Cooling tower

Abstract

The utility model relates to a cooling tower which comprises a tower body, the top of the tower body is provided with a flue gas outlet, the lower part of the tower body is fixedly connected and communicated with a flue gas inlet pipe, the upper part of the tower body is provided with a cooling liquid inlet pipe in a penetrating manner, and the cooling liquid inlet pipe is connected and communicated with a spraying mechanism arranged in the tower body; the outer shell part of the tower body comprises a base shell arranged on the outer side of the tower body, and a ceramic anti-corrosion layer is fixedly adhered to the inner wall of the base shell; the ceramic anti-corrosion layer is formed by bonding a plurality of ceramic pieces, each ceramic piece is in an arc shape, the two side edges of each ceramic piece are provided with a side protruding edge and a side groove respectively, and the side protruding edges and the side grooves are matched in shape and arrangement position. According to the anti-corrosion cooling tower, the anti-corrosion ceramic layer formed by splicing the ceramic pieces is adopted, and a splicing mode similar to a mortise and tenon joint structure is adopted, so that the ceramic anti-corrosion layer can be effectively prevented from falling off, and the durability of the cooling tower is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of flue gas treatment equipment, and specifically relates to a cooling tower. Background Technology

[0002] High-temperature flue gas emission treatment is involved in various fields, including thermal power generation, steelmaking, and cement manufacturing. With the increasing prominence of environmental problems and growing public awareness of environmental protection, the treatment of high-temperature flue gas is receiving increasing attention. Besides desulfurization and denitrification, cooling high-temperature flue gas is also a crucial step in flue gas treatment. Cooling high-temperature flue gas can significantly reduce heat emissions into the environment and prevent thermal pollution.

[0003] Cooling towers are currently a very common and widely used high-temperature flue gas cooling and treatment device. To save energy and reduce consumption, existing units treating high-temperature flue gas typically utilize waste heat in stages. Before final emission, the flue gas temperature is generally between 200 and 300°C, a significant reduction compared to the initial temperature of over 900°C. After being cooled by spraying from a cooling tower, this portion of the flue gas can meet emission temperature standards, and after a series of subsequent treatments, it can be discharged.

[0004] Existing cooling towers generally use a concrete outer shell. Considering that some nitrogen and sulfur oxides remain in the flue gas, acidic liquids will splash onto the inner wall of the tower during cooling, causing corrosion. Therefore, a ceramic anti-corrosion layer is installed on the inner wall of the tower, serving as both a heat-resistant layer and a corrosion-resistant layer. However, existing anti-corrosion layers generally use sheet-like ceramic plates, installed in a "brick-laying" manner. The cement at the joints is easily eroded, leading to corrosion of the internal cement bonding layer. At the same time, long-term high-temperature operation can also easily cause the adhesion between the ceramic plates and the inner wall of the tower to loosen. These problems can cause the ceramic plates to fall off, leading to cooling tower failures, affecting operating efficiency, and increasing maintenance costs. Utility Model Content

[0005] This utility model addresses at least one technical problem existing in the prior art by providing a cooling tower that uses a corrosion-resistant ceramic layer made of ceramic sheets spliced ​​together and employs a splicing method similar to mortise and tenon joints, which can effectively prevent the ceramic corrosion-resistant layer from falling off and effectively improve the durability of the cooling tower.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A cooling tower includes a tower body, a flue gas outlet at the top of the tower body, a flue gas inlet pipe fixedly connected and connected to the lower part of the tower body, a coolant inlet pipe passing through the upper part of the tower body, the coolant inlet pipe being connected and connected to a spray mechanism installed inside the tower body, and the outer shell of the tower body including a base shell disposed on the outer side of the tower body, the inner wall of the base shell being fixedly bonded with a ceramic anti-corrosion layer; the ceramic anti-corrosion layer is composed of multiple ceramic sheets bonded together, the ceramic sheets being arc-shaped, with side protrusions and side grooves respectively provided on both sides, the shapes and locations of the side protrusions and side grooves being adapted to each other.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the ceramic sheets are bonded together using water glass and acid-resistant cement.

[0010] Furthermore, the ceramic sheet is an alumina porous ceramic sheet.

[0011] Furthermore, the side protrusion is semi-cylindrical, and the side groove is also semi-cylindrical.

[0012] Furthermore, the inner diameter of the semi-cylindrical groove of the side groove is 2-4 mm larger than the outer diameter of the semi-cylindrical ridge of the side protrusion.

[0013] Furthermore, the top and bottom of the ceramic sheet are respectively provided with a top protrusion and a bottom groove, and the shape and location of the top protrusion and the bottom groove are adapted to each other.

[0014] Furthermore, the top protrusion is semi-cylindrical, and the bottom groove is also semi-cylindrical.

[0015] Furthermore, the inner diameter of the semi-cylindrical groove of the bottom groove is 2-4 mm larger than the outer diameter of the semi-cylindrical ridge of the top protrusion.

