y2 is the preset value;

[0030] If it is satisfied, a kiln leakage signal will be generated through the signal terminal and displayed directly.

[0031] Preferably, the trend change analysis end evaluates whether there is leakage or abnormal cooling in the double-chamber kiln in a specific manner as follows:

[0032] If the total time difference is ≤Y2, a cooling abnormality signal is generated through the signal terminal and displayed directly.

[0033] The present invention provides a smoke detection and analysis system for a double-chamber kiln. Compared with the prior art, it has the following advantages:

[0034] Beneficial effects:

[0035] The present invention monitors the flue gas in the kiln, and based on the specific monitoring values, evaluates whether the values ​​in the kiln are abnormal. If there is an abnormality, the change data of the oxygen concentration and the carbon monoxide concentration are confirmed from the historical completion data, and the optimal oxygen concentration adjustment value is identified from the specific change data. Subsequently, based on the determined specific values, the oxygen concentration is regulated to quickly reduce the corresponding carbon monoxide concentration, and the combustion environment of the flue gas in the kiln is effectively controlled, so that the combustion environment is continuously in the best state, and a better combustion treatment effect is achieved;

[0036] Analyze the related parameters in the specified control process, identify whether the concentration of carbon monoxide changes in correlation with the oxygen concentration, and based on the specific identification results, assess whether the carbon monoxide changes abnormally. Based on the specific assessment results, determine the specific abnormal situation in the kiln, and generate relevant processing signals in real time for display for external personnel to view and take timely response measures, which can achieve better abnormal assessment results. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the principle framework of the present invention;

[0038] Figure 2 It is a schematic diagram of abnormality assessment of the double-chamber kiln of the present invention. DETAILED DESCRIPTION

[0039] 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.

[0040] Example 1

[0041] See also Figure 1 The present application provides a smoke detection and analysis system for a double-chamber kiln, comprising a parameter monitoring terminal, a control value confirmation terminal, an oxygen control terminal, a trend change analysis terminal and a signal terminal, wherein the parameter monitoring terminal is electrically connected to the control value confirmation terminal or the trend change analysis terminal input node, the control value confirmation terminal is electrically connected to the oxygen control terminal input node, and the oxygen control terminal is bidirectionally connected to the trend change analysis terminal, and the trend change analysis terminal is electrically connected to the signal terminal input node;

[0042] The parameter monitoring end monitors the carbon monoxide concentration in the double-chamber kiln in real time, and based on the real-time monitored carbon monoxide concentration, evaluates whether the carbon monoxide concentration exceeds the standard, and generates a related exceeding standard signal to be transmitted to the control value confirmation end. The specific method of evaluation is as follows:

[0043] The carbon monoxide concentration monitored at the current moment is calibrated as N i , where i represents different moments, and the real-time monitored N i Compare with the preset standard value Y1, where the specific value of Y1 is determined in advance by the operator based on experience;

[0044] If N i <Y1, then continue monitoring;

[0045] If N i When ≥Y1, it means that the carbon monoxide concentration monitored at the current moment has exceeded the standard, and an exceeding standard signal is generated, and the generated concentration exceeding standard signal is transmitted to the control value confirmation terminal;

[0046] Specifically, when the carbon monoxide concentration in the double-chamber kiln exceeds the standard, it is generally caused by incomplete combustion in the corresponding double-chamber kiln. The incomplete combustion is generally caused by insufficient oxygen concentration in the double-chamber kiln. When the oxygen concentration is too low, the combustion environment in the corresponding double-chamber kiln will be poor, resulting in incomplete combustion.

[0047] The control value confirmation end, based on the generated over-standard signal, identifies the different oxygen concentrations corresponding to the current carbon monoxide concentration from the historical completion data, and then locks the optimal oxygen concentration control value based on the specific changes in the carbon monoxide concentration and oxygen concentration, and transmits the oxygen concentration control value to the oxygen control end. The specific method of locking the optimal oxygen concentration control value is:

[0048] The receiving time of the exceeding standard signal is calibrated as the processing time, and the carbon monoxide concentration corresponding to the processing time is calibrated as YD;

[0049] From the historical completion data, identify the different carbon monoxide concentrations corresponding to the different oxygen concentrations at the same time, and generate the oxygen concentration change curve and the carbon monoxide concentration change curve, wherein the horizontal coordinate axis of the oxygen concentration change curve is the timeline and the vertical coordinate axis is the oxygen concentration parameter, and the horizontal coordinate axis of the carbon monoxide concentration change curve is the timeline and the vertical coordinate axis is the carbon monoxide concentration;

