CN104611691B - A kind of organic passivation agent and its application process for carbon steel piping or carbon steel pipe fitting - Google Patents
A kind of organic passivation agent and its application process for carbon steel piping or carbon steel pipe fitting Download PDFInfo
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- CN104611691B CN104611691B CN201510058957.6A CN201510058957A CN104611691B CN 104611691 B CN104611691 B CN 104611691B CN 201510058957 A CN201510058957 A CN 201510058957A CN 104611691 B CN104611691 B CN 104611691B
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- carbon steel
- organic passivation
- pipe fitting
- passivation agent
- piping
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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
- C23C22/05—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 using aqueous solutions
- C23C22/60—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 using aqueous solutions using alkaline aqueous solutions with pH greater than 8
- C23C22/62—Treatment of iron or alloys based thereon
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- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a kind of organic passivation agent for carbon steel piping or carbon steel pipe fitting, it is prepared from by castor oil acid, water and MEA and/or diethanol amine and/or triethanolamine, to be placed in stainless steel tank after the organic passivation agent demineralized water dilution, the passivator solution in stainless steel tank is heated using the method for forced circulation, then will be immersed in stainless steel tank in solution after a period of time through carbon steel piping that acid pickling and rust removing is processed or carbon steel pipe fitting, you can form organic passivation film in carbon steel piping and carbon steel tube surface.Compared with prior art, the advantage of organic passivation agent of the present invention is environmental protection, without carcinogen natrium nitrosum, can be with safety dumping, good passivation effect after waste liquid is neutralized.
Description
Technical field
The invention belongs to the preparing technical field of industrial cleaning agent product, is related to one kind for carbon steel piping or carbon steel pipe fitting
Organic passivation agent and its application process.
Background technology
Passivator is to make preparation of the metal surface in passive state, and it can be made Jing after chlorohydric acid pickling or sulfamic acid pickling
The products such as carbon steel piping, carbon steel pipe fitting or rectifying column form one layer in its highly active metal surface and can prevent metal oxidation reaction
Organic film, so as to improve its corrosion stability, increase product attractive in appearance.At present passivator known to industry cleaning link industry be ammoniacal liquor with
The mixed solution of natrium nitrosum, or with metallic salts such as chromic acid, nitric acid, sulfuric acid as main component, as natrium nitrosum is
Carcinogen, has larger harm to the body of operating personnel, and the passivating solution of industry cleaning link industry mostly neutralization at present is arrived
PH=7 is directly discharged, and substantial amounts of natrium nitrosum is directly discharged in environment, and the natrium nitrosum contained in water is after people and animals drink
Can be enriched in a large number in personnel or animal body, ultimately result in the generation of various strange illnesses；And the metallic salt such as chromic acid, nitric acid, sulfuric acid
Containing plurality of heavy metal ion, the discharge of passivating solution waste water also can cause serious pollution to environment.
The content of the invention
It is an object of the invention to solve to the problem that prior art is present, there is provided a kind of raw material sources environmental protection
The organic passivation agent for carbon steel piping or carbon steel pipe fitting.
The technical solution for adopting for achieving the above object is as described below.
A kind of organic passivation agent for carbon steel piping or carbon steel pipe fitting, it is characterised in that：The organic passivation agent is by following
The raw material of substance composition of percentage by weight：
Castor oil acid 20～30%,
MEA and/or diethanol amine and/or triethanolamine 20～40%,
Remaining is water.
In the constitutive material of above-mentioned passivator, castor oil acid (C18H34O3) effect be to be formed hydrophobic to have in metal surface
Machine passivating film；The effect of MEA or diethanol amine or triethanolamine is neutralization castor oil acid for adjusting pH, and passes through N atom P
The lone pair electrons of track form p-d conjugation with the d tracks of metal iron atom, play a part of collaboration passivation.
The preparation method of the organic passivation agent is：It is first that castor oil acid is soluble in water, then with MEA and/or diethyl
Hydramine and/or triethanolamine are neutralized, adjust pH be 8～9, packaging product.
Using the organic passivation agent to the method that carbon steel piping or carbon steel pipe fitting are passivated process it is：By the organic passivation
Agent demineralized water is placed in one after diluting 30～50 times and is configured with the stainless steel tank of heat exchanger and circulating pump, using forced circulation
Method the passivator solution in stainless steel tank is heated to into 80 DEG C～90 DEG C and the temperature is maintained, then will through hydrochloric acid or
The carbon steel piping or carbon steel pipe fitting of sulfamic acid acid pickling and rust removing process is immersed in stainless steel tank 10～60min in solution, pulls out
Carbon steel piping or pipe fitting, pure water punching are dry, are dried, i.e., form organic passivation film in carbon steel piping or carbon steel tube surface.
