Spray cooling tower

Abstract

This invention relates to the field of low-temperature flue gas purification technology and discloses a spray cooling tower. The spray cooling tower includes a tower body with a flue gas inlet and a flue gas outlet. Flue gas entering the tower body through the inlet is cooled to a sub-zero temperature range and discharged from the tower body through the outlet. The tower wall includes a corrosion-resistant layer, a leak-proof layer, a structural layer, and an anti-aging layer arranged radially from the inside to the outside. The leak-proof layer is vertically oriented on its outer side. The thickness of the structural layer decreases from bottom to top. The materials of the corrosion-resistant layer, leak-proof layer, structural layer, and anti-aging layer all include reinforcing materials and anti-corrosion resin. By adding a leak-proof layer, when cracks appear in the corrosion-resistant layer, the leak-proof layer isolates the flue gas from direct contact with the structural layer and prevents further propagation of cracks in the corrosion-resistant layer. The tower body has a variable wall thickness design to reduce its volumetric mass.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas low-temperature purification, and in particular to a spray cooling tower. BACKGROUND

[0002] The flue gas discharged by a coal-fired power plant is clean flue gas after pollutants are removed and meets the prescribed emission standard. The pollutants in the flue gas include two categories: main pollutants and other pollutants. The main pollutants include dust, SO2 and NOx, and the other pollutants include SO3, HCl, HF, Hg and VOCS, etc.

[0003] Currently, a flue gas multi-pollutant integrated removal system removes pollutants in an integrated manner by using the dissolution and adsorption characteristics of the pollutant components in the flue gas at low temperatures to achieve the purpose of near-zero emission. The spray tower in the flue gas multi-pollutant integrated removal system usually adopts a metal spray tower, but the metal spray tower has the problems of inconvenient transportation and installation, and is easily corroded by acid gases, which requires additional corrosion protection treatment.

[0004] In the related art, a glass steel is used to manufacture the tower body of the spray tower to solve the problems of inconvenient transportation and installation, but in the long-term use process, the inner corrosion-resistant layer and the outer structural layer of the glass steel are prone to cracks, which causes the spray tower to have gas or liquid leakage problems, affecting the safety of production. SUMMARY

[0005] The present application is made based on the discovery and understanding of the inventors of the following facts and problems:

[0006] In the related art, the inner wall (the inner corrosion-resistant layer of the glass steel) of the spray tower is long-term impacted and corroded by high-temperature flue gas, which causes the inner corrosion-resistant layer to have cracks, and as time goes by, the cracks gradually increase, causing the flue gas to corrode the outer wall (the outer structural layer of the glass steel) of the spray tower.

[0007] In addition, the outer wall of the spray tower is also prone to cracks under the influence of environmental factors (such as wind and sunlight), which causes the environmental factors to damage the inner corrosion-resistant layer.

[0008] Therefore, it is necessary to regularly stop the production of the spray tower for maintenance, which not only consumes labor, but also affects the production schedule and costs.

[0009] The present application aims to at least solve one of the technical problems in the related art to some extent. To this end, the present application provides a spray cooling tower which solves the problem of gas or liquid leakage of the tower wall, thereby improving the safety of production.

[0010] The spray cooling tower of the present application comprises a tower body, which is provided with a flue gas inlet and a flue gas outlet, flue gas entering the tower body through the flue gas inlet is cooled to a subzero temperature zone and is discharged from the tower body through the flue gas outlet, the tower wall of the tower body comprises, in sequence from inside to outside along the radial direction of the tower body, a corrosion-resistant layer, a leakage-preventing layer, a structural layer and an anti-aging layer, the leakage-preventing layer is used to separate the corrosion-resistant layer and the structural layer and prevent cracks in the corrosion-resistant layer from further extending, the thickness of the structural layer decreases along the direction from bottom to top, and the materials of the corrosion-resistant layer, the leakage-preventing layer, the structural layer and the anti-aging layer all comprise reinforcing materials and corrosion-resistant resin.

