A multi-zero-carbon fuel pulverized coal burner test platform and a method for operating the same

Abstract

The present disclosure provides a multi-zero-carbon fuel pulverized coal burner test platform and its operation method, wherein the test platform comprises a furnace, a zero-carbon fuel delivery system, a pulverized coal delivery system, a temperature detection system, a flue gas detection system and a control system; wherein the fuel output end of the zero-carbon fuel delivery system is connected with the fuel input end of the pulverized coal burner; the wind-pulverized coal output end of the pulverized coal delivery system is connected with the wind-pulverized coal input end of the pulverized coal burner; the control system is used to control the fuel flow of the zero-carbon fuel delivery system and the wind-pulverized coal concentration of the pulverized coal delivery system, and judge the performance of the pulverized coal burner according to the temperature field change detected by the temperature detection system and the flue gas composition change detected by the flue gas detection system. In the multi-zero-carbon fuel pulverized coal burner test platform and its operation method of the present disclosure, different zero-carbon fuels can be adapted, and a perfect monitoring system is configured, and through collaborative control, the test efficiency can be improved and the economic cost can be reduced.

Description

Technical Field

[0001] This disclosure relates to the field of burner testing technology, and in particular to a test platform for multi-zero carbon fuel pulverized coal burners and its operation method. Background Technology

[0002] With the development of new energy storage and new energy sources, the power industry has gradually shifted from being dominated by thermal power to a carbon reduction model that combines thermal power with new energy generation. Currently, there has been some progress in China on the co-firing of zero-carbon fuels in coal-fired units. In the future, a comprehensive and adaptable testing platform will be needed to test the co-firing of various zero-carbon fuels. Summary of the Invention

[0003] This disclosure aims to at least partially address one of the technical problems in the related art.

[0004] Therefore, the purpose of this disclosure is to provide a test platform for a multi-zero carbon fuel pulverized coal burner and its operation method.

[0005] To achieve the above objectives, the first aspect of this disclosure provides a test platform for a multi-zero carbon fuel pulverized coal burner, comprising: a furnace, a zero-carbon fuel delivery system, a pulverized coal delivery system, a temperature detection system, a flue gas detection system, and a control system; wherein, the combustion outlet of the pulverized coal burner faces into the furnace; zero-carbon fuel is introduced into the fuel input end of the zero-carbon fuel delivery system, and the fuel output end of the zero-carbon fuel delivery system is connected to the fuel input end of the pulverized coal burner; coal is introduced into the coal feed input end of the pulverized coal delivery system, and the air-coal output end of the pulverized coal delivery system is connected to the air-coal input end of the pulverized coal burner; the detection end of the temperature detection system is disposed within the furnace and is used to detect changes in the temperature field within the furnace; the detection end of the flue gas detection system is disposed within the flue gas output end of the furnace and is used to detect changes in the flue gas composition at the flue gas output end of the furnace; the control system is used to control the fuel flow rate of the zero-carbon fuel delivery system and the air-coal concentration of the pulverized coal delivery system, and to determine the performance of the pulverized coal burner based on the temperature field changes detected by the temperature detection system and the changes in flue gas composition detected by the flue gas detection system.

[0006] Optionally, the zero-carbon fuel delivery system includes: a first switching valve and a first regulating valve; wherein, the zero-carbon fuel is introduced into the fuel input terminal of the first switching valve, and the fuel input terminal of the first regulating valve is connected to the fuel output terminal of the first switching valve, and the fuel output terminal of the first regulating valve is connected to the fuel input terminal of the pulverized coal burner; the signal output terminal of the control system is connected to the signal input terminal of the first regulating valve, and the control system is used to control the first regulating valve to conduct and control the opening degree of the first regulating valve, so as to regulate the fuel flow rate of the zero-carbon fuel delivery system.

[0007] Optionally, the zero-carbon fuel delivery system further includes: a second regulating valve, a second switching valve, a third switching valve, a third regulating valve, a fourth switching valve, a fourth regulating valve, a fifth regulating valve, a fifth switching valve, a sixth regulating valve, and a hazardous gas leak detection unit; wherein, nitrogen gas is introduced into the nitrogen inlet of the second regulating valve, and the nitrogen inlet of the second switching valve is connected to the nitrogen outlet of the second regulating valve; the fuel inlet of the third switching valve is connected to the fuel outlet of the first regulating valve and the nitrogen outlet of the second switching valve, respectively, and the fuel inlet of the third regulating valve is connected to the fuel outlet of the third switching valve; the nitrogen inlet of the fourth switching valve is connected to the fuel outlet of the third regulating valve, and the nitrogen inlet of the fourth regulating valve is connected to the nitrogen outlet of the fourth switching valve, and nitrogen gas is discharged from the nitrogen outlet of the fourth regulating valve; the fuel inlet of the fifth regulating valve is connected to the fuel outlet of the third regulating valve, and the fuel inlet of the fifth switching valve is connected to the fuel outlet of the fifth regulating valve, and the sixth regulating valve... The fuel input terminal of the throttle valve is connected to the fuel output terminal of the fifth switching valve, and the fuel output terminal of the sixth regulating valve is connected to the fuel input terminal of the pulverized coal burner. The hazardous gas leak detection unit is used to detect hazardous gas leaks, and the signal input terminal of the control system is connected to the signal output terminal of the hazardous gas leak detection unit. The signal output terminal of the control system is connected to the signal input terminals of the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, the fifth switching valve, and the sixth regulating valve, respectively. When the hazardous gas leak detection unit detects a hazardous gas leak, the control system controls the first regulating valve to close, the second regulating valve to open, the third regulating valve to open, the fourth regulating valve to open, the fifth regulating valve to close, the sixth regulating valve to close, and the fifth switching valve to close, and controls the opening degree of the second regulating valve, the third regulating valve, and the fourth regulating valve.

[0008] Optionally, the zero-carbon fuel delivery system further includes: a first pressure detection unit, a second pressure detection unit, and a third pressure detection unit; wherein, the detection end of the first pressure detection unit is disposed between the fuel input end of the third regulating valve and the fuel output end of the third switching valve, and the first pressure detection unit is used to detect the first pressure of the zero-carbon fuel; the detection end of the second pressure detection unit is disposed between the nitrogen input end of the fourth switching valve and the fuel output end of the third regulating valve, and between the fuel input end of the fifth regulating valve and the fuel output end of the third regulating valve, and the second pressure detection unit is used to detect the second pressure of the zero-carbon fuel; the detection end of the third pressure detection unit is disposed between the fuel input end of the fifth switching valve and the fuel output end of the fifth regulating valve, and the third pressure detection unit is used to detect the third pressure of the zero-carbon fuel; the signal input end of the control system is respectively connected to the signal input end of the first pressure detection unit. The control system is connected to the signal output terminal of the first pressure detection unit, the signal output terminal of the second pressure detection unit, and the signal output terminal of the third pressure detection unit. When at least one of the first pressure detected by the first pressure detection unit, the second pressure detected by the second pressure detection unit, and the third pressure detected by the third pressure detection unit exceeds a preset pressure value, the control system controls the first regulating valve to close, the second regulating valve to close, the third regulating valve to open, the fourth regulating valve to open, the fifth regulating valve to close, the sixth regulating valve to close, and the fifth switching valve to close. It also controls the opening degree of the third regulating valve and the fourth regulating valve. Subsequently, it controls the first regulating valve to close, the second regulating valve to open, the third regulating valve to open, the fourth regulating valve to open, the fifth regulating valve to close, the sixth regulating valve to close, and the fifth switching valve to close. It also controls the opening degree of the second regulating valve, the third regulating valve, and the fourth regulating valve.

[0009] Optionally, the pulverized coal conveying system includes: a pulverized coal silo, a primary air fan, a seventh regulating valve, and an air-pulverized coal mixer; wherein, pulverized coal is introduced into the pulverized coal silo at its pulverized coal inlet, and the pulverized coal silo's pulverized coal outlet is connected to the pulverized coal pulverized coal inlet; air is introduced into the primary air inlet of the primary air fan, and the primary air inlet of the seventh regulating valve is connected to the primary air outlet of the primary air fan; the primary air outlet of the seventh regulating valve is connected to the primary air inlet of the air-pulverized coal mixer; and the air-pulverized coal outlet of the air-pulverized coal mixer is connected to the air-pulverized coal inlet of the pulverized coal burner; the signal output of the control system is connected to the signal input of the seventh regulating valve, and the control system is used to control the conduction of the seventh regulating valve and control the opening degree of the seventh regulating valve to adjust the air-pulverized coal concentration of the pulverized coal conveying system.

