Soot blowing test method for low-low-temperature economizer

Abstract

The invention provides a soot blowing test method for a low-low-temperature economizer, and relates to the technical field of waste heat recovery, and the method comprises the steps: obtaining real-time equipment parameters and real-time operation parameters of a target low-low-temperature economizer, and obtaining soot blowing test demands at the same time, thereby carrying out the parameter adjustment of the real-time equipment parameters and the real-time operation parameters based on the soot blowing test demands, obtaining a first coal saving parameter; inputting the first coal saving parameter and the soot blowing test parameter into a soot blowing simulation model to perform soot blowing simulation to obtain a first soot blowing simulation result, and determining an optimal soot blowing test parameter; adjusting the first coal saving parameter based on the optimal soot blowing test parameter, and performing a soot blowing test based on an adjustment result to obtain a first soot blowing result; and comparing the first soot blowing result with a soot blowing simulation result corresponding to the optimal soot blowing test parameter, so that the coal saving parameter of the target low-low-temperature economizer is optimized again, and a soot blowing test is carried out. The soot blowing scheme can be systematically determined and optimized, and the equipment performance and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery, and in particular to a soot blowing test method for a low-temperature economizer. Background Art

[0002] At present, low-temperature economizers usually use water-based heat exchange, arranging metal heat exchange tubes in the flue before the electrostatic precipitator, using water and flue gas for indirect heat exchange to reduce flue gas temperature and dust resistivity, thereby improving the dust removal efficiency of the electrostatic precipitator. The heated water can be returned to the boiler feed water or hot network water for waste heat recovery.

[0003] However, low-temperature economizers are usually arranged in the horizontal flue of electrostatic precipitators, which are prone to ash accumulation. The current soot blowing scheme is generally predetermined according to the properties of the low-temperature economizers, and it is not easy to perform soot blowing according to the actual soot blowing requirements of the equipment.

[0004] Therefore, the present invention provides a soot blowing test method for a low temperature economizer. Summary of the invention

[0005] The present invention provides a sootblowing test method for a low-temperature economizer, which is used to obtain a first economizer parameter by adjusting the real-time equipment parameters and the real-time operation parameters of the low-temperature economizer, thereby performing a sootblowing simulation in combination with the sootblowing test parameters, and determining the optimal sootblowing test parameters based on the simulation results, and performing a sootblowing test. The sootblowing test is adjusted in real time according to the sootblowing test results, which can make the sootblowing of the low-temperature economizer more accurate, thereby maximizing the working efficiency of the low-temperature economizer, and also reducing the risk of excessive sootblowing.

[0006] The present invention provides a soot blowing test method for a low-temperature economizer, comprising:

[0007] Step 1: obtaining the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer, and obtaining the soot blowing test requirements of the target low-temperature economizer, thereby adjusting the real-time equipment parameters and real-time operation parameters based on the soot blowing test requirements to obtain the first economizer parameters;

[0008] Step 2: inputting the first coal-saving parameter and the soot-blowing test parameter determined based on the soot-blowing test requirement into the soot-blowing simulation model, thereby performing soot-blowing simulation, obtaining the first soot-blowing simulation result, and determining the optimal soot-blowing test parameter;

[0009] Step 3: adjusting the first coal-saving parameter of the target low-temperature economizer based on the optimal soot-blowing test parameter, and performing a soot-blowing test based on the adjustment result to obtain a first soot-blowing result;

[0010] Step 4: Compare the first sootblowing result with the sootblowing simulation result corresponding to the optimal sootblowing test parameters, so as to optimize the coal-saving parameters of the target low-temperature economizer again, thereby obtaining the final sootblowing plan and conducting a sootblowing test.

[0011] According to the present invention, the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer are obtained, and the soot blowing test requirements of the target low-temperature economizer are obtained, so that the real-time equipment parameters and real-time operation parameters are adjusted based on the soot blowing test requirements to obtain the first economizer parameters, including:

[0012] Step 11: obtaining real-time equipment parameters and real-time operation parameters of the target low-temperature economizer, and obtaining the soot blowing test requirements of the target low-temperature economizer;

[0013] Step 12: Determine whether the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer can meet the requirements of the soot blowing test;

[0014] If the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer cannot meet the soot blowing test requirements, then the corresponding initial equipment parameters and initial operation parameters of the target low-temperature economizer are determined based on the soot blowing test requirements;

[0015] Step 13: Compare the initial device parameters with the real-time device parameters, thereby adjusting the real-time device parameters of the target low-temperature economizer based on the initial device parameters to obtain first device parameters, and at the same time compare the initial operating parameters with the real-time operating parameters, thereby adjusting the real-time operating parameters of the target low-temperature economizer based on the initial operating parameters to obtain first operating parameters;

[0016] Step 14: The first equipment parameter and the first operating parameter are integrated to obtain the first coal-saving parameter of the target low-temperature economizer.

[0017] According to the present invention, the first coal-saving parameter and the soot-blowing test parameter determined based on the soot-blowing test requirement are input into the soot-blowing simulation model, so as to perform soot-blowing simulation, obtain the first soot-blowing simulation result, and determine the optimal soot-blowing test parameter, including:

[0018] Step 21: determining soot blowing test parameters for the target low-temperature economizer based on the soot blowing test requirements of the target low-temperature economizer;

[0019] Step 22: determining a soot blowing test set of the target low-temperature economizer based on the soot blowing test parameters, wherein each soot blowing test subset in the soot blowing test set corresponds to the same test time;

[0020] Step 23: inputting the sootblowing test parameters of each sootblowing test subset in the sootblowing test set and the first coal-saving parameter of the target low-temperature economizer into the sootblowing simulation model, thereby performing a sootblowing test simulation and obtaining a first sootblowing simulation result;

[0021] Step 24: obtaining a first sootblowing simulation set based on the first sootblowing simulation result of each sootblowing test subset;

[0022] Step 25: obtaining a parameter type of each soot blowing test parameter in the soot blowing test set, and classifying the soot blowing test set based on each parameter type to obtain a first classified test set;

[0023] Step 26: obtaining a first sootblowing simulation result corresponding to each first classification test subset in the first classification test set, thereby constructing a first sootblowing simulation subset corresponding to each first classification test subset;

[0024] Wherein, the same first sootblowing simulation result corresponds to one or more first sootblowing simulation subsets;

[0025] Step 27: sorting each first sootblowing simulation result in the first sootblowing simulation subset based on the sootblowing test time corresponding to each first sootblowing simulation subset to obtain a second sootblowing simulation subset;

[0026] Step 28: input each first sootblowing simulation result in each second sootblowing simulation subset into the same coordinate system to obtain the first sootblowing curve of each second sootblowing simulation subset, thereby obtaining the first sootblowing curve set;

[0027] Step 29: determining an optimal sootblowing point of each first sootblowing curve based on a curve trend of each first sootblowing curve in the first sootblowing curve set;

[0028] Step 210: Obtain the test time corresponding to the optimal sootblowing point of each first sootblowing curve in the first sootblowing curve set, and determine the optimal sootblowing test parameters in combination with the parameter correlation between the sootblowing test parameters corresponding to each sootblowing curve.

[0029] According to the present invention, obtaining the test time corresponding to the best sootblowing point of each first sootblowing curve in the first sootblowing curve set, and determining the best sootblowing test parameters in combination with the parameter correlation between the sootblowing test parameters corresponding to each sootblowing curve, includes:

[0030] Obtaining the test time corresponding to the best soot blowing point of each first soot blowing curve in the first soot blowing curve set, to obtain a first test time set;

[0031] Obtaining a first sootblowing simulation result corresponding to each first test moment in the first test moment set;

[0032] Obtaining the parameter correlation of the first sootblowing simulation result corresponding to each sootblowing test parameter, and determining the sootblowing performance at each first test moment by combining the first sootblowing simulation result with the parameter correlation;

[0033] The sootblowing test parameters corresponding to the first test moment with the highest sootblowing performance are extracted as the optimal sootblowing test parameters for the target low-temperature economizer.

[0034] According to the present invention, the first sootblowing simulation result is combined with parameter correlation to determine the sootblowing performance at each first test moment, including:

[0035] Determine the sootblowing performance W at each first test moment;

[0036] Where W is the soot blowing performance of the target low-temperature economizer in the soot blowing simulation model at the current test time, h i is the i-th sootblowing simulation sub-result in the first sootblowing simulation result, h is is the standard soot blowing sub-result corresponding to the ith soot blowing simulation sub-result of the target low-temperature economizer at the current test time, l i is the parameter type of the i-th sootblowing simulation sub-result in the first sootblowing simulation result, ω is the type conversion coefficient, l j is the parameter type of the jth sootblowing simulation sub-result in the first sootblowing simulation result, δ is the maximum simulation error of the sootblowing simulation model, α1 is the performance influence weight of the sootblowing simulation sub-result, α2 is the performance influence weight of the parameter type corresponding to the sootblowing simulation sub-result, wherein i is not equal to j, α1+α2=1, n is the number of sootblowing simulation sub-results in the first sootblowing simulation result, and m is the number of sootblowing simulation sub-results in the first sootblowing simulation result except the current sootblowing simulation sub-result, that is, m=n-1.

[0037] According to the present invention, the first coal-saving parameter of the target low-temperature economizer is adjusted based on the optimal soot-blowing test parameter, and a soot-blowing test is performed based on the adjustment result to obtain a first soot-blowing result, including:

[0038] Step 31: adjusting the relevant parameters of the first coal-saving parameter of the target low-temperature economizer based on the optimal soot-blowing test parameters to obtain the second coal-saving parameter of the target low-temperature economizer;

[0039] Step 32: Start the soot blowing system of the low-temperature economizer based on the second economizer parameter, thereby performing a soot blowing test to obtain a first soot blowing result.

