CN102134723A - Neutral oil removing and rust removing agent - Google Patents
Neutral oil removing and rust removing agent Download PDFInfo
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- CN102134723A CN102134723A CN 201110032491 CN201110032491A CN102134723A CN 102134723 A CN102134723 A CN 102134723A CN 201110032491 CN201110032491 CN 201110032491 CN 201110032491 A CN201110032491 A CN 201110032491A CN 102134723 A CN102134723 A CN 102134723A
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- neutral oil
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Abstract
The invention relates to a neutral oil removing and rust removing agent which comprises the following components of 1-hydroxy ethylidene-1, 1-diphosphonic acid (HEDP), polyacrylic acid (PAA), caustic soda flasks (NaOH), benzotriazole, sodium sulfite, water and other auxiliaries, wherein the 1-hydroxy ethylidene-1, 1-diphosphonic acid (HEDP) accounts for 20-25% by mass of the neutral oil removing and rust removing agent, the polyacrylic acid (PAA) accounts for 15-20% by mass of the neutral oil removing and rust removing agent, the water accounts for 40-60% by mass of the neutral oil removing and rust removing agent, the caustic soda flasks (NaOH) account for 2-5% by mass of the neutral oil removing and rust removing agent, the benzotriazole account for 0.1-0.5% by mass of the neutral oil removing and rust removing agent, the sodium sulfite account for 1.5-2.5% by mass of the neutral oil removing and rust removing agent, and the other auxiliaries account for 2-15% by mass of the neutral oil removing and rust removing agent.
Description
Technical field
The present invention relates to a kind of clean-out system, be specifically related to a kind of neutral oil-removing rust-removing agent.
Background technology
Acid pickling and rust removing, alkali cleaning oil removing are the traditional ways of matting, and especially the pickling agent rust cleaning can be described as unique chemical rust removing mode at present, and is extensive use of in two big fields.
One, cleans before the driving of new device or system
Newly-built oil, chemical plant installations or piping system in order to produce economic benefit as soon as possible, and make equipment (device) safety and stability long-term operation, and the matting before all needing to drive is to remove intrasystem greasy dirt, manufacturings such as dust, accumulating, construction rubbish.Particularly need thoroughly eliminate in the matting before driving attached to impurity such as the greasy dirt of steel surface, iron rust, rolling scale, welding slag are even.
Traditional matting is to use alkaline cleaner oil removing degreasing under heated condition earlier, uses acidic cleaner (being pickling) to remove the iron rust of steel surface, rolling scale, welding slag etc. after the washing again, again through water flushing, operations such as rinsing, neutralization, passivation.Main shortcoming is: the uniform corrosion to equipment and materials is bigger, to the heavy contamination of environment.More fearful is cannot see, the two big danger that also can't check in a short time:
NaoH corroded the caustic embrittlement that austenitic stainless steel caused when 1, alkalescence was cleaned.
2, acidic cleaner hydrogen-type corrosion (comprising hydrogen embrittlement and hydrogen blistering) that non-austenitic stainless steel and carbon steel are produced when the pickling.
The accident that this two classes corrosive consequence all might make stainless steel and carbon steel material rupture suddenly in generation in service from now on.This is that any institute of producer with said apparatus or system is firmly unallowed.
For caustic embrittlement, existing a lot of the introduction no longer mentioned in the relevant magazine of hydrogen alkali industry.The H+ effect that hydrogen-type corrosion is based in the acidic medium causes.With the chlorohydric acid pickling is example:
When the HCl aqueous solution and Fe have an effect, generate two atomic hydrogens, run into a time-out when them and just generate a hydrogen molecule.HCl+Fe→FeCl
2+2H
The atomic hydrogen of status nascendi is very active; volume is also little; can spread from all directions in iron and steel or other metal (as copper) matrix inside and walk; can cause when it is stranded in material inside that lattice is twisted, when atom vacancy or other microdefect; just the ability that material is produced viscous deformation has under external force played " anchoring " effect, and promptly material can not slow down stress with the way of distortion, and material is become fragile; even fracture suddenly, the hydrogen embrittlement on Here it is the corrosion science destroys.When hydrogen atom is diffused into the pore of material internal, during macroscopic defectss such as slag inclusion, just stay in this place and build up into molecular hydrogen, at this moment volume just increases 20 times (be mutually because of two hydrogen atoms forming a hydrogen molecule 120 ° angle).Along with H
2Accumulation, the pressure at this macroscopic defects place just constantly increases, and forms stress value of reaching capacity of material internal and breaks.
