CN215311366U - Absorption tower anticorrosion structure - Google Patents
Absorption tower anticorrosion structure Download PDFInfo
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- CN215311366U CN215311366U CN202120849354.9U CN202120849354U CN215311366U CN 215311366 U CN215311366 U CN 215311366U CN 202120849354 U CN202120849354 U CN 202120849354U CN 215311366 U CN215311366 U CN 215311366U
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Abstract
The utility model discloses an absorption tower anticorrosion structure, relates to the technical field of electrolytic aluminum production equipment, and mainly aims to provide an absorption tower anticorrosion structure which is convenient to install and replace and can prolong the service life of an absorption tower. The main technical scheme of the utility model is as follows: an absorption tower corrosion prevention structure comprising: the tower body comprises a wallboard, a surface layer and an anticorrosive layer, wherein the anticorrosive layer comprises a bottom coating, a first glass flake, a second glass flake and a reinforced fiber layer, the bottom coating is attached to the wallboard, one side of the first glass flake is attached to the bottom coating, the other side of the first glass flake is attached to the second glass flake, and the reinforced fiber layer is arranged between the second glass flake and the surface layer; and the smoke exhaust component is arranged at the upper part of the tower body. The utility model is mainly used for producing electrolytic aluminum.
Description
Technical Field
The utility model relates to the technical field of electrolytic aluminum production equipment, in particular to an absorption tower anticorrosion structure.
Background
Along with the development of industrialization, the requirements of environmental protection and the emission of flue gas of electrolytic aluminum are continuously stricter, and the national ultra-low emission index must be met. In an electrolytic aluminum desulfurization system, an absorption tower is a core device and is required to bear the characteristic of acid-base valence-mass replacement, so that the absorption tower faces a severe corrosion environment, the requirement on corrosion prevention conditions is severe, the absorption tower needs to resist the environment such as high-temperature flue gas, sulfur dioxide and flue condensed water corrosion, the whole absorption tower is made of low-carbon steel materials by welding, the service life and the reliability of the absorption tower are greatly prolonged and significant in the process of using wet desulfurization, and especially under the increasingly strict supervision environment in which a flue gas bypass is cancelled at present domestically, the corrosion prevention method in the absorption tower influences the key factors of the service life and the reliability of the absorption tower.
The internal corrosion prevention process of the existing electrolytic aluminum flue gas desulfurization absorption tower is to perform corrosion prevention treatment by using resin, a lining full alloy plate and a lining high nickel plate according to national regulations, however, because the temperature of the flue gas in the absorption tower changes, the corrosion resistance degree of different areas is different, the corrosion resistance degree of some areas is high, and the corrosion resistance degree of some areas is low, therefore, by adopting a single corrosion prevention design, all parts must be brought according to the corrosion prevention requirement of the area which is most easily corroded, and huge waste is caused to resources and cost.
SUMMERY OF THE UTILITY MODEL
In view of this, an embodiment of the present invention provides an absorption tower anticorrosion structure, and mainly aims to provide an absorption tower anticorrosion structure which is convenient to install and replace and can prolong the service life of an absorption tower.
In order to achieve the purpose, the utility model mainly provides the following technical scheme:
the embodiment of the utility model provides an absorption tower anticorrosion structure, which comprises:
the tower comprises a tower body, wherein the tower body comprises a wallboard, a surface layer and an anticorrosive layer, the anticorrosive layer comprises a bottom coating, a first glass flake, a second glass flake and a reinforced fiber layer, the bottom coating is attached to the wallboard, one side of the first glass flake is attached to the bottom coating, the other side of the first glass flake is attached to the second glass flake, and the reinforced fiber layer is arranged between the second glass flake and the surface layer;
and the smoke exhaust component is arranged at the upper part of the tower body.
Further, the tower body still includes the inlet pipe, the inlet pipe connect in the wallboard.