[0011] The spray cooling tower of the present application, by additionally arranging the leakage-preventing layer between the corrosion-resistant layer and the structural layer, even if cracks occur in the corrosion-resistant layer, the leakage-preventing layer can isolate the direct contact of the flue gas and the structural layer, thereby avoiding that, as soon as cracks occur in the corrosion-resistant layer, the flue gas causes corrosion to the structural layer, and further prolonging the period of equipment downtime maintenance, compared with the related art, the influence of the spray cooling tower of the present application on the production schedule is lower.

[0012] In addition, when cracks occur in the corrosion-resistant layer, the leakage-preventing layer not only plays an isolating role, but also plays a role of preventing the cracks in the corrosion-resistant layer from further extending. Similarly, when cracks occur in the structural layer, the leakage-preventing layer also isolates the adverse effects of external factors on the corrosion-resistant layer.

[0013] In addition, the main role of the structural layer is to bear various stresses and external loads, the thickness of the structural layer of the tower wall of the spray cooling tower of the present application decreases from bottom to top, since the load of the structural layer close to the bottom part is larger than that of the structural layer close to the top part, the thickness of the structural layer close to the bottom part is larger than that of the structural layer close to the top part, compared with the same way of decreasing the thickness of the structural layer from bottom to top, thereby reducing the volume and mass of the tower body, and further improving the convenience of transportation and installation of the tower body.

[0014] Optionally, the resin content of the leakage-preventing layer is greater than or equal to 80%; and / or, the resin content of the structural layer is 35% to 40%.

[0015] In the related art, the resin content of the corrosion-resistant layer is greater than 90%, if the leakage-preventing layer is not arranged, the resin content of the structural layer needs to be 45% to 55% to achieve that even if cracks occur in the corrosion-resistant layer, the structural layer will not be corroded and penetrated by the flue gas in a short time. The spray cooling tower of the present application, by arranging the leakage-preventing layer with a resin content greater than or equal to 80%, thereby reducing the resin content of the structural layer to 35% to 40%, and further reducing the manufacturing cost of the structural layer and improving the economic benefit.

[0016] Optionally, the thickness of the corrosion-resistant layer is the same along the direction from bottom to top.

[0017] The spray cooling tower of the present application, the thickness of the corrosion-resistant layer is the same along the direction from bottom to top, that is, the inner diameter of the tower body remains consistent from bottom to top, compared with the structure that the inner diameter of the tower gradually decreases from bottom to top, the tower inner part needs to be produced and processed into different sizes to adapt to the inner diameter of the tower, while the size of the tower inner part used in the spray cooling tower of the present application can be the same, thereby improving the convenience of processing and production of the tower inner part.

[0018] Optionally, the thickness ratio between the corrosion-resistant layer, the anti-leakage layer, the structural layer and the anti-aging layer is 2:10:(70-160):1.

[0019] The spray cooling tower of the present application, the resin content of the anti-aging layer is the highest, reaching about 95%, which mainly serves to protect the structural layer from external (ultraviolet) erosion and prevent aging, and the thickness ratio of the anti-aging layer is the lowest. The resin content of the corrosion-resistant layer is the second, more than 90%, which has excellent resistance and serves as the inner wall of the tower body, and the thickness ratio of the anti-aging layer is slightly larger. The resin content of the anti-leakage layer is greater than or equal to 80%, which not only has corrosion resistance, but also mainly serves to protect the corrosion-resistant layer and prevent crack propagation on the corrosion-resistant layer, and the thickness ratio is greater than that of the corrosion-resistant layer. The structural layer mainly serves to bear various stresses and external loads, and has the largest thickness ratio, which is much larger than the thickness of the other three layers.

[0020] Optionally, the structural layer includes a plurality of structural parts, the plurality of structural parts include a first structural part, a second structural part and a third structural part in sequence from bottom to top, the thickness of the first structural part ranges from 60mm to 80mm, the height of the first structural part accounts for 18% to 20% of the total height of the tower body, the thickness of the second structural part ranges from 40mm to 60mm, the height of the second structural part accounts for 48% to 50% of the total height of the tower body, the thickness of the third structural part ranges from 35mm to 40mm, and the height of the second structural part accounts for 30% to 34% of the total height of the tower body.

