Spraying system and method based on spraying cooling tower

Abstract

The invention provides a spraying system based on a spraying cooling tower, the spraying system comprises a spraying tower, a spraying assembly, a first detection assembly and a second detection assembly, the spraying tower is provided with a flue gas inlet and a flue gas outlet, the spraying tower comprises a plurality of spraying areas, the spraying assembly comprises a spraying pipeline and a control valve, the control valve is arranged on the spraying pipeline, and the first detection assembly and the second detection assembly are arranged on the spraying pipeline. The plurality of spraying assemblies are in one-to-one correspondence with the plurality of spraying areas, the first detection assembly comprises a first gas detection part which is arranged at the flue gas inlet, the second detection assembly comprises a first liquid detection part which is connected with the outlet of the spraying pipeline, and the first liquid detection part is arranged at the outlet of the spraying pipeline. The first detection assembly and the second detection assembly are both electrically connected with the control valve, the first detection assembly and the second detection assembly transmit detected information to the control valve, and the control valve adjusts the opening and closing degree of the control valve according to the detected information. According to the spraying system based on the spraying cooling tower, effective utilization of cold energy and optimization of energy efficiency can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling towers, and in particular to a spray system and method based on a spray cooling tower. Background Art

[0002] With the increasingly stringent environmental protection requirements and the improvement of energy efficiency requirements, the demand for flue gas deep cooling systems in the industrial field is growing. Flue gas deep cooling systems are usually used to cool industrial flue gas to reduce the temperature of flue gas, reduce pollutant emissions, and realize the recovery of heat energy. In this process, the effective use of cold energy and energy efficiency optimization have become key technical issues.

[0003] In the related art, traditional flue gas cooling systems often adopt single-stage cooling or simple multi-stage cooling, and fail to fully consider the impact of different flue gas conditions and refrigerant medium parameters on the efficiency of cold energy utilization, which easily leads to waste of spray liquid and reduces the flue gas purification effect. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a spray system based on a spray cooling tower, which can achieve effective utilization of cold energy and optimization of energy efficiency.

[0006] The spray system based on the spray cooling tower according to an embodiment of the present invention includes:

[0007] A spray tower, wherein the spray tower has a smoke inlet and a smoke outlet, and the spray tower comprises a plurality of spray areas sequentially arranged along a smoke flow direction;

[0008] A spray assembly, wherein the spray assembly comprises a spray pipeline and a control valve, wherein the control valve is arranged on the spray pipeline, and the spray assembly is multiple, and the multiple spray assemblies correspond to the multiple spray areas one by one;

[0009] A first detection component, the first detection component comprises a first gas detection component, the first gas detection component is arranged at the smoke inlet, and is used to detect the smoke temperature and pollutant concentration at the smoke inlet;

[0010] a second detection assembly, the second detection assembly comprising a first liquid detection member, the first liquid detection member being connected to the outlet of the spray pipeline to detect the temperature and flow rate of the spray liquid discharged from the outlet of the spray pipeline,

[0011] The first detection component and the second detection component are both electrically connected to the control valve, so that the first detection component and the second detection component transmit detected information to the control valve, and the control valve adjusts the opening and closing degree of the control valve according to the detected information.

[0012] The design of the spray assembly of the spray system based on the spray cooling tower of the embodiment of the present invention allows for precise control of the flow rate of the spray liquid, thereby optimizing the utilization of cold energy and energy efficiency and reducing the waste of the spray liquid. In addition, by real-time monitoring of the parameters of the flue gas inlet, the first detection assembly helps to adjust the working state of the spray assembly to adapt to the actual conditions of the flue gas, thereby improving the adaptability and reliability of the system. The second detection assembly provides key information on the state of the spray liquid, helping the control valve to adjust the flow rate of the spray liquid according to actual needs, further optimizing the utilization of cold energy and the energy efficiency of the system.

[0013] In some embodiments, the plurality of spray areas are divided into a primary spray area, a secondary spray area, a tertiary spray area and a quaternary spray area arranged in sequence along the direction of smoke flow, and the plurality of spray components are divided into a primary spray component, a secondary spray component, a tertiary spray component and a quaternary spray component. The primary spray component is connected to the primary spray area, the secondary spray component is connected to the secondary spray area, the tertiary spray component is connected to the tertiary spray area, the quaternary spray component is connected to the quaternary spray area, and the spray liquid circulation volume of the secondary spray component is 1.8 to 2.2 times the spray liquid circulation volume of the primary spray component, the spray circulation volume of the tertiary spray component is equal to the spray liquid circulation volume of the secondary spray component, and the spray liquid circulation volume of the quaternary spray component is 1.1 to 1.5 times the spray liquid circulation volume of the primary spray component.

