CN114029215A - Teflon lining anticorrosion process for large-scale storage tank plate - Google Patents
Teflon lining anticorrosion process for large-scale storage tank plate Download PDFInfo
- Publication number
- CN114029215A CN114029215A CN202111305956.9A CN202111305956A CN114029215A CN 114029215 A CN114029215 A CN 114029215A CN 202111305956 A CN202111305956 A CN 202111305956A CN 114029215 A CN114029215 A CN 114029215A
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- Prior art keywords
- tetrafluoro
- tank body
- anticorrosion
- paint
- treatment
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000003860 storage Methods 0.000 title claims abstract description 17
- 239000004809 Teflon Substances 0.000 title description 2
- 229920006362 Teflon® Polymers 0.000 title description 2
- 239000003973 paint Substances 0.000 claims abstract description 105
- 238000003466 welding Methods 0.000 claims abstract description 70
- 238000011282 treatment Methods 0.000 claims abstract description 54
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 42
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 42
- 238000005507 spraying Methods 0.000 claims abstract description 39
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 30
- 238000005260 corrosion Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 230000002421 anti-septic effect Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 2
- 230000002335 preservative effect Effects 0.000 claims description 2
- 238000005536 corrosion prevention Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a tetrafluoro anticorrosion process for a large-scale storage tank plate lining, which comprises primary anticorrosion treatment, secondary anticorrosion treatment and tertiary anticorrosion treatment, wherein the primary anticorrosion treatment comprises the following steps: the method comprises the following steps of cleaning a tank body, leveling the inner wall of the tank body, drying the inner wall of the tank body and spraying polytetrafluoroethylene anticorrosive paint, wherein the secondary anticorrosive treatment comprises the following steps: treating the surface of the lining plate, and spraying tetrafluoro anticorrosive paint on the surface of the lining plate, wherein the three anticorrosive treatment steps are as follows: lining plate welding treatment, lining plate welding position polishing and spraying of tetrafluoro anticorrosive paint are carried out based on the spraying of tetrafluoro anticorrosive paint in the three-time anticorrosive treatment: baking the PTFE anti-corrosion paint on two sides of the welding seam at the baking temperature of 120-145 ℃ before spraying the PTFE anti-corrosion paint on the welding seam, and spraying the PTFE anti-corrosion paint after baking. The invention can comprehensively improve the corrosion prevention effect of the tetrafluoro anticorrosive paint on the tank body and the lining plate, and the tetrafluoro anticorrosive paint on the surface of the welding line can be tightly combined with the tetrafluoro anticorrosive paint sprayed subsequently after being baked, thereby forming a compact tetrafluoro anticorrosive paint layer.
Description
Technical Field
The invention relates to the technical field of tetrafluoro anticorrosion, in particular to a tetrafluoro anticorrosion process for a large-scale storage tank plate lining.
Background
Polytetrafluoroethylene is commonly referred to as the king of plastic. It is the best engineering plastic in the world today. Polytetrafluoroethylene has excellent chemical stability, corrosion resistance and sealing properties. It can be used for a long time at a temperature of minus 200 ℃ to plus 250 ℃. It has high performance, self-lubricating, no adhesion, electric insulation and excellent ageing resistance. Various tetrafluoroethylene products are widely applied to the national economy fields of chemical industry, machinery, electronics, electrical appliances, war industry, aerospace, environmental protection and the like, and the anticorrosion process adopting the polytetrafluoroethylene coating is also called as a tetrafluoro anticorrosion process.
Through massive search, the prior art is found, and the publication number is as follows: CN112516919A discloses a high temperature and negative pressure resistant PTFE sheet lining technology, belonging to the technical field of chemical reaction production equipment manufacture, a high temperature and negative pressure resistant PTFE sheet lining technology, wherein the upper inner wall of an equipment upper shell is fixedly connected with a transition layer, the inner part of the transition layer is provided with a PTFE sheet lining layer, the transition layer is provided with a plurality of uniformly distributed through holes, the through holes are filled with fixing materials, and the PTFE sheet lining layer is firmly combined with the inner surface of the equipment shell through the action of the transition layer, thereby solving the problem that the PTFE sheet lining layer in steel lining PTFE anticorrosion equipment at home and abroad can not resist high temperature and negative pressure, meeting the higher requirements of chemical production, high purity new material production of wet metallurgy of rare metals, semiconductor polysilicon and the like, high temperature flue gas tail gas purification treatment and the like on the chemical lining PTFE equipment, really manufacturing various PTFE sheet lining equipment capable of resisting high temperature and negative pressure of 200 ℃, the steel lining PTFE anticorrosion equipment can resist various strong chemical corrosion.