[0021] Optionally, the thickness of the first structural part, the thickness of the second structural part and the thickness of the third structural part gradually decrease along the direction from bottom to top.

[0022] The spray cooling tower of the present application, the tower body wall thickness is designed to be variable, gradually thinning from bottom to top, and smoothly transitioning, which not only ensures the aesthetics, but also reduces the stress concentration at the thickness change.

[0023] Optionally, the tower body includes a plurality of segments connected in sequence from bottom to top, and the heights of the segments of the tower body are the same.

[0024] The spray cooling tower of the present application is divided into several sections according to the height of the tower body for convenient on-site installation. For example, a tower body with a height of 40 m is divided into four sections, i.e. each section is 10 m in height.

[0025] Optionally, any section of the tower body comprises one or two of the structural parts.

[0026] Optionally, the connection between each section of the tower body is provided with an inner reinforcing member and an outer reinforcing member, the inner reinforcing member and the outer reinforcing member extend along the height direction of the tower body, the ratio between the height of the outer reinforcing member and the height of the tower body is 0.02-0.03, the ratio between the height of the inner reinforcing member and the height of the tower body is 0.01-0.02, the ratio between the thickness of the outer reinforcing member and the wall thickness of the tower body is 0.45-1, and the ratio between the thickness of the inner reinforcing member and the wall thickness of the tower body is 0.25-0.65.

[0027] The spray cooling tower of the present application is provided with an inner reinforcing member and an outer reinforcing member at the connection between each section to ensure the stability of the connection between the sections.

[0028] Optionally, the corrosion-resistant resin of the corrosion-resistant layer, the corrosion-resistant resin of the anti-leakage layer and the corrosion-resistant resin of the anti-aging layer are all lining resins, the corrosion-resistant resin of the structural layer comprises a first structural layer resin and a second structural layer resin, the first structural layer resin is used for the structural layer of the lower half of the tower wall of the tower body, and the second structural layer resin is used for the structural layer of the upper half of the tower wall of the tower body; and / or, the reinforcing material of the corrosion-resistant layer and the reinforcing material of the anti-aging layer both comprise a carbon fiber surface mat, the reinforcing material of the corrosion-resistant layer further comprises an organic fiber surface mat, the reinforcing material of the anti-leakage layer comprises a sprayed yarn, and the reinforcing material of the structural layer comprises an alkali-free and untwisted glass fiber wound yarn and an alkali-free and untwisted glass fiber unidirectional cloth.

[0029] The spray cooling tower of the present application is provided with an inner reinforcing member and an outer reinforcing member at the connection between each section to ensure the stability of the connection between the sections. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the spray cooling tower of the embodiment of the present application.

[0031] Figure 2 is a partial schematic view of a tower wall of a spray cooling tower according to an embodiment of the present application.

[0032] Figure 3 is a partial schematic view of a tower body joint of a spray cooling tower according to an embodiment of the present application.

[0033] Reference signs:

[0034] tower body 1, flue gas inlet 101, flue gas outlet 102,

[0035] corrosion-resistant layer 11, anti-leakage layer 12, structural layer 13, anti-aging layer 14, inner reinforcing member 15, outer reinforcing member 16. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0037] A spray cooling tower according to an embodiment of the present application is described below in conjunction with the drawings.

[0038] As shown in Figure 1 , a spray cooling tower according to an embodiment of the present application includes a tower body 1, which is provided with a flue gas inlet 101 and a flue gas outlet 102. Flue gas entering the tower body 1 through the flue gas inlet 101 is cooled to subzero temperature zone and discharged from the tower body 1 through the flue gas outlet 102.

[0039] It can be understood that the tower body 1 is provided with a plurality of spray cooling mechanisms (not shown in the drawings), which spray cooling liquid to cool and lower the temperature of flue gas passing through the tower body 1. Moreover, the spray cooling mechanisms are vertically spaced apart and distributed in the tower body 1 to cool and lower the temperature of flue gas in stages. For example, the plurality of spray cooling mechanisms include a first-stage spray cooling mechanism, a second-stage spray cooling mechanism, a third-stage spray cooling mechanism, and a fourth-stage spray cooling mechanism, which are sequentially distributed from bottom to top, so as to sequentially lower the temperature of flue gas at 80℃-100℃ to 50℃-60℃, 20℃-30℃, 2℃-5℃, and -20℃- -15℃.