[0014] In some embodiments, the first detection component also includes a second gas detection component, and there are multiple second gas detection components, and the multiple second gas detection components correspond one-to-one to the multiple spray areas. The second gas detection component is arranged on the flue between two adjacent spray areas to detect the flue gas temperature after cooling.

[0015] In some embodiments, the second detection assembly further includes a second liquid detection component, which is connected to the inlet of the spray pipeline to detect the temperature of the spray liquid in the spray pipeline before entering the spray tower and after exiting the spray tower.

[0016] In some embodiments, the spray system based on the spray cooling tower of the embodiment of the present invention further includes a detection chamber, the detection chamber is connected to the flue gas inlet, and the first gas detection element is connected to the detection chamber.

[0017] The spraying method based on the spray cooling tower of the embodiment of the present invention is completed by the spraying system based on the spray cooling tower according to any one of the above embodiments, and comprises the following steps:

[0018] S1, introducing flue gas into the flue gas inlet of the spray tower;

[0019] S2. Using the first detection component to detect the smoke temperature and pollutant concentration at the smoke inlet;

[0020] S3, adjusting the spray liquid circulation volume of the spray assembly according to the detection information;

[0021] S4. Cooling the flue gas using a spray assembly;

[0022] S5, using the second detection component to detect the temperature and flow rate of the spray liquid in the spray pipeline;

[0023] S6, the control valve adjusts the circulation volume of the spray liquid according to the detection information;

[0024] S7. Exhaust the cooled flue gas.

[0025] In some embodiments, in step S3, the following steps are further included:

[0026] The second gas detection component in the first detection component is used to detect the cooled flue gas temperature on the flue between two adjacent spraying areas, and the spray liquid circulation volume of the spray component is adjusted according to the cooled flue gas temperature.

[0027] In some embodiments, in step S6, it further includes:

[0028] Adjust the circulation volume of the spray liquid of the first-stage spray assembly;

[0029] Adjust the spray liquid circulation volume of the secondary spray assembly to 1.8 to 2.2 times that of the primary spray assembly;

[0030] Adjust the spray liquid circulation volume of the three-stage spray assembly so that the spray liquid circulation volume of the three-stage spray assembly is equal to the spray liquid circulation volume of the two-stage spray assembly;

[0031] Adjust the spray liquid circulation volume of the four-stage spray assembly to 1.1 to 1.5 times that of the first-stage spray assembly.

[0032] In some embodiments, step S5 also includes: using a second liquid detection component in a second detection component to detect the temperature of the spray liquid in the spray pipeline before entering the spray tower and after discharging the spray tower, and adjusting the spray liquid circulation volume of the spray component according to the temperature information of the spray liquid.

[0033] In some embodiments, before step S1, a detection chamber is set at the flue gas inlet of the spray tower, and the first gas detection element in the first detection assembly is used to detect the flue gas temperature and pollutant concentration in the detection chamber, and the spray liquid circulation volume of the spray assembly is adjusted according to the detection information in the detection chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a spray system based on a spray cooling tower according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 1. Spray tower, 11. Primary spray area, 12. Secondary spray area, 13. Third spray area, 14. Fourth spray area, 15. Smoke inlet, 16. Smoke outlet,

[0037] 2. Spray assembly, 21. First-level spray assembly, 22. Second-level spray assembly, 23. Third-level spray assembly, 24. Fourth-level spray assembly, 25. Spray pipeline, 26. Control valve,

[0038] 3. First detection component, 31. First gas detection component, 32. Second gas detection component,

[0039] 4. Second detection component, 41. First liquid detection component, 42. Second liquid detection component,

[0040] 5. Detection chamber. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0042] The following describes a spray system based on a spray cooling tower according to an embodiment of the present invention with reference to the accompanying drawings.

[0043] like Figure 1 As shown, the spray system based on the spray cooling tower of the embodiment of the present invention includes: a spray tower 1, a spray component 2, a first detection component 3 and a second detection component 4.