Based on this, some high-tension apparatus, the equipment of interior dangerous medium, pipeline carries important medium (as lubricating oil, sealing oil, control oil, pressure medium liquid H
2, heavy water, high energy fuels etc.) pipeline all forbid pickling.Technical requirement must be cleaned before the device that has was driven, but did not allow to ooze hydrogen.
Two, the cleaning before the metal works surface treatment
In a lot of industries, as workpiece in the industries such as household electrical appliances, automobile, shipbuilding, machinery, electronics electroplate, dust, before anticorrosion or other surface treatment, pickling, alkali cleaning are traditional pre-treating technologies, also are unique matting modes.In sum, there is following shortcoming in present clean-out system:
1) must carry out matting before important system pipeline or device are driven in oil, chemical industry, power industry, but the traditional chemical cleaning adopts all acidity, alkaline cleaner as the main raw material that cleans.In pickling, the alkali cleaning cleaning, operator's safety problem, clean rate, the corrosion rate problem of cleaning back equipment, the environmental issue of bringing after cleaning, even at the water source deficient geographic problem of water saving etc. all can not get properly settling.
2) in a lot of industries, as workpiece in the industries such as household electrical appliances, automobile, shipbuilding, machinery, electronics electroplate, dust, before anticorrosion or other surface treatment, the matting traditional technology that also is absolutely necessary, the matting medicament also all adopts strong acid, strong basicity clean-out system.This type of workpiece requires relatively low to clean-out system corrosion rate etc., but because this arts demand uses strong acid and strong base throughout the year, and operator's life protection and environmental issue but seemed more outstanding.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, has proposed a kind of neutral oil-removing rust-removing agent, and described oil-removing rust-removing agent is the senior cleaning agent that ideal is suitable for carbon steel, low alloy steel, non-ferrous metal and carbon steel-stainless steel combined system.This clean-out system can all metallic surfaces of disposable removal dirt settling such as greasy dirt, solid particulate, can dissolve the iron rust of steel surface, rolling scale etc. for a full due, and the hydrogen phenomenon of oozing of the iron and steel that is safe from harm produces, system's degree of cleaning after the cleaning are that general matting is incomparable, and it is free from environmental pollution, compliance with environmental protection requirements is present state-of-the-art matting medicament, fills the domestic gaps.Equally, the neutral cleaning especially cooperates the auxiliary cleaning means of ultrasonic cleaning etc., is that pickling traditional before the metal works surface treatment, the ideal of alkali cleaning replace technology.
Technical scheme of the present invention is: neutral oil-removing rust-removing agent, by 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP, polyacrylic acid PAA, sheet alkali NaOH, benzotriazole, S-WAT, water and other auxiliary agents are formed, the composition proportioning of described neutral oil-removing rust-removing agent is: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP accounts for described neutral oil-removing rust-removing agent total mass per-cent 20-25%, polyacrylic acid PAA accounts for described neutral oil-removing rust-removing agent total mass per-cent 15-20%, water accounts for described neutral oil-removing rust-removing agent total mass per-cent 40-60%, sheet alkali NaOH accounts for described neutral oil-removing rust-removing agent total mass per-cent 2-5%, benzotriazole accounts for described neutral oil-removing rust-removing agent total mass per-cent 0.1-0.5%, S-WAT accounts for described neutral oil-removing rust-removing agent total mass per-cent 1.5-2.5%, and other auxiliary agents account for described neutral oil-removing rust-removing agent total mass per-cent 2-15%.
Described other auxiliary agents are for concentrating foamless detergent.
The concentration of described 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP 〉=50%, the concentration of polyacrylic acid PAA 〉=30%, purity 〉=96% of sheet alkali NaOH, the purity of benzotriazole 〉=96%, the purity of S-WAT 〉=96%.
The Production Flow Chart of described oil-removing rust-removing agent is:
1) adds 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP at normal temperatures and pressures by component and concentration;
2) add polyacrylic acid PAA at normal temperatures and pressures by component and concentration and stir;
3) add sheet alkali NaOH at normal temperatures and pressures by component and concentration and stir;
4) add benzotriazole at normal temperatures and pressures by component and stir;
5) add S-WAT at normal temperatures and pressures by component and stir;
6) add water at normal temperatures and pressures by component and stir;
7) add other auxiliary agents at normal temperatures and pressures by component and stir.