[0040] Among them, the flue gas is cooled to -20℃- -15℃ to facilitate subsequent flue gas adsorption purification process. In the low-temperature environment of the subzero temperature zone, the nitrogen oxides in the flue gas undergo low-temperature oxidation adsorption on the surface of the adsorbent such as activated carbon, and the nitrogen monoxide gas which is difficult to adsorb is oxidized into nitrogen dioxide gas which is easy to adsorb, so that the adsorption capacity increases by hundreds of times. In addition, the adsorption capacity of components such as sulfur dioxide, carbon dioxide, and heavy metals is also multiplied in the low-temperature environment.

[0041] As shown in Figure 2As shown, the tower wall of the tower body 1 comprises a corrosion-resistant layer 11, a leakage-proof layer 12, a structural layer 13 and an anti-aging layer 14, and the corrosion-resistant layer 11, the leakage-proof layer 12, the structural layer 13 and the anti-aging layer 14 are sequentially arranged from inside to outside along the radial direction of the tower body 1. The materials of the corrosion-resistant layer 11, the leakage-proof layer 12, the structural layer 13 and the anti-aging layer 14 all comprise reinforcing materials and corrosion-resistant resins to achieve the expected performance.

[0042] The corrosion-resistant layer 11 can resist the cooling liquid sprayed by the spray cooling mechanism of the embodiment of the present application, as well as the SO2, NO x X and other flue gas corrosion environments, the leakage-proof layer 12 is used to separate the corrosion-resistant layer 11 and the structural layer 13 and prevent the cracks in the corrosion-resistant layer 11 from further extending, the structural layer 13 is used to bear various stresses and external loads (for example, the load bearing of the tower internals), and the anti-aging layer 14 is used to protect the structural layer 13 from external erosion (ultraviolet rays) and prevent aging.

[0043] Therefore, the spray cooling tower of the embodiment of the present application, by additionally arranging the leakage-proof layer 12 between the corrosion-resistant layer 11 and the structural layer 13, even if the corrosion-resistant layer 11 has cracks, the flue gas and the structural layer 13 can be isolated by the leakage-proof layer 12, thereby avoiding that the flue gas corrodes the structural layer 13 as soon as the corrosion-resistant layer 11 has cracks, and further prolonging the period of equipment downtime maintenance. Compared with the related art, the spray cooling tower of the embodiment of the present application has a lower impact on the production schedule.

[0044] In addition, when the corrosion-resistant layer 11 has cracks, the leakage-proof layer 12 not only plays an isolation role, but also plays a role in preventing the cracks on the corrosion-resistant layer 11 from further extending. Similarly, when the structural layer 13 has cracks, the leakage-proof layer 12 also isolates the corrosion-resistant layer 11 from the adverse effects of external factors.

[0045] Further, the outer side of the leakage-proof layer 12 is arranged in the vertical direction, and the thickness of the structural layer 13 decreases in the direction from bottom to top. It should be understood that, since the structural layer 13 near the bottom part bears a larger load than the structural layer 13 near the top part, the thickness of the structural layer 13 near the bottom part is greater than the thickness of the structural layer 13 near the top part, compared with the same thickness of the structural layer 13 from bottom to top, thereby reducing the volume quality of the tower body 1, and further improving the convenience of transportation and installation of the tower body 1.

[0046] In some embodiments, the resin content of the corrosion-resistant layer 11 is greater than or equal to 90%, the resin content of the leakage-proof layer 12 is greater than or equal to 80%, the resin content of the structural layer 13 is 35% to 40%, and the resin content of the anti-aging layer 14 is 90% to 95%.

[0047] It can be understood that in the related art, the resin content of the corrosion-resistant layer 11 is greater than 90%, and if the anti-leakage layer 12 is not provided, the resin content of the structural layer 13 needs to be 45% to 55% to achieve that even if the corrosion-resistant layer 11 has cracks, the structural layer 13 will not be corroded and penetrated by the flue gas in a short time.