[0044] The spray tower 1 has a flue gas inlet 15 and a flue gas outlet 16. The spray tower 1 includes a plurality of spray areas arranged in sequence along the flue gas flow direction. The spray assembly 2 includes a spray pipeline 25 and a control valve 26. The control valve 26 is arranged on the spray pipeline 25. There are multiple spray assemblies 2, and the multiple spray assemblies 2 correspond to the multiple spray areas one by one. The first detection assembly 3 includes a first gas detection component 31, which is arranged at the flue gas inlet 15 to detect the flue gas temperature and pollutant concentration at the flue gas inlet 15. The second detection assembly 4 includes a first liquid detection component 41, which is connected to the outlet of the spray pipeline 25 to detect the temperature and flow rate of the spray liquid discharged from the outlet of the spray pipeline 25. The first detection assembly 3 and the second detection assembly 4 are both electrically connected to the control valve 26, so that the first detection assembly 3 and the second detection assembly 4 transmit the detected information to the control valve 26, and the control valve 26 adjusts the opening and closing degree of the control valve 26 according to the detection information.

[0045] Specifically, Figure 1 As shown, the flue gas inlet 15 is located at the bottom of the spray tower 1, the flue gas outlet 16 is located at the top of the spray tower 1, and multiple spray areas are arranged in a bottom-up direction, so that the temperature of the flue gas gradually decreases from bottom to top. That is, each spray area is used to cool the flue gas at different stages. The design of the spray tower 1 helps to achieve step-by-step cooling of the flue gas, improves the cooling efficiency and the effect of flue gas purification.

[0046] The spray assembly 2 includes a spray pipeline 25 and a control valve 26. The control valve 26 is provided on the spray pipeline 25 to adjust the flow rate of the spray liquid. The multiple spray assemblies 2 correspond to the multiple spray areas in the spray tower 1 one by one, so that the flow rate of the spray liquid can be accurately controlled by using the multiple spray assemblies 2, thereby optimizing the utilization and energy efficiency of cold energy and reducing the waste of the spray liquid.

[0047] The first gas detection component 31 is provided at the smoke inlet 15, and is used to detect the temperature and pollutant concentration of the smoke. The first gas detection component 31 may be a composite detection device integrating temperature detection and gas concentration detection, so as to be able to detect the temperature and concentration of the smoke in real time. In other words, by real-time monitoring of the parameters of the smoke inlet 15, the first detection component 3 helps to adjust the working state of the spray component 2 to adapt to the actual conditions of the smoke, thereby improving the adaptability and reliability of the system.

[0048] The first liquid detection component 41 is connected to the outlet of the spray pipeline 25 to detect the temperature and flow rate of the spray liquid. The second detection component 4 provides key information on the state of the spray liquid, helping the control valve 26 to adjust the flow rate of the spray liquid according to actual needs, further optimizing the utilization of cold energy and the energy efficiency of the system.

[0049] The control valve 26 is electrically connected to the first detection component 3 and the second detection component 4 so as to receive detection information from the two components and adjust its own opening and closing degree according to the information. The intelligent adjustment capability of the control valve 26 ensures that the system can dynamically adjust the flow rate of the spray liquid according to the parameters monitored in real time, thereby maximizing the utilization of cold energy and optimizing energy efficiency.

[0050] That is to say, the design of the spray assembly 2 of the spray system based on the spray cooling tower of the embodiment of the present invention allows the flow rate of the spray liquid to be accurately controlled, thereby optimizing the utilization of cold energy and energy efficiency and reducing the waste of the spray liquid. And by real-time monitoring the parameters of the flue gas inlet 15, the first detection assembly 3 helps to adjust the working state of the spray assembly 2 to adapt to the actual conditions of the flue gas, thereby improving the adaptability and reliability of the system. The second detection assembly 4 provides key information on the state of the spray liquid, helping the control valve 26 to adjust the flow rate of the spray liquid according to actual needs, further optimizing the utilization of cold energy and the energy efficiency of the system.

[0051] In some embodiments, multiple spray areas are divided into a primary spray area 11, a secondary spray area 12, a tertiary spray area 13 and a quaternary spray area 14 arranged in sequence along the flue gas flow direction, and multiple spray components 2 are divided into a primary spray component 21, a secondary spray component 22, a tertiary spray component 23 and a quaternary spray component 24. The primary spray component 21 is connected to the primary spray area 11, the secondary spray component 22 is connected to the secondary spray area 12, the tertiary spray component 23 is connected to the tertiary spray area 13, and the quaternary spray component 24 is connected to the quaternary spray area 14. The spray liquid circulation amount of the secondary spray component 22 is 1.8 to 2.2 times the spray liquid circulation amount of the primary spray component 21, the spray circulation amount of the tertiary spray component 23 is equal to the spray liquid circulation amount of the secondary spray component 22, and the spray liquid circulation amount of the quaternary spray component 24 is 1.1 to 1.5 times the spray liquid circulation amount of the primary spray component 21.