The clean-out system of producing by Production Flow Chart can all metallic surfaces of disposable removal dirt settling such as greasy dirt, solid particulate, can dissolve the iron rust of steel surface, rolling scale etc. for a full due, and the hydrogen phenomenon of oozing of the iron and steel that is safe from harm produces, system's degree of cleaning after the cleaning are that general matting is incomparable, and it is free from environmental pollution, compliance with environmental protection requirements is present state-of-the-art matting medicament, fills the domestic gaps.Equally, the neutral cleaning especially cooperates the auxiliary cleaning means of ultrasonic cleaning etc., is that pickling traditional before the metal works surface treatment, the ideal of alkali cleaning replace technology.
The present invention has following beneficial effect:
1, the present invention cleans the outstanding advantage that has before system or device driving
1) safe and reliable
The neutral oil-removing rust-removing agent pH value=6.5-7.4 of the present invention has avoided from the source equipment, system are produced any type of corrosion.Neutral oil-removing rust-removing agent is to the corrosion rate of unlike material equipment, the 0.1-1% that has only traditional acidic cleaner and industry standard to require.
2) simple to operate
It is very convenient that the neutral oil-removing rust-removing agent of the present invention operates, and in clean-out system normal temperature injected system, or soaks, or circulation, cleans after 36 hours, and oil removing, rust cleaning, passivation, phosphatization is disposable finishes.This need not split out instrument, power-equipment one.
3) effect is remarkable
Neutral oil-removing rust-removing agent of the present invention is based on the comprehensive action of more function group, foul, iron rust, welding slag and the rolling scale of metallic surface are complexed to discharge system in the solution, during neutral the cleaning, iron rust and rolling scale are not to resemble to peel off in the system of being deposited in the form of sheets the pickling, but be dissolved in discharge system in the clean-out system, so not having solid residue in the system after cleaning exists, surface clearness after the cleaning is that the traditional chemical cleaning is incomparable, and this performance can be described as the great advantage of neutral oil-removing rust-removing agent.Therefore neutral the cleaning is applicable to lubricating oil, the matting of sealing oil, control oil, hydraulic efficiency system, turbine inlet pipe network and other important device and system.
4) be widely used
The neutral oil-removing rust-removing agent of the present invention is the thickness of grease, rust deposite no matter, no matter is carbon steel, stainless steel or copper, aluminium, zinc and other non-ferrous metal, no matter is that low pressure, middle pressure or high pressure, ultra-high pressure device all can use.
5) environmental protection
The complete compliance with environmental protection requirements of the neutral oil-removing rust-removing agent of the present invention, the waste liquid after the cleaning is still nontoxic, tasteless, no acid-basicity, and harmless to human body, water body, nontoxic to the water fish class, surrounding environment there is not any pollution.Water consumption and blowdown flow rate in cleaning before driving are about 20% of acid cleaning process approximately, especially have superiority for lack of water or the place that lacks sewage disposal facility.
2, the present invention uses the outstanding advantage that has before workpiece surface is handled
The present invention is that staff's safety, the solution of surrounding environment environmental issue provide splendid scheme with the performance of its good safety, environmental protection undoubtedly.Although rust cleaning speed with respect to traditional acidic cleaner, the independent rust cleaning speed of neutral oil-removing rust-removing agent is slower, but as long as original pickling, alkaline bath are replaced with ultrasonic cleaner, the neutral oil-removing rust-removing agent that adds 5-10% in the rinse bath, in conjunction with hyperacoustic auxiliary cleaning means, can reach the rate request of production technique fully.And degreasing and rust removal can once be finished, and has simplified production process.
Embodiment
Further specify below in conjunction with embodiment, and unrestricted scope involved in the present invention.
PH value=6.5-7.4 of the present invention, and can be applied to the preceding matting of high-pressure system driving, and can be generalized to the preceding matting of refinery polypropylene plant high, medium and low voltage oil piping system driving, the matting of the steam inlet tube of unit oil piping system and steam turbines in the heavy oil catalytically cracking equipment, and the matting of poly-interior alkene device thermal oil and fluid additive system.In turbine in the branch device of the refinery inlet at vapour line, interior alkane air compressor source line, the compressor gas inlet tube, hydrogen pipe, oxygen hose etc. all obtain user's favorable comment.The present invention is that staff's safety, the solution of surrounding environment environmental issue provide ideal scheme with the performance of its good safety, environmental protection undoubtedly.As long as original pickling, alkaline bath are replaced with ultrasonic cleaner, and add 5～10% neutral oil-removing rust-removing agent,, in safety and environmental protection, satisfied the requirement of production technique in conjunction with hyperacoustic auxiliary cleaning means.