[0048] Therefore, the spray cooling tower of the embodiment of the present application sets the anti-leakage layer 12 with a resin content greater than or equal to 80%, so that the resin content of the structural layer 13 is reduced to 35% to 40%, thereby reducing the manufacturing cost of the structural layer 13 and improving the economic benefit.

[0049] Optionally, the corrosion-resistant resin of the corrosion-resistant layer 11, the corrosion-resistant resin of the anti-leakage layer 12, and the corrosion-resistant resin of the anti-aging layer 14 are all lining resins (DOW470 phenolic epoxy vinyl ester resins), which can provide good mechanical properties at high temperatures. The resins have very high resistance to solvents and chemicals, can maintain product strength and toughness at high temperatures, and have excellent resistance to acidic and oxidative conditions.

[0050] The corrosion-resistant resin of the structural layer 13 includes a first structural layer 13 resin (SW907 resin) and a second structural layer 13 resin (SW901 resin), and the structural layer 13 of the lower half of the tower wall of the tower body 1 adopts the first structural layer 13 resin, and the structural layer 13 of the upper half of the tower wall of the tower body 1 adopts the second structural layer 13 resin.

[0051] It can be understood that since the flue gas is relatively high in temperature (80°C to 100°C) when it first enters the tower body 1, and then gradually decreases in temperature (below room temperature) as it flows upward, and the load-bearing capacity of the structural layer 13 of the lower half of the tower body 1 is greater than that of the upper half of the tower body 1. Therefore, the first structural layer 13 resin with a high heat distortion temperature and hardness is used for the structural layer 13 of the lower half of the tower body 1 to meet the requirements of high-temperature flue gas resistance and high load, and the second structural layer 13 resin with good toughness and shrinkage is used for the structural layer 13 of the upper half of the tower body 1 to meet the requirements of high deformation (thermal expansion and cold contraction).

[0052] The reinforcing materials of the corrosion-resistant layer 11 and the anti-aging layer 14 both include carbon fiber surface felt, the reinforcing material of the corrosion-resistant layer 11 further includes organic fiber surface felt, the reinforcing material of the anti-leakage layer 12 includes sprayed yarn, and the reinforcing material of the structural layer 13 includes alkali-free and untwisted glass fiber wound yarn and alkali-free and untwisted glass fiber unidirectional cloth.

[0053] Further, the material of the anti-aging layer 14 further includes an ultraviolet absorber, and the content of the ultraviolet absorber of the anti-aging layer 14 is 0.5% to 1%.

[0054] In some embodiments, as Figure 1 and Figure 2As shown, the inner side of the leakage prevention layer 12 is vertically arranged, and the thickness of the corrosion resistant layer 11 is the same in the direction from bottom to top.

[0055] Therefore, in the spray cooling tower of the embodiment of the present application, the thickness of the corrosion resistant layer 11 is the same in the direction from bottom to top, that is, the inner diameter of the tower body 1 remains consistent from bottom to top. Compared with the structure in which the inner diameter of the tower gradually decreases from bottom to top, the inner parts of the tower need to be produced and processed into different sizes to adapt to the inner diameter of the tower. In the spray cooling tower of the embodiment of the present application, the sizes of the inner parts of the tower can be the same, thereby improving the convenience of processing and producing the inner parts of the tower.

[0056] In some embodiments, the thickness ratio between the corrosion resistant layer 11, the leakage prevention layer 12, the structural layer 13 and the anti-aging layer 14 is 2:10:(70-160):1.