[0052] It is understandable that the primary spray area 11 and the primary spray assembly 21 are located at the first level (the bottom of the spray tower 1) in the direction of flue gas flow, and are used to preliminarily cool the flue gas. The primary spray assembly 21 is connected to the primary spray area 11 and is responsible for spraying an appropriate amount of spray liquid to the area. The primary spray assembly 21 can use normal temperature process water as the spray liquid for spraying operations.

[0053] The secondary spray area 12 and the secondary spray assembly 22 are located downstream of the primary spray area 11 to further cool the flue gas. The spray liquid circulation volume of the secondary spray assembly 22 is 1.8 to 2.2 times that of the primary spray assembly 21, so that the secondary spray assembly 22 sprays more spray liquid to the secondary spray area 12 than the primary spray assembly 21 to provide more adequate cooling. Among them, the secondary spray assembly 22 can use process water cooled by air cooling or water cooling as the spray liquid for spraying operation.

[0054] The tertiary spray area 13 and the tertiary spray assembly 23 are located downstream of the secondary spray area 12, and are used to deeply cool the flue gas. The spray circulation volume of the tertiary spray assembly 23 is equal to the spray liquid circulation volume of the secondary spray assembly 22, which helps to maintain the continuity and stability of the cooling process. Among them, the spray liquid of the tertiary spray assembly 23 can be cooled by a medium-temperature refrigerator.

[0055] The four-stage spray area 14 and the four-stage spray assembly 24 are located downstream of the three-stage spray area 13, and are used to finally cool the flue gas. The circulation volume of the spray liquid of the four-stage spray assembly 24 is 1.1 to 1.5 times that of the first-stage spray assembly 21, so that the four-stage spray assembly 24 can adjust the flow rate of the spray liquid as needed to adapt to the actual cooling demand of the flue gas. Among them, the spray liquid of the four-stage spray assembly 24 can be cooled by a low-temperature refrigerator, and the spray liquid used by the four-stage spray assembly 24 is a solution with a freezing point below 0 degrees Celsius, such as a 20% concentration of calcium chloride solution.

[0056] That is to say, the spray components 2 at different levels adjust the flow rate of the spray liquid according to the actual cooling demand of the flue gas, which reduces the waste of the spray liquid and improves the use efficiency of the spray liquid. Through the hierarchical arrangement, the system can more effectively use the spray liquid to cool the flue gas step by step, thereby improving the overall cooling effect. In addition, the hierarchical arrangement design enables the system to adapt to different flue gas conditions and cooling requirements, thereby improving the flexibility and adaptability of the system. By accurately controlling the flow rate of the spray liquid, the system can reduce the energy consumption of pumping the spray liquid, thereby reducing the operating cost of the entire system.

[0057] In some embodiments, the first detection component 3 also includes a second gas detection component 32, there are multiple second gas detection components 32, and the multiple second gas detection components 32 correspond one-to-one to the multiple spray areas. The second gas detection component 32 is arranged on the flue between two adjacent spray areas to detect the flue gas temperature after cooling.

[0058] It is understandable that the second gas detection element 32 is arranged on the flue between two adjacent spraying areas, that is, each second gas detection element 32 is located between two spraying areas, and the cooling effect of the flue gas after passing through a spraying area can be monitored in real time. There are multiple second gas detection elements 32, and they correspond to multiple spraying areas one by one. So that each spraying area has an exclusive second gas detection element 32 to monitor the cooling effect of the area on the flue gas.

[0059] That is to say, the main function of the second gas detection element 32 is to detect the flue gas temperature after cooling. By monitoring the change of flue gas temperature, the system can determine the cooling effect of each spray area and adjust the working state of the spray assembly 2 accordingly. The data provided by the second gas detection element 32 helps to optimize the distribution of the spray liquid, improve the cooling efficiency, and reduce unnecessary use of the spray liquid. By monitoring the flue gas temperature after each spray area, the system can accurately control the spray liquid flow of each spray assembly 2 to ensure that each area can achieve the best cooling effect.