[0050] Based on this YD, select the same numerical point on the carbon monoxide concentration change curve, and determine the corresponding time corresponding to this numerical point (there are multiple groups of corresponding time), calibrate the corresponding time as the standard time, identify the oxygen concentration corresponding to the standard time from the oxygen concentration change curve and calibrate it as the standard concentration, determine the partial curve segment where the standard concentration is located, select the partial curve segment where the oxygen concentration value is in a climbing state as the oxygen concentration segment to be processed, and select the associated carbon monoxide concentration segment to be processed from the carbon monoxide concentration change curve based on the time corresponding to the front and rear endpoints of the oxygen concentration segment to be processed;

[0051] The oxygen concentration corresponding to the oxygen concentration section to be processed and the carbon monoxide concentration section to be processed at the same time is calibrated as ND k , the carbon monoxide concentration is calibrated as HT k , where k represents the same moment in the corresponding concentration range, using P k =ND k ÷HT k Determine its rating value P k , the corresponding groups of evaluation values ​​P corresponding to the oxygen concentration section to be processed k Perform mean processing to determine the associated mean Jz;

[0052] Then, the oxygen concentration segment to be processed with the maximum value of the associated mean value Jz is taken as the standard segment, and the oxygen concentration N1 corresponding to the initial point of the standard segment is determined, and the oxygen concentration N2 corresponding to the end point of the standard segment is determined, and then the duration T of this standard segment is determined, and TJ=(N2-N1)÷T is used to determine the optimal oxygen concentration control value TJ, and this TJ is transmitted to the oxygen control terminal;

[0053] Specifically, in its past historical completion data, there are corresponding carbon monoxide concentrations and corresponding oxygen concentrations, and their numerical concentrations have correlated changes. When there are relevant evaluation values ​​in the concentration segments associated with the same time period, there are relevant means between the evaluation values, so that the corresponding means can be determined, and then the best control value TJ can be selected from the relevant means. The best control value is the value associated with the numerical segment with the best overall regulation performance.

[0054] The oxygen control end thereof gradually controls the oxygen concentration in the double-chamber kiln based on the determined oxygen concentration control value TJ and stops when the carbon monoxide concentration reaches the standard;

[0055] The trend change analysis end performs trend analysis on the changes in oxygen concentration and carbon monoxide concentration during the regulation process to assess whether the changes in carbon monoxide concentration are normal. The specific method of assessment is as follows:

[0056] Determine the initial moment and the final moment in the control process, from the initial moment to the final moment, the oxygen concentration is in a constant climbing state;

[0057] Identify whether the carbon monoxide concentration is in a continuous decreasing state during the entire change period from the initial moment to the final moment. If so, it means that the carbon monoxide concentration change is normal and no treatment is required. If not, it means that the carbon monoxide concentration change is abnormal, and the oxygen control end is executed again and a secondary trend analysis is performed;

[0058] Specifically, under normal circumstances, when the oxygen concentration continues to rise, the combustion environment in the kiln will become more and more sufficient, which will cause the corresponding carbon monoxide concentration to gradually decrease. Therefore, the increase in oxygen concentration is related to the decrease in carbon monoxide concentration.

[0059] The main execution end of the secondary trend analysis is still the oxygen control end and the trend change analysis end. When the oxygen control end performs the secondary trend analysis, the oxygen concentration is correlated and regulated so that the oxygen concentration rises and then decreases within the set period, and the oxygen concentration control process of three sets of set periods is executed. The three sets of set periods are continuous periods, and the set periods are preset periods, which are formulated by relevant operators based on experience.

[0060] The trend change analysis end re-analyzes the change of carbon monoxide concentration in the kiln based on the change of the numerical control of oxygen concentration in the secondary trend analysis process, and evaluates whether the change of carbon monoxide concentration is related to the change of the numerical control of oxygen concentration. Based on the specific evaluation results, it is evaluated whether there is leakage or cooling abnormality in the double-chamber kiln. Specifically, when the concentration of carbon monoxide does not change, it generally corresponds to the existence of related problems in the double-chamber kiln. When there is a leakage problem, it will lead to insufficient combustion inside, resulting in an increase in the concentration of carbon monoxide. When there is an abnormal cooling problem, it will lead to excessive combustion inside. When the oxygen concentration decreases, the corresponding carbon monoxide will also decrease. Although there will be no problem of excessive carbon monoxide, it is easy to produce other toxic and harmful gases. Therefore, it is necessary to promptly confirm the specific abnormal problems existing in the corresponding double-chamber kiln and display them in time to facilitate the shutdown and maintenance of relevant personnel.

