A method for soot blowing test of low-low temperature economizer

Abstract

The application provides a soot blowing test method for a low-temperature economizer, relates to the technical field of waste heat recovery, and comprises the following steps: obtaining real-time equipment parameters and real-time operation parameters of a target low-temperature economizer, simultaneously obtaining soot blowing test requirements, adjusting the real-time equipment parameters and the real-time operation parameters based on the soot blowing test requirements to obtain first economizing parameters, inputting the first economizing parameters and soot blowing test parameters into a soot blowing simulation model to perform soot blowing simulation, obtaining first soot blowing simulation results, and determining optimal soot blowing test parameters; adjusting the first economizing parameters based on the optimal soot blowing test parameters, performing soot blowing test based on the adjustment results, and obtaining first soot blowing results; comparing the first soot blowing results with soot blowing simulation results corresponding to the optimal soot blowing test parameters to re-optimize economizing parameters of the target low-temperature economizer and perform soot blowing test. The soot blowing scheme can be systematically determined and optimized, and the equipment performance and efficiency are improved.

Description

Technical Field

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

[0002] Currently, low-temperature economizers typically employ water-based heat exchange, placing metal heat exchange tubes within the flue gas duct before the electrostatic precipitator. This utilizes indirect heat exchange between water and flue gas to reduce flue gas temperature and dust resistivity, thereby improving the dust removal efficiency of the electrostatic precipitator. The heated water can then be returned to the boiler feedwater or heating network 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. Current soot blowing schemes are generally predetermined based on the properties of the low-temperature economizers, and it is not easy to carry out 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] This invention provides a soot blowing test method for a low-temperature economizer. The method involves adjusting the real-time equipment parameters and real-time operating parameters of the economizer to obtain a first economizing parameter. This parameter is then combined with the soot blowing test parameters to perform a soot blowing simulation. Based on the simulation results, the optimal soot blowing test parameters are determined, and a soot blowing test is conducted. The soot blowing test is adjusted in real-time based on the results. This method allows for more precise soot blowing in the low-temperature economizer, thereby maximizing its efficiency and reducing the risk of over-blowing.

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

[0007] Step 1: Obtain the real-time equipment parameters and real-time operating parameters of the target low-temperature economizer, and at the same time obtain the soot blowing test requirements of the target low-temperature economizer. Based on the soot blowing test requirements, adjust the real-time equipment parameters and real-time operating parameters to obtain the first economizer parameters.

[0008] Step 2: Input the first coal-saving parameter and the soot blowing test parameters determined based on the soot blowing test requirements into the soot blowing simulation model to perform soot blowing simulation, obtain the first soot blowing simulation results, and determine the optimal soot blowing test parameters;

[0009] Step 3: Adjust the first economizing parameter of the target low-temperature economizer based on the optimal soot blowing test parameters, and conduct a soot blowing test based on the adjustment results to obtain the first soot blowing result;

[0010] Step 4: Compare the first soot blowing result with the soot blowing simulation result corresponding to the optimal soot blowing test parameters, so as to further optimize the coal saving parameters of the target low-temperature economizer, thereby obtaining the final soot blowing scheme and conducting soot blowing tests.

[0011] According to the present invention, the real-time equipment parameters and real-time operating parameters of the target low-temperature economizer are obtained, and the soot blowing test requirements of the target low-temperature economizer are also obtained. Based on the soot blowing test requirements, the real-time equipment parameters and real-time operating parameters are adjusted to obtain the first economizing parameters, including:

[0012] Step 11: Obtain the real-time equipment parameters and real-time operating parameters of the target low-temperature economizer, and at the same time obtain the soot blowing test requirements of the target low-temperature economizer;

[0013] Step 12: Determine whether the real-time equipment parameters and real-time operating 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 operating parameters of the target low-temperature economizer cannot meet the requirements of the soot blowing test, the corresponding initial equipment parameters and initial operating parameters of the target low-temperature economizer shall be determined based on the requirements of the soot blowing test.