Further, the first glass flake, the second glass flake and the reinforcing fiber layer extend to the inner wall of the feeding pipe.
Further, the part of discharging fume includes body, titanium sheet layer, packing strip and apron body fixed connection in the surface course, the titanium sheet layer laminate in the inner wall of body, the titanium sheet layer has first through-hole, the packing strip sets up in the first through-hole, the apron cover in first through-hole, and, apron fixed connection in the titanium sheet layer.
Further, the pipe body is provided with a first welding hole, and the axis of the first welding hole is overlapped with the axis of the first through hole.
Further, the thickness of the first glass flake and the second glass flake is 0.75mm to 1 mm.
Further, the thickness of the reinforcing fiber layer is 1.8mm to 2 mm.
Further, the reinforced fiber layer comprises a resin coating and glass cloth, and the resin coating is attached to the glass cloth.
Further, the reinforced fiber layer further comprises a glass mat, and the glass mat is attached to the glass cloth.
Compared with the prior art, the utility model has the following technical effects:
according to the technical scheme provided by the embodiment of the utility model, the tower body comprises a wallboard, a surface layer and an anticorrosive layer, wherein the anticorrosive layer comprises a bottom coating, a first glass flake, a second glass flake and a reinforcing fiber layer; the smoke exhaust part is arranged at the upper part of the tower body, compared with the prior art, the smoke exhaust part adopts resin, a lining full alloy plate and a lining high nickel plate for corrosion prevention treatment, however, because the temperature of smoke inside the absorption tower changes, the difference of corrosion resistance degrees of different areas, the corrosion resistance degree of some areas is high, the corrosion resistance degree of some areas is low, therefore, a single corrosion prevention design is adopted, all parts must enter according to the corrosion prevention requirement of the area which is most easily corroded, and huge waste is caused to resources and cost, in the technical scheme, the corrosion prevention layer is arranged between the wall plate and the surface layer, the corrosion prevention layer consists of a bottom coating, a first glass flake, a second glass flake and a reinforced fiber layer, the bottom coating is attached to the wall plate, one side of the first glass flake is attached to the bottom coating, the other side of the first glass flake is attached to the second glass flake, the reinforced fiber layer is arranged between the second glass flake and the surface layer, the anticorrosive coating has excellent chemical and high-temperature wet corrosive gas resistance, lower water vapor permeability and hardening shrinkage, high temperature impact resistance, lower abrasion resistance, convenient construction and higher mechanical strength, and achieves the technical effect of improving the anticorrosive performance of the absorption tower.
Drawings
Fig. 1 is a schematic structural diagram of an absorption tower corrosion prevention structure according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is an enlarged schematic view of a portion B in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 3, an embodiment of the present invention provides an absorption tower corrosion prevention structure, including:
the tower body 1 comprises a wallboard 11, a surface layer 12 and an anticorrosive layer, wherein the anticorrosive layer comprises a bottom coating 131, a first glass flake 132, a second glass flake 133 and a reinforcing fiber layer 134, the bottom coating 131 is attached to the wallboard 11, one side of the first glass flake 132 is attached to the bottom coating 131, the other side of the first glass flake 132 is attached to the second glass flake 133, and the reinforcing fiber layer 134 is arranged between the second glass flake 133 and the surface layer 12;
and the smoke exhaust component 2 is arranged at the upper part of the tower body 1.