[0060] In some embodiments, the second detection component 4 also includes a second liquid detection component 42, which is connected to the inlet of the spray pipeline 25 to detect the temperature of the spray liquid in the spray pipeline 25 before entering the spray tower 1 and after exiting the spray tower 1.

[0061] It is understandable that the second liquid detection member 42 and the first liquid detection member 41 are respectively connected to the inlet and outlet of the spray pipeline 25 to detect the temperature of the spray liquid before entering the spray tower 1 and after exiting the spray tower 1. Optionally, the second liquid detection member 42 uses a temperature sensor to monitor the temperature change of the spray liquid in the spray pipeline 25 in real time. When the temperature of the spray liquid exceeds the set threshold, the system will automatically start an alarm or take measures to reduce the temperature. In addition, the second liquid detection member 42 uses an infrared thermometer, which can quickly and non-contactly detect the temperature of the spray liquid to reduce interference with the spray liquid and improve detection accuracy.

[0062] Of course, the first liquid detection element 41 and the second liquid detection element 42 can also be connected to the control system in the spray tower 1 to achieve automatic temperature adjustment. When the spray liquid temperature is detected to be abnormal, the control system will automatically adjust the spray liquid flow rate or spray time in the spray tower 1 to keep the temperature within a reasonable range.

[0063] In some embodiments, the spray system based on the spray cooling tower of the embodiment of the present invention further includes a detection chamber 5 , the detection chamber 5 is connected to the flue gas inlet 15 , and the first gas detection element 31 is connected to the detection chamber 5 .

[0064] It is understandable that the detection chamber 5 is connected to the smoke inlet 15, and the first gas detection element 31 is connected to the detection chamber 5. This enables the system to effectively detect harmful substances in the smoke. The function of the detection chamber 5 is to collect smoke samples and analyze them through the first gas detection element 31. In addition, in the detection chamber 5, preliminary adjustments can be made based on the detection results. For example, when the smoke temperature exceeds the preset temperature entering the spray tower 1, adjustments can be made in advance to ensure the subsequent spraying effect.

[0065] The following describes a spraying method based on a spray cooling tower according to an embodiment of the present invention with reference to the accompanying drawings.

[0066] like Figure 1 As shown, the spraying method based on the spray cooling tower of the embodiment of the present invention is completed by the spraying system based on the spray cooling tower according to any one of the above embodiments, and includes the following steps:

[0067] S1. Introduce the flue gas into the flue gas inlet 15 of the spray tower 1. Introduce the flue gas into the inlet of the spray tower 1 through the flue to ensure that the flow path of the flue gas is smooth. Prepare for the subsequent spray cooling and ensure that the flue gas can fully contact the spray liquid.

[0068] S2. Use the first detection component 3 to detect the flue gas temperature and pollutant concentration at the flue gas inlet 15. The first detection component 3 may include a temperature sensor and a pollutant concentration sensor, that is, the sensor for detection is installed at the flue gas inlet 15 to monitor the temperature and pollutant concentration of the flue gas in real time, so as to accurately obtain the initial state information of the flue gas, and provide a basis for subsequent cooling and purification.

[0069] S3. Adjust the circulation volume of the spray liquid of the spray assembly 2 according to the detection information. According to the detected flue gas temperature and pollutant concentration, the control system automatically adjusts the working state of the spray pump to adjust the circulation volume of the spray liquid. Thus, the amount of spray liquid is dynamically adjusted according to the flue gas conditions, the cold energy utilization efficiency is improved, and the waste of spray liquid is reduced.

[0070] S4. Cool the flue gas using the spray assembly 2. The spray liquid is evenly sprayed in the flue gas flow through the spray assembly 2, so that the flue gas and the spray liquid are fully in contact and heat exchange is performed to reduce the temperature of the flue gas, improve the heat recovery efficiency, and reduce pollutant emissions.

[0071] S5. Use the second detection component 4 to detect the temperature and flow rate of the spray liquid in the spray pipeline 25. The second detection component 4 includes a temperature and flow rate sensor, that is, a temperature and flow rate sensor is installed in the spray pipeline 25 to monitor the temperature and flow rate of the spray liquid in real time. Ensure that the temperature and flow rate of the spray liquid are within an appropriate range to optimize the cooling effect and the use of the spray liquid.

