Refrigerating machine, refrigerating unit and flue gas cooling system

Abstract

The invention provides a refrigerating machine, a refrigerating unit and a flue gas cooling system.The refrigerating machine comprises a compressor, a separation assembly, a condenser, an evaporator and an economizer, the separation assembly comprises a first oil separator and a second oil separator which are connected, and an air inlet of the first oil separator is connected with an exhaust port of the compressor; an oil return outlet of the second oil separator is connected with an air suction port of the compressor, the condenser is connected with the separation assembly and located on the downstream of the separation assembly, the evaporator is connected with the compressor, the economizer comprises a first cavity and a second cavity, and an inlet of the first cavity is connected with a refrigerant outlet of the condenser. An outlet of the first cavity is connected with a refrigerant inlet of the evaporator, an inlet of the second cavity is connected with an outlet of the first cavity, and an outlet of the second cavity is connected with a refrigerant inlet of the compressor. According to the refrigerating machine, the oil leakage phenomenon can be effectively reduced, the operation efficiency and reliability are improved, and the stability and adaptability of a system under variable working conditions can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a refrigerator, a refrigeration unit and a flue gas cooling system. Background Art

[0002] During the operation of the refrigerator, there is a phenomenon of "oil leakage", which means that the lubricating oil in the compressor is discharged together with the refrigerant gas, and cannot return to the compressor through the normal oil return mechanism, causing the compressor to run without oil. The oil leakage phenomenon has a serious impact on the operating efficiency and reliability of the refrigerator. Oil leakage will cause insufficient oil supply to the compressor, which will in turn affect the lubrication and cooling effect of the compressor. Insufficient oil supply will increase the wear of compressor parts and shorten their service life. When the oil leakage is serious, the oil level in the oil separator will drop rapidly. When the oil level is lower than a certain value, the oil level alarm device will be triggered, causing the refrigerator to shut down. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a refrigerator, which can not only effectively reduce oil leakage and improve operating efficiency and reliability, but also ensure the stability and adaptability of the system under variable working conditions.

[0005] A refrigerator according to an embodiment of the present invention comprises:

[0006] compressor;

[0007] A separation assembly, the separation assembly comprising a first oil separator and a second oil separator connected to each other, the air inlet of the first oil separator being connected to the exhaust port of the compressor, and the oil return outlet of the second oil separator being connected to the air intake port of the compressor;

[0008] a condenser connected to the separation assembly and located downstream of the separation assembly;

[0009] an evaporator, the evaporator being connected to the compressor;

[0010] An economizer, the economizer includes a first chamber and a second chamber, the inlet of the first chamber is connected to the refrigerant outlet of the condenser, the outlet of the first chamber is connected to the refrigerant inlet of the evaporator, the inlet of the second chamber is connected to the outlet of the first chamber, and the outlet of the second chamber is connected to the refrigerant inlet of the compressor.

[0011] The refrigerator of the embodiment of the present invention adds an external second oil separator on the basis of the first oil separator, so as to ensure that the lubricating oil can return to the compressor, thereby avoiding oil level drop and oil level alarm. In addition, by reducing oil leakage, the lubrication and cooling effects of the compressor are guaranteed, thereby improving the operating efficiency and life of the compressor.

[0012] In some embodiments, the second oil separator includes a separation chamber, a plurality of oil filter elements are arranged in the separation chamber, and the plurality of oil filter elements are arranged at intervals in the circumferential direction along the center line of the second oil separator.

[0013] In some embodiments, there are two separation chambers, and the two separation chambers are arranged opposite to each other on both sides of the air inlet chamber of the second oil separator along the extension direction of the second oil separator.

[0014] In some embodiments, the refrigerator of the embodiment of the present invention also includes an oil baffle plate, which is connected to the second oil separator and is located in the separation chamber. In the extension direction orthogonal to the second oil separator, the oil baffle plate is located between two adjacent oil filter elements.

[0015] In some embodiments, in the direction from the air inlet cavity of the second oil separator to the separation cavity, an end of the oil baffle plate adjacent to the air inlet cavity of the second oil separator is lower than an end of the oil baffle plate away from the air inlet cavity of the second oil separator.

[0016] In some embodiments, the refrigerator of the embodiment of the present invention further includes an air baffle, which is connected to the second oil separator and is located in the separation chamber, and the air baffle is arranged adjacent to the exhaust port of the second oil separator.

[0017] In some embodiments, the evaporator has an oil return port, and a distance from the oil return port to the bottom of the evaporator is smaller than a distance from the oil return port to the top of the evaporator.