In the technical scheme provided by the embodiment of the utility model, the tower body 1 comprises a wallboard 11, a surface layer 12 and an anticorrosive layer, wherein the anticorrosive layer comprises a bottom coating 131, a first glass flake 132, a second glass flake 133 and a reinforced fiber layer 134, the bottom coating 131 is attached to the wallboard 11, one side of the first glass flake 132 is attached to the bottom coating 131, the other side of the first glass flake 132 is attached to the second glass flake 133, and the reinforced fiber layer 134 is arranged between the second glass flake 133 and the surface layer 12; the smoke exhaust part 2 and the smoke exhaust part 2 are arranged at the upper part of the tower body 1, compared with the prior art, the smoke exhaust part 2 adopts resin, a lining full alloy plate and a lining high nickel plate for corrosion prevention treatment, however, because the temperature of smoke inside the absorption tower changes, the difference of corrosion resistance degrees of different areas, the corrosion resistance degree of some areas is high, the corrosion resistance degree of some areas is low, therefore, a single corrosion prevention design is adopted, all parts must be brought according to the corrosion prevention requirement of the area which is most easily corroded, and huge waste is caused to resources and cost, in the technical scheme, an anticorrosive layer is arranged between the wall plate 11 and the surface layer 12, the anticorrosive layer consists of a bottom layer coating 131, a first glass flake 132, a second glass flake 133 and a reinforced fiber layer 134, the bottom layer coating 131 is attached to the wall plate 11, one side of the first glass flake 132 is attached to the bottom layer coating 131, the other side is attached to the second glass flake 133, reinforcing fiber layer 134 sets up between second glass scale 133 and surface course 12 for the anticorrosive coating possesses good chemical resistance and high temperature humid state corrosive gas's performance, lower water vapor permeability and hardening shrinkage factor, and, the anticorrosive coating still has high temperature resistant and with the ability of strong temperature impact resistance, and lower wearing and tearing performance, simultaneously, still has the characteristics of convenient construction and higher mechanical strength, thereby reaches the technological effect that improves the anticorrosive performance of absorption tower.
The tower body 1 is used for providing a reaction site of the absorption tower, the tower body 1 comprises a wallboard 11, a surface layer 12 and an anticorrosive layer, the anticorrosive layer comprises a bottom coating 131, a first glass flake 132, a second glass flake 133 and a reinforced fiber layer 134, the bottom coating 131 is attached to the wallboard 11, one side of the first glass flake 132 is attached to the bottom coating 131, the other side of the first glass flake 132 is attached to the second glass flake 133, and the reinforced fiber layer 134 is arranged between the second glass flake 133 and the surface layer 12; the smoke exhaust part 2 is used for exhausting smoke, the smoke exhaust part 2 is arranged at the upper part of the tower body 1, the wall plate 11 is made of steel materials, before an anticorrosive coating is manufactured, the wall plate 11 needs to be treated, sand blasting is carried out on the wall plate 11 firstly, sand blasting is carried out from inside to outside, the sand blasting is carried out sequentially from one end to the other end, the surface of steel products does not have visible attachments such as grease, dirt, oxide skin, iron rust, paint coating and the like, any residual mark is only a slight spot-shaped or stripe-shaped color spot, the roughness is 50 mu m, and the quality is checked after the sand blasting is finished; if the quality is not qualified enough, marking the defect part, and then performing additional spraying; then, sand and dust which are remained after sand blasting are removed, the surface to be treated is ensured to be clean, after sand blasting and rust removing are finished, the sand and dust which are remained after sand blasting are completely removed by utilizing compressed air and a brush, and the surface to be treated is ensured to be clean; then, painting a bottom coating 131, mixing the bottom coating 131 and a curing agent according to a specified ratio, and uniformly painting by a roller or a hairbrush, wherein the bottom coating is painted as soon as possible after sand blasting, and after painting, no gloss change caused by silting, sagging, brush leakage or uneven thickness is confirmed, and the bottom coating 131 adopts a high-temperature bottom coating, has good chemical resistance, heat resistance and solvent resistance, and meanwhile, has excellent adhesion with iron and metal