[0072] S6. The control valve 26 adjusts the circulation volume of the spray liquid according to the detection information. The control system receives the signal of the second detection component 4 and automatically adjusts the opening of the control valve 26 to adjust the circulation volume of the spray liquid. The circulation volume of the spray liquid is dynamically adjusted according to the actual operation situation to further reduce the waste of the spray liquid and improve the energy efficiency of the system.

[0073] S7. Exhaust the cooled flue gas. After cooling and purification, the cooled flue gas is discharged through a chimney or other emission facilities, achieving environmentally friendly flue gas discharge, reducing pollutant emissions, and improving the recovery and utilization efficiency of heat energy.

[0074] In some embodiments, step S3 also includes the following steps: using the second gas detection component 32 in the first detection component 3 to detect the cooled flue gas temperature on the flue between two adjacent spraying areas, and adjusting the spray liquid circulation amount of the spray component 2 according to the cooled flue gas temperature.

[0075] It is understandable that a temperature detector is installed on the flue between two adjacent spraying areas in the spray tower 1. The detector can be a thermocouple or an infrared temperature sensor, etc., to monitor the temperature of the flue gas after spray cooling in the previous area in real time. In other words, the second gas detection element 32 can obtain the temperature of the flue gas after one or more spray cooling in real time, providing a basis for adjusting the circulation amount of the spray liquid in the next step, and ensuring that the flue gas can gradually reach a predetermined low temperature when passing through multiple spraying areas.

[0076] The temperature data of the flue gas after cooling collected by the second gas detection element 32 is transmitted to the control system. The control system adjusts the flow rate of the spray liquid by controlling the speed of the spray pump or adjusting the opening of the control valve 26 according to the set temperature threshold and the actual detected temperature data, thereby realizing accurate control of the circulation amount of the spray liquid. That is, through real-time monitoring and adjustment, the circulation amount of the spray liquid can be dynamically adjusted according to the actual cooling effect of the flue gas, further optimizing the cooling efficiency, avoiding overcooling or insufficient cooling, and improving the energy efficiency and environmental protection effect of the system.

[0077] In some embodiments, step S6 also includes: adjusting the spray liquid circulation volume of the first-level spray assembly 21; adjusting the spray liquid circulation volume of the second-level spray assembly 22 to 1.8 to 2.2 times that of the first-level spray assembly 21; adjusting the spray liquid circulation volume of the tertiary spray assembly 23 to make the spray liquid circulation of the tertiary spray assembly 23 equal to the spray liquid circulation volume of the second-level spray assembly 22; adjusting the spray liquid circulation volume of the fourth-level spray assembly 24 to 1.1 to 1.5 times that of the first-level spray assembly 21.

[0078] It is understandable that, according to the detection information of the second detection component 4 and the needs of the system, the spray liquid circulation volume of the first-level spray component 21 is adjusted by controlling the first-level spray pump or the corresponding control valve 26 to ensure that the first-level spray area 11 can provide an appropriate amount of spray liquid for preliminary cooling. By finely adjusting the spray liquid circulation volume of the first-level spray component 21, the flue gas can be effectively cooled preliminarily, laying the foundation for subsequent spray cooling.

[0079] On the basis of the adjustment of the primary spray assembly 21, according to the actual cooling effect, the secondary spray pump or the corresponding control valve 26 is adjusted through the control system, so that the spray liquid circulation volume of the secondary spray assembly 22 is 1.8 to 2.2 times that of the primary spray assembly 21. Since the secondary spray assembly 22 may face partially cooled flue gas, more spray liquid is needed to provide additional cooling capacity. This proportional adjustment helps to achieve a more uniform and in-depth cooling effect.

[0080] Similarly, according to the cooling requirements of the system and the operating status of the first two spray assemblies 2, the control system adjusts the third-stage spray pump or the corresponding control valve 26 so that the spray liquid circulation volume of the third-stage spray assembly 23 is consistent with that of the second-stage spray assembly 22. This adjustment helps to maintain the cooling efficiency in the subsequent cooling process and ensure that the flue gas can be sufficiently cooled when passing through each spray area.

[0081] On the basis of the adjustment of the third-stage spray assembly 23, the spray liquid circulation volume of the fourth-stage spray assembly 24 is further adjusted according to the cooling demand to be within the range of 1.1 to 1.5 times the circulation volume of the first-stage spray assembly 21. The fourth-stage spray assembly 24 may face flue gas close to the emission requirements, so it needs to be fine-tuned according to the actual situation to achieve the ultimate cooling and purification goals.