[0016] Furthermore, a basalt fiber cloth layer is fixedly bonded between the base shell and the ceramic anti-corrosion layer.

[0017] Furthermore, the base shell, basalt fiber cloth layer and ceramic anti-corrosion layer are bonded together with PO42.5 silicate cement.

[0018] The beneficial effects of this utility model are as follows: This utility model improves the shell of existing cooling towers by designing ceramic sheets with a mortise and tenon structure. The ceramic anti-corrosion layer is changed from the existing "brick-and-mortise" method to a mortise and tenon splicing and then bonded structure. With the assistance of cement adhesive filler, the ceramic sheets can form a unified fixation. Combined with the bonding and fixing between the ceramic anti-corrosion layer and the tower base shell, this effectively improves the adhesion firmness of the ceramic sheets and prevents them from falling off. The mortise and tenon splicing of the ceramic sheets also increases the sealing performance at the joints, delaying the corrosion of the cement at the joints by the sulfuric acid-containing liquid splashed from the spray, which in turn corrodes the cement bonding between the ceramic anti-corrosion layer and the tower base shell, further reducing the risk of ceramic sheet detachment. This utility model has a simple structure and is not complicated to construct. It can effectively reduce the risk of cooling tower failure due to the detachment of the ceramic anti-corrosion layer, effectively improve the durability of the cooling tower, and reduce operation and maintenance costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the assembly structure of the ceramic anti-corrosion layer of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the ceramic sheet of this utility model;

[0022] Figure 4 This is a cross-sectional structural schematic diagram of the outer shell of the tower body of this utility model;

[0023] In the picture:

[0024] 1. Tower body, 2. Flue gas outlet, 3. Flue gas inlet pipe, 4. Coolant inlet pipe, 5. Ceramic plate, 5a. Side protrusion, 5b. Side groove, 5c. Top protrusion, 5d. Bottom groove, 6. Base shell, 7. Basalt fiber cloth layer. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] Example 1

[0027] like Figures 1-3 As shown, a cooling tower according to this embodiment includes a tower body 1, a flue gas outlet 2 at the top of the tower body 1, a flue gas inlet pipe 3 fixedly connected and connected to the lower part of the tower body 1, and a coolant inlet pipe 4 passing through the upper part of the tower body 1. The coolant inlet pipe 4 is connected and communicates with a spray mechanism located inside the tower body. The main structure of the cooling tower in this embodiment is similar to that of existing cooling towers, the difference being the structural improvement of the outer shell of the tower body 1.

[0028] In this embodiment, the outer shell of the tower body 1 includes a base shell 6 disposed on the outside of the tower body 1. A ceramic anti-corrosion layer is fixedly bonded to the inner wall of the base shell 6. The ceramic anti-corrosion layer is composed of multiple ceramic sheets 5 bonded together. The ceramic sheets 5 are arc-shaped, and the curvature of the ceramic sheets 5 is adapted to the curvature of the inner wall of the cooling tower body 1.

[0029] In this embodiment, the ceramic sheet 5 has a side protrusion 5a and a side groove 5b on both sides. The shapes and locations of the side protrusion 5a and the side groove 5b are compatible and can be spliced ​​together to form a mortise and tenon joint structure. The size of the side groove 5b is slightly larger than that of the side protrusion 5a. This dimensional allowance is used to fill the cement adhesive and for construction allowance.

[0030] After numerous experiments, the inventors determined that using semi-cylindrical side protrusions 5a and side grooves 5b makes construction more convenient and assembly easier. The dimensional allowance between the side grooves 5b and the side protrusions 5a should be controlled such that the inner diameter of the semi-cylindrical side groove 5b is 2-4 mm larger than the outer diameter of the semi-cylindrical side protrusion 5a. This ensures a sufficient adhesive layer thickness, guaranteeing a strong bond; it also results in a tighter joint, reducing the likelihood of ceramic pieces detaching, and allows for sufficient allowance during construction.

[0031] In this embodiment, the construction can be carried out by splicing a section of ceramic sheet 5, then applying cement to the back and bonding it to the inner wall of the base shell 6. Compared with the existing ceramic anti-corrosion layer tiling construction, the construction difficulty is not significantly changed.

[0032] In this preferred embodiment, the ceramic pieces 5 are bonded together using water glass and acid-resistant cement.

[0033] In this preferred embodiment, the ceramic sheet 5 is an alumina porous ceramic sheet.

[0034] In this embodiment of the cooling tower, the inner ceramic anti-corrosion layer is constructed by splicing together ceramic sheets 5 with side protrusions 5a and side grooves 5b on both sides, forming a mortise and tenon joint-like connection structure. This connection method, in addition to back-side bonding, provides additional fixation on both sides due to the mortise and tenon joint, effectively preventing detachment and improving the sealing of the joints between the ceramic sheets 5. Using water glass acid-resistant cement as the adhesive between the ceramic sheets 5 further enhances the corrosion resistance and sealing against acidic liquids at the joints. The use of porous alumina ceramic sheets ensures the high-temperature resistance of the ceramic anti-corrosion layer while effectively reducing costs.