Embodiment 1:
Production Flow Chart according to oil-removing rust-removing agent: by concentration 〉=50%, mass percent 20% adds 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP at normal temperatures and pressures, by concentration 〉=30%, mass percent 15% is added polyacrylic acid PAA at normal temperatures and pressures and is stirred, 59.4% adds entry by mass percentage, by purity 〉=96%, mass percent 2% is added sheet alkali NaOH at normal temperatures and pressures and is stirred, 2% adds the hyperconcentration foamless detergent at normal temperatures and pressures and stirs by mass percentage, by purity 〉=96%, mass percent 0.1% is added benzotriazole at normal temperatures and pressures and is stirred, by purity 〉=96%, mass percent 1.5% is added S-WAT at normal temperatures and pressures and is stirred, and behind the thorough mixing, obtains the second best in quality neutral oil-removing rust-removing agent.
Embodiment 2:
Production Flow Chart according to oil-removing rust-removing agent: by concentration 〉=50%, mass percent 25% adds 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP at normal temperatures and pressures, by concentration 〉=30%, mass percent 15% is added polyacrylic acid PAA at normal temperatures and pressures and is stirred, 42% adds entry by mass percentage, by purity 〉=96%, mass percent 5% is added sheet alkali NaOH at normal temperatures and pressures and is stirred, 10% adds the hyperconcentration foamless detergent at normal temperatures and pressures and stirs by mass percentage, by purity 〉=96%, mass percent 0.5% is added benzotriazole at normal temperatures and pressures and is stirred, by purity 〉=96%, mass percent 2.5% is added S-WAT at normal temperatures and pressures and is stirred, and behind the thorough mixing, obtains the second best in quality neutral oil-removing rust-removing agent.
Embodiment 3:
Production Flow Chart according to oil-removing rust-removing agent: by concentration 〉=50%, mass percent 20.5% adds 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP at normal temperatures and pressures, by concentration 〉=30%, mass percent 18% is added polyacrylic acid PAA at normal temperatures and pressures and is stirred, 51.8% adds entry by mass percentage, by purity 〉=96%, mass percent 5% is added sheet alkali NaOH at normal temperatures and pressures and is stirred, 2.5% adds the hyperconcentration foamless detergent at normal temperatures and pressures and stirs by mass percentage, by purity 〉=96%, mass percent 0.2% is added benzotriazole at normal temperatures and pressures and is stirred, by purity 〉=96%, mass percent 2% is added S-WAT at normal temperatures and pressures and is stirred, and behind the thorough mixing, obtains the second best in quality neutral oil-removing rust-removing agent.
Embodiment 4:
Production Flow Chart according to oil-removing rust-removing agent: by concentration 〉=50%, mass percent 25% adds 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP at normal temperatures and pressures, by concentration 〉=30%, mass percent 16% is added polyacrylic acid PAA at normal temperatures and pressures and is stirred, 50% adds entry by mass percentage, by purity 〉=96%, mass percent 4% is added sheet alkali NaOH at normal temperatures and pressures and is stirred, 3% adds the hyperconcentration foamless detergent at normal temperatures and pressures and stirs by mass percentage, by purity 〉=96%, mass percent 0.3% is added benzotriazole at normal temperatures and pressures and is stirred, by purity 〉=96%, mass percent 1.7% is added S-WAT at normal temperatures and pressures and is stirred, and behind the thorough mixing, obtains the second best in quality neutral oil-removing rust-removing agent.
Embodiment 5:
Production Flow Chart according to oil-removing rust-removing agent: by concentration 〉=50%, mass percent 22% adds 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP at normal temperatures and pressures, by concentration 〉=30%, mass percent 16% is added polyacrylic acid PAA at normal temperatures and pressures and is stirred, 53% adds entry by mass percentage, by purity 〉=96%, mass percent 4.8% is added sheet alkali NaOH at normal temperatures and pressures and is stirred, 2.5% adds the hyperconcentration foamless detergent at normal temperatures and pressures and stirs by mass percentage, by purity 〉=96%, mass percent 0.2% is added benzotriazole at normal temperatures and pressures and is stirred, by purity 〉=96%, mass percent 1.5% is added S-WAT at normal temperatures and pressures and is stirred, and behind the thorough mixing, obtains the second best in quality neutral oil-removing rust-removing agent.
