CN201837301U - Sherardizing and flexible engineering urushiol phthalein anticorrosion coating - Google Patents
Sherardizing and flexible engineering urushiol phthalein anticorrosion coating Download PDFInfo
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- CN201837301U CN201837301U CN2010205042262U CN201020504226U CN201837301U CN 201837301 U CN201837301 U CN 201837301U CN 2010205042262 U CN2010205042262 U CN 2010205042262U CN 201020504226 U CN201020504226 U CN 201020504226U CN 201837301 U CN201837301 U CN 201837301U
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- China
- Prior art keywords
- sherardizing
- phthalein
- cold exchange
- urushiol
- flexible engineering
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The utility model discloses a sherardizing and flexible engineering urushiol phthalein anticorrosion coating, and relates to the field of cold exchange equipment. The structure of the sherardizing and flexible engineering urushiol phthalein anticorrosion coating is that a sherardizing layer is arranged on the inner surface or the outer surface of a tube bundle of the cold exchange equipment; an anticorrosion coating covers the sherardizing layer of the tube bundle of the cold exchange equipment; and the sherardizing layer comprises a metallurgical mixing iron-zinc alloy layer and a zinc-iron alloy layer. The sherardizing and flexible engineering urushiol phthalein anticorrosion coating disclosed by the utility model is formed by integrally sherardizing the inner surface and the outer surface of the tube bundle of the cold exchange equipment in a high temperature and then adding the flexible engineering temperature-resistant urushiol phthalein coating to close the inner surface and the outer surface. The sherardizing coating has a remarkable characteristic that Zn5(CO3)2(OH)6, Zn5(OH)8Cl2H2O and NaZnCl(OH)6SO46H2O formed on the surface perform anticorrosion functions; and meanwhile, the sherardizing layer performing a cathode protection function can reduce the incidence rate of hydrogen embrittlement, hydrogen blistering and hydrogen induced cracking of equipment and prolong the service life of the equipment.
Description
Technical field
The utility model relates to the cold exchange device field, particularly a kind of zincizing and flexible engineering laccol phthalein corrosion-inhibiting coating.
Background technology
Cold exchange device is the visual plant in the petrochemical iy produced, accounts for 20% of the investment cost of founding the factory, accounts for 40% of process equipment gross weight.The chlorion that chloride, sulfide, nitride, aphthenic acids etc. and adding add man-hour in production run because in the crude oil, hydrogen etc. are under effects such as the burn into of higher temperature washes away, cold exchange device is often destroyed, shorten service life, causes serious economy loss.According to statistics, the annual whole cold exchange device that needs to change of petrochemical industry is about 2500, consumes 13000 tons of steel, about 200,000,000 yuan of direct economic loss, and the indirect loss of parking maintenance is then bigger, is about several times to tens times of cost of equipment.
Summary of the invention
The purpose of this utility model provide a kind of anti-corrosive properties strong, prolong the cold exchange device zincizing and the flexible engineering laccol phthalein corrosion-inhibiting coating in service life.
The utility model to achieve these goals, the technical scheme that is adopted is: a kind of zincizing and flexible engineering laccol phthalein corrosion-inhibiting coating are provided, comprise the cold exchange device tube bank, inner surface or outer surface in the cold exchange device tube bank are provided with zinc coat, are coated with corrosion-inhibiting coating outside cold exchange device tube bank zinc coat.
Described zinc coat comprises metallurgyization mixing fe-zn alloy layer and zinc-iron alloy layer.
The zinc coat that the inner surface of described cold exchange device tube bank or outer surface are provided with is followed successively by aurification and mixes fe-zn alloy layer and zinc-iron alloy layer.
Described corrosion-inhibiting coating is flexible engineering laccol phthalein resin corrosion-inhibiting coating.
The zinc-iron alloy layer of zincizing described in the utility model and flexible engineering laccol phthalein corrosion-inhibiting coating is meant that the content of zinc outwards increases in having gradually in the zinc-iron alloy layer, finally forms very thin zinc layer.