[0082] In some embodiments, step S5 also includes: using the second liquid detection component 42 in the second detection component 4 to detect the temperature of the spray liquid in the spray pipeline 25 before entering the spray tower 1 and after discharging the spray tower 1, and adjusting the circulation amount of the spray liquid of the spray component 2 according to the temperature information of the spray liquid.

[0083] It is understandable that a second liquid detection member 42 (i.e., a temperature sensor) is installed on the pipeline before the spray liquid enters the spray tower 1 and after it is discharged from the spray tower 1. The second liquid detection member 42 can be a contact or non-contact temperature detection device. The second detection member will monitor the temperature of the spray liquid in real time and transmit the data to the control system. By monitoring the inlet and outlet temperatures of the spray liquid, the cooling effect and heat exchange efficiency of the spray liquid can be evaluated, providing a basis for adjusting the circulation volume and temperature of the spray liquid.

[0084] The control system will dynamically adjust the working state of the spray pump or the opening of the control valve 26 according to the spray liquid temperature information provided by the second liquid detection element 42 and the preset temperature control strategy to increase or decrease the circulation volume of the spray liquid. This ensures that the temperature of the spray liquid is kept within the optimal working range during the entire spraying process, avoiding overcooling or overheating, thereby optimizing the heat exchange efficiency and improving the overall performance and energy efficiency of the system.

[0085] That is to say, if the temperature of the spray liquid entering the tower is too high, it may be necessary to reduce the circulation volume or increase the cooling capacity to avoid overheating the flue gas; if the temperature of the spray liquid leaving the tower is too low, it indicates that the heat exchange efficiency is high, and it may be necessary to increase the circulation volume or reduce the cooling capacity to avoid overcooling the flue gas; if the temperature difference between the spray liquid entering the tower and leaving the tower is small, it may indicate that the circulation volume or cooling capacity of the spray liquid is insufficient and needs to be adjusted to enhance the cooling effect.

[0086] In some embodiments, before step S1, a detection chamber 5 is set at the flue gas inlet 15 of the spray tower 1, and the first gas detection element 31 in the first detection component 3 is used to detect the flue gas temperature and pollutant concentration in the detection chamber 5, and the circulation amount of the spray liquid of the spray component 2 is adjusted according to the detection information in the detection chamber 5.

[0087] It is understood that a detection chamber 5 is arranged at the smoke inlet 15 of the spray tower 1, which can accommodate a certain amount of smoke and allow the installation of a gas detection element. The first gas detection element 31 can be a combined type, including a temperature sensor and a plurality of pollutant concentration sensors (such as nitrogen oxides, sulfides, particulate matter, etc.). The design of the detection chamber 5 ensures that the smoke can be fully mixed and representatively sampled before entering the spray tower 1.

[0088] That is to say, the detection chamber 5 provides a controlled and standardized environment to ensure that the detected flue gas parameters can represent the actual state of the entire flue gas, providing an accurate basis for the subsequent adjustment of the spray liquid circulation volume. In addition, the flue gas temperature and pollutant concentration data collected by the first gas detection element 31 are transmitted to the control system. The control system will calculate the required spray liquid circulation volume based on these data, combined with the preset spray strategy and environmental standards, and adjust the actual spray liquid circulation volume by controlling the spray pump or regulating valve.

[0089] In other words, by early detection at the inlet of the spray tower 1, the system can perform optimization adjustments before the flue gas enters the spray tower 1, thereby more accurately controlling the spraying process, improving the efficiency of cooling and purification, thereby reducing over-treatment or under-treatment of the flue gas, optimizing resource utilization, and reducing operating costs.

[0090] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0091] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0092] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0093] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0094] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0095] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A spray system based on a spray cooling tower, characterized in that: include: A spray tower, wherein the spray tower has a smoke inlet and a smoke outlet, and the spray tower comprises a plurality of spray areas sequentially arranged along a smoke flow direction; A spray assembly, wherein the spray assembly comprises a spray pipeline and a control valve, wherein the control valve is arranged on the spray pipeline, and the spray assembly is multiple, and the multiple spray assemblies correspond to the multiple spray areas one by one; A first detection component, the first detection component comprises a first gas detection component, the first gas detection component is arranged at the smoke inlet, and is used to detect the smoke temperature and pollutant concentration at the smoke inlet; a second detection assembly, the second detection assembly comprising a first liquid detection member, the first liquid detection member being connected to the outlet of the spray pipeline to detect the temperature and flow rate of the spray liquid discharged from the outlet of the spray pipeline, The first detection component and the second detection component are both electrically connected to the control valve, so that the first detection component and the second detection component transmit detected information to the control valve, and the control valve adjusts the opening and closing degree of the control valve according to the detected information.