In conclusion, in the existing anticorrosive process adopting tetrafluoro corrosion prevention, most of the anticorrosive paint is sprayed on the inner wall, but when the anticorrosive paint is applied to a storage tank and a storage tank lining plate for corrosion prevention, the tetrafluoro anticorrosive paint layer between the lining plate and the inner wall of the storage tank can be damaged due to the fact that the lining plate and the inner wall of the storage tank need to be welded, and when the anticorrosive paint is sprayed on the surface of a welding seam, the anticorrosive paint layer is layered with the anticorrosive paint layer sprayed in the prior art, so that the anticorrosive paint layer is easy to fall off after long-term use, the welding seam can be corroded, and the service life of the storage tank is shortened.
Disclosure of Invention
The invention aims to provide a tetrafluoro anticorrosion process for a large-scale storage tank plate lining, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the tetrafluoro anticorrosion process for the large-scale storage tank plate lining comprises primary anticorrosion treatment, secondary anticorrosion treatment and tertiary anticorrosion treatment, wherein the primary anticorrosion treatment comprises the following steps: the method comprises the following steps of cleaning a tank body, leveling the inner wall of the tank body, drying the inner wall of the tank body and spraying polytetrafluoroethylene anticorrosive paint, wherein the secondary anticorrosive treatment comprises the following steps: treating the surface of the lining plate, and spraying tetrafluoro anticorrosive paint on the surface of the lining plate, wherein the three anticorrosive treatment steps are as follows: welding the lining plate, polishing the welding position of the lining plate and spraying polytetrafluoroethylene anticorrosive paint.
Preferably, the primary preservative treatment steps are as follows:
s1: cleaning the tank body: the workers clean the inner wall of the tank body comprehensively to remove the rust layer on the inner wall of the tank body;
s2: leveling the inner wall of the tank body: the worker levels the inner wall of the tank body, polishes the inner wall of the tank body by using a polisher, and comprehensively levels and derusts the inside of the tank body;
s3: drying the inner wall of the tank body: the working personnel comprehensively clean the inner wall of the tank body, remove and treat magazines, and dry the inner wall of the tank body at the drying temperature of 80-110 ℃;
s4: and (3) spraying polytetrafluoroethylene anticorrosive paint: the worker sprays the polytetrafluoroethylene anti-corrosion paint on the inner wall of the tank body completely, the spraying paint surface is uniform, and the thickness of the sprayed polytetrafluoroethylene anti-corrosion paint is 0.3-0.5 mm.
Preferably, the secondary antiseptic treatment steps are as follows:
s1: surface treatment of the lining plate: the working personnel process the surface of the lining plate to remove dirt on the surface of the lining plate, derust and polish the surface of the lining plate, clean the dirt on the surface of the lining plate and dry the lining plate;
s2: spraying polytetrafluoroethylene anticorrosive paint on the surface of the lining plate: the working personnel sprays the tetrafluoro anticorrosion paint on the surface of the liner plate completely, and the thickness of the sprayed tetrafluoro anticorrosion paint is 0.3-0.5 mm.
Preferably, the three preservation treatment steps are as follows:
s1: welding a lining plate: welding the lining plates sprayed with the tetrafluoro anticorrosive paint on the inner wall of the tank body, arranging the lining plates on the inner wall of the tank body in sequence, and fixing the lining plates on the inner wall of the tank body by spot welding the lining plates and the tank body by workers;
s2: polishing the welding position of the lining plate: the worker processes the welding spot at the welding position of the lining plate and the tank body, and polishes the welded bulge and the welding seam to enable the welding seam to be smooth;
s3: and (3) spraying polytetrafluoroethylene anticorrosive paint: and (4) spraying the tetrafluoro anti-corrosion paint on the welding seam, so that the tetrafluoro anti-corrosion paint can completely cover the welding seam.