Zincizing described in the utility model and flexible engineering laccol phthalein corrosion-inhibiting coating are in the cold exchange device tube bank or the integral high-temperature zincizing of outer surface, and the laccol titanium coating that adds flexible engineering heatproof is sealed.Cold exchange device tube bank matrix needs earlier through the clean surface after oil removing, rust cleaning, the phosphatization, whole zincizing by tube bank is to improve corrosion-resistant, the abrasion resistance energy of cold exchange device, improve the service life of cold exchange device effectively, reduce the industrial use cost of cold exchange device.And in conjunction with the actual conditions of China's oil refining and oil, natural gas industry, zincizing adds the Combined Protection of flexible engineering laccol titanium, has wide promotion prospect and huge economic benefit.
Whole zincizing cold exchange device can improve service life more than 3 times, and the cold exchange device use cost can drop to original 60%.
Zincizing described in the utility model and flexible its beneficial effect of engineering laccol phthalein corrosion-inhibiting coating are: outstanding feature of zincizing coating is exactly the Zn that the surface forms
5(CO
3)
2(OH)
6, Zn
5(OH)
8Cl
2H
2O and NaZnCl(OH)
6SO
46H
2O has anti-corrosion function.Zinc coat has the cathodic protection effect, can reduce the incidence of equipment generation hydrogen embrittlement, hydrogen blister, hydrogen induced cracking (HIC), prolongs the service life of equipment.Zinc coat and corrosion-inhibiting coating acting in conjunction realize the Combined Protection (cathodic protection+coating) of equipment.Can significantly reduce thus owing to reasons such as maintenance and replacing cause economic loss, enhance productivity.Reduce because the environmental pollution that the cold exchange device leakage causes etc. have good social benefit and realistic meaning to reduction low-carbon emission, energy-conserving and environment-protective.The atmospheric and vacuum distillation unit of oil refining enterprise contains H
2S, H
2S+HCl+H
2O, aphthenic acids (RCOOH), catalytic unit contain H
2S+HCN+H
2The H of O, regenerating section
2S+NH
2+ CO
2+ H
2The O temperature is less than 120 ℃, the high temperature vulcanized hydrogen-type corrosion environment of and 240 ℃≤T of temperature≤340 ℃, still 340 ℃＜T＜400 ℃ high temperature S, H
2Corrosive environment, zincizing cold exchange device tube bank all has good anti-corrosion, the low temperature resistant H of its excellence
2S, SO
2, NH
3, NH
2-Under the situation that the low content chlorion exists, corrosion resistance equally also is applicable to for these reasons that greater than common Austenitic stainless steel pipe bundle the heat exchanger of ethylene cracker cracking gas system is anticorrosion.In particular for the tube bank of the water cooler of seawater, Zhong Shui, circulation, to adopt zincizing to add flexible engineering laccol titanium heatproof coating and carry out Combined Protection and carry out long-effective corrosion, its service life, real traditional corrosion-inhibiting coating was more than 1 times.
Zincizing described in the utility model and flexible engineering laccol phthalein corrosion-inhibiting coating are used for the tube bank of carbon steel cold exchange device; no matter be tube side one side seawater, recirculated water, Zhong Shui, or the sulfur-bearing of shell side one side, contain sewage, hydrocarbon medium such as ammonia; all has certain safeguard function; simultaneously; oozing also of zinc coat itself with the cathodic protection function, thus can prolong greatly cold exchange device service life.At some position as recirculated water, seawater, the serious position of sour water fouling, the tube bank of zincizing cold exchange device is anticorrosion to take into account use with the heatproof corrosion-inhibiting coating, learns from other's strong points to offset one's weaknesses, collaborative mutually, prolongs the cold exchange device purpose in service life thereby reach.
Description of drawings
Fig. 1 zincizing described in the utility model and flexible engineering laccol phthalein corrosion-inhibiting coating cross-sectional view.
Among the figure, 1-tube bank matrix surface; 2-metallurgyization mixing fe-zn alloy layer; 3-zinc-iron alloy layer; 4-flexible engineering laccol phthalein resin corrosion-inhibiting coating.