[0015] Step 13: Compare the initial equipment parameters and the real-time equipment parameters, and adjust the real-time equipment parameters of the target low-temperature economizer based on the initial equipment parameters to obtain the first equipment parameters. At the same time, compare the initial operating parameters and the real-time operating parameters, and adjust the real-time operating parameters of the target low-temperature economizer based on the initial operating parameters to obtain the first operating parameters.

[0016] Step 14: Combine the first equipment parameters and the first operating parameters to obtain the first coal-saving parameters of the target low-temperature economizer.

[0017] According to the present invention, 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 to perform soot blowing simulation, obtain the first soot blowing simulation result, and determine the optimal soot blowing test parameters, including:

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

[0019] Step 22: Determine the soot blowing test set for 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: Input the soot blowing test parameters of each soot blowing test subset in the soot blowing test set and the first coal saving parameters of the target low-temperature economizer into the soot blowing simulation model to perform soot blowing test simulation and obtain the first soot blowing simulation result;

[0021] Step 24: Obtain the first soot blowing simulation set based on the first soot blowing simulation results of each soot blowing test subset;

[0022] Step 25: Obtain the parameter type of each soot blowing test parameter in the soot blowing test set, and classify the soot blowing test set based on each parameter type to obtain the first classification test set;

[0023] Step 26: Obtain the first soot blowing simulation result corresponding to each first category test subset in the first category test set, thereby constructing the first soot blowing simulation subset corresponding to each first category test subset;

[0024] Among them, the same first soot blowing simulation result corresponds to one or more first soot blowing simulation subsets;

[0025] Step 27: Sort the first soot blowing simulation results in the first soot blowing simulation subset based on the soot blowing test time corresponding to each first soot blowing simulation subset to obtain the second soot blowing simulation subset;

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

[0027] Step 29: Determine the optimal soot blowing point for each first soot blowing curve based on the curve trend of each first soot blowing curve in the first soot blowing curve set;

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

[0029] According to the present invention, obtaining the test time corresponding to the optimal soot blowing point of each first soot blowing curve in the first soot blowing curve set, and determining the optimal soot blowing test parameters by combining the parameter correlation between the soot blowing test parameters corresponding to each soot blowing curve, includes:

[0030] Obtain the test time corresponding to the optimal soot blowing point of each first soot blowing curve in the first soot blowing curve set to obtain the first test time set;

[0031] Obtain the first soot blowing simulation result corresponding to each first test time in the first test time set;

[0032] Obtain the parameter correlation of each soot blowing test parameter corresponding to the first soot blowing simulation result, and combine the first soot blowing simulation result with the parameter correlation to determine the soot blowing performance at each first test moment;

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

[0034] The present invention provides a method for determining the soot blowing performance at each first test moment by combining the first soot blowing simulation results with parameter correlation, comprising:

[0035] Determine the soot blowing performance W at each moment of the first test;

[0036] Where W represents the soot blowing performance of the target low-temperature economizer in the soot blowing simulation model at the current test moment, and h i h represents the i-th sub-result of the first soot blowing simulation. is For the target low-temperature economizer at the current test moment, l corresponds to the standard soot blowing sub-result corresponding to the i-th soot blowing simulation sub-result. i The parameter type is the i-th sub-result of the first soot blowing simulation result, where ω is the type conversion coefficient, and l j Let δ be the parameter type of the j-th soot blowing simulation sub-result in the first soot blowing simulation result, δ be the maximum simulation error of the soot blowing simulation model, α1 be the performance influence weight of the soot blowing simulation sub-result, α2 be the performance influence weight of the parameter type corresponding to the soot blowing simulation sub-result, where i is not equal to j, α1+α2=1, n be the number of soot blowing simulation sub-results in the first soot blowing simulation result, and m be the number of soot blowing simulation sub-results in the first soot blowing simulation result excluding the current soot blowing simulation sub-result, i.e. m=n-1.