Preferably, based on the spraying of the tetrafluoro anticorrosion paint in the three anticorrosion treatments:
before the tetrafluoro anticorrosion paint is sprayed on the welding seam, the tetrafluoro anticorrosion paint skins on two sides of the welding seam are baked at the baking temperature of 120-145 ℃, and the tetrafluoro anticorrosion paint is sprayed after baking, so that the anticorrosive paint skins after primary anticorrosion treatment and secondary anticorrosion treatment are melted, and the anticorrosive paint sprayed by the tertiary anticorrosion treatment can be tightly combined with the tetrafluoro anticorrosion paint subjected to the primary anticorrosion treatment and the secondary protection treatment.
Compared with the prior art, the invention has the beneficial effects that: the polytetrafluoroethylene anticorrosive paint layer on the surface of the welding seam can be fused with the polytetrafluoroethylene anticorrosive paint layers on the two sides of the welding seam when the polytetrafluoroethylene anticorrosive paint is sprayed on the surface of the welding seam subsequently, so that the integral anticorrosive paint layer is formed, the integral anticorrosive paint layer has better sealing performance and can not be layered, the polytetrafluoroethylene anticorrosive paint layer on the surface of the welding seam can not fall off after long-time use, the problem that the welding seam is easy to corrode is avoided, and the service life of the tank body is effectively prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides four embodiments:
the first embodiment is as follows:
the polytetrafluoroethylene anticorrosion process for the large-scale storage tank plate lining comprises primary anticorrosion treatment, secondary anticorrosion treatment and tertiary anticorrosion treatment, wherein the primary anticorrosion treatment comprises the following steps: cleaning a tank body, leveling the inner wall of the tank body, drying the inner wall of the tank body and spraying polytetrafluoroethylene anticorrosive paint, wherein the secondary anticorrosive treatment comprises the following steps: treating the surface of the lining plate, spraying tetrafluoro anticorrosive paint on the surface of the lining plate, and performing three-time anticorrosive treatment by the following steps: welding the lining plate, polishing the welding position of the lining plate and spraying polytetrafluoroethylene anticorrosive paint.
Example two:
the primary antiseptic treatment comprises the following steps:
s1: cleaning the tank body: the workers clean the inner wall of the tank body comprehensively to remove the rust layer on the inner wall of the tank body;
s2: leveling the inner wall of the tank body: the worker levels the inner wall of the tank body, polishes the inner wall of the tank body by using a polisher, and comprehensively levels and derusts the inside of the tank body;
s3: drying the inner wall of the tank body: the working personnel comprehensively clean the inner wall of the tank body, remove and treat magazines, and dry the inner wall of the tank body at the drying temperature of 80-110 ℃;
s4: and (3) spraying polytetrafluoroethylene anticorrosive paint: the worker sprays the polytetrafluoroethylene anti-corrosion paint on the inner wall of the tank body completely, the spraying paint surface is uniform, and the thickness of the sprayed polytetrafluoroethylene anti-corrosion paint is 0.3-0.5 mm.
Example three:
the secondary antiseptic treatment comprises the following steps:
s1: surface treatment of the lining plate: the working personnel process the surface of the lining plate to remove dirt on the surface of the lining plate, derust and polish the surface of the lining plate, clean the dirt on the surface of the lining plate and dry the lining plate;
s2: spraying polytetrafluoroethylene anticorrosive paint on the surface of the lining plate: the working personnel sprays the tetrafluoro anticorrosion paint on the surface of the liner plate completely, and the thickness of the sprayed tetrafluoro anticorrosion paint is 0.3-0.5 mm.
Example four:
the third antiseptic treatment step is as follows:
s1: welding a lining plate: welding the lining plates sprayed with the tetrafluoro anticorrosive paint on the inner wall of the tank body, arranging the lining plates on the inner wall of the tank body in sequence, and fixing the lining plates on the inner wall of the tank body by spot welding the lining plates and the tank body by workers;
s2: polishing the welding position of the lining plate: the worker processes the welding spot at the welding position of the lining plate and the tank body, and polishes the welded bulge and the welding seam to enable the welding seam to be smooth;
s3: and (3) spraying polytetrafluoroethylene anticorrosive paint: and (4) spraying the tetrafluoro anti-corrosion paint on the welding seam, so that the tetrafluoro anti-corrosion paint can completely cover the welding seam.