substrates, good air-drying property, no stickiness on the surface after construction, excellent construction performance and suitability for various construction forms; then brushing a first glass flake 132, before brushing, controlling the temperature in the tower body 1 to be more than 10 ℃ and the humidity to be more than 85%, then blending the glass flake material and a curing agent according to the proportion of 1:0.03, fully and uniformly stirring the blended glass flake material by using a handheld stirrer for at least 3 minutes, ensuring the average thickness to be 0.75-1 mm in the implementation process, optionally dipping a small amount of styrene into the coated flake by lightly rolling and pressing the styrene by using a roller, fully flattening the flake, reducing the phenomena of burrs, air holes and the like caused in the implementation process, and adjusting the surface thickness to be uniform; after the construction is finished, visual and finger touch inspection is carried out to confirm that the defects of bubbling, scars, sagging marks, unevenness, poor hardening and the like do not exist, then the second glass flake 133 is coated, the second glass flake 133 is coated on the surface of the first glass flake 132, after the second glass flake 133 is hardened, the reinforcing fiber layer 134 is coated, the thickness of the reinforcing fiber layer 134 is 1.8mm to 2mm, the reinforcing fiber layer 134 generally comprises a resin coating and glass cloth, the resin layer is coated on the surface of the second glass flake 133, then the glass cloth is immediately attached on the resin layer, and defoaming is carried out by a defoaming roller for avoiding forming wrinkles so as to fully soak the resin, then the surface is rolled by a tool so as to remove bubbles, and the surface is smooth; optionally, a layer of glass cloth can be further pasted, then the surface is rolled by a tool to remove air bubbles, so that the surface is smooth, then a layer of glass mat can be pasted on the surface of the glass cloth, so that the resin layer fully soaks the glass mat, finally the surface layer 12 is coated by a brush or a roller, the phenomena of surface scraping, accumulation, coating leakage and the like are avoided in the coating process, the surface layer 12 is a high-temperature surface layer 12 which has excellent chemical resistance, heat resistance and solubility resistance, has excellent adhesion with other materials, is smooth and flat, can prevent adhesion and is easy to clean, can seal the lining surface of the glass flake material, and improves the corrosion resistance of the glass flake material, in the technical scheme, an anti-corrosion layer is arranged between the wall plate 11 and the surface layer 12 and consists of a bottom coating 131, a first glass flake 132, a second glass flake 133 and a reinforcing fiber layer 134, bottom coating 131 laminating and wallboard 11, one side laminating in bottom coating 131 of first glass scale 132, the opposite side laminating in second glass scale 133, reinforcing fiber layer 134 sets up between second glass scale 133 and surface course 12, make the anticorrosive coating possess good chemical resistance and high temperature humid state corrosive gas's performance, lower water vapor permeability and hardening shrinkage factor, and, the anticorrosive coating still has high temperature resistant and strong temperature shock resistant ability, and lower wearing and tearing performance, and simultaneously, still have the characteristics of convenient construction and higher mechanical strength, thereby reach the technological effect who improves the anticorrosive performance of absorption tower.
Further, the tower body 1 further comprises a feeding pipe 3, and the feeding pipe 3 is connected to the wall plate 11. In this embodiment, the feeding pipe 3 is added, the feeding pipe 3 is made of an alloy plate material, the feeding pipe 3 is welded on the tower body 1, furthermore, a very tight surface of a welding position needs to be cleaned by acetone, so that no impurities such as oil stains and the like are ensured, the surface of the tower body 1 in an alloy welding seam area needs to be polished and derusted, bright metal natural color is exposed, plug welding points of the alloy plate and the tower body 1 are distributed according to a triangle, when the tower body 1 is subjected to sand blasting, an alloy lining layer needs to be protected, a glass scale anti-corrosion layer is transited from the surface of carbon steel in the tower to the alloy lining layer, that is, the first glass scale 132, the second glass scale 133 and the reinforcing fiber layer 134 extend to the inner wall of the feeding pipe 3, meanwhile, one end of the feeding pipe 3 needs to have a certain gradient, liquid is prevented from flowing backwards, and the anti-corrosion performance of the feeding pipe 3 is improved.
