CN202630783U - Corrosion-resistant coating for EFT heat exchanger - Google Patents
Corrosion-resistant coating for EFT heat exchanger Download PDFInfo
- Publication number
- CN202630783U CN202630783U CN 201220276261 CN201220276261U CN202630783U CN 202630783 U CN202630783 U CN 202630783U CN 201220276261 CN201220276261 CN 201220276261 CN 201220276261 U CN201220276261 U CN 201220276261U CN 202630783 U CN202630783 U CN 202630783U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- corrosion
- oil
- eft
- resistant coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model discloses a corrosion-resistant coating for an EFT heat exchanger. The corrosion-resistant coating is coated on the surface of a heat exchanger tube bundle body and is used for corrosion prevention for coolers in petrochemical units, particularly inside and outside corrosion prevention of oil/water or oil/oil heat exchangers, and is suitable for the water side phase such as seawater cooling, reclaimed water and water recirculator, and the oil-gas side can be used for oil gas, gasoline, kerosene, diesel, middle raw material oil and inside and outside corrosion prevention of the sulfur-containing and naphthenic acid-containing furnace bottom heat exchanger on the top/bottom with the temperature of lower than 250 DEG C for a long time. According to the heat exchanger, the EFT polysiloxane modified paint phenolphthalein corrosion-resistant tube bundles, the corrosion resistance and washing resistance of the heat exchanger can be greatly improved, the service life of the heat exchanger is effectively prolonged, the industrial use cost of the heat exchanger is reduced, the economic losses due to maintenance, replacement and other reasons are obviously reduced, the production efficiency is improved, the environmental pollution and the like caused by leakage of the heat exchanger are reduced, and the corrosion-resistant coating has good social benefits.
Description
Technical field
The utility model relates to the cold exchange device field, relates in particular to a kind of water cooler aseptic technic.
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; Heat exchanger is often destroyed; Shorten service life, causes serious economy loss.According to statistics, petrochemical industry needs the whole heat transmission equipment of replacing to be about 2500 every year, 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.
The utility model content
Cause problems such as life-span weak point owing to being corroded easily in order to overcome the traditional cold exchange device, the utility model provides a kind of heat exchanger to use the EFT corrosion-inhibiting coating.
The utility model for realizing the technical scheme that above-mentioned purpose adopted is: EFT heat exchanger corrosion-inhibiting coating, the heat exchanger tube body surface scribbles corrosion-inhibiting coating.
Said corrosion-inhibiting coating is EFT corrosion-inhibiting coating or EFT corrosion-inhibiting coating and zincizing alloy mixed coating.
EFT special anti-corrosion coating; It is anticorrosion to be used for petrochemical industry unit's cooler; Oil/water or oil/oil heat exchanger are interior, internal and external anti-corrosive; Mutually no matter the water side be cooled with seawater, or middle water, water recirculator all are suitable for, the oil gas side can be used for oil gas, gasoline, kerosene, diesel oil, intermediate raw material oil and long-term serviceability temperature less than 250 ℃ Ta Ding tower at the bottom of sulfur-bearing, contain heat exchanger internal and external anti-corrosive at the bottom of the cycloalkanes acid tower.Heat exchanger is through adopting the tube bank of the polysiloxane-modified laccol phthalein of EFT corrosion-resistant; Can improve corrosion-resistant, the abrasion resistance ability of heat exchanger greatly, the service life of improving heat exchanger effectively, the industrial use cost of reduction heat exchanger; Significantly reduced owing to reasons such as maintenance and replacing cause economic loss; Enhance productivity, and reduce because the environmental pollution that heat exchanger leakage causes etc. have good social benefit.
Description of drawings
Fig. 1 is the structure chart of the EFT heat exchanger corrosion-inhibiting coating of the utility model.
The specific embodiment
The EFT heat exchanger corrosion-inhibiting coating structure of the utility model is as shown in Figure 1, and heat exchanger tube body 1 surface scribbles corrosion-inhibiting coating 2, and corrosion-inhibiting coating 2 is EFT corrosion-inhibiting coating or EFT corrosion-inhibiting coating and zincizing alloy mixed coating.
The atmospheric and vacuum distillation unit of oil refining enterprise contains H
2S, H
2S+HCl+H
2The H2S+NH2+CO2+H2O temperature that O, aphthenic acids (RCOOH), catalytic unit, coking plant contain H2S+HCN+H2O, regenerating section is less than 120 ℃, and temperature T≤250 ℃ high temperature vulcanized hydrogen-type corrosion environment, still 340 ℃＜T＜400 ℃ high temperature S, H
2Corrosive environment, the EFT coating all has good anti-corrosion, the low temperature resistant H that it is excellent
2S, SO
2, NH
3, NH
2-Under the situation that the low content chlorion exists, corrosion resistance is greater than common Austenitic stainless steel pipe bundle.The heat exchanger that equally also is applicable to ethylene cracker cracking gas system for these reasons is anticorrosion.In particular for the water cooler tube bank of seawater, Zhong Shui, circulation, to adopt the EFT coating to carry out Combined Protection and carry out long-effective corrosion, its service life, real traditional corrosion-inhibiting coating was more than 1 times.The special-purpose heat exchanger corrosion-inhibiting coating of EFT is used for the simple steel heat exchanger tube bank, 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 have certain safeguard function.