In the spraying of the tetrafluoro anticorrosion paint based on the three-time anticorrosion treatment:
before the tetrafluoro anticorrosion paint is sprayed on the welding seam, the tetrafluoro anticorrosion paint skins on two sides of the welding seam are baked at the baking temperature of 120-145 ℃, and the tetrafluoro anticorrosion paint is sprayed after baking, so that the anticorrosive paint skins after primary anticorrosion treatment and secondary anticorrosion treatment are melted, and the anticorrosive paint sprayed by the tertiary anticorrosion treatment can be tightly combined with the tetrafluoro anticorrosion paint subjected to the primary anticorrosion treatment and the secondary protection treatment. The processing of polishing is located to the solder joint between welt and the jar body, and carry out the tetrafluoro anticorrosive paint spraying to the solder joint department, can effectively reduce the problem that the welding seam received the corruption, and during the welding seam spraying anticorrosive paint, toast the tetrafluoro anticorrosive paint layer of welt and internal wall of tank, make the welt of welding seam both sides and internal wall of tank tetrafluoro anticorrosive paint layer melt, when making follow-up welding seam surface spraying tetrafluoro anticorrosive paint, the tetrafluoro anticorrosive paint layer on welding seam surface can fuse with the tetrafluoro anticorrosive paint layer of welding seam both sides, thereby constitute a holistic anticorrosive paint layer, possess better sealing performance, can not produce the layering, make after long-time the use, the tetrafluoro anticorrosive paint layer on welding seam surface can not produce and drop, avoided the welding seam to receive the problem of corruption easily, thereby the life of the jar body has effectively been prolonged.
The working principle is as follows: the processing of polishing is located to the solder joint between welt and the jar body, and carry out the tetrafluoro anticorrosive paint spraying to the solder joint department, can effectively reduce the problem that the welding seam received the corruption, and during the welding seam spraying anticorrosive paint, toast the tetrafluoro anticorrosive paint layer of welt and internal wall of tank, make the welt of welding seam both sides and internal wall of tank tetrafluoro anticorrosive paint layer melt, when making follow-up welding seam surface spraying tetrafluoro anticorrosive paint, the tetrafluoro anticorrosive paint layer on welding seam surface can fuse with the tetrafluoro anticorrosive paint layer of welding seam both sides, thereby constitute a holistic anticorrosive paint layer, possess better sealing performance, can not produce the layering, make after long-time the use, the tetrafluoro anticorrosive paint layer on welding seam surface can not produce and drop, avoided the welding seam to receive the problem of corruption easily, thereby the life of the jar body has effectively been prolonged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. The tetrafluoro anticorrosion process for the large-scale storage tank plate lining is characterized in that: the anticorrosion process comprises primary anticorrosion treatment, secondary anticorrosion treatment and tertiary anticorrosion treatment, wherein the primary anticorrosion treatment comprises the following steps: the method comprises the following steps of cleaning a tank body, leveling the inner wall of the tank body, drying the inner wall of the tank body and spraying polytetrafluoroethylene anticorrosive paint, wherein the secondary anticorrosive treatment comprises the following steps: treating the surface of the lining plate, and spraying tetrafluoro anticorrosive paint on the surface of the lining plate, wherein the three anticorrosive treatment steps are as follows: welding the lining plate, polishing the welding position of the lining plate and spraying polytetrafluoroethylene anticorrosive paint.
2. The tetrafluoro anticorrosion process for the large-scale storage tank plate lining of claim 1, which is characterized in that: the primary antiseptic treatment comprises the following steps:
s1: cleaning the tank body: the workers clean the inner wall of the tank body comprehensively to remove the rust layer on the inner wall of the tank body;
s2: leveling the inner wall of the tank body: the worker levels the inner wall of the tank body, polishes the inner wall of the tank body by using a polisher, and comprehensively levels and derusts the inside of the tank body;
s3: drying the inner wall of the tank body: the working personnel comprehensively clean the inner wall of the tank body, remove and treat magazines, and dry the inner wall of the tank body at the drying temperature of 80-110 ℃;
s4: and (3) spraying polytetrafluoroethylene anticorrosive paint: the worker sprays the polytetrafluoroethylene anti-corrosion paint on the inner wall of the tank body completely, the spraying paint surface is uniform, and the thickness of the sprayed polytetrafluoroethylene anti-corrosion paint is 0.3-0.5 mm.