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

[0038] Step 31: Adjust the relevant parameters of the first saving parameter of the target low-temperature economizer based on the optimal soot blowing test parameters to obtain the second 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 coal-saving parameter to conduct a soot blowing test and obtain the 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 to further optimize the coal saving parameters of the target low-temperature economizer, thereby obtaining the final soot blowing scheme, and conducting soot blowing tests, including:

[0041] Step 41: Input the second coal-saving parameters into the soot blowing simulation model to perform the second soot blowing simulation and obtain the second soot blowing simulation results;

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

[0043] Step 43: Input the third coal-saving parameter into the target low-temperature economizer, and then conduct a soot blowing test on the target low-temperature economizer based on the third coal-saving parameter, and determine the soot blowing efficiency of the soot blowing test, thereby determining the soot blowing scheme and conducting the soot blowing test.

[0044] According to the present invention, determining the soot blowing efficiency of a soot blowing test, thereby determining a soot blowing scheme, and conducting a soot blowing test includes:

[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, then the third coal-saving parameter will be used as the final soot blowing scheme for the target low-temperature economizer, and a soot blowing test will be conducted.

[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, then the third coal-saving parameter will be adjusted again.

[0047] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a soot blowing test method for a low-temperature economizer. By adjusting the real-time equipment parameters and real-time operating parameters of the low-temperature economizer, a first economizing parameter is obtained. Then, soot blowing test parameters are combined to simulate soot blowing, and the optimal soot blowing test parameters are determined based on the simulation results. A soot blowing test is then conducted, and the soot blowing test is adjusted in real time according to the soot blowing test results. This makes the soot blowing of the low-temperature economizer more accurate, thereby maximizing the working efficiency of the low-temperature economizer and reducing the risk of over-sweeping. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0049] Figure 1 This is a flowchart of a soot blowing test method for a low-temperature economizer provided in an embodiment of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0051] Example 1:

[0052] This invention provides a soot blowing test method for low-temperature economizers, such as... Figure 1 As shown, it includes:

[0053] Step 1: Obtain the real-time equipment parameters and real-time operating parameters of the target low-temperature economizer, and at the same time obtain the soot blowing test requirements of the target low-temperature economizer. Based on the soot blowing test requirements, adjust the real-time equipment parameters and real-time operating parameters to obtain the first economizer parameters.

[0054] Step 2: Input the first coal-saving parameter and the soot blowing test parameters determined based on the soot blowing test requirements into the soot blowing simulation model to perform soot blowing simulation, obtain the first soot blowing simulation results, and determine the optimal soot blowing test parameters;

[0055] Step 3: Adjust the first economizing parameter of the target low-temperature economizer based on the optimal soot blowing test parameters, and conduct a soot blowing test based on the adjustment results to obtain the first soot blowing result;

[0056] Step 4: Compare the first soot blowing result with the soot blowing simulation result corresponding to the optimal soot blowing test parameters, so as to further optimize the coal saving parameters of the target low-temperature economizer, thereby obtaining the final soot blowing scheme and conducting soot blowing tests.

[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 feedwater 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 low in order to recover heat more effectively.

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

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

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

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

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

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

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

[0065] In this embodiment, the first soot blowing result refers to the result obtained after conducting an actual soot blowing test based on the optimal soot blowing test parameters.

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

[0067] The beneficial effects of the above technical solution are as follows: by adjusting the real-time equipment parameters and real-time operating parameters of the low-temperature economizer, the first economizing parameters are obtained. Then, the soot blowing test parameters are combined to conduct soot blowing simulation, and the optimal soot blowing test parameters are determined based on the simulation results. Soot blowing tests are then conducted, and the soot blowing test is adjusted in real time according to the soot blowing test results. This makes the soot blowing of the low-temperature economizer more accurate, thereby maximizing the working efficiency of the low-temperature economizer and reducing the risk of over-blowing.

[0068] Example 2:

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

[0070] Step 11: Obtain the real-time equipment parameters and real-time operating parameters of the target low-temperature economizer, and at the same time obtain the soot blowing test requirements of the target low-temperature economizer;

[0071] Step 12: Determine whether the real-time equipment parameters and real-time operating 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 operating parameters of the target low-temperature economizer cannot meet the requirements of the soot blowing test, the corresponding initial equipment parameters and initial operating parameters of the target low-temperature economizer shall be determined based on the requirements of the soot blowing test.

[0073] Step 13: Compare the initial equipment parameters and the real-time equipment parameters, and adjust the real-time equipment parameters of the target low-temperature economizer based on the initial equipment parameters to obtain the first equipment parameters. At the same time, compare the initial operating parameters and the real-time operating parameters, and adjust the real-time operating parameters of the target low-temperature economizer based on the initial operating parameters to obtain the first operating parameters.

[0074] Step 14: Combine the first equipment parameters and the first operating parameters to obtain the first coal-saving parameters of the target low-temperature economizer.

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

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

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

[0078] In this embodiment, the soot blowing test requirement is the actual soot blowing requirement to regularly blow soot on the heating surface of the low-temperature economizer in order to maintain the 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 coal-saving parameter refers to the set of equipment parameters and operating parameters of the low-temperature economizer under the current operating conditions after parameter adjustment.

[0082] The beneficial effects of the above technical solution are as follows: by adjusting the real-time equipment parameters and real-time operating parameters of the low-temperature economizer, the first economizer parameter is obtained. This allows for the combination of soot blowing test parameters to perform soot blowing simulation, making the soot blowing simulation results more accurate. This leads to more accurate soot blowing test parameters, which in turn enable more precise soot blowing in the low-temperature economizer, thereby maximizing its working efficiency.

[0083] Example 3:

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

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

[0086] Step 22: Determine the soot blowing test set for 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: Input the soot blowing test parameters of each soot blowing test subset in the soot blowing test set and the first coal saving parameters of the target low-temperature economizer into the soot blowing simulation model to perform soot blowing test simulation and obtain the first soot blowing simulation result;

[0088] Step 24: Obtain the first soot blowing simulation set based on the first soot blowing simulation results of each soot blowing test subset;

[0089] Step 25: Obtain the parameter type of each soot blowing test parameter in the soot blowing test set, and classify the soot blowing test set based on each parameter type to obtain the first classification test set;

[0090] Step 26: Obtain the first soot blowing simulation result corresponding to each first category test subset in the first category test set, thereby constructing the first soot blowing simulation subset corresponding to each first category test subset;

[0091] Among them, the same first soot blowing simulation result corresponds to one or more first soot blowing simulation subsets;

[0092] Step 27: Sort the first soot blowing simulation results in the first soot blowing simulation subset based on the soot blowing test time corresponding to each first soot blowing simulation subset to obtain the second soot blowing simulation subset;

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

[0094] Step 29: Determine the optimal soot blowing point for each first soot blowing curve based on the curve trend of each first soot blowing curve in the first soot blowing curve set;

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

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

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

[0098] In this embodiment, the soot blowing test set is a set of parameters that includes the soot blowing test parameters at each test moment.

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

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

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

[0102] In this embodiment, the first soot blowing simulation set refers to the set that includes the simulation results of all soot blowing test subsets.

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

[0104] In this embodiment, the first classification test set is a set obtained by classifying the soot blowing test set according to the parameter type.

[0105] In this embodiment, the first dust blowing simulation subset is a subset composed of simulation results under the same category based on the classified test set.

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

[0107] In this embodiment, the first soot blowing curve is a curve drawn based on the simulation results in the second soot blowing simulation subset, reflecting the trend of soot blowing effect over time or other variables.

[0108] In this embodiment, the first set of soot blowing curves is a set of all first soot blowing curves that include the first soot blowing simulation results.

[0109] In this embodiment, the optimal soot blowing point refers to the point on each first soot blowing curve that represents the best soot blowing effect (such as the highest thermal efficiency and the lowest energy consumption).

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

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

[0112] The beneficial effects of the above technical solution are: by conducting soot blowing simulation, more accurate soot blowing test parameters can be determined, making the soot blowing of the target low-temperature economizer more accurate and greatly improving the working efficiency of the low-temperature economizer.