[0018] In some embodiments, there are multiple oil return ports, which are arranged at intervals along the extension direction of the evaporator, and in the extension direction of the evaporator, the distances from the multiple oil return ports to the bottom of the evaporator decrease.

[0019] The refrigeration unit of an embodiment of the present invention includes: the refrigerant group includes multiple refrigerators, the refrigerator is a refrigerator according to any one of the above embodiments, between two adjacent refrigerators, the bottom of the first oil separator of one refrigerator is connected to the bottom of the first oil separator of another refrigerator through a pipeline, and a control valve is provided on the pipeline.

[0020] The flue gas cooling system of the embodiment of the present invention comprises:

[0021] A spray cooling tower, wherein the spray cooling tower has a smoke inlet and a smoke outlet, and the spray cooling tower has a plurality of spray zones arranged in sequence and at intervals along the direction of smoke flow;

[0022] A plurality of spray assemblies, each of the plurality of spray assemblies corresponds to the plurality of spray areas one by one, and the spray assemblies are used to spray a spray solution into the spray areas to cool the flue gas that flows through the plurality of spray areas in sequence to room temperature or below room temperature;

[0023] A refrigeration component, wherein the refrigeration component comprises a plurality of refrigeration units, wherein the refrigeration unit is the refrigeration unit according to the above embodiment, and the refrigeration component is connected to at least one of the plurality of spraying components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of a refrigerator according to an embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the internal structure of a second oil separator of a refrigerator from a first perspective according to an embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the internal structure of a second oil separator of a refrigerator from a first perspective according to an embodiment of the present invention.

[0027] Figure 4 It is a schematic structural diagram of an evaporator of a refrigerator according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] 1. Compressor,

[0030] 2. Separation assembly, 21. First oil separator, 22. Second oil separator, 23. Oil filter element, 24. Oil baffle, 25. Air baffle, 26. Air inlet cavity,

[0031] 3. Condenser,

[0032] 4. Evaporator, 41. Oil return port,

[0033] 5. Economizer, 51. First chamber, 52. Second chamber,

[0034] 6. Dry filter,

[0035] 7. Electronic expansion valve,

[0036] 8. Solenoid valve,

[0037] 9. Thermal expansion valve. DETAILED DESCRIPTION

[0038] 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.

[0039] The refrigerator according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0040] like Figure 1-Figure 4 As shown, the refrigerator according to the embodiment of the present invention comprises: a compressor 1 , a separation component 2 , a condenser 3 , an evaporator 4 and an economizer 5 .

[0041] The separation assembly 2 includes a first oil separator 21 and a second oil separator 22 connected to each other, the air inlet of the first oil separator 21 is connected to the exhaust port of the compressor 1, and the oil return outlet of the second oil separator 22 is connected to the air intake port of the compressor 1. The condenser 3 is connected to the separation assembly 2 and is located downstream of the separation assembly 2. The evaporator 4 is connected to the compressor 1. The economizer 5 includes a first chamber 51 and a second chamber 52, the inlet of the first chamber 51 is connected to the refrigerant outlet of the condenser 3, the outlet of the first chamber 51 is connected to the refrigerant inlet of the evaporator 4, the inlet of the second chamber 52 is connected to the outlet of the first chamber 51, and the outlet of the second chamber 52 is connected to the refrigerant inlet of the compressor 1.

[0042] Specifically, Figure 1 As shown, the compressor 1 is the core of the refrigeration cycle, which compresses the refrigerant gas and increases its temperature and pressure. The exhaust port of the compressor 1 is connected to the air inlet of the first oil separator 21 in the separation component 2, so that the compressed refrigerant gas is sent to the separation component 2 for oil separation.

[0043] The separation assembly 2 includes a first oil separator 21 and a second oil separator 22, which are connected to work to separate the lubricating oil in the refrigerant gas. The air inlet of the first oil separator 21 is connected to the exhaust port of the compressor 1, and is used to receive the compressed refrigerant gas. After the first oil separator 21 separates the lubricating oil, the refrigerant gas flows into the second oil separator 22. The oil return outlet of the second oil separator 22 is connected to the air intake port of the compressor 1, ensuring that the separated lubricating oil can return to the compressor 1, thereby reducing the oil leakage phenomenon.

[0044] The condenser 3 is located downstream of the separation assembly 2 and connected to the separation assembly 2. The condenser 3 receives the refrigerant gas from the separation assembly 2 and condenses it into liquid while releasing heat.