3. The tetrafluoro anticorrosion process for the large-scale storage tank plate lining of claim 1, which is characterized in that: the secondary antiseptic treatment comprises the following steps:
s1: surface treatment of the lining plate: the working personnel process the surface of the lining plate to remove dirt on the surface of the lining plate, derust and polish the surface of the lining plate, clean the dirt on the surface of the lining plate and dry the lining plate;
s2: spraying polytetrafluoroethylene anticorrosive paint on the surface of the lining plate: the working personnel sprays the tetrafluoro anticorrosion paint on the surface of the liner plate completely, and the thickness of the sprayed tetrafluoro anticorrosion paint is 0.3-0.5 mm.
4. The tetrafluoro anticorrosion process for the large-scale storage tank plate lining of claim 1, which is characterized in that: the three-time preservative treatment steps are as follows:
s1: welding a lining plate: welding the lining plates sprayed with the tetrafluoro anticorrosive paint on the inner wall of the tank body, arranging the lining plates on the inner wall of the tank body in sequence, and fixing the lining plates on the inner wall of the tank body by spot welding the lining plates and the tank body by workers;
s2: polishing the welding position of the lining plate: the worker processes the welding spot at the welding position of the lining plate and the tank body, and polishes the welded bulge and the welding seam to enable the welding seam to be smooth;
s3: and (3) spraying polytetrafluoroethylene anticorrosive paint: and (4) spraying the tetrafluoro anti-corrosion paint on the welding seam, so that the tetrafluoro anti-corrosion paint can completely cover the welding seam.
5. The tetrafluoro anticorrosion process for the large-scale storage tank plate lining of claim 1, which is characterized in that: in the spraying of the tetrafluoro anticorrosion paint based on the three-time anticorrosion treatment:
before the tetrafluoro anticorrosion paint is sprayed on the welding seam, the tetrafluoro anticorrosion paint skins on two sides of the welding seam are baked at the baking temperature of 120-145 ℃, and the tetrafluoro anticorrosion paint is sprayed after baking, so that the anticorrosive paint skins after primary anticorrosion treatment and secondary anticorrosion treatment are melted, and the anticorrosive paint sprayed by the tertiary anticorrosion treatment can be tightly combined with the tetrafluoro anticorrosion paint subjected to the primary anticorrosion treatment and the secondary protection treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111305956.9A CN114029215A (en) | 2021-11-05 | 2021-11-05 | Teflon lining anticorrosion process for large-scale storage tank plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111305956.9A CN114029215A (en) | 2021-11-05 | 2021-11-05 | Teflon lining anticorrosion process for large-scale storage tank plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115106724A (en) * | 2022-06-07 | 2022-09-27 | 扬州市银源汽车配件有限公司 | Integral forming processing method for special-shaped section bar of cabin door framework |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015016395A1 (en) * | 2013-07-29 | 2015-02-05 | Moon Young Joon | Method for sealing bolt-connection-type metal structure |
| CN105413984A (en) * | 2015-10-28 | 2016-03-23 | 南京钢铁股份有限公司 | Protecting method for prolonging service life of ammonia water tank |
| CN110394290A (en) * | 2019-07-24 | 2019-11-01 | 南通优氟防腐科技有限公司 | A kind of anti-corrosion spray technique based on tetrafluoride material |
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2021
- 2021-11-05 CN CN202111305956.9A patent/CN114029215A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015016395A1 (en) * | 2013-07-29 | 2015-02-05 | Moon Young Joon | Method for sealing bolt-connection-type metal structure |
| CN105413984A (en) * | 2015-10-28 | 2016-03-23 | 南京钢铁股份有限公司 | Protecting method for prolonging service life of ammonia water tank |
| CN110394290A (en) * | 2019-07-24 | 2019-11-01 | 南通优氟防腐科技有限公司 | A kind of anti-corrosion spray technique based on tetrafluoride material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115106724A (en) * | 2022-06-07 | 2022-09-27 | 扬州市银源汽车配件有限公司 | Integral forming processing method for special-shaped section bar of cabin door framework |
| CN115106724B (en) * | 2022-06-07 | 2024-02-27 | 扬州市银源汽车配件有限公司 | Integral molding processing method for cabin door framework profiled bar |
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Application publication date: 20220211 |