CN110129808A - A kind of marine piping rust remover - Google Patents
A kind of marine piping rust remover Download PDFInfo
- Publication number
- CN110129808A CN110129808A CN201910341115.XA CN201910341115A CN110129808A CN 110129808 A CN110129808 A CN 110129808A CN 201910341115 A CN201910341115 A CN 201910341115A CN 110129808 A CN110129808 A CN 110129808A
- Authority
- CN
- China
- Prior art keywords
- parts
- rust remover
- pipeline
- acid
- marine piping
- 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.)
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Classifications
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F15/00—Other methods of preventing corrosion or incrustation
- C23F15/005—Inhibiting incrustation
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
Abstract
The present invention relates to derusting technical fields, disclose a kind of marine piping rust remover, the chemical composition of the rust remover is in parts by weight, comprising: 90-110 parts of acid of derusting, 12-18 parts of dodecenylsuccinic acid, 40-60 parts of petroleum sodium sulfonate, 14-28 parts of triethanolamine, 40-70 parts of chelating agent, 32-38 parts of inhibitor and 40-50 parts of pH adjusting agent.The phenomenon that by adding inhibitor in rust remover, preventing derusting acid from generating acid mist when dissolving the rusty scale of pipe surface, eliminating " hydrogen embrittlement " and also pH adjusting agent, to prevent derusting acid from continuing corrosion pipeline surface after dissolving rusty scale.
Description
Technical field
The present invention relates to derusting technical fields, more specifically, it relates to a kind of marine piping rust remover.
Background technique
Contain a large amount of pipe-line system in ship, pipeline is made of steel under normal circumstances, and pipe-line system a part position
In cabin.After pipeline in cabin corrodes, it can persistently to continue to get rusty inside pipeline, finally make pipeline can not
Normal use again.
Currently, the derusting method in marine piping mainly uses acid wash, traditional strong acid rust remover derusting effect is good, work
Skill is simple, at low cost, but belongs to country-level harmful influence using sulfuric acid, hydrochloric acid, nitric acid etc., and corrosivity is strong, and pipeline returns rust seriously,
And derust during easily generate acid mist, greatly affected the safety of pipeline itself, the health of operator and
Surrounding enviroment.In order to enable pipeline can be used normally, designing a kind of rust remover using safe marine piping is very
It is necessary to.
Summary of the invention
The purpose of the present invention is to provide a kind of marine piping rust removers, prevent derusting acid in the rust of dissolution pipe surface
The phenomenon that generating acid mist when layer, eliminate " hydrogen embrittlement ", and it is also added with pH adjusting agent, to prevent derusting acid from will become rusty
Continue corrosion pipeline surface after layer dissolution.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of marine piping rust remover, the chemical composition of the rust remover is in parts by weight, comprising: derusting acid 90-110
Part, inhibits 12-18 parts of dodecenylsuccinic acid, 40-60 parts of petroleum sodium sulfonate, 14-28 parts of triethanolamine, 40-70 parts of chelating agent
32-38 parts of agent and 40-50 parts of pH adjusting agent.
Rust on pipeline is generally iron rust, and iron rust is the mixture of the oxide of iron, hydroxide and moisture.Steel dissolution
Generally do not occur to only occur in anode in cathode, will form loose dispersion, non-uniform iron rust, this iron rust and moisture and
The further erosion damage steel of gas.And added with derusting acid in rust remover of the invention, by using acid, so that pipe surface
Iron rust be dissolved, fall off thus convenient from pipe surface.The chelation and Fe of chelating agent, triethanolamine2+、Fe3+Match
Position reaction, to generate stable complex, so that iron rust layer falls off from surface of steel plate, is finally reached the purpose of derusting.Pass through
Inhibitor is added in rust remover, is prevented derusting acid from generating acid mist when dissolving the rusty scale of pipe surface, is eliminated " hydrogen
It is crisp " the phenomenon that and there are also pH adjusting agent, to prevent derusting acid from continuing corrosion pipeline surface after dissolving rusty scale.
As a further improvement of the present invention, the chemical composition of the rust remover is in parts by weight, comprising: hydrochloric acid 50-70
Part, 20-25 parts of oxalic acid, 12-18 parts of dodecenylsuccinic acid, 40-60 parts of petroleum sodium sulfonate, 14-28 parts of triethanolamine, chelating agent
40-70 parts, 32-38 parts of inhibitor and 40-50 parts of pH adjusting agent.
Hydrochloric acid belongs to the strong acid in inorganic acid, can accelerate the dissolution of pipe surface rusty scale, to accelerate the rate of derusting.