[0040] According to the present invention, the first soot blowing result is compared with the soot blowing simulation result corresponding to the optimal soot blowing test parameters, so as to optimize the coal saving parameters of the target low-temperature economizer again, thereby obtaining the final soot blowing scheme, and conducting a soot blowing test, including:

[0041] Step 41: inputting the second coal-saving parameter into the soot blowing simulation model, thereby performing a second soot blowing simulation and obtaining a second soot blowing simulation result;

[0042] Step 42: Compare the second soot blowing simulation result with the first soot blowing result, and optimize the second coal saving parameter corresponding to the first soot blowing result again based on the comparison result to obtain a third coal saving parameter;

[0043] Step 43: Input the third coal-saving parameter into the target low-temperature economizer, thereby performing a sootblowing test on the target low-temperature economizer based on the third coal-saving parameter, and judging the sootblowing efficiency of the sootblowing test, thereby determining the sootblowing plan and performing the sootblowing test.

[0044] According to the present invention, the soot blowing efficiency of the soot blowing test is determined, so as to determine the soot blowing scheme and perform the soot blowing test, including:

[0045] If the soot blowing efficiency based on the third coal-saving parameter is within the standard soot blowing efficiency range of the target low-temperature economizer, the third coal-saving parameter is used as the final soot blowing scheme of the target low-temperature economizer, thereby conducting a soot blowing test;

[0046] If the soot blowing efficiency based on the third coal-saving parameter is not within the standard soot blowing efficiency range of the target low-temperature economizer, the third coal-saving parameter is adjusted again.

[0047] Compared with the prior art, the beneficial effects of the present invention are as follows: a sootblowing test method for a low-temperature economizer provided by the present invention obtains a first economizer parameter by adjusting the real-time equipment parameters and real-time operating parameters of the low-temperature economizer, thereby performing a sootblowing simulation in combination with the sootblowing test parameters, and determining the optimal sootblowing test parameters based on the simulation results, and performing a sootblowing test, and adjusting the sootblowing test in real time according to the sootblowing test results, which can make the sootblowing of the low-temperature economizer more accurate, thereby maximizing the working efficiency of the low-temperature economizer, and also reducing the risk of excessive sootblowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 The present invention provides a flowchart of a soot blowing test method for a low-temperature economizer. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0051] Embodiment 1:

[0052] The embodiment of the present invention provides a soot blowing test method for a low temperature economizer, such as Figure 1 As shown, including:

[0053] Step 1: obtaining the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer, and obtaining the soot blowing test requirements of the target low-temperature economizer, thereby adjusting the real-time equipment parameters and real-time operation parameters based on the soot blowing test requirements to obtain the first economizer parameters;

[0054] Step 2: inputting the first coal-saving parameter and the soot-blowing test parameter determined based on the soot-blowing test requirement into the soot-blowing simulation model, thereby performing soot-blowing simulation, obtaining the first soot-blowing simulation result, and determining the optimal soot-blowing test parameter;

[0055] Step 3: adjusting the first coal-saving parameter of the target low-temperature economizer based on the optimal soot-blowing test parameter, and performing a soot-blowing test based on the adjustment result to obtain a first soot-blowing result;

[0056] Step 4: Compare the first sootblowing result with the sootblowing simulation result corresponding to the optimal sootblowing test parameters, so as to optimize the coal-saving parameters of the target low-temperature economizer again, thereby obtaining the final sootblowing plan and conducting a sootblowing test.

[0057] In this embodiment, the low-temperature economizer is a heat exchange device used in a boiler system. Its main function is to recover the waste heat of the flue gas at the tail end of the boiler to preheat the boiler feed water or other fluid media, thereby improving the thermal efficiency of the entire boiler system. The low-temperature economizer is called "low-temperature" because its operating temperature is usually designed to be lower in order to recover heat more efficiently.

[0058] In this embodiment, the real-time device parameters are various physical quantities or states of the low-temperature economizer during current operation, such as device power, device voltage, operating speed and other parameters.

[0059] In this embodiment, the real-time operating parameters are parameters that need to be monitored and adjusted during the operation of the low-temperature economizer according to its working conditions and requirements, wherein the real-time operating parameters include: temperature, pressure, input flow, output flow and other parameters.

[0060] In this embodiment, the sootblowing test requirement is the actual sootblowing requirement for regularly performing sootblowing operations on the heating surface of the low-temperature economizer in order to maintain efficient operation of the low-temperature economizer.

[0061] In this embodiment, the first economizer parameter refers to a set of equipment parameters and operating parameters of the low-temperature economizer under current operating conditions after parameter adjustment.

[0062] In this embodiment, the sootblowing simulation model is a model established based on mathematical or physical principles, and is used to simulate the sootblowing test process and predict the effects under different sootblowing parameters.