[0057] It should be understood that the resin content of the anti-aging layer 14 is the highest, reaching about 95%, and its main function is to protect the structural layer 13 from external (ultraviolet) erosion and aging. The thickness ratio of the anti-aging layer 14 is the lowest. The resin content of the corrosion resistant layer 11 is the second, being more than 90%, and it has excellent resistance to serve as the inner wall of the tower body 1, and the thickness ratio of the corrosion resistant layer 11 is slightly larger than that of the anti-aging layer 14. The resin content of the leakage prevention layer 12 is greater than or equal to 80%, and its function is not only corrosion resistance, but also mainly to protect the corrosion resistant layer 11 and prevent the crack propagation on the corrosion resistant layer 11, and the thickness ratio of the leakage prevention layer 12 is greater than that of the corrosion resistant layer 11. The structural layer 13 mainly bears various stresses and external loads, and the thickness ratio of the structural layer 13 is the largest and much greater than that of the other three layers.

[0058] For example, if the thickness of the leakage prevention layer 12 is 5 mm, the thickness of the corrosion resistant layer 11 is 1 mm, the thickness of the anti-aging layer 14 is 0.5 mm, and the thickness of the structural layer 13 is 35 mm-80 mm. That is, the thickness of the structural layer 13 at the bottom of the tower body 1 is 80 mm, and the thickness of the structural layer 13 at the top of the tower body 1 is 35 mm.

[0059] In some embodiments, the structural layer 13 includes a plurality of structural parts, the plurality of structural parts sequentially include a first structural part, a second structural part and a third structural part in the direction from bottom to top, the thickness of the first structural part ranges from 60 mm to 80 mm, the height of the first structural part accounts for 18%-20% of the total height of the tower body 1, the thickness of the second structural part ranges from 40 mm to 60 mm, the height of the second structural part accounts for 48%-50% of the total height of the tower body 1, the thickness of the third structural part ranges from 35 mm to 40 mm, and the height of the second structural part accounts for 30%-34% of the total height of the tower body 1.

[0060] It can be understood that, if the tower body 1 is 40m high, the height of the first structural part is 7.2m-8m, the height of the second structural part is 19.2m-20m, and the height of the third structural part is 12m-13.6m. That is, the first structural part uses SW907 resin, part of the second structural part uses SW907 resin, and the other part uses SW901 resin, and the third structural part uses SW901 resin.

[0061] Further, the thickness of the first structural part, the thickness of the second structural part, and the thickness of the third structural part gradually decrease along the direction from bottom to top. In other words, the thickness of the bottom end of the first structural part is 80mm, the thickness of the top end of the first structural part is 60mm, the thickness of the bottom end of the second structural part is 60mm, the thickness of the top end of the second structural part is 40mm, the thickness of the bottom end of the third structural part is 40mm, and the thickness of the top end of the third structural part is 35mm.

[0062] Therefore, the spray cooling tower of the embodiment of the present application has a variable thickness design of the tower body 1, and the thickness gradually decreases from bottom to top, which smoothly transitions and reduces stress concentration at the thickness change while ensuring aesthetics.

[0063] In some embodiments, as shown in Figure 1 The tower body 1 comprises multiple segments connected in sequence from bottom to top, and the heights of the segments of the tower body 1 are the same.

[0064] The spray cooling tower of the embodiment of the present application is assembled by dividing the tower body 1 into multiple segments according to the height of the tower body 1. For example, the tower body 1 with a height of 40m is divided into four segments, i.e., each segment is 10m in height.

[0065] Alternatively, any segment of the tower body 1 contains one or two structural parts. For example, the tower body 1 is divided into a first segment, a second segment, a third segment, and a fourth segment, the first segment contains a first structural part and a second structural part, the second segment contains the second structural part, the third segment contains the second structural part and a third structural part, and the fourth segment contains the third structural part.

[0066] In some embodiments, as shown in Figure 3 The connection between the segments of the tower body 1 is provided with an inner reinforcing member 15 and an outer reinforcing member 16. The inner reinforcing member 15 and the outer reinforcing member 16 are composed of DOW470 resin, chopped strand mat, and glass cloth. The inner reinforcing member 15 and the outer reinforcing member 16 extend along the height direction of the tower body 1.

[0067] Therefore, the spray cooling tower of the embodiment of the present application is provided with an inner reinforcing member 15 and an outer reinforcing member 16 at the connection between the segments to ensure the stability of the connection between the segments.