[0045] The evaporator 4 is connected to the compressor 1. The refrigerant in the evaporator 4 absorbs heat and evaporates, and the evaporated refrigerant is passed into the compressor 1, thereby reducing the temperature of the surrounding environment and achieving a refrigeration effect. The economizer 5 includes a first chamber 51 and a second chamber 52. The inlet of the first chamber 51 is connected to the refrigerant outlet of the condenser 3 to receive the condensed refrigerant. The outlet of the first chamber 51 is connected to the refrigerant inlet of the evaporator 4 to send the refrigerant into the evaporator 4. The inlet of the second chamber 52 is connected to the outlet of the first chamber 51 to pass the refrigerant gas discharged from the economizer 5 into the second chamber 52 again, and preheat the refrigerant in the first chamber 51 in the economizer 5. The outlet of the second chamber 52 is connected to the refrigerant inlet of the compressor 1 to send the refrigerant gas back to the compressor 1. In other words, the economizer 5 can increase the amount of heat absorbed by the refrigerant in the evaporator 4, thereby increasing the cooling capacity of the refrigeration system.

[0046] It should be noted that if Figure 1 As shown, the condenser 3 and the economizer 5 can be connected by a pipeline, and a drying filter 6 is arranged on the pipeline to dry the refrigerant discharged from the condenser 3. The economizer 5 and the evaporator 4 can be connected by a pipeline, and an electronic expansion valve 7 is arranged on the pipeline, so that the flow rate of the refrigerant can be accurately controlled by the electronic expansion valve 7 according to the change of the load of the evaporator 4, ensuring that the flow rate of the refrigerant in the evaporator 4 matches the thermal load, thereby improving the refrigeration efficiency. The inlet of the second chamber 52 and the outlet of the first chamber 51 can be connected by a pipeline, and the electromagnetic valve 8 and the thermal expansion valve 9 are sequentially arranged on the pipeline along the direction of the refrigerant flow. The combined use of the electromagnetic valve 8 and the thermal expansion valve 9 can realize sequential control, that is, under certain conditions, the electromagnetic valve 8 first controls the flow, and then the thermal expansion valve 9 adjusts the flow. Through the coordinated work of the electromagnetic valve 8 and the thermal expansion valve 9, the flow rate and pressure of the refrigerant can be more accurately controlled to adapt to different working conditions and load requirements.

[0047] Therefore, the refrigerator of the embodiment of the present invention adds an external second oil separator 22 on the basis of the first oil separator 21, ensuring that the lubricating oil can return to the compressor 1, avoiding the oil level drop and the oil level alarm. In addition, by reducing oil leakage, the lubrication and cooling effects of the compressor 1 are guaranteed, thereby improving the operating efficiency and life of the compressor 1.

[0048] In some embodiments, the second oil separator 22 includes a separation chamber, in which a plurality of oil filter elements 23 are arranged. The plurality of oil filter elements 23 are arranged at intervals in the circumferential direction along the center line of the second oil separator 22 .

[0049] It is understandable that if Figure 1-Figure 3As shown, the arrangement of multiple oil filter elements 23 in the separation chamber can increase the contact area between the oil and the refrigerant, thereby improving the separation efficiency and ensuring that the lubricating oil can be separated from the refrigerant more effectively. In other words, the oil filter elements 23 are arranged at intervals along the circumference of the center line of the second oil separator 22, which helps to achieve a uniform distribution of the refrigerant in the separation chamber, thereby achieving a more uniform separation effect. In addition, the design of multiple oil filter elements 23 helps to reduce the load of a single filter element, avoid filter element blockage caused by oil stains or impurities accumulation, and reduce the pressure drop during system operation.

[0050] Alternatively, if Figure 1-Figure 3 As shown, there are three oil filter elements 23 , which are evenly spaced apart in the circumferential direction of the center line of the second oil separator 22 , and one of the three oil filter elements 23 is arranged adjacent to the top of the second oil separator 22 .

[0051] Preferably, there are two separation chambers, which are arranged relatively on both sides of the air inlet chamber 26 of the second oil separator 22 along the extension direction of the second oil separator 22. In other words, the design of the two separation chambers can increase the separation area, thereby improving the separation efficiency of the lubricating oil. When the refrigerant gas passes through the separation chamber, the contact area between the lubricating oil and the refrigerant increases, which helps to better separate the oil mist. The two separation chambers arranged relatively help the refrigerant gas to be evenly distributed inside the separator, reduce the airflow dead zone and local vortex, and improve the separation effect.