The specific embodiment
As shown in Figure 1, the outer surface of restraining at cold exchange device according to actual needs is provided with zincizing and flexible engineering laccol phthalein corrosion-inhibiting coating.
Zincizing and flexible engineering laccol phthalein corrosion-inhibiting coating comprise the cold exchange device tube bank, and the outer surface of restraining at cold exchange device is provided with zinc coat, are coated with corrosion-inhibiting coating outside cold exchange device tube bank zinc coat.
Zinc coat comprises metallurgyization mixing fe-zn alloy layer and zinc-iron alloy layer.
The zinc coat that the outer surface of cold exchange device tube bank is provided with is followed successively by metallurgyization mixing fe-zn alloy layer and zinc-iron alloy layer.Outer surface from the cold exchange device tube bank is followed successively by metallurgyization mixing fe-zn alloy layer, is zinc-iron alloy layer secondly.
Corrosion-inhibiting coating is flexible engineering laccol phthalein resin corrosion-inhibiting coating.
The cold exchange device tube bank is on the metal covering of derusting phosphating that deoils, take cylindrical shell to coat and contain zinc, catalyst, reducing agent, stabilizing agent, through after the pyrometallurgyization, stove is cold, opens the embedding cylindrical shell after reducing to uniform temperature, shifts out tube bank, naturally cooling, adopt dry pneumatics to purge, the surface of tube bank zincizing is reached till the cleaning, then the flexible engineering laccol in application four roads titanium coating successively.
The alloy layer thickness that zincizing and ferrous metals form is 80-120 μ m, and flexible engineering laccol titanium coating four road thickness are 140-160 μ m.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, all should be encompassed within the protection domain of the present utility model.
Claims (2)
1. zincizing and flexible engineering laccol phthalein corrosion-inhibiting coating comprise the cold exchange device tube bank, it is characterized in that: inner surface or outer surface in the cold exchange device tube bank are provided with zinc coat, are coated with corrosion-inhibiting coating outside cold exchange device tube bank zinc coat.
2. zincizing according to claim 1 and flexible engineering laccol phthalein corrosion-inhibiting coating is characterized in that: described corrosion-inhibiting coating is flexible engineering laccol phthalein resin corrosion-inhibiting coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205042262U CN201837301U (en) | 2010-08-25 | 2010-08-25 | Sherardizing and flexible engineering urushiol phthalein anticorrosion coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205042262U CN201837301U (en) | 2010-08-25 | 2010-08-25 | Sherardizing and flexible engineering urushiol phthalein anticorrosion coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201837301U true CN201837301U (en) | 2011-05-18 |
Family
ID=44007412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205042262U Expired - Lifetime CN201837301U (en) | 2010-08-25 | 2010-08-25 | Sherardizing and flexible engineering urushiol phthalein anticorrosion coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201837301U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673738A (en) * | 2012-09-17 | 2014-03-26 | 株式会社神户制钢所 | Aluminum radiating sheet for heat exchangers |
| CN110542343A (en) * | 2019-10-08 | 2019-12-06 | 广东石油化工学院 | High-temperature-resistant and corrosion-resistant coating structure for heat exchanger |
-
2010
- 2010-08-25 CN CN2010205042262U patent/CN201837301U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673738A (en) * | 2012-09-17 | 2014-03-26 | 株式会社神户制钢所 | Aluminum radiating sheet for heat exchangers |
| CN110542343A (en) * | 2019-10-08 | 2019-12-06 | 广东石油化工学院 | High-temperature-resistant and corrosion-resistant coating structure for heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180125 Address after: Zhongshan District Youth Street Dalian city Liaoning province 116000 55 unit 1, 8 floor No. 2 Patentee after: Dalian Tian Tian Anticorrosive Engineering Co., Ltd. Address before: 116001 Liaoning city of Dalian Province Qingyun street Zhongshan District No. 15, building 1101 Qingyun Yingshan Patentee before: Zou Jiqiang |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |