CN1031723A - The outer and inner walls of steel pipe bundle aseptic technic - Google Patents
The outer and inner walls of steel pipe bundle aseptic technic Download PDFInfo
- Publication number
- CN1031723A CN1031723A CN 88103519 CN88103519A CN1031723A CN 1031723 A CN1031723 A CN 1031723A CN 88103519 CN88103519 CN 88103519 CN 88103519 A CN88103519 A CN 88103519A CN 1031723 A CN1031723 A CN 1031723A
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- CN
- China
- Prior art keywords
- coating
- tube bank
- aseptic technic
- chemical
- outside wall
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The outer and inner walls of steel pipe bundle aseptic technic belongs to the anti-corrosion of metal New Process for Treatment.The large and complex structure equipment tube bank inside and outside wall that has solved industries such as oil, chemical industry, boiler can both thoroughly be realized antiseptic technical problem to various corrosive mediums.Make the tube bank inside and outside wall at first form phosphate coating by means of utility appliance, then according to different medium requirements, different temperature requirements is selected the characteristic paint spraying of different physics, chemical property for use.The mechanism of this anti-corrosion technology is that formed phosphate coating and matrix steel are Chemical bond.The inside and outside wall of metals such as water cooler, interchanger tube bank that is applicable to industries such as oil, chemical industry, boiler is anticorrosion.
Description
The outer and inner walls of steel pipe bundle aseptic technic belongs to the anti-corrosion of metal New Process for Treatment.
Tube banks such as the water cooler of oil, chemical industry, interchanger now can only be used organic coating (epoxy novolac, 7910, CH784 etc.) application then to inwall through sandblast (or chemical treatment).Combine with adhesive power between the metal tube by coating, make the metallic surface form passive film.This rotproofing way coating and metal steel basal body binding force are poor, and application can see through trace water later, generate oxide compound with the metallic surface, the foaming of filming, and cracking comes off, the matrix corrosion; High-temperature resistant medium is below 150 ℃; Rotproofing is long in time limit.
In order to solve oil, chemical industry, the large and complex structure equipment tube bank inside and outside wall of industries such as boiler can both thoroughly be realized antiseptic needs at various corrosive mediums, has invented new aseptic technic.
Design of the present invention is: in the large and complex structure equipment tube bank inside and outside wall process sandblast of oil, chemical industry, after removing oxide skin, by pump, cut down, pipeline, solution tank make the tube bank inside and outside wall at first form phosphate coating according to the technical process join operation, then according to different medium requirements, different temperature requirements, characteristic coating (routine DVA or the T-12 etc.) application of selecting different physics, chemical property for use.The mechanism of this anti-corrosion technology is that formed phosphate coating and matrix steel are Chemical bond, and phosphate coating has very strong adsorption to coating, so coating and matrix steel have very firm bonding force.
Use the positively effect that aseptic technic of the present invention produces: 1) all can be anticorrosion to various high temperature cryogenic medias such as seawater (containing fresh water), oil (containing gasoline, diesel oil), water vapor, inorganic salt, organic acids, high-temperature resistant medium can reach 600 ℃.2) prolong oil, chemical industry cooling apparatus work-ing life more than ten times.3) avoided because of equipment corrosion causes leakage of oil, gas leakage reduces the loss that quality product and stop work and production caused.4) avoided the blast that may cause because of equipment corrosion, serious accidents such as fire take place.5) the softening processing can not done in boiler tube bundle not corrosion of tube wall after rotproofing, non-scaling, water.6) rotproofing duration weak point, cost is low.
Description of drawings: cooler tube inside and outside wall anticorrosion treatment technology schematic flow sheet.
Embodiment: with the cooler tube inwall routinely technology eliminate rust, after the sandblasting, with the utility appliance pump, cut down, pipeline, solution tank link according to process flow diagram.The anticorrosion process step is as follows: (1) pickling: pump discharge and tube side inlet G
1; Tube side outlet G
2Connect with sebific duct JG with the fairlead a of salt acid tank A.Open and cut down 1, cut down 2, (technical hydrochloric acid and water ratio were 1: 3 among the A in 30 minutes to open the pump circulation.Temperature 15-20 ℃), close and to cut down 2 and open and cut down 5, when treating among the A liquid level build-up, remove a place sebific duct to former liquid level, put water drain into and continue washing, to when checking the near neutrality of effluent liquid with the PH test paper only.(2) neutralization: close and to cut down 5 and open and cut down 3, provide 300 liters of alkali lye in the groove B (with sodium phosphate 50 grams per liters, sodium hydroxide 35 grams per liters, sodium laurylsulfonate 1-3 grams per liter ratio is made, temperature is 25-35 ℃), close and cut down 3 and open and cut down 5, treat to end when effluent liquid is neutrality.(3) phosphatization: close and to cut down 5 and open and cut down 6 and cut down 7, occur acidly with the inspection of PH test paper, move sebific duct with groove E fairlead e joins after promptly phosphatization liquid flows out, set up phosphatization and circulated 1 hour 30 minutes.(the phosphatization liquid in the groove E is with zinc nitrate 120 grams per liters, Mazhev salt 100 grams per liters, Sodium Fluoride 8 grams per liters, the ratio preparation of zinc oxide 6 grams per liters), the pass cuts down 6 and cut down 7, open and cut down 5 when treating among the E liquid level build-up, remove e place sebific duct and put water drain into, only be washed to when being neutrality with PH test paper inspection effluent liquid to former liquid level.Pull up cooler outlet G
2, inlet G
1Sebific duct, bleed off cold water in the tube side.(4) take water cooler two ends end socket F apart
1F
2; Use the flushing with clean water inside pipe wall, blow with pressurized air again.(5) oven dry: the water cooler shell side is exported K with sebific duct
1Join with vapour line.(6) application: load onto water cooler two ends end socket F
1F
2; The water cooler tube side of obturaging inlet G
1, by tube side outlet G
2Pour into coating (press DVA85%, aluminium powder 15% is made, and viscosity records 18-20 second with " B-4 viscometer "), coating content is a tube side volumetrical 2/3rds; Rotated water cooler 30 minutes, again with cooler bulkhead F
1F
2Take apart and pour out whole coating; At last by shell side outlet K
1Inlet K
2Supply simultaneously is no more than 80 ℃ steam, and continuous drying disposes.The difference that pipe outer wall rotproofing and inwall are handled is: (1) is with pump discharge in the schematic flow sheet and shell side inlet K
2Link shell side outlet K
1Link with required solution tank respectively.(2) use earlier electrochemical deoiling: alkali cleaning 45 minutes, alkali liquid temperature 70-90 ℃.(3) hot water wash after the alkali cleaning: open and cut down 4 washings more than 30 minutes, cold wash then, cold water is flow to by the shell side inlet, and outlet flows out to water drain, all bleeds off the water in the shell side then.(4) oven dry: exporting into by the water cooler tube side, steam carries out.Its technological process, principle, step, it is all identical with the inwall mode to fill a prescription.
Claims (3)
1, oil, the water cooler of industries such as chemical industry, heat exchange equipment tube bank inwall carries out anticorrosion with the organic coating application after sandblast (or chemical treatment) again, aseptic technic of the present invention is characterised in that: by pump, cut down, pipeline, utility appliance such as solution tank are anticorrosion to the tube bank inside and outside wall, at first form phosphate coating, again according to the different media requirement, the differing temps requirement, select different physics for use, the coating of chemical property (routine DVA or T-12 etc.) application, the mechanism of this anti-corrosion technology is that formed phosphate coating and matrix steel are Chemical bond, phosphate coating has very strong adsorption to coating, therefore, coating and matrix steel have firm bonding force.
2, aseptic technic as claimed in claim 1 is characterized in that the utility appliance pump, cuts down, pipeline, solution tank connect operation according to technical process with anticorrosion equipment.
3, aseptic technic as claimed in claim 1 is characterized in that the high-temperature resistant medium corrosion can reach 600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103519 CN1011911B (en) | 1988-06-08 | 1988-06-08 | Corrosion-resistant method for the outer and inner walls of steel pipe bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103519 CN1011911B (en) | 1988-06-08 | 1988-06-08 | Corrosion-resistant method for the outer and inner walls of steel pipe bundle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031723A true CN1031723A (en) | 1989-03-15 |
| CN1011911B CN1011911B (en) | 1991-03-06 |
Family
ID=4832643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103519 Expired CN1011911B (en) | 1988-06-08 | 1988-06-08 | Corrosion-resistant method for the outer and inner walls of steel pipe bundle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011911B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053232C (en) * | 1997-07-11 | 2000-06-07 | 许文庆 | Anticorrosive method for cold exchange equipment |
| CN1295031C (en) * | 2004-09-27 | 2007-01-17 | 大庆油田建设集团 | External anticorrusion layer opening mending method for polyethylene anti corrusion pipeline |
| CN1295032C (en) * | 2004-09-27 | 2007-01-17 | 大庆油田建设集团 | Insulating pipeline spray coating opening mending method |
| CN102605366A (en) * | 2012-03-20 | 2012-07-25 | 中科盛创（青岛）电气有限公司 | Antiseptic treatment system of water channel of water-cooling machine seat of motor and treatment method |
| CN102644832A (en) * | 2012-05-18 | 2012-08-22 | 濮阳市海林特种设备制造防护有限公司 | Protection/repairing technique for cooling system of compressor |
| CN102878360A (en) * | 2012-09-28 | 2013-01-16 | 天津盛象塑料管业有限公司 | Method for increasing steel-plastic cohesion for steel-framed plastic composite pipes |
| CN103727832A (en) * | 2013-12-09 | 2014-04-16 | 广东万和新电气股份有限公司 | Aluminum heat exchanger pipeline of which inner wall is provided with anticorrosive coating and processing method of aluminum heat exchanger pipeline |
| CN108057594A (en) * | 2017-10-31 | 2018-05-22 | 陕西恒威能源科技有限公司 | The preparation method of high corrosion-resistant gas pipeline |
| CN109402651A (en) * | 2018-11-06 | 2019-03-01 | 杭州杭氧化医工程有限公司 | A kind of jet chimney acid washing method |
| CN111207299A (en) * | 2020-01-08 | 2020-05-29 | 中国石油大学(北京) | Surface modification method for oil field gathering and transportation pipeline |
-
1988
- 1988-06-08 CN CN 88103519 patent/CN1011911B/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053232C (en) * | 1997-07-11 | 2000-06-07 | 许文庆 | Anticorrosive method for cold exchange equipment |
| CN1295031C (en) * | 2004-09-27 | 2007-01-17 | 大庆油田建设集团 | External anticorrusion layer opening mending method for polyethylene anti corrusion pipeline |
| CN1295032C (en) * | 2004-09-27 | 2007-01-17 | 大庆油田建设集团 | Insulating pipeline spray coating opening mending method |
| CN102605366A (en) * | 2012-03-20 | 2012-07-25 | 中科盛创（青岛）电气有限公司 | Antiseptic treatment system of water channel of water-cooling machine seat of motor and treatment method |
| CN102644832A (en) * | 2012-05-18 | 2012-08-22 | 濮阳市海林特种设备制造防护有限公司 | Protection/repairing technique for cooling system of compressor |
| CN102878360A (en) * | 2012-09-28 | 2013-01-16 | 天津盛象塑料管业有限公司 | Method for increasing steel-plastic cohesion for steel-framed plastic composite pipes |
| CN103727832A (en) * | 2013-12-09 | 2014-04-16 | 广东万和新电气股份有限公司 | Aluminum heat exchanger pipeline of which inner wall is provided with anticorrosive coating and processing method of aluminum heat exchanger pipeline |
| CN108057594A (en) * | 2017-10-31 | 2018-05-22 | 陕西恒威能源科技有限公司 | The preparation method of high corrosion-resistant gas pipeline |
| CN109402651A (en) * | 2018-11-06 | 2019-03-01 | 杭州杭氧化医工程有限公司 | A kind of jet chimney acid washing method |
| CN111207299A (en) * | 2020-01-08 | 2020-05-29 | 中国石油大学(北京) | Surface modification method for oil field gathering and transportation pipeline |
| CN111207299B (en) * | 2020-01-08 | 2021-08-06 | 中国石油大学(北京) | Surface modification method for oil field gathering and transportation pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1011911B (en) | 1991-03-06 |
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Decision date of declaring invalidation: 20090501 Decision number of declaring invalidation: 13261 Granted publication date: 19911002 |