Claims (3)
1. neutral oil-removing rust-removing agent, it is characterized in that: by 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP, polyacrylic acid PAA, sheet alkali NaOH, benzotriazole, S-WAT, water and other auxiliary agents are formed, the composition proportioning of described neutral oil-removing rust-removing agent is: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP accounts for described neutral oil-removing rust-removing agent total mass per-cent 20-25%, polyacrylic acid PAA accounts for described neutral oil-removing rust-removing agent total mass per-cent 15-20%, water accounts for described neutral oil-removing rust-removing agent total mass per-cent 40-60%, sheet alkali NaOH accounts for described neutral oil-removing rust-removing agent total mass per-cent 2-5%, benzotriazole accounts for described neutral oil-removing rust-removing agent total mass per-cent 0.1-0.5%, S-WAT accounts for described neutral oil-removing rust-removing agent total mass per-cent 1.5-2.5%, and other auxiliary agents account for described neutral oil-removing rust-removing agent total mass per-cent 2-15%.
2. neutral oil-removing rust-removing agent according to claim 1, it is characterized in that: described other auxiliary agents are for concentrating foamless detergent, the concentration of described 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP 〉=50%, the concentration of polyacrylic acid PAA 〉=30%, purity 〉=96% of sheet alkali NaOH, the purity of benzotriazole 〉=96%, the purity of S-WAT 〉=96%.
3. neutral oil-removing rust-removing agent according to claim 2 is characterized in that: the Production Flow Chart of described oil-removing rust-removing agent is:
1) adds 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid HEDP at normal temperatures and pressures by component and concentration;
2) add polyacrylic acid PAA at normal temperatures and pressures by component and concentration and stir;
3) add sheet alkali NaOH at normal temperatures and pressures by component and purity and stir;
4) add benzotriazole at normal temperatures and pressures by component and purity and stir;
5) add S-WAT at normal temperatures and pressures by component and purity and stir;
6) add water at normal temperatures and pressures by component and stir;
7) add other auxiliary agents at normal temperatures and pressures by component and stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110032491 CN102134723A (en) | 2011-01-24 | 2011-01-24 | Neutral oil removing and rust removing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110032491 CN102134723A (en) | 2011-01-24 | 2011-01-24 | Neutral oil removing and rust removing agent |
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| CN102134723A true CN102134723A (en) | 2011-07-27 |
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|---|---|---|---|
| CN 201110032491 Pending CN102134723A (en) | 2011-01-24 | 2011-01-24 | Neutral oil removing and rust removing agent |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2507312C1 (en) * | 2012-06-29 | 2014-02-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный машиностроительный университет (МАМИ)" | Method of cleaning metal surfaces from corrosion deposits |
| CN105223311A (en) * | 2014-06-16 | 2016-01-06 | 上海蓝浦清洗技术有限公司 | The cleaning of a kind of stainless steel neutrality detects cream |
| CN106381496A (en) * | 2016-09-06 | 2017-02-08 | 天津科技大学 | Neutral rust removal and prevention agent, preparation method and implementation process |
| CN107299354A (en) * | 2017-07-29 | 2017-10-27 | 巢湖鹏远金属焊管有限公司 | A kind of inner wall of metal tube cleaning fluid and preparation method thereof |
| CN107502903A (en) * | 2017-07-29 | 2017-12-22 | 巢湖鹏远金属焊管有限公司 | A kind of inner wall of metal tube rust removing solution and preparation method thereof |
| CN114657545A (en) * | 2021-03-12 | 2022-06-24 | 塞尔纳新材料(武汉)有限公司 | Ecological descaling type rapid sedimentation passivation solution and preparation process thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2507312C1 (en) * | 2012-06-29 | 2014-02-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный машиностроительный университет (МАМИ)" | Method of cleaning metal surfaces from corrosion deposits |
| CN105223311A (en) * | 2014-06-16 | 2016-01-06 | 上海蓝浦清洗技术有限公司 | The cleaning of a kind of stainless steel neutrality detects cream |
| CN106381496A (en) * | 2016-09-06 | 2017-02-08 | 天津科技大学 | Neutral rust removal and prevention agent, preparation method and implementation process |
| CN107299354A (en) * | 2017-07-29 | 2017-10-27 | 巢湖鹏远金属焊管有限公司 | A kind of inner wall of metal tube cleaning fluid and preparation method thereof |
| CN107502903A (en) * | 2017-07-29 | 2017-12-22 | 巢湖鹏远金属焊管有限公司 | A kind of inner wall of metal tube rust removing solution and preparation method thereof |
| CN114657545A (en) * | 2021-03-12 | 2022-06-24 | 塞尔纳新材料(武汉)有限公司 | Ecological descaling type rapid sedimentation passivation solution and preparation process thereof |
| CN114657545B (en) * | 2021-03-12 | 2023-11-24 | 塞尔纳新材料(武汉)有限公司 | Ecological descaling type rapid sedimentation passivation solution and preparation process thereof |
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Application publication date: 20110727 |