[0113] Example 4:

[0114] Based on Example 3, the optimal soot blowing test parameters are determined by combining the parameter correlations between the soot blowing test parameters corresponding to each soot blowing curve, including:

[0115] Obtain the test time corresponding to the optimal soot blowing point of each first soot blowing curve in the first soot blowing curve set to obtain the first test time set;

[0116] Obtain the first soot blowing simulation result corresponding to each first test time in the first test time set;

[0117] Obtain the parameter correlation of each soot blowing test parameter corresponding to the first soot blowing simulation result, and combine the first soot blowing simulation result with the parameter correlation to determine the soot blowing performance at each first test moment;

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

[0119] In this embodiment, the first test time set refers to the set of test times corresponding to the optimal soot blowing point of each first soot blowing curve in the first soot blowing curve set.

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

[0121] The beneficial effects of the above technical solution are: by judging the correlation of parameters, more accurate soot blowing test parameters can be selected, making the soot blowing of the target low-temperature economizer more accurate and greatly improving the working efficiency of the low-temperature economizer.

[0122] Example 5:

[0123] Based on Example 4, the soot blowing performance at each first test moment is determined by combining the first soot blowing simulation results with parameter correlation, including:

[0124] Determine the soot blowing performance W at each moment of the first test;

[0125] Where W represents the soot blowing performance of the target low-temperature economizer in the soot blowing simulation model at the current test moment, and h i h represents the i-th sub-result of the first soot blowing simulation. is For the target low-temperature economizer at the current test moment, l corresponds to the standard soot blowing sub-result corresponding to the i-th soot blowing simulation sub-result. i The parameter type is the i-th sub-result of the first soot blowing simulation result, where ω is the type conversion coefficient, and l j Let δ be the parameter type of the j-th soot blowing simulation sub-result in the first soot blowing simulation result, δ be the maximum simulation error of the soot blowing simulation model, α1 be the performance influence weight of the soot blowing simulation sub-result, α2 be the performance influence weight of the parameter type corresponding to the soot blowing simulation sub-result, where i is not equal to j, α1+α2=1, n be the number of soot blowing simulation sub-results in the first soot blowing simulation result, and m be the number of soot blowing simulation sub-results in the first soot blowing simulation result excluding the current soot blowing simulation sub-result, i.e. m=n-1.

[0126] The beneficial effects of the above technical solution are: by calculating the soot blowing performance at different test times, more accurate soot blowing test parameters can be selected, making the soot blowing of the target low-temperature economizer more accurate and greatly improving the working efficiency of the low-temperature economizer.

[0127] Example 6:

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

[0129] Step 31: Adjust the relevant parameters of the first saving parameter of the target low-temperature economizer based on the optimal soot blowing test parameters to obtain the second 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 coal-saving parameter to conduct a soot blowing test and obtain the 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 soot blowing result refers to the result obtained after conducting an actual soot blowing test based on the optimal soot blowing test parameters.

[0133] The beneficial effects of the above technical solution are: by conducting soot blowing tests based on the second coal-saving parameters, the soot blowing test can be 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.

[0134] Example 7:

[0135] Based on Example 6, the final soot blowing scheme was obtained, and soot blowing tests were conducted, including:

[0136] Step 41: Input the second coal-saving parameters into the soot blowing simulation model to perform the second soot blowing simulation and obtain the second soot blowing simulation results;

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

[0138] Step 43: Input the third coal-saving parameter into the target low-temperature economizer, and then conduct a soot blowing test on the target low-temperature economizer based on the third coal-saving parameter, and determine the soot blowing efficiency of the soot blowing test, thereby determining the soot blowing scheme and conducting the soot blowing test.

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

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

[0141] The beneficial effects of the above technical solution are: by comparing the first soot blowing result with the soot blowing simulation result, the soot blowing test can be adjusted in real time according to the soot blowing test result, which can make the soot blowing of the low temperature economizer more accurate, thereby maximizing the working efficiency of the low temperature economizer.

[0142] Example 8:

[0143] Based on Example 7, the soot blowing efficiency of the soot blowing test is determined to establish a soot blowing scheme. The soot blowing test is then conducted, 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, then the third coal-saving parameter will be used as the final soot blowing scheme for the target low-temperature economizer, and a soot blowing test will be conducted.