Compared with prior art, the advantage of organic passivation agent of the present invention is environmental protection, without carcinogen nitrous
Sour sodium, can be with safety dumping, good passivation effect after waste liquid is neutralized.
Specific embodiment
Embodiment 1
Castor oil acid 200g being weighed, being dissolved in 500mL water, the pH for then solution being adjusted with MEA 300g is 8,
Product.Will this product demineralized water dilute after be configured to 10% the aqueous solution, solution is placed in into one and is configured with heat exchanger and is followed
In 15 meters of the length of ring pump, wide 2 meters, high 1 meter of stainless steel tank, will be the passivator in stainless steel tank molten using the method for forced circulation
Liquid is heated to 80 DEG C and maintains the temperature, and the carbon steel piping processed through acid pickling and rust removing is immersed in solution in stainless steel tank then
Middle 30min, pulls carbon steel piping out, and pure water punching is dry, is dried, afterwards according to carbon in GB/T25149-2010 industrial equipment Chemical cleanings
It is that (Standard is 30s not less than 5s that the method for testing of steel Chromating Film On Zn Deposits determine red liquid to be changed into the red time from blueness
It is qualified).Reference as a comparison, takes the sodium nitrite passivation agent of commercially available 1%, and it is 10 to adjust pH with ammoniacal liquor, at 30 DEG C of room temperature
Passivation 2h, determines red liquid according to the method for testing of GB/T25149-2010 industrial equipment Chemical cleaning medium carbon steel Chromating Film On Zn Deposits
It is 4s to be changed into the red time from blueness, and Chromating Film On Zn Deposits are poor, still unqualified.
Embodiment 2
Castor oil acid 300g being weighed, being dissolved in 400mL water, the pH for then solution being adjusted with diethanol amine 300g is 9,
Product.By the using method of embodiment 1, the aqueous solution that this product is configured to 10% is taken, by the carbon steel through pickling at 80 DEG C
Pipeline is passivated 30min, after being dried, according to the test of GB/T25149-2010 industrial equipment Chemical cleaning medium carbon steel Chromating Film On Zn Deposits
It is 22s that method determines red liquid from the time that blueness is changed into redness (Standard is qualified not less than 5s).Reference as a comparison,
The sodium nitrite passivation agent of commercially available 3% is taken, and it is 11 pH to be adjusted with ammoniacal liquor, is passivated 2h, according to GB/ at 30 DEG C of room temperature
The method of testing of T25149-2010 industrial equipment Chemical cleaning medium carbon steel Chromating Film On Zn Deposits determines red liquid and is changed into red from blueness
Time be 6s, Chromating Film On Zn Deposits are qualified, but compared to organic passivation film of the present invention, its using effect still compared with
Difference.
Embodiment 3
Castor oil acid 300g being weighed, being dissolved in 500mL water, the pH for then solution being adjusted with triethanolamine 300g is 8.5, i.e.,
Into product.By the using method of embodiment 1, the aqueous solution that this product is configured to 10% is taken, by the carbon through pickling at 80 DEG C
Steel conduit is passivated 30min, after being dried, according to the survey of GB/T25149-2010 industrial equipment Chemical cleaning medium carbon steel Chromating Film On Zn Deposits
It is 10s that method for testing determines red liquid from the time that blueness is changed into redness (Standard is qualified not less than 5s).Join as a comparison
According to, the sodium nitrite passivation agent of commercially available 3% is taken, it is 11 to adjust pH with ammoniacal liquor, is passivated 2h, according to GB/ at 30 DEG C of room temperature
The method of testing of T25149-2010 industrial equipment Chemical cleaning medium carbon steel Chromating Film On Zn Deposits determines red liquid and is changed into red from blueness
Time be 6s, Chromating Film On Zn Deposits are qualified, but compared to organic passivation film of the present invention, its using effect still compared with
Difference.
Embodiment 4
Castor oil acid 300g is weighed, is dissolved in 500mL water, then adjust molten with MEA 200g and diethanol amine 100g
The 8 of liquid, product.By the using method of embodiment 1, the aqueous solution that this product is configured to 10% is taken, will be passed through at 80 DEG C
The carbon steel piping passivation 30min of pickling, after being dried, according to GB/T25149-2010 industrial equipment Chemical cleaning medium carbon steel passivating films
It is 25s that the method for testing of quality determines red liquid from the time that blueness is changed into redness (Standard is qualified not less than 5s).Make
To contrast reference, the sodium nitrite passivation agent of commercially available 3% is taken, it is 11 pH to be adjusted with ammoniacal liquor, is passivated 2h, presses at 30 DEG C of room temperature
Red liquid is determined by blue change according to the method for testing of GB/T25149-2010 industrial equipment Chemical cleaning medium carbon steel Chromating Film On Zn Deposits
It is 7s for the red time, Chromating Film On Zn Deposits are qualified, but compared to organic passivation film of the present invention, its using effect is still
It is so poor.