By adding oxalic acid, " hydrogen embrittlement " phenomenon is avoided the occurrence of, so that protective conduit is further by hcl corrosion.Dodecenylsuccinic acid
In contain carbon-carbon double bond, the sulfonate radical in petroleum sodium sulfonate belongs to electron-withdrawing group.Carboxyl belongs to suction in dodecenylsuccinic acid
Electron group, and carbon-carbon double bond therein, under the action of two carboxyls, the electronics on carbon-carbon double bond shifts, at this time petroleum
The electrophilic ability of sulfonate radical in sodium sulfonate is better than the electrophilic ability of carboxyl, and sulfonate radical is not only on petroleum sodium sulfonate
Electronics have active force, and also have active force to the electronics in dodecenylsuccinic acid.When hydrochloric acid and oxalic acid are by pipe surface
Rusty scale remove after, dodecenylsuccinic acid and petroleum sodium sulfonate combined under intermolecular active force it is stronger,
Dodecenylsuccinic acid can be attached to petroleum sodium sulfonate and be attached to metal surface, form effective antirust coat, enable to pipe
Road surface will not get rusty again for a long time.
As a further improvement of the present invention, the chelating agent is hydroxyethyl ethylenediamine.
By using above-mentioned technical proposal, hydroxyethyl ethylenediamine itself has alkalinity, can prevent the acid mistake of rust remover
Corrosion pipeline by force.On the other hand, hydroxyethyl ethylenediamine enables to free Fe2+、Fe3+It reduces, the Fe constantly generated is complexed2 +、Fe3+, so that the concentration decline of hydrochloric acid is slowly, guarantees that the hydride of iron can quickly be reacted with hydrochloric acid, be finally reached efficiently
The purpose of derusting.
As a further improvement of the present invention, inhibitor is methenamine.
By using above-mentioned technical proposal, methenamine can reduce pipe surface and further corrode, and can subtract
The solution loss of few metal, while the roughening and pitting of metal surface can be prevented.Methenamine can also cooperate with oxalic acid, more
What is added prevents " hydrogen embrittlement " from generating and inhibiting the generation of acid mist.
A kind of technique for applying of marine piping rust remover, includes the following steps:
S1: addition rust remover；Rust remover is directly added into pipeline；
S2: derusting is impregnated；It will be placed for 24 hours by S1 treated seal for pipe joints；
S3: rear cleaning；By by all liq discharge in S2 treated pipeline, clear water is then filled into pipeline,
Antirust agent and antisludging agent are finally added into the pipeline full of clear water；
Pipeline after post-processing by S3 is then removed the rusty scale of pipe surface clean.
By using above-mentioned technical proposal, due to just containing water originally in marine piping, so directly addition rust remover is
It can.Water energy in one side pipeline enough plays the role of diluting rust remover, and rust remover is enabled to reach scheduled concentration；It is another
Aspect reduces the time required for dilution rust remover, accelerates the process of derusting.For 24 hours by seal for pipe joints, enable rust remover
It is enough adequately adequately to be contacted with the rusty scale in inner wall of the pipe, fully reacting.Clear water is finally full of into pipeline, and to pipeline
Interior addition antirust agent and antisludging agent, so that the time of antirust extends in inner wall of the pipe.
As a further improvement of the present invention, the mass ratio of the additive amount of rust remover and water is 1:19 in the S1.
As a further improvement of the present invention, when rust remover adds in the S1, the temperature of rust remover is first warming up to 50-
60 DEG C, then rust remover is added in pipeline again.
By using above-mentioned technical proposal, after rust remover is heated up, then it is added to pipeline, it is mixed with the water in pipeline
It closes, so that the temperature of the whole system in pipeline increases, so that the reaction energy of each substance increases in rust remover, thus plus
The fast speed of derusting.
As a further improvement of the present invention, after the S2 is processed, first all liq in pipeline is all drained, so
Clear water repeated flushing pipeline is used afterwards, continues 1-2h.
By using above-mentioned technical proposal, the rusty scale in inner wall of the pipe can be removed completely, then by the water in pipeline
It is discharged, the also common discharge therewith of the rusty scale in inner wall of the pipe, and reuses clear water flushing, the liquid residual before preventing.
As a further improvement of the present invention, the pH adjusting agent is sodium acetate.
Sodium acetate generally exists in the form of band is there are three the sodium acetate trihydrate of the crystallization water, can hydrolyze in water, thus
So that the pH of whole system is more stable, the amount added by control sodium acetate, so that the pH3-4 of whole system, before use
By dilution, to prevent derusting acid from continuing corrosion pipeline surface after dissolving rusty scale.