Further, the part 2 of discharging fume includes body 21, titanium sheet layer 22, packing strip 23 and apron 24, body 21 fixed connection in surface course 12, and titanium sheet layer 22 laminates in the inner wall of body 21, and titanium sheet layer 22 has first through-hole 25, and packing strip 23 sets up in first through-hole 25, and apron 24 covers in first through-hole 25 to, apron 24 fixed connection in titanium sheet layer 22. In this embodiment, smoke exhausting component 2 has further been injectd, weld through the titanium composite sheet between body 21 and the tower body 1, titanium sheet layer 22 laminates in the inner wall of body 21, titanium sheet layer 22 welds on body 21, should avoid titanium to flow into carbon steel basic unit welding seam among the welding process, titanium sheet layer 22 has first through-hole 25, filler strip 23 sets up in first through-hole 25, apron 24 covers in first through-hole 25, and, apron 24 fixed connection is in titanium sheet layer 22, body 21 has first welding hole 26, the axis of first welding hole 26 and the mutual coincidence of the axis of first through-hole 25, weld filler strip 23 through first welding hole 26, then cover apron 24 on filler strip 23 upper portion, then weld apron 24, thereby reach the fixed technological effect of smoke exhausting component 2.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. An absorption tower corrosion prevention structure, comprising:
the tower comprises a tower body, wherein the tower body comprises a wallboard, a surface layer and an anticorrosive layer, the anticorrosive layer comprises a bottom coating, a first glass flake, a second glass flake and a reinforced fiber layer, the bottom coating is attached to the wallboard, one side of the first glass flake is attached to the bottom coating, the other side of the first glass flake is attached to the second glass flake, and the reinforced fiber layer is arranged between the second glass flake and the surface layer;
and the smoke exhaust component is arranged at the upper part of the tower body.
2. The absorption tower corrosion prevention structure according to claim 1,
the tower body still includes the inlet pipe, the inlet pipe connect in the wallboard.
3. The absorption tower corrosion prevention structure according to claim 2,
the first glass flake, the second glass flake and the reinforcing fiber layer extend to the inner wall of the feeding pipe.
4. The absorption tower corrosion prevention structure according to claim 1,
the part of discharging fume includes body, titanium sheet layer, packing strip and apron body fixed connection in the surface course, the titanium sheet layer laminate in the inner wall of body, the titanium sheet layer has first through-hole, the packing strip sets up in the first through-hole, the apron cover in first through-hole, and, apron fixed connection in the titanium sheet layer.
5. The absorption tower corrosion prevention structure according to claim 4,
the pipe body is provided with a first welding hole, and the axis of the first welding hole is overlapped with the axis of the first through hole.
6. The absorption tower corrosion prevention structure according to any one of claims 1 to 5,
the first glass flake and the second glass flake have a thickness of 0.75mm to 1 mm.
7. The absorption tower corrosion prevention structure according to any one of claims 1 to 5,
the thickness of the reinforced fiber layer is 1.8mm to 2 mm.
8. The absorption tower corrosion prevention structure according to claim 7,
the reinforced fiber layer comprises a resin coating and glass cloth, and the resin coating is attached to the glass cloth.
9. The absorption tower corrosion prevention structure according to claim 8,
the reinforced fiber layer further comprises a glass surface felt, and the glass surface felt is attached to the glass cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120849354.9U CN215311366U (en) | 2021-04-23 | 2021-04-23 | Absorption tower anticorrosion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120849354.9U CN215311366U (en) | 2021-04-23 | 2021-04-23 | Absorption tower anticorrosion structure |
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| Publication Number | Publication Date |
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| CN215311366U true CN215311366U (en) | 2021-12-28 |
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| CN202120849354.9U Active CN215311366U (en) | 2021-04-23 | 2021-04-23 | Absorption tower anticorrosion structure |
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- 2021-04-23 CN CN202120849354.9U patent/CN215311366U/en active Active
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