[0061] Combination Figure 2 Among them, the specific method of evaluating whether there is leakage or abnormal cooling in the double-chamber kiln is:

[0062] Based on the specific adjustment process of oxygen concentration during the secondary trend analysis, the oxygen concentration climbing period and the falling period are confirmed and calibrated one by one;

[0063] Then, based on the monitored carbon monoxide concentration, the change of carbon monoxide is determined, and the rising period and the falling period of carbon monoxide in this regulation process are identified;

[0064] Identify the time difference of the same time periods within the carbon monoxide concentration and oxygen concentration (compare the climbing period with the climbing period to confirm the time difference, and compare the descending period with the descending period to confirm the time difference), and the time difference is greater than 0, sum the time difference of several climbing periods and the time difference of the descending period to determine the total time difference, and evaluate whether the total time difference meets the following requirements:

[0065] Total time difference>Y2, where Y2 is a preset value, and its specific value is determined by the operator based on experience;

[0066] If it is not met, a cooling abnormality signal is generated through the signal terminal and displayed directly;

[0067] If it is satisfied, a kiln leakage signal will be generated through the signal terminal and displayed directly.

[0068] Example: Confirm the rising and falling periods of oxygen concentration; plan 10:00 to 10:30 as the period for oxygen concentration to rise, and 10:30 to 11:10 as the period for oxygen concentration to fall.

[0069] Then, observe the change in carbon monoxide concentration. From 10:10 to 10:30, the carbon monoxide concentration dropped from 50ppm to 44ppm; from 10:30 to 11:10, the carbon monoxide concentration rose from 44ppm to 48ppm. Therefore, the rising period of carbon monoxide concentration was from 10:30 to 11:10, and the falling period was from 10:10 to 10:30.

[0070] Next, identify the time difference between the carbon monoxide concentration and the oxygen concentration in the same time period. The time difference during the falling period is 10:30 (carbon monoxide starts to fall) minus 10:20 (oxygen starts to climb), which is 10.

[0071] Sum the time difference during the climb and the time difference during the descent, and the total time difference is 10.

[0072] Based on the specific numerical evaluation, the corresponding associated signal can be determined and directly displayed.

[0073] 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.

[0074] 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. The smoke detection and analysis system in the double-chamber kiln is characterized by: include: The parameter monitoring end monitors the carbon monoxide concentration in the double-chamber kiln in real time, and based on the real-time monitored carbon monoxide concentration, evaluates whether the carbon monoxide concentration exceeds the standard, and generates a relevant exceeding-standard signal to be transmitted to the control value confirmation end; The control value confirmation end, based on the generated over-standard signal, identifies the different oxygen concentrations corresponding to the current carbon monoxide concentration from the historical completion data, and then locks the optimal oxygen concentration control value based on the specific changes in the carbon monoxide concentration and oxygen concentration, and transmits the oxygen concentration control value to the oxygen control end; The oxygen control end gradually controls the oxygen concentration in the double-chamber kiln based on the determined oxygen concentration control value and stops when the carbon monoxide concentration reaches the standard; The trend change analysis end performs trend analysis on the changes in oxygen concentration and carbon monoxide concentration during the control process to assess whether the changes in carbon monoxide concentration are normal. If abnormal, a secondary trend analysis process is performed; The secondary trend analysis process includes: The oxygen concentration is controlled by the oxygen control end so that the oxygen concentration rises and then decreases within the set time period, and the oxygen concentration control process of three sets of set time periods is performed, and the three sets of set time periods are continuous time periods, and the set time periods are preset time periods; On the trend change analysis side, based on the numerical control changes of oxygen concentration in the secondary trend analysis process, the changes in carbon monoxide concentration in the kiln are re-analyzed to assess whether the changes in carbon monoxide concentration are correlated with the changes in the numerical control of oxygen concentration. Based on the specific assessment results, it is assessed whether there is leakage or cooling abnormality in the double-chamber kiln.