Embodiment 5
Castor oil acid 300g is weighed, is dissolved in 500mL water, then with MEA 100g, diethanol amine 80g and three ethanol
Amine 100g adjust solution pH be 9, product.By the using method of embodiment 1, take this product be configured to 10% it is water-soluble
Liquid, by the carbon steel piping passivation 30min through pickling at 80 DEG C, after being dried, according to GB/T25149-2010 industrial equipments
It is 15s (Standards that the method for testing of cleaning medium carbon steel Chromating Film On Zn Deposits determines red liquid from the time that blueness is changed into redness
It is qualified not less than 5s).Reference as a comparison, takes the sodium nitrite passivation agent of commercially available 10%, and it is 11 to adjust pH with ammoniacal liquor,
2h is passivated at 30 DEG C of room temperature, according to the method for testing of GB/T25149-2010 industrial equipment Chemical cleaning medium carbon steel Chromating Film On Zn Deposits
Determine red liquid to be changed into the red time from blueness is 8s, and Chromating Film On Zn Deposits are qualified, Chromating Film On Zn Deposits preferably, but compared to this
The described organic passivation film of invention, its using effect are still poor.
Claims (2)
1. a kind of organic passivation agent for carbon steel piping or carbon steel pipe fitting, it is characterised in that：The organic passivation agent is by following heavy
The raw material of substance composition of amount percentage：
Castor oil acid 20～30%,
MEA and/or diethanol amine and/or triethanolamine 20～40%,
Remaining is water；
The preparation method of the organic passivation agent is：It is first that castor oil acid is soluble in water, then with MEA and/or diethanol amine
And/or triethanolamine is neutralized, adjust pH be 8～9, packaging product.
2. the method that organic passivation agent described in a kind of utilization claim 1 is passivated process to carbon steel piping or carbon steel pipe fitting,
It is characterized in that：One is placed in after described organic passivation agent demineralized water is diluted 30～50 times and is configured with heat exchanger and circulation
In the stainless steel tank of pump, the passivator solution in stainless steel tank is heated to into 80 DEG C～90 DEG C using the method for forced circulation and is tieed up
The temperature is held, then the carbon steel piping processed through hydrochloric acid or sulfamic acid acid pickling and rust removing or carbon steel pipe fitting is immersed in stainless
10～60min in solution in steel tank, pulls carbon steel piping or carbon steel pipe fitting out, and pure water punching is dry, is dried, i.e., in carbon steel piping or carbon steel
Tube surface forms organic passivation film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058957.6A CN104611691B (en) | 2015-02-05 | 2015-02-05 | A kind of organic passivation agent and its application process for carbon steel piping or carbon steel pipe fitting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058957.6A CN104611691B (en) | 2015-02-05 | 2015-02-05 | A kind of organic passivation agent and its application process for carbon steel piping or carbon steel pipe fitting |
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| CN104611691A CN104611691A (en) | 2015-05-13 |
| CN104611691B true CN104611691B (en) | 2017-03-29 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212833A (en) * | 2010-07-26 | 2011-10-12 | 山东泰丰清洗科技有限公司 | Neutral rust removing detergent |
| CN103554409A (en) * | 2013-10-21 | 2014-02-05 | 北京金汇利应用化工制品有限公司 | Water-based anticorrosive resin and preparation method thereof |
-
2015
- 2015-02-05 CN CN201510058957.6A patent/CN104611691B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212833A (en) * | 2010-07-26 | 2011-10-12 | 山东泰丰清洗科技有限公司 | Neutral rust removing detergent |
| CN103554409A (en) * | 2013-10-21 | 2014-02-05 | 北京金汇利应用化工制品有限公司 | Water-based anticorrosive resin and preparation method thereof |
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| CN104611691A (en) | 2015-05-13 |
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Effective date of registration: 20190628 Address after: 710339 Eastern Section of Fengwu Road, Fengjing Industrial Park, Zhaoyi District, Xi'an City, Shaanxi Province Patentee after: Shaanxi Kaili Chemical Co., Ltd. Address before: 710065 Unit 1620, Building I-Metropolitan 1, No. 11 Tangyan Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: SHAANXI KELLY CLEANING CO., LTD. |
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