[0063] In this embodiment, the first sootblowing simulation result refers to the sootblowing prediction simulation result obtained by inputting the first coal-saving parameter and the sootblowing test parameter into the sootblowing simulation model.

[0064] In this embodiment, the optimal sootblowing test parameters are calculated by the sootblowing simulation model, and are the parameter combinations that are expected to achieve the best sootblowing effect.

[0065] In this embodiment, the first sootblowing result refers to a result obtained after an actual sootblowing test is performed based on optimal sootblowing test parameters.

[0066] In this embodiment, the sootblowing simulation result refers to the result obtained after simulation using optimal sootblowing test parameters in the sootblowing simulation model.

[0067] The beneficial effect of the above technical scheme is: by adjusting the real-time equipment parameters and real-time operating parameters of the low-temperature economizer, the first coal-saving parameters are obtained, and then the soot blowing simulation is carried out in combination with the soot blowing test parameters, and the optimal soot blowing test parameters are determined based on the simulation results, and the soot blowing test is carried out, and the soot blowing test is adjusted in real time according to the soot blowing test results, which can make the soot blowing of the low-temperature economizer more accurate, thereby maximizing the working efficiency of the low-temperature economizer, and also reducing the risk of excessive soot blowing.

[0068] Embodiment 2:

[0069] Based on Example 1, the first coal-saving parameter is obtained, including:

[0070] Step 11: obtaining real-time equipment parameters and real-time operation parameters of the target low-temperature economizer, and obtaining the soot blowing test requirements of the target low-temperature economizer;

[0071] Step 12: Determine whether the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer can meet the requirements of the soot blowing test;

[0072] If the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer cannot meet the soot blowing test requirements, then the corresponding initial equipment parameters and initial operation parameters of the target low-temperature economizer are determined based on the soot blowing test requirements;

[0073] Step 13: Compare the initial device parameters with the real-time device parameters, thereby adjusting the real-time device parameters of the target low-temperature economizer based on the initial device parameters to obtain first device parameters, and at the same time compare the initial operating parameters with the real-time operating parameters, thereby adjusting the real-time operating parameters of the target low-temperature economizer based on the initial operating parameters to obtain first operating parameters;

[0074] Step 14: The first equipment parameter and the first operating parameter are integrated to obtain the first coal-saving parameter of the target low-temperature economizer.

[0075] In this embodiment, the initial equipment parameters and initial operating parameters are the equipment parameters and operating parameters corresponding to the target low-temperature economizer determined based on the soot blowing test requirements.

[0076] In this embodiment, the real-time device parameters are various physical quantities or states of the low-temperature economizer during current operation, such as device power, device voltage, operating speed and other parameters.

[0077] In this embodiment, the real-time operating parameters are parameters that need to be monitored and adjusted during the operation of the low-temperature economizer according to its working conditions and requirements, wherein the real-time operating parameters include: temperature, pressure, input flow, output flow and other parameters.

[0078] In this embodiment, the sootblowing test requirement is the actual sootblowing requirement for regularly performing sootblowing operations on the heating surface of the low-temperature economizer in order to maintain efficient operation of the low-temperature economizer.

[0079] In this embodiment, the first device parameter is obtained by adjusting the real-time device parameter based on the initial device parameter.

[0080] In this embodiment, the first operating parameter is obtained by adjusting the real-time operating parameter based on the initial operating parameter.

[0081] In this embodiment, the first economizer parameter refers to a set of equipment parameters and operating parameters of the low-temperature economizer under current operating conditions after parameter adjustment.

[0082] The beneficial effect of the above technical solution is: by adjusting the real-time equipment parameters and real-time operating parameters of the low-temperature economizer, the first coal-saving parameters are obtained, so that the soot blowing simulation can be carried out in combination with the soot blowing test parameters, so that the soot blowing simulation results are more accurate, thereby obtaining more accurate soot blowing test parameters, and conducting soot blowing tests, so that the soot blowing of the low-temperature economizer is more accurate, thereby maximizing the working efficiency of the low-temperature economizer.

[0083] Embodiment 3:

[0084] Based on Example 2, the optimal soot blowing test parameters are determined, including:

[0085] Step 21: determining soot blowing test parameters for the target low-temperature economizer based on the soot blowing test requirements of the target low-temperature economizer;

[0086] Step 22: determining a soot blowing test set of the target low-temperature economizer based on the soot blowing test parameters, wherein each soot blowing test subset in the soot blowing test set corresponds to the same test time;

[0087] Step 23: inputting the sootblowing test parameters of each sootblowing test subset in the sootblowing test set and the first coal-saving parameter of the target low-temperature economizer into the sootblowing simulation model, thereby performing a sootblowing test simulation and obtaining a first sootblowing simulation result;

[0088] Step 24: obtaining a first sootblowing simulation set based on the first sootblowing simulation result of each sootblowing test subset;

[0089] Step 25: obtaining a parameter type of each soot blowing test parameter in the soot blowing test set, and classifying the soot blowing test set based on each parameter type to obtain a first classified test set;

[0090] Step 26: obtaining a first sootblowing simulation result corresponding to each first classification test subset in the first classification test set, thereby constructing a first sootblowing simulation subset corresponding to each first classification test subset;

[0091] Wherein, the same first sootblowing simulation result corresponds to one or more first sootblowing simulation subsets;

[0092] Step 27: sorting each first sootblowing simulation result in the first sootblowing simulation subset based on the sootblowing test time corresponding to each first sootblowing simulation subset to obtain a second sootblowing simulation subset;

[0093] Step 28: input each first sootblowing simulation result in each second sootblowing simulation subset into the same coordinate system to obtain the first sootblowing curve of each second sootblowing simulation subset, thereby obtaining the first sootblowing curve set;

[0094] Step 29: determining an optimal sootblowing point of each first sootblowing curve based on a curve trend of each first sootblowing curve in the first sootblowing curve set;

[0095] Step 210: Obtain the test time corresponding to the optimal sootblowing point of each first sootblowing curve in the first sootblowing curve set, and determine the optimal sootblowing test parameters in combination with the parameter correlation between the sootblowing test parameters corresponding to each sootblowing curve.

[0096] In this embodiment, the sootblowing test requirement is the actual sootblowing requirement for regularly performing sootblowing operations on the heating surface of the low-temperature economizer in order to maintain efficient operation of the low-temperature economizer.

[0097] In this embodiment, the soot blowing test parameters refer to specific values ​​that need to be set or adjusted when performing the soot blowing test, such as the pressure of the soot blower, the soot blowing frequency, the soot blowing time, etc.

[0098] In this embodiment, the sootblowing test set is a parameter set including sootblowing test parameters at each test moment.

[0099] In this embodiment, the first economizer parameter refers to a set of equipment parameters and operating parameters of the low-temperature economizer under current operating conditions after parameter adjustment.

[0100] In this embodiment, the sootblowing simulation model is a model established based on mathematical or physical principles, and is used to simulate the sootblowing test process and predict the effects under different sootblowing parameters.

[0101] In this embodiment, the first sootblowing simulation result refers to the sootblowing prediction simulation result obtained by inputting the first coal-saving parameter and the sootblowing test parameter into the sootblowing simulation model.

[0102] In this embodiment, the first sootblowing simulation set refers to a set including simulation results of all sootblowing test subsets.

[0103] In this embodiment, the parameter type refers to different classifications of soot blowing test parameters, such as pressure parameters, time parameters, and the like.

[0104] In this embodiment, the first classified test set is a set obtained by classifying the sootblowing test set according to parameter types.

[0105] In this embodiment, the first sootblowing simulation subset is a subset consisting of simulation results under the same classification based on the classified test set.

[0106] In this embodiment, the second sootblowing simulation subset is a set obtained by sorting the simulation results in the first sootblowing simulation subset according to the sootblowing test time.

[0107] In this embodiment, the first sootblowing curve is a curve drawn according to the simulation results in the second sootblowing simulation subset, reflecting the variation trend of the sootblowing effect over time or other variables.

[0108] In this embodiment, the first sootblowing curve set is a set of all first sootblowing curves including first sootblowing simulation results.

[0109] In this embodiment, the optimal sootblowing point refers to a point on each first sootblowing curve that indicates the best sootblowing effect (eg, the highest thermal efficiency and the lowest energy consumption).

[0110] In this embodiment, parameter correlation refers to the relationship or mutual influence between different sootblowing test parameters.

[0111] In this embodiment, the optimal sootblowing test parameters are calculated by the sootblowing simulation model, and are the parameter combinations that are expected to achieve the best sootblowing effect.

[0112] The beneficial effect of the above technical solution is: by performing soot blowing simulation, more accurate soot blowing test parameters are determined, so that the soot blowing of the target low-temperature economizer is more accurate, and the working efficiency of the low-temperature economizer is greatly improved.

[0113] Embodiment 4:

[0114] Based on Example 3, the optimal soot blowing test parameters are determined in combination with the parameter correlation between the soot blowing test parameters corresponding to each soot blowing curve, including:

[0115] Obtaining the test time corresponding to the best soot blowing point of each first soot blowing curve in the first soot blowing curve set, to obtain a first test time set;

[0116] Obtaining a first sootblowing simulation result corresponding to each first test moment in the first test moment set;

[0117] Obtaining the parameter correlation of the first sootblowing simulation result corresponding to each sootblowing test parameter, and determining the sootblowing performance at each first test moment by combining the first sootblowing simulation result with the parameter correlation;

[0118] The sootblowing test parameters corresponding to the first test moment with the highest sootblowing performance are extracted as the optimal sootblowing test parameters for the target low-temperature economizer.

[0119] In this embodiment, the first test time set refers to a set of test time points corresponding to the best sootblowing points of each first sootblowing curve in the first sootblowing curve set.

[0120] In this embodiment, the optimal sootblowing test parameters are calculated by the sootblowing simulation model, and are the parameter combinations that are expected to achieve the best sootblowing effect.

[0121] The beneficial effect of the above technical solution is: by judging the correlation of parameters, more accurate sootblowing test parameters are screened out, so that the sootblowing of the target low-temperature economizer is more accurate, and the working efficiency of the low-temperature economizer is greatly improved.

[0122] Embodiment 5:

[0123] Based on Example 4, the first sootblowing simulation result is combined with the parameter correlation to determine the sootblowing performance at each first test moment, including:

[0124] Determine the sootblowing performance W at each first test moment;

[0125] Where W is the soot blowing performance of the target low-temperature economizer in the soot blowing simulation model at the current test time, h i is the i-th sootblowing simulation sub-result in the first sootblowing simulation result, h is is the standard soot blowing sub-result corresponding to the ith soot blowing simulation sub-result of the target low-temperature economizer at the current test time, l i is the parameter type of the i-th sootblowing simulation sub-result in the first sootblowing simulation result, ω is the type conversion coefficient, l j is the parameter type of the jth sootblowing simulation sub-result in the first sootblowing simulation result, δ is the maximum simulation error of the sootblowing simulation model, α1 is the performance influence weight of the sootblowing simulation sub-result, α2 is the performance influence weight of the parameter type corresponding to the sootblowing simulation sub-result, wherein i is not equal to j, α1+α2=1, n is the number of sootblowing simulation sub-results in the first sootblowing simulation result, and m is the number of sootblowing simulation sub-results in the first sootblowing simulation result except the current sootblowing simulation sub-result, that is, m=n-1.

[0126] The beneficial effect of the above technical solution is that by calculating the sootblowing performance at different test times, more accurate sootblowing test parameters can be screened out, making the sootblowing of the target low-temperature economizer more accurate and greatly improving the working efficiency of the low-temperature economizer.

[0127] Embodiment 6:

[0128] Based on Example 3, the first sootblowing result is obtained, including:

[0129] Step 31: adjusting the relevant parameters of the first coal-saving parameter of the target low-temperature economizer based on the optimal soot-blowing test parameters to obtain the second coal-saving parameter of the target low-temperature economizer;

[0130] Step 32: Start the soot blowing system of the low-temperature economizer based on the second economizer parameter, thereby performing a soot blowing test to obtain a first soot blowing result.

[0131] In this embodiment, the second coal-saving parameter is obtained by adjusting the relevant parameters of the first coal-saving parameter of the low-temperature economizer based on the optimal soot blowing test parameters.

[0132] In this embodiment, the first sootblowing result refers to a result obtained after an actual sootblowing test is performed based on optimal sootblowing test parameters.

[0133] The beneficial effect of the above technical solution is that by conducting a soot blowing test based on the second coal-saving parameter, the soot blowing test can be adjusted in real time according to the soot blowing test results more timely, so that the soot blowing of the low-temperature economizer can be made more accurate, thereby maximizing the working efficiency of the low-temperature economizer.

[0134] Embodiment 7:

[0135] Based on Example 6, a final sootblowing scheme was obtained and a sootblowing test was conducted, including:

[0136] Step 41: inputting the second coal-saving parameter into the soot blowing simulation model, thereby performing a second soot blowing simulation and obtaining a second soot blowing simulation result;

[0137] Step 42: Compare the second soot blowing simulation result with the first soot blowing result, and optimize the second coal saving parameter corresponding to the first soot blowing result again based on the comparison result to obtain a third coal saving parameter;

[0138] Step 43: Input the third coal-saving parameter into the target low-temperature economizer, thereby performing a sootblowing test on the target low-temperature economizer based on the third coal-saving parameter, and judging the sootblowing efficiency of the sootblowing test, thereby determining the sootblowing plan and performing the sootblowing test.

[0139] In this embodiment, the second sootblowing simulation result is obtained by inputting the second coal-saving parameter into the sootblowing simulation model and performing sootblowing simulation.

[0140] In this embodiment, the third coal-saving parameter is a parameter optimization result obtained by comparing the second soot blowing simulation result with the first soot blowing result, and re-optimizing the second coal-saving parameter corresponding to the first soot blowing result based on the comparison result.

[0141] The beneficial effect of the above technical solution is: by comparing the first sootblowing result with the sootblowing simulation result, the sootblowing test can be adjusted in real time according to the sootblowing test result, so as to make the sootblowing of the low-temperature economizer more accurate, thereby maximizing the working efficiency of the low-temperature economizer.

[0142] Embodiment 8:

[0143] Based on Example 7, the soot blowing efficiency of the soot blowing test is judged, so as to determine the soot blowing scheme, and the soot blowing test is performed, including:

[0144] If the soot blowing efficiency based on the third coal-saving parameter is within the standard soot blowing efficiency range of the target low-temperature economizer, the third coal-saving parameter is used as the final soot blowing scheme of the target low-temperature economizer, thereby conducting a soot blowing test;

[0145] If the soot blowing efficiency based on the third coal-saving parameter is not within the standard soot blowing efficiency range of the target low-temperature economizer, the third coal-saving parameter is adjusted again.

[0146] The beneficial effect of the above technical solution is: by judging the soot blowing efficiency of the soot blowing test, the soot blowing test can be adjusted in real time according to the soot blowing test results, so as to make the soot blowing of the low-temperature economizer more accurate, thereby maximizing the working efficiency of the low-temperature economizer.

[0147] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soot blowing test method for a low temperature economizer, characterized in that: include: Step 1: obtaining the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer, and obtaining the soot blowing test requirements of the target low-temperature economizer, thereby adjusting the real-time equipment parameters and real-time operation parameters based on the soot blowing test requirements to obtain the first economizer parameters; Step 2: inputting the first coal-saving parameter and the soot-blowing test parameter determined based on the soot-blowing test requirement into the soot-blowing simulation model, thereby performing soot-blowing simulation, obtaining the first soot-blowing simulation result, and determining the optimal soot-blowing test parameter; Step 3: adjusting the first coal-saving parameter of the target low-temperature economizer based on the optimal soot-blowing test parameter, and performing a soot-blowing test based on the adjustment result to obtain a first soot-blowing result; Step 4: Compare the first sootblowing result with the sootblowing simulation result corresponding to the optimal sootblowing test parameters, so as to optimize the coal-saving parameters of the target low-temperature economizer again, thereby obtaining the final sootblowing plan and conducting a sootblowing test.

2. A soot blowing test method for a low temperature economizer according to claim 1, characterized in that: The real-time equipment parameters and real-time operation parameters of the target low-temperature economizer are obtained, and the soot blowing test requirements of the target low-temperature economizer are obtained, so as to adjust the real-time equipment parameters and real-time operation parameters based on the soot blowing test requirements to obtain the first economizer parameters, including: Step 11: obtaining real-time equipment parameters and real-time operation parameters of the target low-temperature economizer, and obtaining the soot blowing test requirements of the target low-temperature economizer; Step 12: Determine whether the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer can meet the requirements of the soot blowing test; If the real-time equipment parameters and real-time operation parameters of the target low-temperature economizer cannot meet the soot blowing test requirements, then the corresponding initial equipment parameters and initial operation parameters of the target low-temperature economizer are determined based on the soot blowing test requirements; Step 13: Compare the initial device parameters with the real-time device parameters, thereby adjusting the real-time device parameters of the target low-temperature economizer based on the initial device parameters to obtain first device parameters, and at the same time compare the initial operating parameters with the real-time operating parameters, thereby adjusting the real-time operating parameters of the target low-temperature economizer based on the initial operating parameters to obtain first operating parameters; Step 14: The first equipment parameter and the first operating parameter are combined to obtain the first coal-saving parameter of the target low-temperature economizer.

3. A soot blowing test method for a low temperature economizer according to claim 2, characterized in that: The first coal-saving parameter and the soot-blowing test parameters determined based on the soot-blowing test requirements are input into the soot-blowing simulation model, so as to perform soot-blowing simulation, obtain the first soot-blowing simulation result, and determine the optimal soot-blowing test parameters, including: Step 21: determining soot blowing test parameters for the target low and low temperature economizer based on the soot blowing test requirements of the target low and low temperature economizer; Step 22: determining a soot blowing test set of the target low-temperature economizer based on the soot blowing test parameters, wherein each soot blowing test subset in the soot blowing test set corresponds to the same test time; Step 23: inputting the sootblowing test parameters of each sootblowing test subset in the sootblowing test set and the first coal-saving parameter of the target low-temperature economizer into the sootblowing simulation model, thereby performing a sootblowing test simulation and obtaining a first sootblowing simulation result; Step 24: obtaining a first sootblowing simulation set based on the first sootblowing simulation result of each sootblowing test subset; Step 25: obtaining a parameter type of each soot blowing test parameter in the soot blowing test set, and classifying the soot blowing test set based on each parameter type to obtain a first classified test set; Step 26: obtaining a first sootblowing simulation result corresponding to each first classification test subset in the first classification test set, thereby constructing a first sootblowing simulation subset corresponding to each first classification test subset; Wherein, the same first sootblowing simulation result corresponds to one or more first sootblowing simulation subsets; Step 27: sorting each first sootblowing simulation result in the first sootblowing simulation subset based on the sootblowing test time corresponding to each first sootblowing simulation subset to obtain a second sootblowing simulation subset; Step 28: input each first sootblowing simulation result in each second sootblowing simulation subset into the same coordinate system to obtain the first sootblowing curve of each second sootblowing simulation subset, thereby obtaining the first sootblowing curve set; Step 29: determining an optimal sootblowing point of each first sootblowing curve based on a curve trend of each first sootblowing curve in the first sootblowing curve set; Step 210: Obtain the test time corresponding to the optimal sootblowing point of each first sootblowing curve in the first sootblowing curve set, and determine the optimal sootblowing test parameters in combination with the parameter correlation between the sootblowing test parameters corresponding to each sootblowing curve.