[0010] Optionally, the pulverized coal conveying system further includes: a coal feeder, a descending drying pipe, a coal mill, a coarse powder separator, a fine powder separator, a pulverizer, and a heater; wherein, coal is fed into the coal feeder at its coal input end, and the coal input end of the descending drying pipe is connected to the coal output end of the coal feeder; the coal input end of the coal mill is connected to the coal output end of the descending drying pipe; the pulverized coal input end of the coarse powder separator is connected to the pulverized coal output end of the coal mill; and the pulverized coal input end of the fine powder separator is connected to the coarse powder separator. The coal powder output end of the feeder is connected to the coal powder input end of the feeder and the coal powder output end of the fine powder separator. The coal powder output end of the feeder is connected to the coal powder input end of the coal powder silo. The heater is located between the primary air output end of the primary air fan and the primary air input end of the seventh regulating valve, and the primary air input end of the heater is connected to the primary air output end of the primary air fan. The primary air output end of the heater is connected to the primary air input end of the coal mill and the primary air input end of the seventh regulating valve, respectively.

[0011] Optionally, the pulverized coal conveying system further includes: an eighth switching valve, a ninth switching valve, a tenth switching valve, and an eighth regulating valve; wherein, the eighth switching valve is disposed between the primary air inlet of the heater and the primary air outlet of the primary air fan, and the primary air inlet of the eighth switching valve is connected to the primary air outlet of the primary air fan, and the primary air outlet of the eighth switching valve is connected to the primary air inlet of the heater; the ninth switching valve is disposed between the primary air outlet of the heater and the primary air inlet of the seventh regulating valve, and the primary air inlet of the ninth switching valve is connected to the primary air outlet of the heater, and the primary air outlet of the ninth switching valve is connected to the primary air inlet of the seventh regulating valve; the tenth switching valve and the eighth regulating valve are disposed between the primary air outlet of the heater and the primary air outlet of the coal mill. The primary air input terminals are connected to each other, and the primary air input terminal of the tenth switching valve is connected to the primary air output terminal of the heater, the primary air input terminal of the eighth regulating valve is connected to the primary air output terminal of the tenth switching valve, and the primary air output terminal of the eighth regulating valve is connected to the primary air input terminal of the coal mill; the signal output terminal of the control system is connected to the signal input terminals of the ninth switching valve, the tenth switching valve, and the eighth regulating valve, respectively; and / or, the test platform further includes: a combustion-supporting system, the combustion-supporting system including: a combustion-supporting fan and an eleventh switching valve, the combustion-supporting air input terminal of the combustion-supporting fan is supplied with air, and the combustion-supporting air input terminal of the eleventh switching valve is connected to the combustion-supporting air output terminal of the combustion-supporting fan, and the combustion-supporting air output terminal of the eleventh switching valve is connected to the combustion-supporting air input terminal of the pulverized coal burner.

[0012] Optionally, the temperature detection system includes: multiple thermocouples, a horizontal infrared imager, and a vertical infrared imager; wherein the multiple thermocouples are spaced apart within the furnace, and the thermocouples are used to collect the temperature at corresponding locations within the furnace; the detection end of the horizontal infrared imager faces the furnace and is used to collect infrared images of the furnace in the horizontal direction; the detection end of the vertical infrared imager faces the furnace and is used to collect infrared images of the furnace in the vertical direction; the signal input terminal of the control system is connected to the signal output terminals of the thermocouples, the horizontal infrared imager, and the vertical infrared imager, respectively; and the control system is used to obtain the temperature field change within the furnace based on the temperature collected by the thermocouples, the infrared images collected by the horizontal infrared imager, and the infrared images collected by the vertical infrared imager.

[0013] Optionally, the test platform further includes: a flue gas treatment system, which includes: a spray tower, an induced draft fan, and a chimney. The flue gas inlet of the spray tower is connected to the flue gas outlet of the furnace, the flue gas inlet of the induced draft fan is connected to the flue gas outlet of the spray tower, and the flue gas inlet of the chimney is connected to the flue gas outlet of the induced draft fan. Flue gas is discharged from the flue gas outlet of the chimney. The flue gas detection system includes: a twelfth switching valve, a flue gas analysis device, and a thirteenth switching valve. The flue gas inlet of the twelfth switching valve is connected to the flue gas outlet of the furnace. The flue gas input terminal of the flue gas analyzer is connected to the flue gas output terminal of the twelfth switching valve. The flue gas analyzer is used to collect the flue gas composition at the flue gas output terminal of the furnace. The flue gas input terminal of the thirteenth switching valve is connected to the flue gas output terminal of the flue gas analyzer, and the flue gas output terminal of the thirteenth switching valve is connected to the flue gas input terminal of the chimney. The signal input terminal of the control system is connected to the signal output terminal of the flue gas analyzer, and the control system is used to obtain the change in flue gas composition at the flue gas output terminal of the furnace based on the flue gas composition collected by the flue gas analyzer.

[0014] The second aspect of this disclosure provides a method for operating a test platform for a multi-zero-carbon fuel pulverized coal burner as provided in the first aspect of this disclosure, comprising: controlling the furnace of the test platform to a negative pressure state; starting the zero-carbon fuel delivery system and the pulverized coal delivery system of the test platform, such that the zero-carbon fuel delivery system delivers zero-carbon fuel to the pulverized coal burner, and the pulverized coal delivery system delivers air-coal mixture to the pulverized coal burner, and igniting the pulverized coal burner; controlling the fuel flow rate of the zero-carbon fuel delivery system and the air-coal mixture concentration of the pulverized coal delivery system; and determining the performance of the pulverized coal burner based on the temperature field changes detected by the temperature detection system and the flue gas composition changes detected by the flue gas detection system.

[0015] The technical solution provided in this disclosure may include the following beneficial effects:

[0016] It can provide a complete platform for testing zero-carbon pulverized coal burners, adapt to different zero-carbon fuel inputs, and is equipped with a complete monitoring system. Through coordinated control, it can improve testing efficiency, reduce economic costs, and provide effective technical support for the large-scale co-firing of zero-carbon fuels in coal-fired units.

[0017] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the structure of a multi-zero carbon fuel pulverized coal burner test platform proposed in one embodiment of this disclosure; As shown in the figure: 1. Zero-carbon fuel delivery system; 11. First switch valve; 12. First regulating valve; 13. Second regulating valve; 14. Second switch valve; 15. Third switch valve; 16. Third regulating valve; 17. Fourth switch valve; 18. Fourth regulating valve; 19. Fifth regulating valve; 110. Fifth switch valve; 111. Sixth regulating valve; 112. Hazardous gas leak detection unit; 113. First pressure detection unit; 114. Second pressure detection unit; 115. Third pressure detection unit; 116. Flame arrester; 2. Pulverized coal conveying system; 21. Pulverized coal silo; 22. Primary air fan; 23. Seventh regulating valve; 24. Air-powder mixer; 25. Coal feeder; 26. Downward drying pipe; 27. Coal mill; 28. Coarse powder separator; 29. ​​Fine powder separator; 210. Pulverized coal feeder; 211. Heater; 212. Eighth switching valve; 213. Ninth switching valve; 214. Tenth switching valve; 215. Eighth regulating valve. 3. Furnace chamber; 4. Temperature detection system; 41. Temperature measuring thermocouple; 42. Horizontal infrared imager; 43. Vertical infrared imager. 5. Flue gas detection system; 51. Twelfth switch valve; 52. Flue gas analysis device; 53. Thirteenth switch valve; 6. Combustion-supporting system; 61. Combustion-supporting fan; 62. Eleventh switching valve; 7. Flue gas treatment system; 71. Spray tower; 72. Exhaust fan; 73. Chimney; 8. Electromagnetic ignition device. Detailed Implementation

[0019] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0020] like Figure 1 As shown in the figure, this disclosure proposes a test platform for a multi-zero carbon fuel pulverized coal burner, including: a furnace 3, a zero carbon fuel conveying system 1, a pulverized coal conveying system 2, a temperature detection system 4, a flue gas detection system 5, and a control system (not shown in the figure). The combustion outlet of the pulverized coal burner faces into the furnace 3; zero-carbon fuel is introduced into the fuel input end of the zero-carbon fuel conveying system 1, and the fuel output end of the zero-carbon fuel conveying system 1 is connected to the fuel input end of the pulverized coal burner; coal is introduced into the coal feed input end of the pulverized coal conveying system 2, and the air-coal output end of the pulverized coal conveying system 2 is connected to the air-coal input end of the pulverized coal burner; the detection end of the temperature detection system 4 is set inside the furnace 3 and is used to detect changes in the temperature field inside the furnace 3; the detection end of the flue gas detection system 5 is set inside the flue gas output end of the furnace 3 and is used to detect changes in the flue gas composition at the flue gas output end of the furnace 3; the control system is used to control the fuel flow rate of the zero-carbon fuel conveying system 1 and the air-coal concentration of the pulverized coal conveying system 2, and to judge the performance (combustion performance, environmental protection indicators, etc.) of the pulverized coal burner based on the temperature field changes detected by the temperature detection system 4 and the flue gas composition changes detected by the flue gas detection system 5.