[0052] In some embodiments, the refrigerator of the embodiment of the present invention also includes an oil baffle 24, which is connected to the second oil separator 22 and is located in the separation chamber. In the extension direction orthogonal to the second oil separator 22, the oil baffle 24 is located between two adjacent oil filter elements 23.

[0053] Specifically, Figure 1-Figure 3 As shown, the oil baffle 24 includes a first baffle and a second baffle connected to each other, and the longitudinal sections of the first baffle and the second baffle are cone-shaped, so that the oil droplets separated by the upper oil filter element 23 can flow along the oil baffle 24 to the bottom of the second oil separator 22.

[0054] That is, the function of the oil baffle 24 is to block and guide the oil mist in the refrigerant gas so that it can be more easily captured by the oil filter element 23, thereby enhancing the oil separation efficiency.

[0055] Preferably, if Figure 1-Figure 3 As shown, in the direction from the air inlet chamber 26 of the second oil separator 22 to the separation chamber, one end of the oil baffle plate 24 adjacent to the air inlet chamber 26 of the second oil separator 22 is lower than the other end of the oil baffle plate 24 away from the air inlet chamber 26 of the second oil separator 22 .

[0056] In some embodiments, the refrigerator of the embodiment of the present invention further includes an air baffle 25 , which is connected to the second oil separator 22 and is located in the separation chamber. The air baffle 25 is arranged adjacent to the exhaust port of the second oil separator 22 .

[0057] It is understandable that if Figure 1-Figure 3 As shown, since the oil filter 23 is close to the exhaust port of the second oil separator 22, it is easy for the oil droplets just separated by the oil filter 23 to be discharged into and out along with the exhaust airflow before they have time to drip to the bottom of the second oil separator 22. Therefore, an air baffle 25 is added to the exhaust port of the second oil separator 22 to effectively prevent oil leakage caused by this reason.

[0058] In some embodiments, the evaporator 4 has an oil return port 41 , and a distance from the oil return port 41 to the bottom of the evaporator 4 is smaller than a distance from the oil return port 41 to the top of the evaporator 4 .

[0059] It is understandable that if Figure 1 and Figure 4 As shown, the evaporator 4 has an oil return port 41 for returning the lubricating oil in the refrigerant to the compressor 1 or the oil separator. The position of the oil return port 41 is designed so that the distance from the bottom of the evaporator 4 is smaller than the distance from the top of the evaporator 4. In order to increase the probability of oil return by lowering the height of the oil collection point, the oil return capacity of the system is enhanced.

[0060] Preferably, there are multiple oil return ports 41, which are arranged at intervals along the extension direction of the evaporator 4, and the distances between the multiple oil return ports 41 and the bottom of the evaporator 4 decrease in the extension direction of the evaporator 4. In other words, the interval arrangement of the multiple oil return ports 41 helps to achieve more uniform oil return, ensuring that the lubricating oil in the entire evaporator 4 can be effectively recovered. The design of the multiple oil return ports 41 can adapt to different operating conditions, ensuring that the oil can be effectively managed under variable working conditions.

[0061] The following describes a refrigeration unit according to an embodiment of the present invention.

[0062] The refrigeration unit of the embodiment of the present invention includes: the refrigerant group includes multiple refrigerators, the refrigerator is a refrigerator according to any one of the above embodiments, between two adjacent refrigerators, the bottom of the first oil separator 21 of one refrigerator is connected to the bottom of the first oil separator 21 of another refrigerator through a pipeline, and a control valve is provided on the pipeline.

[0063] It is understandable that when two refrigerators are operated in parallel, the return oil volume will be unbalanced. The drain pipes under the oil separators of the two refrigerators are used to achieve oil level balance of the two oil separators. A control valve is installed on the connected drain pipes so that the oil level can be evenly distributed by adjusting the control valve.

[0064] The following describes a flue gas cooling system according to an embodiment of the present invention.

[0065] The flue gas cooling system of the embodiment of the present invention comprises: a spray cooling tower, a refrigeration component and a plurality of spray components.

[0066] The spray cooling tower has a smoke inlet and a smoke outlet, and has a plurality of spray areas arranged in sequence along the flow direction of the smoke. The plurality of spray assemblies correspond to the plurality of spray areas one by one, and the spray assemblies are used to spray spray solutions into the spray areas to cool the smoke flowing through the plurality of spray areas in sequence to room temperature or below room temperature. The refrigeration assembly includes a plurality of refrigeration units, which are refrigeration units according to the above-mentioned embodiments, and the refrigeration assembly is connected to at least one of the plurality of spray assemblies.