In conclusion the advantages of the present invention are:
1, by adding inhibitor in rust remover, prevent derusting acid from generating acid when dissolving the rusty scale of pipe surface
Mist, the phenomenon that eliminating " hydrogen embrittlement " and there are also pH adjusting agents, to prevent derusting acid from continuing to corrode after dissolving rusty scale
Pipe surface；
2, by being passed through water in pipeline after the completion of derusting, and antirust agent and antisludging agent are added in water, thus
So that the time of antirust extends in inner wall of the pipe.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of the technique for applying of marine piping rust remover of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, present invention is further described in detail.
Embodiment 1:
A kind of marine piping rust remover, chemical composition include: 60 parts of hydrochloric acid, 23 parts of oxalic acid, 12 in parts by weight
15 parts of alkenyl succinic acid, 50 parts of petroleum sodium sulfonate, 21 parts of triethanolamine, 55 parts of hydroxyethyl ethylenediamine, 35 parts of methenamine and
45 parts of sodium acetate.
According to the above-mentioned each raw material of certain part by weight weighing.Then first hydrochloric acid, oxalic acid, methenamine are added to reaction kettle
In, 50 DEG C are warming up to, dodecenylsuccinic acid, petroleum sodium sulfonate, triethanolamine and ethoxy second are then added while stirring
Diamines stirs 1h with the speed of 450rmp, finally sodium acetate is added into above-mentioned liquid system, so that model of the pH in 3-4
In enclosing.Rust remover preparation at this time finishes.
Referring to Fig.1, a kind of technique for applying of marine piping rust remover, includes the following steps:
S1: addition rust remover.Rust remover is directly added into pipeline, and the matter of the water in the additive amount and pipeline of rust remover
Amount is than being 1:19；When addition, rust remover is warming up to 55 DEG C, then rust remover is added again.
S2: derusting is impregnated.S1 treated seal for pipe joints is placed for 24 hours, rust remover is then added；Then by seal for pipe joints
It places for 24 hours.Then first the liquid containing rust remover is drained, then pipeline is rinsed using clear water, continue 1.5h.
S3: rear cleaning.By by all liq discharge in S2 treated pipeline, finally into pipeline full of clear water
Addition antirust agent and antisludging agent in pipeline, wherein antirust agent is selected in the Chinese patent that Authorization Notice No. is CN106086840B
Water-based antirust obtained in embodiment 1；Antisludging agent selects Authorization Notice No. by remembering in the Chinese patent of CN106699598B
The water soluble disperse antisludging agent of load.Finally, the rusty scale of pipe surface is cleaned.
Embodiment 2- embodiment 5 the difference from embodiment 1 is that, the chemical composition of rust remover is in parts by weight such as following table institute
Show；Unit: part
| Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Hydrochloric acid | 50 | 70 | 55 | 65 |
| Oxalic acid | 20 | 25 | 22 | 24 |
| Dodecenylsuccinic acid | 12 | 18 | 13 | 17 |
| Petroleum sodium sulfonate | 40 | 60 | 45 | 55 |
| Triethanolamine | 14 | 28 | 18 | 25 |
| Hydroxyethyl ethylenediamine | 40 | 70 | 48 | 62 |
| Methenamine | 32 | 38 | 33 | 37 |
| Sodium acetate | 40 | 50 | 43 | 48 |
Comparative example 1: the difference from embodiment 1 is that, the oxalic acid in rust remover is changed to dilute sulfuric acid.
Comparative example 2: the difference from embodiment 1 is that, without dodecenylsuccinic acid, petroleum sodium sulfonate and three in rust remover
Ethanol amine.
Comparative example 3: the difference from embodiment 1 is that, without hydroxyethyl ethylenediamine in rust remover.
Comparative example 4: the difference from embodiment 1 is that, without methenamine in rust remover.
Derusting effect detection and analysis:
Test: the rust remover in comparative example 1, comparative example 2, comparative example 3, comparative example 4 and embodiment 1 is taken, and is used
Documented technique for applying in embodiment 1, measures derusting effect respectively, and record case is as shown in the table:
| Sample | It volatilizees the time | It derusts the time | The secondary corrosion time |
| Comparative example 1 | 8min | 6min | 35 days |
| Comparative example 2 | 20min | 8min | 36 days |
| Comparative example 3 | 21min | 15min | 53 days |
| Comparative example 4 | 10min | 14min | 47 days |
| Embodiment 1 | 25min | 7min | 73 days |
Interpretation of result:
In conjunction with upper table, it can obtain and be derusted using the rust remover recorded in embodiment 1 to pipeline, first in embodiment 1
The volatilization time of the rust remover of record itself is longer, to avoid generating very strong acid mist in use.Secondly, itself has
The used time derusted for the first time it is very short, it is close with the time for using traditional strong acid to clean.Finally, from after first derusting to second
The time of secondary corrosion midfeather is longer, so that the rust remover for illustrating that the present invention records enables to pipeline in a long time will not
Occurs the case where corrosion again.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of marine piping rust remover, it is characterised in that: the chemical composition of the rust remover is in parts by weight, comprising: removes
Become rusty 90-110 parts of acid, 12-18 parts of dodecenylsuccinic acid, 40-60 parts of petroleum sodium sulfonate, 14-28 parts of triethanolamine, chelating agent
40-70 parts, 32-38 parts of inhibitor and 40-50 parts of pH adjusting agent.