[0021] Understandably, since zero-carbon fuel is introduced into the fuel input end of the zero-carbon fuel delivery system 1, and the fuel output end of the zero-carbon fuel delivery system 1 is connected to the fuel input end of the pulverized coal burner, the zero-carbon fuel delivery system 1 can deliver different types of zero-carbon fuel to the pulverized coal burner. Furthermore, since coal is introduced into the coal input end of the pulverized coal delivery system 2, and the air-coal output end of the pulverized coal delivery system 2 is connected to the air-coal input end of the pulverized coal burner, the pulverized coal delivery system 2 can deliver air-coal to the pulverized coal burner. Thus, combustion of the pulverized coal burner is achieved by utilizing the supply of zero-carbon fuel and air-coal.

[0022] In addition, the control system controls the fuel flow rate of the zero-carbon fuel delivery system 1 and the air-coal concentration of the pulverized coal delivery system 2, and judges the performance of the pulverized coal burner based on the temperature field changes detected by the temperature detection system 4 and the flue gas composition changes detected by the flue gas detection system 5, thereby realizing comprehensive combustion monitoring of the pulverized coal burner.

[0023] Therefore, it can provide a complete platform for testing zero-carbon fuel pulverized coal burners, adaptable to different zero-carbon fuel inputs, and equipped with a complete monitoring system. Through coordinated control, it can improve testing efficiency, reduce economic costs, and provide effective technical support for the large-scale co-firing of zero-carbon fuels in coal-fired units.

[0024] It should be noted that the test platform in this embodiment can effectively test the performance parameters of the zero-carbon fuel pulverized coal burner by adjusting the fuel flow rate and air-coal concentration, and by detecting the changes in the temperature field inside the furnace 3 and the changes in the flue gas composition at the flue gas output end of the furnace 3, thus providing a technical basis for its practical application in power plants.

[0025] The furnace 3 is used to provide combustion space for the pulverized coal burner, which injects the zero-carbon fuel conveyed by the zero-carbon fuel conveying system 1 and the air-coal conveying system 2 into the furnace 3 for mixed combustion.

[0026] For pulverized coal burners, a flame arrester 116 can be installed at the fuel input end to improve the operational safety of the system. In addition, the pulverized coal burner is equipped with an electromagnetic ignition device 8 to achieve ignition and combustion.

[0027] The zero-carbon fuel delivery system 1 is used to deliver different types of zero-carbon fuels (hydrogen, ammonia, biomass gas, methanol, methane, etc.) to the pulverized coal burner. The specific type of the zero-carbon fuel delivery system 1 can be set according to actual needs and there are no restrictions on it.

[0028] In addition, in order to meet the needs of various zero-carbon fuel transportation, the pipelines of the zero-carbon fuel transportation system 1 are all made of 316L material and are all equipped with electric heat tracing. If the fuel is easy to condense at room temperature, the electric heat tracing is turned on; if the fuel can be transported at room temperature, the electric heat tracing is turned off.

[0029] The pulverized coal conveying system 2 is used to convey air and pulverized coal to the pulverized coal burner. The specific type of the pulverized coal conveying system 2 can be set according to actual needs and there are no restrictions on it.

[0030] The pulverized coal used in the tests came from both commonly used pulverized coal from power plants and pulverized coal with different calorific values. During the tests, the pulverized coal with higher calorific value and easier ignition was tested first, progressing from easy to difficult, and finally the commonly used pulverized coal from power plants was tested to ensure the safety and efficiency of the test process.

[0031] Temperature detection system 4 is used to detect changes in the temperature field inside furnace 3, and flue gas detection system 5 is used to detect changes in flue gas composition at the flue gas output end of furnace 3. The specific types of temperature detection system 4 and flue gas detection system 5 can be set according to actual needs, and there are no restrictions on them.

[0032] like Figure 1As shown, in some embodiments, the zero-carbon fuel delivery system 1 includes a first switching valve 11 and a first regulating valve 12. Zero-carbon fuel is supplied to the fuel input terminal of the first switching valve 11, and the fuel input terminal of the first regulating valve 12 is connected to the fuel output terminal of the first switching valve 11. The fuel output terminal of the first regulating valve 12 is connected to the fuel input terminal of the pulverized coal burner. The signal output terminal of the control system is connected to the signal input terminal of the first regulating valve 12. The control system is used to control the first regulating valve 12 to conduct and control the opening degree of the first regulating valve 12, thereby regulating the fuel flow rate of the zero-carbon fuel delivery system 1.

[0033] It is understandable that, since zero-carbon fuel is introduced into the fuel input end of the first switching valve 11, and the fuel input end of the first regulating valve 12 is connected to the fuel output end of the first switching valve 11, and the fuel output end of the first regulating valve 12 is connected to the fuel input end of the pulverized coal burner, the first switching valve 11 and the first regulating valve 12 can selectively open the zero-carbon fuel delivery path of the zero-carbon fuel delivery system 1, respectively. Furthermore, the opening degree of the zero-carbon fuel delivery path can also be adjusted using the first regulating valve 12. Specifically, the control system controls the first regulating valve 12 to open and controls the opening degree of the first regulating valve 12 to adjust the fuel flow rate of the zero-carbon fuel delivery system 1.

[0034] It should be noted that the first switching valve 11 is used to selectively open the zero-carbon fuel delivery path. The specific type of the first switching valve 11 can be set according to actual needs and is not limited thereto. For example, the first switching valve 11 can be a manual switching valve. In addition, the first switching valve 11 can also be an electric switching valve controlled by the control system.

[0035] The first regulating valve 12 is used to regulate the opening of the zero-carbon fuel delivery passage to regulate the fuel flow. The specific type of the first regulating valve 12 can be set according to actual needs and is not limited thereto. For example, the first regulating valve 12 can be an electric regulating valve.

[0036] like Figure 1As shown, in some embodiments, the zero-carbon fuel delivery system 1 further includes: a second regulating valve 13, a second switching valve 14, a third switching valve 15, a third regulating valve 16, a fourth switching valve 17, a fourth regulating valve 18, a fifth regulating valve 19, a fifth switching valve 110, a sixth regulating valve 111, and a hazardous gas leak detection unit 112; wherein, nitrogen gas is introduced into the nitrogen input terminal of the second regulating valve 13, and the nitrogen input terminal of the second switching valve 14 and the nitrogen output terminal of the second regulating valve 13 are connected; the fuel input terminal of the third switching valve 15 is respectively connected to the first regulating valve The fuel output terminal of valve 12 is connected to the nitrogen output terminal of the second switching valve 14; the fuel input terminal of the third regulating valve 16 is connected to the fuel output terminal of the third switching valve 15; the nitrogen input terminal of the fourth switching valve 17 is connected to the fuel output terminal of the third regulating valve 16, and the nitrogen input terminal of the fourth regulating valve 18 is connected to the nitrogen output terminal of the fourth switching valve 17, with nitrogen being discharged from the nitrogen output terminal of the fourth regulating valve 18; the fuel input terminal of the fifth regulating valve 19 is connected to the fuel output terminal of the third regulating valve 16, and the fuel input terminal of the fifth switching valve 110 is connected to the fuel output terminal of the fifth regulating valve 15. The fuel output terminal of valve 9 is connected to the fuel input terminal of the sixth regulating valve 111 and the fuel output terminal of the fifth switching valve 110. The fuel output terminal of the sixth regulating valve 111 is connected to the fuel input terminal of the pulverized coal burner. The hazardous gas leak detection unit 112 is used to detect hazardous gas leaks, and the signal input terminal of the control system is connected to the signal output terminal of the hazardous gas leak detection unit 112. The signal output terminal of the control system is respectively connected to the signal input terminal of the second regulating valve 13, the signal input terminal of the third regulating valve 16, the signal input terminal of the fourth regulating valve 18, and the signal input terminal of the fifth switching valve 110. The signal input terminals of the fifth regulating valve 19, the fifth switching valve 110, and the sixth regulating valve 111 are connected. The control system is used to control the first regulating valve 12 to be shut off, the second regulating valve 13 to be turned on, the third regulating valve 16 to be turned on, the fourth regulating valve 18 to be turned on, the fifth regulating valve 19 to be shut off, the sixth regulating valve 111 to be shut off, and the fifth switching valve 110 to be shut off when the hazardous gas leak detection unit 112 detects a hazardous gas leak. It also controls the opening degree of the second regulating valve 13, the third regulating valve 16, and the fourth regulating valve 18.