The EFT coating has stable corrosion resisting property, and especially excellent in water resistance, permeability resistance, EFT corrosion-inhibiting coating can improve water cooler service life more than one times; The EFT coating has anti-300 ℃ heat-resisting property, can anti-steam blowing; Flexible excellent, have anti-deformation, improve its fragility; EFT coating and zincizing alloy (ZAFT) Combined Protection are anticorrosion, can improve service life more than 3 times, and the heat exchanger use cost can drop to original 60%; The EFT coating 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.
Its processing technology is following: the blasting treatment of (1) heat exchanger inwall surface of bottom material reaches GB8923-88 standard Sa2.5 level, can adopt filling, pouring, dip-coating.If sensation viscosity is excessive, can suitably add this lacquer special diluting agent during construction.(2) coating is solidified: take FAR INFRARED HEATING stove baking and curing to be undertaken by technical requirement.The cathodic protection that its bobbin carriage of the anticorrosion back of water cooler, floating head water side should be aided with sacrificial anode is for best.
Claims (2)
1.EFT the heat exchanger corrosion-inhibiting coating is characterized in that: heat exchanger tube body (1) surface scribbles corrosion-inhibiting coating (2).
2. EFT heat exchanger corrosion-inhibiting coating according to claim 1 is characterized in that: said corrosion-inhibiting coating (2) is EFT corrosion-inhibiting coating or EFT corrosion-inhibiting coating and zincizing alloy mixed coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220276261 CN202630783U (en) | 2012-06-13 | 2012-06-13 | Corrosion-resistant coating for EFT heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220276261 CN202630783U (en) | 2012-06-13 | 2012-06-13 | Corrosion-resistant coating for EFT heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202630783U true CN202630783U (en) | 2012-12-26 |
Family
ID=47383976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220276261 Expired - Lifetime CN202630783U (en) | 2012-06-13 | 2012-06-13 | Corrosion-resistant coating for EFT heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202630783U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289566A (en) * | 2013-06-20 | 2013-09-11 | 邹积强 | Internal and external EFT anticorrosion coating of cool exchanger |
-
2012
- 2012-06-13 CN CN 201220276261 patent/CN202630783U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289566A (en) * | 2013-06-20 | 2013-09-11 | 邹积强 | Internal and external EFT anticorrosion coating of cool exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102977901A (en) | Coke furnace rising pipe waste heat recovery device | |
| CN102003148A (en) | Oil casing pipe resisting CO2 corrosion and production method thereof | |
| CN107723598B (en) | A kind of hydrogen sulfide corrosion-resistant oil pipe and its production method improving fatigue behaviour | |
| CN202630783U (en) | Corrosion-resistant coating for EFT heat exchanger | |
| CN102409204A (en) | Rare earth (RE) aluminium alloy material for pressure vessels and pressure pipelines | |
| CN204313679U (en) | A kind of shell-and-tube heat exchanger | |
| CN103673690A (en) | Novel heat-proof and oil-proof floating head tube plate heat exchanger | |
| CN201837301U (en) | Sherardizing and flexible engineering urushiol phthalein anticorrosion coating | |
| Bott | General fouling problems | |
| CN103063079B (en) | Metal enamel heat transmission element and processing method thereof | |
| CN102829280A (en) | Compound expansion joint capable of resisting strong corrosive medium and preparation method | |
| CN204268952U (en) | Heat exchanger tube silicon aldehyde corrosion-inhibiting coating | |
| CN104136659B (en) | The surface treatment method of steel coating and heat-transfer pipe | |
| CN201763263U (en) | Anti-C02 corrosion oil casing | |
| CN203595434U (en) | Novel raw oil and normal pressure tower top oil-gas heat exchanger | |
| CN103673693A (en) | Novel crude oil normal-pressure tower top oil-gas heat exchanger | |
| CN203595435U (en) | Novel heat-proof and oil-proof floating head type tube-sheet exchanger | |
| CN107880751A (en) | A kind of preparation method of metal corrosion-resistant coating | |
| Qing | Processing high TAN crude: part I | |
| CN214699794U (en) | Anti-corrosion coating structure in pipeline | |
| CN203595426U (en) | Novel fractionating tower top oil and gas condensation cooler | |
| CN208667607U (en) | One kind being hydrocracked-isomerization dewaxing heat integration recycling system | |
| CN203396273U (en) | Anti-corrosion shell-and-tube heat exchanger | |
| CN201463701U (en) | Jacket for plate type heat exchanger | |
| CN109536856A (en) | A kind of seamless high pressure stainless steel oil pipe of minor diameter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170808 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: 116000 No. 39, Jixian street, Shahekou District, Liaoning, Dalian Patentee before: Zou Jiqiang |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |
|
| CX01 | Expiry of patent term |