[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, then the third coal-saving parameter will be adjusted again.

[0146] The beneficial effects of the above technical solution are: 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, which can 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, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate 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: Obtain the real-time equipment parameters and real-time operating parameters of the target low-temperature economizer, and at the same time obtain the soot blowing test requirements of the target low-temperature economizer. Based on the soot blowing test requirements, adjust the real-time equipment parameters and real-time operating parameters to obtain the first economizer parameters. Step 2: Input the first coal-saving parameter and the soot blowing test parameters determined based on the soot blowing test requirements into the soot blowing simulation model to perform soot blowing simulation, obtain the first soot blowing simulation results, and determine the optimal soot blowing test parameters; include: Step 21: Determine the soot blowing test parameters for the target low-temperature economizer based on the soot blowing test requirements; Step 22: Determine the soot blowing test set for 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: Input the soot blowing test parameters of each soot blowing test subset in the soot blowing test set and the first coal saving parameters of the target low-temperature economizer into the soot blowing simulation model to perform soot blowing test simulation and obtain the first soot blowing simulation result; Step 24: Obtain the first soot blowing simulation set based on the first soot blowing simulation results of each soot blowing test subset; Step 25: Obtain the parameter type of each soot blowing test parameter in the soot blowing test set, and classify the soot blowing test set based on each parameter type to obtain the first classification test set; Step 26: Obtain the first soot blowing simulation result corresponding to each first category test subset in the first category test set, thereby constructing the first soot blowing simulation subset corresponding to each first category test subset; Among them, the same first soot blowing simulation result corresponds to one or more first soot blowing simulation subsets; Step 27: Sort the first soot blowing simulation results in the first soot blowing simulation subset based on the soot blowing test time corresponding to each first soot blowing simulation subset to obtain the second soot blowing simulation subset; Step 28: Input each first soot blowing simulation result in each second soot blowing simulation subset into the same coordinate system to obtain the first soot blowing curve of each second soot blowing simulation subset, thereby obtaining the first soot blowing curve set; Step 29: Determine the optimal soot blowing point for each first soot blowing curve based on the curve trend of each first soot blowing curve in the first soot blowing curve set; Step 210: Obtain the test time corresponding to the optimal soot blowing point of each first soot blowing curve in the first soot blowing curve set, and determine the optimal soot blowing test parameters by combining the parameter correlation between the soot blowing test parameters corresponding to each soot blowing curve. Step 3: Adjust the first economizing parameter of the target low-temperature economizer based on the optimal soot blowing test parameters, and conduct a soot blowing test based on the adjustment results to obtain the first soot blowing result; Step 4: Compare the first soot blowing result with the soot blowing simulation result corresponding to the optimal soot blowing test parameters, so as to further optimize the coal saving parameters of the target low-temperature economizer, thereby obtaining the final soot blowing scheme and conducting soot blowing tests.

2. The soot blowing test method for a low-temperature economizer according to claim 1, characterized in that, The real-time equipment parameters and real-time operating parameters of the target low-temperature economizer are obtained, along with the soot blowing test requirements. Based on these requirements, the real-time equipment parameters and real-time operating parameters are adjusted to obtain the first economizer parameters, including: Step 11: Obtain the real-time equipment parameters and real-time operating parameters of the target low-temperature economizer, and at the same time obtain the soot blowing test requirements of the target low-temperature economizer; Step 12: Determine whether the real-time equipment parameters and real-time operating 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 operating parameters of the target low-temperature economizer cannot meet the requirements of the soot blowing test, the corresponding initial equipment parameters and initial operating parameters of the target low-temperature economizer shall be determined based on the requirements of the soot blowing test. Step 13: Compare the initial equipment parameters and the real-time equipment parameters, and adjust the real-time equipment parameters of the target low-temperature economizer based on the initial equipment parameters to obtain the first equipment parameters. At the same time, compare the initial operating parameters and the real-time operating parameters, and adjust the real-time operating parameters of the target low-temperature economizer based on the initial operating parameters to obtain the first operating parameters. Step 14: Combine the first equipment parameters and the first operating parameters to obtain the first coal-saving parameters of the target low-temperature economizer.