2. a kind of marine piping rust remover according to claim 1, it is characterised in that: the chemical composition of the rust remover
In parts by weight, comprising: 50-70 parts of hydrochloric acid, 20-25 parts of oxalic acid, 12-18 parts of dodecenylsuccinic acid, petroleum sodium sulfonate 40-60
Part, 14-28 parts of triethanolamine, 40-70 parts of chelating agent, 32-38 parts of inhibitor and 40-50 parts of pH adjusting agent.
3. a kind of marine piping rust remover according to claim 2, it is characterised in that: the chelating agent is ethoxy second
Diamines.
4. a kind of marine piping rust remover according to claim 2, it is characterised in that: inhibitor is methenamine.
5. a kind of a kind of technique for applying of marine piping rust remover according to claim 1, it is characterised in that: including such as
Lower step:
S1: addition rust remover；Rust remover is directly added into pipeline；
S2: derusting is impregnated；It will be placed for 24 hours by S1 treated seal for pipe joints；
S3: rear cleaning；By by all liq discharge in S2 treated pipeline, clear water is then filled into pipeline, finally
Antirust agent and antisludging agent are added into the pipeline full of clear water；
Pipeline after post-processing by S3 is then removed the rusty scale of pipe surface clean.
6. a kind of marine piping rust remover according to claim 5, it is characterised in that: the addition of rust remover in the S1
The mass ratio of amount and water is 1:19.
7. a kind of marine piping rust remover according to claim 5, it is characterised in that: rust remover adds in the S1
When, the temperature of rust remover is first warming up to 50-60 DEG C, then rust remover is added in pipeline again.
8. a kind of marine piping rust remover according to claim 5, it is characterised in that: after the S2 is processed, first will
All liq in pipeline all drains, and then uses clear water repeated flushing pipeline, continues 1-2h.
9. a kind of marine piping rust remover according to claim 1, it is characterised in that: the pH adjusting agent is acetic acid
Sodium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341115.XA CN110129808A (en) | 2019-04-25 | 2019-04-25 | A kind of marine piping rust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341115.XA CN110129808A (en) | 2019-04-25 | 2019-04-25 | A kind of marine piping rust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110129808A true CN110129808A (en) | 2019-08-16 |
Family
ID=67571021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910341115.XA Pending CN110129808A (en) | 2019-04-25 | 2019-04-25 | A kind of marine piping rust remover |
Country Status (1)
| Country | Link |
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| CN (1) | CN110129808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112522719A (en) * | 2020-11-12 | 2021-03-19 | 仙桃市环美化工有限公司 | Fog-inhibiting rust remover and preparation method thereof |
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| CN104451698A (en) * | 2014-11-14 | 2015-03-25 | 无锡信大气象传感网科技有限公司 | Metal rust inhibitor for transformer and preparation method of metal rust inhibitor |
| CN107254683A (en) * | 2017-07-03 | 2017-10-17 | 无锡市福吉电子科技有限公司 | The strength rust remover and its application method of a kind of steelwork |
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2019
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Patent Citations (6)
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|---|---|---|---|---|
| CN1536060A (en) * | 2003-04-07 | 2004-10-13 | 章志伟 | Multifunctonal degreasing rust-removing cleaning agent and its preparaton method |
| CN101654785A (en) * | 2009-07-03 | 2010-02-24 | 江苏海迅实业集团股份有限公司 | Steel surface compact oxide layer scavenging agent |
| CN102260875A (en) * | 2010-05-29 | 2011-11-30 | 郭方全 | Environment friendly oil and rust removing agent for steels |
| CN104312657A (en) * | 2014-10-29 | 2015-01-28 | 合肥市华阳工程机械有限公司 | Anti-rust oil for auto parts and preparation method thereof |
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| CN112522719A (en) * | 2020-11-12 | 2021-03-19 | 仙桃市环美化工有限公司 | Fog-inhibiting rust remover and preparation method thereof |
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