[0037] Understandably, when zero-carbon fuel is being transported normally, the first switching valve 11, the first regulating valve 12, the third switching valve 15, the third regulating valve 16, the fifth regulating valve 19, the fifth switching valve 110, and the sixth regulating valve 111 are all open, and the control system controls the opening degree of the first regulating valve 12, the third regulating valve 16, and the fifth regulating valve 19 to achieve fuel flow control.

[0038] When the hazardous gas leak detection unit 112 detects a hazardous gas leak, the control module controls the first regulating valve 12 to shut off, the second regulating valve 13 to open, the third regulating valve 16 to open, the fourth regulating valve 18 to open, the fifth regulating valve 19 to shut off, the sixth regulating valve 111 to shut off, and the fifth switching valve 110 to shut off, thereby using nitrogen to purge the zero-carbon fuel delivery path and reduce the damage from the hazardous source.

[0039] It should be noted that nitrogen purging of the zero-carbon fuel delivery path can be used to ensure safe operation before testing and in other emergencies.

[0040] The third regulating valve 16, the fifth regulating valve 19, and the sixth regulating valve 111 are used to regulate the fuel flow rate in the zero-carbon fuel delivery path. The specific types of the third regulating valve 16, the fifth regulating valve 19, and the sixth regulating valve 111 can be set according to actual needs and are not limited thereto. For example, the third regulating valve 16, the fifth regulating valve 19, and the sixth regulating valve 111 can all be electric regulating valves.

[0041] The third switching valve 15 and the fifth switching valve 110 are used to selectively open the zero-carbon fuel delivery path. The specific types of the third switching valve 15 and the fifth switching valve 110 can be set according to actual needs and are not limited thereto. For example, the third switching valve 15 and the fifth switching valve 110 can be manual switching valves. Alternatively, the third switching valve 15 and the fifth switching valve 110 can also be electric switching valves controlled by the control system.

[0042] The second regulating valve 13 and the fourth regulating valve 18 are used to regulate the nitrogen flow rate in the nitrogen purging passage. The specific types of the second regulating valve 13 and the fourth regulating valve 18 can be set according to actual needs and are not limited thereto. For example, the second regulating valve 13 and the fourth regulating valve 18 can be electric regulating valves.

[0043] The second switching valve 14 and the fourth switching valve 17 are used to selectively open the nitrogen purging passage. The specific types of the second switching valve 14 and the fourth switching valve 17 can be set according to actual needs and are not limited thereto. For example, the second switching valve 14 and the fourth switching valve 17 can be manual switching valves. Alternatively, the second switching valve 14 and the fourth switching valve 17 can also be electric switching valves controlled by the control system.

[0044] The hazardous gas leak detection unit 112 is arranged near the zero-carbon fuel delivery path to detect the leakage of hazardous gases at the zero-carbon fuel delivery path. The specific type of the hazardous gas leak detection unit 112 can be set according to actual needs and is not limited thereto. For example, the hazardous gas leak detection unit 112 can be an integrated detection unit of various gas sensors.

[0045] like Figure 1 As shown, in some embodiments, the zero-carbon fuel delivery system 1 further includes: a first pressure detection unit 113, a second pressure detection unit 114, and a third pressure detection unit 115; wherein, the detection end of the first pressure detection unit 113 is disposed between the fuel input end of the third regulating valve 16 and the fuel output end of the third switching valve 15, and the first pressure detection unit 113 is used to detect the first pressure of the zero-carbon fuel; the detection end of the second pressure detection unit 114 is disposed between the nitrogen input end of the fourth switching valve 17 and the fuel output end of the third regulating valve 16, and between the fuel input end of the fifth regulating valve 19 and the fuel output end of the third regulating valve 16, and the second pressure detection unit 114 is used to detect the second pressure of the zero-carbon fuel; the detection end of the third pressure detection unit 115 is disposed between the fuel input end of the fifth switching valve 110 and the fuel output end of the fifth regulating valve 19, and the third pressure detection unit 115 is used to detect the third pressure of the zero-carbon fuel; the signal input end of the control system is respectively connected to the first pressure detection unit 113. The signal output terminals of the first pressure detection unit 13, the second pressure detection unit 114, and the third pressure detection unit 115 are connected. The control system is used to control the first regulating valve 12 to be shut off, the second regulating valve 13 to be shut off, the third regulating valve 16 to be turned on, the fourth regulating valve 18 to be turned on, the fifth regulating valve 19 to be shut off, the sixth regulating valve 111 to be shut off, and the fifth switching valve 110 to be shut off when at least one of the first pressure detected by the first pressure detection unit 113, the second pressure detected by the second pressure detection unit 114, and the third pressure detected by the third pressure detection unit 115 exceeds a preset pressure value. It also controls the opening degree of the third regulating valve 16 and the fourth regulating valve 18. Subsequently, it controls the first regulating valve 12 to be shut off, the second regulating valve 13 to be turned on, the third regulating valve 16 to be turned on, the fourth regulating valve 18 to be turned on, the fifth regulating valve 19 to be shut off, the sixth regulating valve 111 to be shut off, and the fifth switching valve 110 to be shut off. It also controls the opening degree of the second regulating valve 13, the third regulating valve 16, and the fourth regulating valve 18.

[0046] It is understandable that, since the detection end of the first pressure detection unit 113 is located between the fuel input end of the third regulating valve 16 and the fuel output end of the third switching valve 15, and the signal input end of the control system is connected to the signal output end of the first pressure detection unit 113, the control system can obtain the first pressure of the zero-carbon fuel in the zero-carbon fuel delivery system 1 using the first pressure detection unit 113.

[0047] Since the detection end of the second pressure detection unit 114 is located between the nitrogen input end of the fourth switching valve 17 and the fuel output end of the third regulating valve 16, and between the fuel input end of the fifth regulating valve 19 and the fuel output end of the third regulating valve 16, and the signal input end of the control system is connected to the signal output end of the second pressure detection unit 114, the control system can obtain the second pressure of the zero-carbon fuel in the zero-carbon fuel delivery system 1 using the second pressure detection unit 114.

[0048] Since the detection end of the third pressure detection unit 115 is located between the fuel input end of the fifth switching valve 110 and the fuel output end of the fifth regulating valve 19, and the signal input end of the control system is connected to the signal output end of the third pressure detection unit 115, the control system can obtain the third pressure of the zero-carbon fuel in the zero-carbon fuel delivery system 1 using the third pressure detection unit 115.

[0049] Based on this, when at least one of the first pressure detected by the first pressure detection unit 113, the second pressure detected by the second pressure detection unit 114, and the third pressure detected by the third pressure detection unit 115 exceeds a preset pressure value, the control system controls the first regulating valve 12 to shut off, the second regulating valve 13 to shut off, the third regulating valve 16 to open, the fourth regulating valve 18 to open, the fifth regulating valve 19 to shut off, the sixth regulating valve 111 to shut off, and the fifth switching valve 110 to shut off, and controls the opening degree of the third regulating valve 16 and the opening degree of the fourth regulating valve 18, thereby realizing the depressurization of the zero-carbon fuel delivery passage.