4. A soot blowing test method for a low temperature economizer according to claim 3, characterized in that: Obtaining the test time corresponding to the best sootblowing point of each first sootblowing curve in the first sootblowing curve set, and determining the best sootblowing test parameters in combination with the parameter correlation between the sootblowing test parameters corresponding to each sootblowing curve, including: Obtaining the test time corresponding to the best soot blowing point of each first soot blowing curve in the first soot blowing curve set, to obtain a first test time set; Obtaining a first sootblowing simulation result corresponding to each first test moment in the first test moment set; Obtaining the parameter correlation of the first sootblowing simulation result corresponding to each sootblowing test parameter, and determining the sootblowing performance at each first test moment by combining the first sootblowing simulation result with the parameter correlation; The sootblowing test parameters corresponding to the first test moment with the highest sootblowing performance are extracted as the optimal sootblowing test parameters for the target low-temperature economizer.

5. A soot blowing test method for a low temperature economizer according to claim 4, characterized in that: The first sootblowing simulation result is combined with the parameter correlation to determine the sootblowing performance at each first test moment, including: Determine the sootblowing performance W at each first test moment; Where W is the soot blowing performance of the target low-temperature economizer in the soot blowing simulation model at the current test time, h i is the i-th sootblowing simulation sub-result in the first sootblowing simulation result, h is is the standard soot blowing sub-result corresponding to the ith soot blowing simulation sub-result of the target low-temperature economizer at the current test time, l i is the parameter type of the i-th sootblowing simulation sub-result in the first sootblowing simulation result, ω is the type conversion coefficient, l j is the parameter type of the jth sootblowing simulation sub-result in the first sootblowing simulation result, δ is the maximum simulation error of the sootblowing simulation model, α1 is the performance influence weight of the sootblowing simulation sub-result, α2 is the performance influence weight of the parameter type corresponding to the sootblowing simulation sub-result, wherein i is not equal to j, α1+α2=1, n is the number of sootblowing simulation sub-results in the first sootblowing simulation result, and m is the number of sootblowing simulation sub-results in the first sootblowing simulation result except the current sootblowing simulation sub-result, that is, m=n-1.

6. A soot blowing test method for a low temperature economizer according to claim 3, characterized in that: The first coal-saving parameter of the target low-temperature economizer is adjusted based on the optimal soot-blowing test parameter, and a soot-blowing test is performed based on the adjustment result to obtain a first soot-blowing result, including: Step 31: adjusting the relevant parameters of the first coal-saving parameter of the target low-temperature economizer based on the optimal soot-blowing test parameters to obtain the second coal-saving parameter of the target low-temperature economizer; Step 32: Start the soot blowing system of the low-temperature economizer based on the second economizer parameter, thereby performing a soot blowing test to obtain a first soot blowing result.

7. A soot blowing test method for a low temperature economizer according to claim 6, characterized in that: The first sootblowing result is compared with the sootblowing simulation result corresponding to the optimal sootblowing test parameters, so as to optimize the coal-saving parameters of the target low-temperature economizer again, thereby obtaining the final sootblowing scheme and conducting a sootblowing test, including: Step 41: inputting the second coal-saving parameter into the soot blowing simulation model, thereby performing a second soot blowing simulation and obtaining a second soot blowing simulation result; Step 42: Compare the second soot blowing simulation result with the first soot blowing result, and optimize the second coal saving parameter corresponding to the first soot blowing result again based on the comparison result to obtain a third coal saving parameter; Step 43: Input the third coal-saving parameter into the target low-temperature economizer, thereby performing a sootblowing test on the target low-temperature economizer based on the third coal-saving parameter, and judging the sootblowing efficiency of the sootblowing test, thereby determining the sootblowing plan and performing the sootblowing test.

8. A soot blowing test method for a low temperature economizer according to claim 7, characterized in that: Determine the soot blowing efficiency of the soot blowing test, so as to determine the soot blowing plan and conduct the soot blowing test, including: If the soot blowing efficiency based on the third coal-saving parameter is within the standard soot blowing efficiency range of the target low-temperature economizer, the third coal-saving parameter is used as the final soot blowing scheme of the target low-temperature economizer, thereby conducting a soot blowing test; If the soot blowing efficiency based on the third coal-saving parameter is not within the standard soot blowing efficiency range of the target low-temperature economizer, the third coal-saving parameter is adjusted again.

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