2. The double-chamber kiln smoke detection and analysis system according to claim 1 is characterized in that: The specific method for evaluating whether the carbon monoxide concentration at the parameter monitoring end exceeds the standard is as follows: The carbon monoxide concentration monitored at the current moment is calibrated as N i , where i represents different moments, and the real-time monitored N i Compare with the preset standard value Y1: If N i When ≥Y1, it means that the carbon monoxide concentration monitored at the current moment has exceeded the standard, and an exceeding standard signal is generated, and the generated concentration exceeding standard signal is transmitted to the control value confirmation terminal.

3. The double-chamber kiln smoke detection and analysis system according to claim 2 is characterized in that: If N i <Y1, continue monitoring.

4. The double-chamber kiln smoke detection and analysis system according to claim 2 is characterized in that: The specific method of locking the optimal oxygen concentration control value at the control value confirmation end is: The receiving time of the exceeding standard signal is calibrated as the processing time, and the carbon monoxide concentration corresponding to the processing time is calibrated as YD; From the historical completion data, identify the different carbon monoxide concentrations corresponding to the different oxygen concentrations at the same time, and generate the oxygen concentration change curve and the carbon monoxide concentration change curve; Based on this YD, select the same numerical point on the carbon monoxide concentration change curve, determine the corresponding time corresponding to this numerical point, calibrate the corresponding time as the standard time, identify the oxygen concentration corresponding to the standard time from the oxygen concentration change curve and calibrate it as the standard concentration, determine the partial curve segment where the standard concentration is located, select the partial curve segment where the oxygen concentration value is in a climbing state as the oxygen concentration segment to be processed, and select the associated carbon monoxide concentration segment to be processed from the carbon monoxide concentration change curve based on the time corresponding to the front and rear endpoints of the oxygen concentration segment to be processed; The oxygen concentration corresponding to the oxygen concentration section to be processed and the carbon monoxide concentration section to be processed at the same time is calibrated as ND k , the carbon monoxide concentration is calibrated as HT k , where k represents the same moment in the corresponding concentration range, using P k =ND k ÷HT k Determine its rating value P k , the corresponding groups of evaluation values ​​P corresponding to the oxygen concentration section to be processed k Perform mean processing to determine the associated mean Jz; Then, the oxygen concentration segment to be processed with the maximum associated mean Jz is taken as the standard segment, and the oxygen concentration N1 corresponding to the initial point of the standard segment is determined, and the oxygen concentration N2 corresponding to the end point of the standard segment is determined. Then, the duration T of this standard segment is determined, and TJ=(N2-N1)÷T is used to determine the optimal oxygen concentration control value TJ, and this TJ is transmitted to the oxygen control end.

5. The double-chamber kiln smoke detection and analysis system according to claim 1 is characterized in that: The specific method for evaluating whether the change in carbon monoxide concentration is normal at the trend change analysis end is as follows: Determine the initial moment and the final moment in the control process, from the initial moment to the final moment, the oxygen concentration is in a constant climbing state; Identify whether the carbon monoxide concentration is in a continuous decreasing state during the entire change period from the initial moment to the final moment. If so, it means that the change of the carbon monoxide concentration is normal and no treatment is required. If not, it means that the change of the carbon monoxide concentration is abnormal, and the oxygen control end is executed again and a secondary trend analysis is performed.

6. The double-chamber kiln smoke detection and analysis system according to claim 5 is characterized in that: The specific method for evaluating whether there is air leakage in the double-chamber kiln is as follows: Based on the specific adjustment process of oxygen concentration during the secondary trend analysis, the oxygen concentration climbing period and the falling period are confirmed and calibrated one by one; Then, based on the monitored carbon monoxide concentration, the change of carbon monoxide is determined, and the rising period and the falling period of carbon monoxide in this regulation process are identified; Identify the time difference of the same time period in the carbon monoxide concentration and oxygen concentration, and the time difference is greater than 0, sum the time difference of several climbing time periods and the time difference of the descending time period, determine the total time difference, and evaluate whether the total time difference meets the following requirements: Total time difference>Y2, where Y2 is the preset value; If it is satisfied, a kiln leakage signal will be generated through the signal terminal and displayed directly.

7. The double-chamber kiln smoke detection and analysis system according to claim 6 is characterized in that: The specific method of evaluating whether there is leakage or abnormal cooling in the double-chamber kiln is as follows: If the total time difference is ≤Y2, a cooling abnormality signal is generated through the signal terminal and displayed directly.

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