[0050] Subsequently, the control system controls the first regulating valve 12 to close, the second regulating valve 13 to open, the third regulating valve 16 to open, the fourth regulating valve 18 to open, the fifth regulating valve 19 to close, the sixth regulating valve 111 to close, and the fifth switching valve 110 to close, and controls the opening degree of the second regulating valve 13, the third regulating valve 16, and the fourth regulating valve 18, thereby realizing the nitrogen purging of the zero-carbon fuel delivery path.

[0051] It should be noted that the first pressure detection unit 113 is used to detect the first pressure of the zero-carbon fuel, the second pressure detection unit 114 is used to detect the second pressure of the zero-carbon fuel, and the third pressure detection unit 115 is used to detect the third pressure of the zero-carbon fuel. The specific types of the first pressure detection unit 113, the second pressure detection unit 114, and the third pressure detection unit 115 can be set according to actual needs and are not limited thereto. For example, the first pressure detection unit 113, the second pressure detection unit 114, and the third pressure detection unit 115 can be pressure sensors.

[0052] like Figure 1As shown, in some embodiments, the pulverized coal conveying system 2 includes: a pulverized coal silo 21, a primary air fan 22, a seventh regulating valve 23, and an air-pulverized coal mixer 24. Pulverized coal is introduced into the pulverized coal silo 21 at its input end, and the pulverized coal output end of the pulverized coal silo 21 is connected to the pulverized coal input end of the air-pulverized coal mixer 24. Air is introduced into the primary air input end of the primary air fan 22, and the primary air input end of the seventh regulating valve 23 is connected to the primary air output end of the primary air fan 22. The primary air output end of the seventh regulating valve 23 is connected to the primary air input end of the air-pulverized coal mixer 24, and the air-pulverized coal output end of the air-pulverized coal mixer 24 is connected to the air-pulverized coal input end of the pulverized coal burner. The signal output end of the control system is connected to the signal input end of the seventh regulating valve 23, and the control system is used to control the conduction of the seventh regulating valve 23 and control the opening degree of the seventh regulating valve 23 to adjust the air-pulverized coal concentration of the pulverized coal conveying system 2.

[0053] It is understandable that, since coal powder is introduced into the coal powder inlet of the coal powder silo 21 and the coal powder outlet of the coal powder silo 21 is connected to the coal powder inlet of the air-coal mixer 24, the coal powder silo 21 can provide coal powder to the air-coal mixer 24. Furthermore, since air is introduced into the primary air inlet of the primary air fan 22 and the primary air inlet of the seventh regulating valve 23 is connected to the primary air outlet of the primary air fan 22, and the primary air outlet of the seventh regulating valve 23 is connected to the primary air inlet of the air-coal mixer 24, the primary air fan 22 can provide primary air to the air-coal mixer 24. At the same time, the opening of the primary air conveying passage can also be controlled by the seventh regulating valve 23. Specifically, the control system controls the seventh regulating valve 23 to conduct and controls the opening of the seventh regulating valve 23 to adjust the coal powder concentration of the coal powder conveying system 2.

[0054] It should be noted that the pulverized coal bin 21 is used to supply pulverized coal to the air-coal mixer 24. The specific type of pulverized coal bin 21 can be set according to actual needs, and there are no restrictions on it.

[0055] The primary air fan 22 is used to provide primary air to the air-powder mixer 24. The specific type of the primary air fan 22 can be set according to actual needs and there is no restriction on it.

[0056] The seventh regulating valve 23 is used to regulate the opening of the primary air conveying passage to regulate the air-to-powder concentration. The specific type of the seventh regulating valve 23 can be set according to actual needs and is not limited thereto. For example, the seventh regulating valve 23 can be an electric regulating valve.

[0057] The air-coal mixer 24 is used to mix pulverized coal and primary air, and to provide the air-coal mixture required for combustion in the pulverized coal burner. In addition, the air-coal mixture concentration can be adjusted by controlling the flow rate of the primary air. The specific type of air-coal mixer 24 can be set according to actual needs and there are no restrictions on it.

[0058] like Figure 1 As shown, in some embodiments, the pulverized coal conveying system 2 further includes: a coal feeder 25, a descending drying pipe 26, a coal mill 27, a coarse powder separator 28, a fine powder separator 29, a pulverizer 210, and a heater 211; wherein, coal is fed into the coal feeder 25 at its coal input end, and the coal input end of the descending drying pipe 26 is connected to the coal output end of the coal feeder 25; the coal input end of the coal mill 27 is connected to the coal output end of the descending drying pipe 26; the pulverized coal input end of the coarse powder separator 28 is connected to the pulverized coal output end of the coal mill 27; and the pulverized coal input end of the fine powder separator 29 is connected to the coal output end of the coal mill 27. The coal powder output end of the coarse powder separator 28 is connected to the coal powder input end of the coal feeder 210 and the coal powder output end of the fine powder separator 29. The coal powder output end of the coal feeder 210 is connected to the coal powder input end of the coal powder silo 21. The heater 211 is located between the primary air output end of the primary air fan 22 and the primary air input end of the seventh regulating valve 23. The primary air input end of the heater 211 is connected to the primary air output end of the primary air fan 22. The primary air output end of the heater 211 is connected to the primary air input end of the coal mill 27 and the primary air input end of the seventh regulating valve 23, respectively.

[0059] Understandably, the coal material is conveyed by the coal feeder 25, dried by the descending drying pipe 26, ground by the coal mill 27, separated by the coarse powder separator 28, separated by the fine powder separator 29, and conveyed by the pulverizer 210, thereby realizing the conversion of coal material into pulverized coal and storing it in the pulverized coal silo 21, thus ensuring a stable supply of air-coal to the pulverized coal burner.

[0060] For example, after the gas-powder mixture is screened by a dynamic separator, the qualified coal powder enters the cone bottom of the coal powder silo 21 at a calibrated solid-to-gas ratio, and is prevented from accumulating under the action of 0.03MPa fluidizing gas.

[0061] In addition, by using the heater 211, the primary air from the primary air blower 22 can be converted into a high-temperature drying medium under the heating of the heater 211, thereby ensuring the high-quality preparation of the air powder.

[0062] For example, heated air flows into the coal mill 27, where it pulverizes the raw coal into coal powder with an R90 ≤ 18% in the grinding zone.

[0063] It should be noted that the coal feeder 25 is used for feeding coal, the descending drying pipe 26 is used for drying coal, the coal mill 27 is used for grinding coal, the coarse powder separator 28 is used for preliminary dynamic screening of coal, the fine powder separator 29 is used for further dynamic screening of coal, the pulverizer 210 is used for feeding pulverized coal, and the heater 211 is used for heating primary air. The specific types of the coal feeder 25, the descending drying pipe 26, the coal mill 27, the coarse powder separator 28, the fine powder separator 29, the pulverizer 210, and the heater 211 can be set according to actual needs and are not restricted.

[0064] like Figure 1 As shown, in some embodiments, the pulverized coal conveying system 2 further includes: an eighth switching valve 212, a ninth switching valve 213, a tenth switching valve 214, and an eighth regulating valve 215; wherein, the eighth switching valve 212 is disposed between the primary air input end of the heater 211 and the primary air output end of the primary air fan 22, and the primary air input end of the eighth switching valve 212 is connected to the primary air output end of the primary air fan 22, and the primary air output end of the eighth switching valve 212 is connected to the primary air input end of the heater 211; the ninth switching valve 213 is disposed between the primary air output end of the heater 211 and the primary air input end of the seventh regulating valve 23, and the primary air input end of the ninth switching valve 213 is connected to the primary air output end of the heater 211. The primary air output terminal of the ninth switching valve 213 is connected to the primary air input terminal of the seventh regulating valve 23; the tenth switching valve 214 and the eighth regulating valve 215 are located between the primary air output terminal of the heater 211 and the primary air input terminal of the coal mill 27, and the primary air input terminal of the tenth switching valve 214 is connected to the primary air output terminal of the heater 211, the primary air input terminal of the eighth regulating valve 215 is connected to the primary air output terminal of the tenth switching valve 214, and the primary air output terminal of the eighth regulating valve 215 is connected to the primary air input terminal of the coal mill 27; the signal output terminal of the control system is connected to the signal input terminals of the ninth switching valve 213, the tenth switching valve 214, and the eighth regulating valve 215, respectively.