[0068] Optionally, the ratio between the height of the outer reinforcing member 16 and the height of the tower body 1 is 0.02-0.03, the ratio between the height of the inner reinforcing member 15 and the height of the tower body 1 is 0.01-0.02, the ratio between the thickness of the outer reinforcing member 16 and the wall thickness of the tower body 1 is 0.45-1, and the ratio between the thickness of the inner reinforcing member 15 and the wall thickness of the tower body 1 is 0.25-0.65.

[0069] For example, if the height of the tower body 1 is 40 m, the height of the outer reinforcing member 16 is 800 mm, 900 mm, 1000 mm, 1100 mm or 1200 mm, and the height of the inner reinforcing member 15 is 400 mm, 500 mm, 600 mm, 700 mm or 800 mm. If the wall thickness of the tower body 1 is 41.5 mm-86.5 mm, the thickness of the outer reinforcing member 16 is 39 mm, 40 mm or 41 mm, and the thickness of the inner reinforcing member 15 is 24 mm, 25 mm or 26 mm.

[0070] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0071] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0072] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0073] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be 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 "under", "below" and "underneath" a second feature can be 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 application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. Exemplary representations of the above terms in the specification are not necessarily directed to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, different embodiments or examples described in the specification and features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0075] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary, and are not to be construed as limiting the present application, and any changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. A spray cooling tower, characterized in that, The system includes a tower body with a flue gas inlet and a flue gas outlet. Flue gas entering the tower body through the flue gas inlet is cooled to a sub-zero temperature range and discharged from the tower body through the flue gas outlet. The tower wall of the tower body includes a corrosion-resistant layer, a leak-proof layer, a structural layer, and an anti-aging layer arranged sequentially from the inside to the outside along the radial direction of the tower body. The leak-proof layer is used to separate the corrosion-resistant layer and the structural layer and to prevent cracks in the corrosion-resistant layer from further extending. The thickness of the structural layer decreases from bottom to top. The materials of the corrosion-resistant layer, the leak-proof layer, the structural layer, and the anti-aging layer all include reinforcing materials and anti-corrosion resin. The structural layer includes multiple structural parts, which are sequentially arranged from bottom to top as a first structural part, a second structural part, and a third structural part. The thickness of the first structural part ranges from 60mm to 80mm, and the height of the first structural part accounts for 18% to 20% of the total height of the tower. The thickness of the second structural part ranges from 40mm to 60mm, and the height of the second structural part accounts for 48% to 50% of the total height of the tower. The thickness of the third structural part ranges from 35mm to 40mm, and the height of the second structural part accounts for 30% to 34% of the total height of the tower.

2. The spray cooling tower according to claim 1, characterized in that, The resin content of the anti-seepage layer is greater than or equal to 80%; and / or, The resin content of the structural layer is 35% to 40%.

3. The spray cooling tower according to claim 1, characterized in that, The thickness of the corrosion-resistant layer is the same from bottom to top.

4. The spray cooling tower according to claim 3, characterized in that, The thickness ratio of the corrosion-resistant layer, the leak-proof layer, the structural layer, and the anti-aging layer is 2:10:70 to 160:

1.

5. The spray cooling tower according to claim 1, characterized in that, The thickness of the first structural part, the thickness of the second structural part, and the thickness of the third structural part all gradually decrease from bottom to top.

6. The spray cooling tower according to claim 1, characterized in that, The anti-corrosion resin of the corrosion-resistant layer, the anti-leakage layer, and the anti-aging layer are all lining resins. The anti-corrosion resin of the structural layer includes a first structural layer resin and a second structural layer resin. The structural layer of the lower half of the tower wall of the tower body uses the first structural layer resin, and the structural layer of the upper half of the tower wall of the tower body uses the second structural layer resin; and / or, The reinforcing materials of the corrosion-resistant layer and the anti-aging layer both include carbon fiber surface felt. The reinforcing material of the corrosion-resistant layer also includes organic fiber surface felt. The reinforcing material of the leak-proof layer includes sprayed yarn. The reinforcing material of the structural layer includes alkali-free untwisted glass fiber wound yarn and alkali-free untwisted glass fiber unidirectional cloth.

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