[0035] Example 2

[0036] This embodiment is basically similar in structure to Embodiment 1, except for the improvement of ceramic sheet 5.

[0037] In this embodiment, the top and bottom of the ceramic sheet 5 are respectively provided with a top protrusion 5c and a bottom groove 5d, and the shape and location of the top protrusion 5c and the bottom groove 5d are compatible.

[0038] Similar to Example 1, the ceramic sheet 5 in this example also features a mortise and tenon joint structure at its top and bottom. This design further ensures the firmness of the ceramic sheet 5's attachment and effectively guarantees the sealing of the entire ceramic anti-corrosion layer and all joints of the ceramic sheet 5.

[0039] Similarly, the top protrusion 5c and bottom groove 5d in this embodiment can also be semi-cylindrical. The dimensional allowance between them can be the same as the dimensional allowance between the side groove 5b and side protrusion 5a in embodiment 1.

[0040] In this embodiment, the top protrusion 5c and the bottom groove 5d can adopt an arc-shaped design similar to that of the ceramic sheet 5, which makes the fixation more secure.

[0041] Example 3

[0042] This embodiment is basically similar in structure to Embodiment 2, except for the improvement of the outer shell.

[0043] like Figure 4 As shown, a basalt fiber cloth layer 7 is also fixedly bonded between the base shell 6 and the ceramic anti-corrosion layer.

[0044] In this embodiment, a basalt fiber cloth layer 7 is installed between the base shell 6 and the ceramic anti-corrosion layer. This effectively increases the overall strength of the cooling tower's outer shell and prevents fatigue cracking caused by long-term operation in a high-temperature, corrosive environment. Furthermore, the basalt fiber cloth layer 7 forms a rough outer layer on the inner wall surface of the base shell 6, which facilitates cement adhesion during construction, avoids internal cavities during construction, and improves construction quality.

[0045] In this embodiment, the base shell 6, the basalt fiber cloth layer 7, and the ceramic anti-corrosion layer are preferably bonded together using PO42.5 silicate cement.

[0046] The ceramic anti-corrosion layer in this embodiment already has high sealing performance, which can effectively prevent acidic liquids from seeping in from the joints of ceramic sheet 5. Therefore, PO42.5 silicate cement is used for internal bonding, which can effectively reduce costs.

[0047] In this utility model, all devices and components whose structures are not described are commercially available devices or components.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling tower, comprising a tower body (1), wherein a flue gas outlet (2) is provided at the top of the tower body (1), a flue gas inlet pipe (3) is fixedly connected and communicated with the lower part of the tower body (1), and a coolant inlet pipe (4) is provided through the upper part of the tower body (1), the coolant inlet pipe (4) being connected and communicated with a spray mechanism provided inside the tower body (1), characterized in that, The outer shell of the tower body (1) includes a base shell (6) disposed on the outside of the tower body (1). The inner wall of the base shell (6) is fixedly bonded with a ceramic anti-corrosion layer. The ceramic anti-corrosion layer is made of multiple ceramic pieces (5) bonded together. The ceramic pieces (5) are arc-shaped, and side protrusions (5a) and side grooves (5b) are respectively provided on both sides. The shape and location of the side protrusions (5a) and side grooves (5b) are compatible.

2. A cooling tower according to claim 1, characterised in that: The ceramic pieces (5) are bonded together using water glass and acid-resistant cement.

3. A cooling tower according to claim 1, characterised in that: The ceramic sheet (5) is an alumina porous ceramic sheet.

4. A cooling tower according to claim 1, wherein: The side protrusion (5a) is semi-cylindrical, and the side groove (5b) is also semi-cylindrical.

5. A cooling tower according to claim 3, characterised in that: The inner diameter of the semi-cylindrical groove (5b) is 2-4 mm larger than the outer diameter of the semi-cylindrical ridge (5a).

6. A cooling tower according to claim 1, characterized in that: The top and bottom of the ceramic sheet (5) are respectively provided with a top protrusion (5c) and a bottom groove (5d), and the shape and location of the top protrusion (5c) and the bottom groove (5d) are compatible.

7. A cooling tower according to claim 6, characterised in that: The top protrusion (5c) is semi-cylindrical, and the bottom groove (5d) is also semi-cylindrical.

8. A cooling tower according to claim 7, characterised in that: The inner diameter of the semi-cylindrical groove (5d) is 2-4 mm larger than the outer diameter of the semi-cylindrical ridge (5c).

9. A cooling tower according to claim 1, wherein: A basalt fiber cloth layer (7) is also fixedly bonded between the base shell (6) and the ceramic anti-corrosion layer.

10. A cooling tower according to claim 9, characterised in that: The base shell (6), basalt fiber cloth layer (7) and ceramic anti-corrosion layer are bonded together with PO42.5 silicate cement.

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