[0065] Understandably, since the eighth switch valve 212 is located between the primary air input end of the heater 211 and the primary air output end of the primary air fan 22, and the ninth switch valve 213 is located between the primary air output end of the heater 211 and the primary air input end of the seventh regulating valve 23, the eighth switch valve 212 and the ninth switch valve 213 can selectively conduct the primary air conveying path from the pulverized coal conveying system 2 to the pulverized coal burner.

[0066] Since the tenth switch valve 214 and the eighth regulating valve 215 are located between the primary air output end of the heater 211 and the primary air input end of the coal mill 27, the tenth switch valve 214 and the eighth regulating valve 215 can selectively open the primary air conveying passage from the pulverized coal conveying system 2 to the coal mill 27, and the opening degree of the primary air conveying passage from the pulverized coal conveying system 2 to the coal mill 27 can be adjusted by using the eighth regulating valve 215.

[0067] It should be noted that the eighth switch valve 212 and the ninth switch valve 213 are used to selectively connect the primary air conveying path from the pulverized coal conveying system 2 to the pulverized coal burner. The specific types of the eighth switch valve 212 and the ninth switch valve 213 can be set according to actual needs and are not limited thereto. For example, the eighth switch valve 212 and the ninth switch valve 213 can be manual switch valves. Alternatively, the eighth switch valve 212 and the ninth switch valve 213 can also be electric switch valves controlled by the control system.

[0068] The tenth switch valve 214 is used to selectively open the primary air conveying path from the pulverized coal conveying system 2 to the coal mill 27. The specific type of the tenth switch valve 214 can be set according to actual needs and is not limited thereto. For example, the tenth switch valve 214 can be a manual switch valve. In addition, the tenth switch valve 214 can also be an electric switch valve controlled by the control system.

[0069] The eighth regulating valve 215 is used to regulate the opening of the primary air conveying passage from the pulverized coal conveying system 2 to the coal mill 27, so as to regulate the primary air flow to the coal mill 27. The specific type of the eighth regulating valve 215 can be set according to actual needs and there is no restriction. For example, the eighth regulating valve 215 can be an electric regulating valve.

[0070] like Figure 1 As shown, in some embodiments, the test platform further includes a combustion-supporting system 6, which includes a combustion-supporting fan 61 and an eleventh switching valve 62. Air is introduced into the combustion-supporting air input end of the combustion-supporting fan 61, and the combustion-supporting air input end of the eleventh switching valve 62 is connected to the combustion-supporting air output end of the combustion-supporting fan 61. The combustion-supporting air output end of the eleventh switching valve 62 is connected to the combustion-supporting air input end of the pulverized coal burner.

[0071] Understandably, since the combustion air input end of the combustion air blower 61 is supplied with air, and the combustion air input end of the eleventh switch valve 62 is connected to the combustion air output end of the combustion air blower 61, and the combustion air output end of the eleventh switch valve 62 is connected to the combustion air input end of the pulverized coal burner, the combustion air blower 61 can supplement the pulverized coal burner with combustion air, thereby ensuring the efficient combustion of the pulverized coal burner. In addition, the eleventh switch valve 62 can be used to selectively open the combustion air delivery path, thereby making the testing of the pulverized coal burner more flexible and stable.

[0072] It should be noted that the combustion air blower 61 is used to provide combustion air to the pulverized coal burner. The specific type of combustion air blower 61 can be set according to actual needs, and there are no restrictions on it.

[0073] The eleventh switching valve 62 is used to selectively open the combustion air supply path. The specific type of the eleventh switching valve 62 can be set according to actual needs and is not limited thereto. For example, the eleventh switching valve 62 can be a manual switching valve. In addition, the eleventh switching valve 62 can also be an electric switching valve controlled by the control system.

[0074] like Figure 1 As shown, in some embodiments, the temperature detection system 4 includes: multiple thermocouples 41, a horizontal infrared imager 42, and a vertical infrared imager 43; wherein, the multiple thermocouples 41 are spaced apart inside the furnace 3, and the thermocouples 41 are used to collect the temperature at corresponding positions inside the furnace 3; the detection end of the horizontal infrared imager 42 faces the furnace 3 and is used to collect infrared images of the furnace 3 in the horizontal direction; the detection end of the vertical infrared imager 43 faces the furnace 3 and is used to collect infrared images of the furnace 3 in the vertical direction; the signal input terminal of the control system is connected to the signal output terminal of the thermocouples 41, the signal output terminal of the horizontal infrared imager 42, and the signal output terminal of the vertical infrared imager 43, respectively, and the control system is used to obtain the temperature field change inside the furnace 3 based on the temperature collected by the thermocouples 41, the infrared image collected by the horizontal infrared imager 42, and the infrared image collected by the vertical infrared imager 43.

[0075] Understandably, since multiple temperature-measuring thermocouples 41 are spaced apart inside the furnace 3, and the signal input terminal of the control system is connected to the signal output terminal of the temperature-measuring thermocouples 41, the control system can use the multiple temperature-measuring thermocouples 41 to obtain the temperature at various locations inside the furnace 3; since the detection end of the horizontal infrared imager 42 faces the furnace 3, and the signal input terminal of the control system is connected to the signal output terminal of the horizontal infrared imager 42, the control system can use the horizontal infrared imager 42 to obtain an infrared image of the furnace 3 in the horizontal direction; since the detection end of the vertical infrared imager 43 faces the furnace 3, and the signal input terminal of the control system is connected to the signal output terminal of the vertical infrared imager 43, the control system can use the vertical infrared imager 43 to obtain an infrared image of the furnace 3 in the vertical direction.

[0076] Therefore, the control system obtains the temperature field changes inside the furnace 3 based on the temperature collected by the temperature measuring thermocouple 41, the infrared image collected by the horizontal infrared imager 42, and the infrared image collected by the vertical infrared imager 43.

[0077] It should be noted that the temperature measuring thermocouple 41 is used to collect the temperature at the corresponding location inside the furnace 3. The specific type of temperature measuring thermocouple 41 can be set according to actual needs, and there are no restrictions on it.

[0078] Multiple thermocouples 41 form a temperature acquisition network, thereby enabling comprehensive temperature monitoring within the furnace 3. For example, the temperature detection system 4 includes nine thermocouples 41 at different locations, arranged inside the furnace 3. Depending on the distance, nine measuring points are arranged from 1m, 2m, and 3m away from the pulverized coal burner outlet and from 1m, 2m, and 3m away from the horizontal position of the pulverized coal burner, for detecting temperature changes at a distance of 3m×3m in front of the pulverized coal burner.

[0079] The horizontal infrared imager 42 is used to acquire infrared images of the furnace 3 in the horizontal direction, and the vertical infrared imager 43 is used to acquire infrared images of the furnace 3 in the vertical direction. The horizontal infrared imager 42 and the vertical infrared imager 43 work together to form a three-dimensional temperature field inside the furnace, which corresponds to the thermocouple and accurately tests the performance of the pulverized coal burner. The specific types of the horizontal infrared imager 42 and the vertical infrared imager 43 can be set according to actual needs and there are no restrictions on this.

[0080] like Figure 1 As shown, in some embodiments, the test platform further includes: a flue gas treatment system 7, which includes: a spray tower 71, an induced draft fan 72, and a chimney 73. The flue gas inlet of the spray tower 71 is connected to the flue gas outlet of the furnace 3, the flue gas inlet of the induced draft fan 72 is connected to the flue gas outlet of the spray tower 71, and the flue gas inlet of the chimney 73 is connected to the flue gas outlet of the induced draft fan 72. Flue gas is discharged from the flue gas outlet of the chimney 73. The flue gas detection system 5 includes: a twelfth switching valve 51, a flue gas analysis device 52, and a thirteenth switching valve 53. The flue gas inlet of the twelfth switching valve 51 is connected to the furnace. The flue gas output terminal of furnace 3 is connected to the flue gas input terminal of flue gas analyzer 52 and the flue gas output terminal of twelfth switch valve 51. Flue gas analyzer 52 is used to collect the flue gas composition at the flue gas output terminal of furnace 3. The flue gas input terminal of thirteenth switch valve 53 is connected to the flue gas output terminal of flue gas analyzer 52 and the flue gas output terminal of thirteenth switch valve 53 is connected to the flue gas input terminal of chimney 73. The signal input terminal of the control system is connected to the signal output terminal of flue gas analyzer 52, and the control system is used to obtain the change in flue gas composition at the flue gas output terminal of furnace 3 based on the flue gas composition collected by flue gas analyzer 52.