3. The soot blowing test method for a low-temperature economizer according to claim 2, characterized in that, Obtain the test time corresponding to the optimal soot blowing point for each of the first soot blowing curves in the first soot blowing curve set, and determine the optimal soot blowing test parameters by combining the parameter correlation between the soot blowing test parameters corresponding to each soot blowing curve, including: Obtain the test time corresponding to the optimal soot blowing point of each first soot blowing curve in the first soot blowing curve set to obtain the first test time set; Obtain the first soot blowing simulation result corresponding to each first test time in the first test time set; Obtain the parameter correlation of each soot blowing test parameter corresponding to the first soot blowing simulation result, and combine the first soot blowing simulation result with the parameter correlation to determine the soot blowing performance at each first test moment; The soot blowing test parameters corresponding to the first test moment with the highest soot blowing performance were extracted as the optimal soot blowing test parameters for the target low-temperature economizer.

4. The soot blowing test method for a low-temperature economizer according to claim 3, characterized in that, The soot blowing performance at each initial test moment was determined by combining the first soot blowing simulation results with parameter correlation, including: Determine the soot blowing performance W at each moment of the first test; Where W represents the soot blowing performance of the target low-temperature economizer in the soot blowing simulation model at the current test moment. This is the i-th sub-result of the first soot blowing simulation. The standard soot blowing sub-result corresponding to the i-th soot blowing simulation sub-result of the target low-temperature economizer at the current test moment. The parameter type is the i-th sub-result of the first soot blowing simulation result. For type conversion coefficient, The parameter type is the j-th sub-result of the first soot blowing simulation result. The maximum simulation error of the soot blowing simulation model, The performance impact weights of the soot blowing simulation sub-results are assigned. Assign performance impact weights to the parameter types corresponding to the dust blowing simulation sub-results, where i is not equal to j. + =1, n is the number of soot blowing simulation sub-results in the first soot blowing simulation result, and m is the number of soot blowing simulation sub-results in the first soot blowing simulation result excluding the current soot blowing simulation sub-result, i.e., m=n-1.

5. The soot blowing test method for a low-temperature economizer according to claim 1, characterized in that, The first economizing parameter of the target low-temperature economizer was adjusted based on the optimal soot blowing test parameters, and a soot blowing test was conducted based on the adjustment results to obtain the first soot blowing results, including: Step 31: Adjust the relevant parameters of the first saving parameter of the target low-temperature economizer based on the optimal soot blowing test parameters to obtain the second saving parameter of the target low-temperature economizer; Step 32: Start the soot blowing system of the low-temperature economizer based on the second coal-saving parameter to conduct a soot blowing test and obtain the first soot blowing result.

6. The soot blowing test method for a low-temperature economizer according to claim 5, characterized in that, The first soot blowing result is compared with the soot blowing simulation result corresponding to the optimal soot blowing test parameters to further optimize the coal saving parameters of the target low-temperature economizer, thereby obtaining the final soot blowing scheme. Soot blowing tests are then conducted, including: Step 41: Input the second coal-saving parameters into the soot blowing simulation model to perform the second soot blowing simulation and obtain the second soot blowing simulation results; Step 42: Compare the second soot blowing simulation results with the first soot blowing results, and then optimize the second coal saving parameters corresponding to the first soot blowing results again based on the comparison results to obtain the third coal saving parameters; Step 43: Input the third coal-saving parameter into the target low-temperature economizer, and then conduct a soot blowing test on the target low-temperature economizer based on the third coal-saving parameter, and determine the soot blowing efficiency of the soot blowing test, thereby determining the soot blowing scheme and conducting the soot blowing test.

7. The soot blowing test method for a low-temperature economizer according to claim 6, characterized in that, To determine the soot blowing efficiency of the soot blowing test and thus decide on the soot blowing scheme, the soot blowing test is conducted, 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, then the third coal-saving parameter will be used as the final soot blowing scheme for the target low-temperature economizer, and a soot blowing test will be conducted. 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, then the third coal-saving parameter will be adjusted again.

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