[0067] It is understandable that the spray cooling tower is the core component of the system for cooling the flue gas. The spray cooling tower has a smoke inlet and a smoke outlet for guiding the in and out of the flue gas. A plurality of spray zones are arranged in the spray cooling tower in sequence along the direction of the flue gas flow to achieve a gradual cooling of the flue gas.

[0068] The refrigeration component includes multiple refrigeration units. The function of the refrigeration component is to provide cooling capacity for the spray system to ensure that the spray solution can effectively cool the flue gas in the spray area.

[0069] The plurality of spray assemblies correspond to the plurality of spray zones in the spray cooling tower. The spray assemblies are used to spray a spray solution into the spray zone, and the solution may be water or other cooling medium. The spraying of the spray solution helps to cool the flue gas to room temperature or below.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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 refrigerator, characterized in that: include: compressor; A separation assembly, the separation assembly comprising a first oil separator and a second oil separator connected to each other, the air inlet of the first oil separator being connected to the exhaust port of the compressor, and the oil return outlet of the second oil separator being connected to the air intake port of the compressor; a condenser connected to the separation assembly and located downstream of the separation assembly; an evaporator, the evaporator being connected to the compressor; An economizer, the economizer includes a first chamber and a second chamber, the inlet of the first chamber is connected to the refrigerant outlet of the condenser, the outlet of the first chamber is connected to the refrigerant inlet of the evaporator, the inlet of the second chamber is connected to the outlet of the first chamber, and the outlet of the second chamber is connected to the refrigerant inlet of the compressor.

2. The refrigerator according to claim 1, characterized in that The second oil separator comprises a separation chamber, in which a plurality of oil filter elements are arranged, and the plurality of oil filter elements are arranged at intervals in the circumferential direction along the center line of the second oil separator.

3. The refrigerator according to claim 2, characterized in that: There are two separation chambers, which are arranged opposite to each other on both sides of the air inlet chamber of the second oil separator along the extension direction of the second oil separator.

4. The refrigerator according to claim 3, characterized in that: It also includes an oil baffle plate, which is connected to the second oil separator and is located in the separation chamber. In the extension direction orthogonal to the second oil separator, the oil baffle plate is located between two adjacent oil filter elements.

5. The refrigerator according to claim 4, characterized in that: In the direction from the air inlet cavity of the second oil separator to the separation cavity, one end of the oil baffle plate adjacent to the air inlet cavity of the second oil separator is lower than one end of the oil baffle plate away from the air inlet cavity of the second oil separator.

6. The refrigerator according to claim 5, characterized in that It also includes an air baffle, which is connected to the second oil separator and is located in the separation chamber. The air baffle is arranged adjacent to the exhaust port of the second oil separator.

7. The refrigerator according to any one of claims 1 to 6, characterized in that: The evaporator has an oil return port, and a distance from the oil return port to the bottom of the evaporator is smaller than a distance from the oil return port to the top of the evaporator.

8. The refrigerator according to claim 7, characterized in that There are multiple oil return ports, which are arranged at intervals along the extension direction of the evaporator, and the distances from the multiple oil return ports to the bottom of the evaporator decrease in the extension direction of the evaporator.

9. A refrigeration unit, characterized in that: include: The refrigerant group includes a plurality of refrigerators, each of which is a refrigerator according to any one of claims 1 to 8, and between two adjacent refrigerators, the bottom of a first oil separator of one refrigerator is connected to the bottom of a first oil separator of another refrigerator via a pipeline, and a control valve is provided on the pipeline.

10. A flue gas cooling system, characterized in that: include: A spray cooling tower, wherein the spray cooling tower has a smoke inlet and a smoke outlet, and the spray cooling tower has a plurality of spray zones arranged in sequence and at intervals along the direction of smoke flow; A plurality of spray assemblies, each of the plurality of spray assemblies corresponds to the plurality of spray areas one by one, and the spray assemblies are used to spray a spray solution into the spray areas to cool the flue gas that flows through the plurality of spray areas in sequence to room temperature or below room temperature; A refrigeration component, the refrigeration component includes a plurality of refrigeration units, the refrigeration unit is the refrigeration unit according to claim 9, and the refrigeration component is connected to at least one of the plurality of spraying components.

Images