[0081] Understandably, since the flue gas inlet of the spray tower 71 is connected to the flue gas outlet of the furnace 3, the flue gas inlet of the induced draft fan 72 is connected to the flue gas outlet of the spray tower 71, and the flue gas inlet of the chimney 73 is connected to the flue gas outlet of the induced draft fan 72, and the flue gas is discharged from the flue gas outlet of the chimney 73, the flue gas discharged from the furnace 3 can be purified by the spray tower 71, thereby effectively reducing pollutant emissions and reducing investment costs.

[0082] Since the flue gas inlet of the twelfth switch valve 51 is connected to the flue gas outlet of the furnace 3, the flue gas inlet of the flue gas analyzer 52 is connected to the flue gas outlet of the twelfth switch valve 51, the flue gas inlet of the thirteenth switch valve 53 is connected to the flue gas outlet of the flue gas analyzer 52, and the flue gas outlet of the thirteenth switch valve 53 is connected to the flue gas inlet of the chimney 73, the flue gas analyzer 52 can collect the flue gas composition at the flue gas outlet of the furnace 3 when the twelfth switch valve 51 and the thirteenth switch valve 53 are turned on. Furthermore, since the signal input of the control system is connected to the signal output of the flue gas analyzer 52, the control system can obtain the change in flue gas composition at the flue gas outlet of the furnace 3 based on the flue gas composition collected by the flue gas analyzer 52.

[0083] It should be noted that the spray tower 71 is used for the spray purification of flue gas. The specific type of spray tower 71 can be set according to actual needs and is not limited thereto. For example, the spray tower 71 includes a tower body and a spray system arranged inside the tower body. The spray system uses spiral nozzles and a three-layer spray design, staggered to ensure no dead angles. After the flue gas passes through the spray tower 71, it can achieve the effects of dust removal and pollutant removal.

[0084] The induced draft fan 72 is used to extract flue gas to overcome system resistance and ensure smooth exhaust of flue gas. The specific type of induced draft fan 72 can be set according to actual needs and there are no restrictions on it.

[0085] Chimney 73 is used to discharge purified flue gas. The specific type of chimney 73 can be set according to actual needs and there are no restrictions on it.

[0086] The twelfth and thirteenth switching valves 51 and 53 are used to selectively open the flue gas analysis path. The specific types of the twelfth and thirteenth switching valves 51 and 53 can be set according to actual needs and are not limited thereto. For example, the twelfth and thirteenth switching valves 51 and 53 can be manual switching valves, or they can be electric switching valves controlled by the control system.

[0087] The flue gas analyzer 52 is used to analyze the composition of flue gas. The specific type of the flue gas analyzer 52 can be set according to actual needs and is not limited thereto. For example, the flue gas analyzer 52 can be an integrated detection unit of various component sensors.

[0088] This embodiment also proposes an operation method for a multi-zero carbon fuel pulverized coal burner test platform as described in the embodiments of this disclosure, including: S1: Control the furnace 3 of the test platform to a negative pressure state (control the induced draft fan 72); S2: Start the zero-carbon fuel delivery system 1 and the pulverized coal delivery system 2 of the test platform, so that the zero-carbon fuel delivery system 1 delivers zero-carbon fuel to the pulverized coal burner, and the pulverized coal delivery system 2 delivers air-pulverized coal to the pulverized coal burner, and ignites the pulverized coal burner (ignition by electromagnetic ignition device 8). S3: Control the fuel flow rate of zero-carbon fuel conveying system 1 and the air-coal concentration of pulverized coal conveying system 2; S4: The performance of the pulverized coal burner is judged based on the temperature field changes detected by the temperature detection system 4 and the flue gas composition changes detected by the flue gas detection system 5.

[0089] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0090] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A test platform for a multi-zero carbon fuel pulverized coal burner, characterized in that, include: Furnace, zero-carbon fuel conveying system, pulverized coal conveying system, temperature detection system, flue gas detection system, and control system; The combustion outlet of the pulverized coal burner faces into the furnace. Zero-carbon fuel is introduced into the fuel input end of the zero-carbon fuel delivery system, and the fuel output end of the zero-carbon fuel delivery system is connected to the fuel input end of the pulverized coal burner. Coal is fed into the coal input end of the pulverized coal conveying system, and the air-coal output end of the pulverized coal conveying system is connected to the air-coal input end of the pulverized coal burner. The detection end of the temperature detection system is set inside the furnace and is used to detect changes in the temperature field inside the furnace. The detection end of the flue gas detection system is set at the flue gas output end of the furnace and is used to detect changes in the flue gas composition at the flue gas output end of the furnace. The control system is used to control the fuel flow rate of the zero-carbon fuel delivery system and the air-coal concentration of the pulverized coal delivery system, and to determine the performance of the pulverized coal burner based on the temperature field changes detected by the temperature detection system and the flue gas composition changes detected by the flue gas detection system.

2. The multi-zero carbon fuel pulverized coal burner test platform according to claim 1, characterized in that, The zero-carbon fuel delivery system includes: First switching valve and first regulating valve; The zero-carbon fuel is introduced into the fuel input terminal of the first switching valve, and the fuel input terminal of the first regulating valve is connected to the fuel output terminal of the first switching valve, and the fuel output terminal of the first regulating valve is connected to the fuel input terminal of the pulverized coal burner. The signal output terminal of the control system is connected to the signal input terminal of the first regulating valve. The control system is used to control the first regulating valve to conduct and control the opening degree of the first regulating valve, so as to regulate the fuel flow of the zero-carbon fuel delivery system.

3. The multi-zero carbon fuel pulverized coal burner test platform according to claim 2, characterized in that, The zero-carbon fuel delivery system also includes: The system comprises a second regulating valve, a second switching valve, a third switching valve, a third regulating valve, a fourth switching valve, a fourth regulating valve, a fifth regulating valve, a fifth switching valve, a sixth regulating valve, and a hazardous gas leak detection unit. Nitrogen gas is introduced into the nitrogen input terminal of the second regulating valve, and the nitrogen input terminal of the second switching valve is connected to the nitrogen output terminal of the second regulating valve. The fuel input terminal of the third switching valve is connected to the fuel output terminal of the first regulating valve and the nitrogen output terminal of the second switching valve, respectively. The fuel input terminal of the third regulating valve is connected to the fuel output terminal of the third switching valve. The nitrogen input terminal of the fourth switching valve is connected to the fuel output terminal of the third regulating valve, and the nitrogen input terminal of the fourth regulating valve is connected to the nitrogen output terminal of the fourth switching valve. Nitrogen is discharged from the nitrogen output terminal of the fourth regulating valve. The fuel input terminal of the fifth regulating valve is connected to the fuel output terminal of the third regulating valve, and the fuel input terminal of the fifth switching valve is connected to the fuel output terminal of the fifth regulating valve. The fuel input terminal of the sixth regulating valve is connected to the fuel output terminal of the fifth switching valve, and the fuel output terminal of the sixth regulating valve is connected to the fuel input terminal of the pulverized coal burner. The hazardous gas leak detection unit is used to detect hazardous gas leaks, and the signal input terminal of the control system is connected to the signal output terminal of the hazardous gas leak detection unit. The signal output terminal of the control system is connected to the signal input terminals of the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, the fifth switching valve, and the sixth regulating valve, respectively. The control system is used to control the first regulating valve to close, the second regulating valve to open, the third regulating valve to open, the fourth regulating valve to open, the fifth regulating valve to close, the sixth regulating valve to close, and the fifth switching valve to close when the hazardous gas leakage detection unit detects a hazardous gas leak, and to control the opening degree of the second regulating valve, the third regulating valve, and the fourth regulating valve.