2. The spray system based on the spray cooling tower according to claim 1, characterized in that: The multiple spray areas are divided into a primary spray area, a secondary spray area, a tertiary spray area and a quaternary spray area arranged in sequence along the direction of smoke flow, and the multiple spray components are divided into a primary spray component, a secondary spray component, a tertiary spray component and a quaternary spray component. The primary spray component is connected to the primary spray area, the secondary spray component is connected to the secondary spray area, the tertiary spray component is connected to the tertiary spray area, and the quaternary spray component is connected to the quaternary spray area, and the spray liquid circulation amount of the secondary spray component is 1.8 to 2.2 times the spray liquid circulation amount of the primary spray component, the spray circulation amount of the tertiary spray component is equal to the spray liquid circulation amount of the secondary spray component, and the spray liquid circulation amount of the quaternary spray component is 1.1 to 1.5 times the spray liquid circulation amount of the primary spray component.

3. The spray system based on the spray cooling tower according to claim 2 is characterized in that: The first detection component also includes a second gas detection component, which is multiple and corresponds one to one with the multiple spray areas. The second gas detection component is arranged on the flue between two adjacent spray areas to detect the flue gas temperature after cooling.

4. The spray system based on the spray cooling tower according to claim 3 is characterized in that: The second detection assembly also includes a second liquid detection member, which is connected to the inlet of the spray pipeline to detect the temperature of the spray liquid in the spray pipeline before entering the spray tower and after exiting the spray tower.

5. The spray system based on the spray cooling tower according to claim 4, characterized in that: It also includes a detection chamber, which is connected to the smoke inlet, and the first gas detection component is connected to the detection chamber.

6. A spraying method based on a spray cooling tower, wherein the spraying method based on a spray cooling tower of the present invention is completed by a spraying system based on a spray cooling tower according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, introducing flue gas into the flue gas inlet of the spray tower; S2. Using the first detection component to detect the smoke temperature and pollutant concentration at the smoke inlet; S3, adjusting the spray liquid circulation volume of the spray assembly according to the detection information; S4. Cooling the flue gas using a spray assembly; S5, using the second detection component to detect the temperature and flow rate of the spray liquid in the spray pipeline; S6, the control valve adjusts the circulation volume of the spray liquid according to the detection information; S7. Exhaust the cooled flue gas.

7. The spraying method based on a spray cooling tower according to claim 6, characterized in that: In step S3, the following steps are also included: The second gas detection component in the first detection component is used to detect the cooled flue gas temperature on the flue between two adjacent spraying areas, and the circulation amount of the spray liquid of the spray component is adjusted according to the cooled flue gas temperature.

8. The spraying method based on the spray cooling tower according to claim 7, characterized in that: In step S6, it also includes: Adjust the circulation volume of the spray liquid of the first-stage spray assembly; Adjust the spray liquid circulation volume of the secondary spray assembly to 1.8 to 2.2 times that of the primary spray assembly; Adjust the spray liquid circulation volume of the three-stage spray assembly so that the spray liquid circulation volume of the three-stage spray assembly is equal to the spray liquid circulation volume of the two-stage spray assembly; Adjust the spray liquid circulation volume of the four-stage spray assembly to 1.1 to 1.5 times that of the first-stage spray assembly.

9. The spraying method based on a spray cooling tower according to claim 8, characterized in that: In step S5, it also includes: using the second liquid detection component in the second detection component to detect the temperature of the spray liquid in the spray pipeline before entering the spray tower and after exiting the spray tower, and adjusting the spray liquid circulation volume of the spray component according to the temperature information of the spray liquid.

10. The spraying method based on a spray cooling tower according to claim 9, characterized in that: Before step S1, a detection chamber is set at the flue gas inlet of the spray tower, and the first gas detection element in the first detection assembly is used to detect the flue gas temperature and pollutant concentration in the detection chamber, and the spray liquid circulation volume of the spray assembly is adjusted according to the detection information in the detection chamber.

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