4. The multi-zero carbon fuel pulverized coal burner test platform according to claim 3, characterized in that, The zero-carbon fuel delivery system also includes: First pressure detection unit, second pressure detection unit and third pressure detection unit; The detection end of the first pressure detection unit is located between the fuel input end of the third regulating valve and the fuel output end of the third switching valve. The first pressure detection unit is used to detect the first pressure of the zero-carbon fuel. The detection end of the second pressure detection unit is located between the nitrogen input end of the fourth switching valve and the fuel output end of the third regulating valve, and between the fuel input end of the fifth regulating valve and the fuel output end of the third regulating valve. The second pressure detection unit is used to detect the second pressure of the zero-carbon fuel. The detection end of the third pressure detection unit is located between the fuel input end of the fifth switching valve and the fuel output end of the fifth regulating valve. The third pressure detection unit is used to detect the third pressure of the zero-carbon fuel. The signal input terminal of the control system is connected to the signal output terminal of the first pressure detection unit, the signal output terminal of the second pressure detection unit, and the signal output terminal of the third pressure detection unit, respectively. The control system is configured to control the first regulating valve to shut off, the second regulating valve to shut off, the third regulating valve to open, the fourth regulating valve to open, the fifth regulating valve to shut off, the sixth regulating valve to shut off, and the fifth switching valve to shut off when at least one of the first pressure detected by the first pressure detection unit, the second pressure detected by the second pressure detection unit, and the third pressure detected by the third pressure detection unit exceeds a preset pressure value. It also controls the opening degree of the third regulating valve and the fourth regulating valve. Subsequently, it controls the first regulating valve to shut off, the second regulating valve to open, the third regulating valve to open, the fourth regulating valve to open, the fifth regulating valve to shut off, the sixth regulating valve to shut off, and the fifth switching valve to shut off, and controls the opening degree of the second regulating valve, the third regulating valve, and the fourth regulating valve.

5. The multi-zero carbon fuel pulverized coal burner test platform according to claim 1, characterized in that, The pulverized coal conveying system includes: Pulverized coal silo, primary air fan, seventh regulating valve and air-powder mixer; The coal powder input terminal of the coal powder silo is supplied with coal powder, and the coal powder output terminal of the coal powder silo is connected to the coal powder input terminal of the air-coal mixer. The primary air input terminal of the primary air fan is supplied with air, and the primary air input terminal of the seventh regulating valve is connected to the primary air output terminal of the primary air fan. The primary air output terminal of the seventh regulating valve is connected to the primary air input terminal of the air-coal mixer, and the air-coal output terminal of the air-coal mixer is connected to the air-coal input terminal of the coal powder burner. The signal output terminal of the control system is connected to the signal input terminal of the seventh regulating valve, and the control system is used to control the seventh regulating valve to conduct and control the opening degree of the seventh regulating valve, so as to adjust the air-coal concentration of the pulverized coal conveying system.

6. The multi-zero carbon fuel pulverized coal burner test platform according to claim 5, characterized in that, The pulverized coal conveying system also includes: Coal feeder, downdraft dryer, coal mill, coarse powder separator, fine powder separator, powder feeder and heater; Coal is fed into the coal feeder at its coal input end, and the coal input end of the descending drying pipe is connected to the coal output end of the coal feeder. The coal input end of the coal mill is connected to the coal output end of the descending drying pipe. The coal powder input end of the coarse powder separator is connected to the coal powder output end of the coal mill. The coal powder input end of the fine powder separator is connected to the coal powder output end of the coarse powder separator. The coal powder input end of the coal feeder is connected to the coal powder output end of the fine powder separator. The coal powder output end of the coal feeder is connected to the coal powder input end of the coal powder silo. The heater is disposed between the primary air output end of the primary air fan and the primary air input end of the seventh regulating valve, and the primary air input end of the heater is connected to the primary air output end of the primary air fan. The primary air output end of the heater is connected to the primary air input end of the coal mill and the primary air input end of the seventh regulating valve, respectively.

7. The multi-zero carbon fuel pulverized coal burner test platform according to claim 6, characterized in that, The pulverized coal conveying system further includes: an eighth switching valve, a ninth switching valve, a tenth switching valve, and an eighth regulating valve; wherein, the eighth switching valve is disposed between the primary air input terminal of the heater and the primary air output terminal of the primary air fan, and the primary air input terminal of the eighth switching valve is connected to the primary air output terminal of the primary air fan, and the primary air output terminal of the eighth switching valve is connected to the primary air input terminal of the heater; the ninth switching valve is disposed between the primary air output terminal of the heater and the primary air input terminal of the seventh regulating valve, and the primary air input terminal of the ninth switching valve is connected to the primary air output terminal of the heater, and one of the ninth switching valves... The secondary air output terminal is connected to the primary air input terminal of the seventh regulating valve; the tenth switching valve and the eighth regulating valve are located between the primary air output terminal of the heater and the primary air input terminal of the coal mill, and the primary air input terminal of the tenth switching valve is connected to the primary air output terminal of the heater, the primary air input terminal of the eighth regulating valve is connected to the primary air output terminal of the tenth switching valve, and the primary air output terminal of the eighth regulating valve is connected to the primary air input terminal of the coal mill; the signal output terminal of the control system is connected to the signal input terminals of the ninth switching valve, the tenth switching valve, and the eighth regulating valve, respectively. And / or, The test platform also includes a combustion-supporting system, which includes a combustion-supporting fan and an eleventh switching valve. Air is introduced into the combustion-supporting air input end of the combustion-supporting fan, and the combustion-supporting air input end of the eleventh switching valve is connected to the combustion-supporting air output end of the combustion-supporting fan. The combustion-supporting air output end of the eleventh switching valve is connected to the combustion-supporting air input end of the pulverized coal burner.

8. The multi-zero carbon fuel pulverized coal burner test platform according to claim 1, characterized in that, The temperature detection system includes: Multiple temperature-measuring thermocouples, a horizontal infrared imager, and a vertical infrared imager; The multiple temperature-measuring thermocouples are spaced apart inside the furnace, and the temperature-measuring thermocouples are used to collect the temperature at corresponding positions inside the furnace. The detection end of the horizontal infrared imager faces the furnace and is used to collect infrared images of the furnace in the horizontal direction. The detection end of the vertical infrared imager faces the furnace and is used to collect infrared images of the furnace in the vertical direction. The signal input terminal of the control system is connected to the signal output terminal of the temperature measuring thermocouple, the signal output terminal of the horizontal infrared imager, and the signal output terminal of the vertical infrared imager, respectively. The control system is used to obtain the temperature field change inside the furnace based on the temperature collected by the temperature measuring thermocouple, the infrared image collected by the horizontal infrared imager, and the infrared image collected by the vertical infrared imager.

9. The multi-zero carbon fuel pulverized coal burner test platform according to claim 1, characterized in that, The test platform also includes a flue gas treatment system, which includes a spray tower, an induced draft fan, and a chimney. The flue gas inlet of the spray tower is connected to the flue gas outlet of the furnace, the flue gas inlet of the induced draft fan is connected to the flue gas outlet of the spray tower, the flue gas inlet of the chimney is connected to the flue gas outlet of the induced draft fan, and the flue gas is discharged from the flue gas outlet of the chimney. The flue gas detection system includes: a twelfth switching valve, a flue gas analyzer, and a thirteenth switching valve. The flue gas input end of the twelfth switching valve is connected to the flue gas output end of the furnace. The flue gas input end of the flue gas analyzer is connected to the flue gas output end of the twelfth switching valve. The flue gas analyzer is used to collect the flue gas composition at the flue gas output end of the furnace. The flue gas input end of the thirteenth switching valve is connected to the flue gas output end of the flue gas analyzer. The flue gas output end of the thirteenth switching valve is connected to the flue gas input end of the chimney. The signal input terminal of the control system is connected to the signal output terminal of the flue gas analysis device, and the control system is used to obtain the change in flue gas composition at the flue gas output terminal of the furnace based on the flue gas composition collected by the flue gas analysis device.

10. A method for operating a test platform for a multi-zero carbon fuel pulverized coal burner as described in any one of claims 1-9, characterized in that, include: Control the furnace of the test platform to a negative pressure state; The zero-carbon fuel delivery system and the pulverized coal delivery system of the test platform are started, so that the zero-carbon fuel delivery system delivers zero-carbon fuel to the pulverized coal burner, and the pulverized coal delivery system delivers air-coal powder to the pulverized coal burner and ignites the pulverized coal burner; Control the fuel flow rate of the zero-carbon fuel delivery system and the air-coal concentration of the pulverized coal delivery system; The performance of the pulverized coal burner is determined based on the temperature field changes detected by the temperature detection system and the flue gas composition changes detected by the flue gas detection system.

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