CN105088251A - Corrosion inhibitor composition, applications thereof, and method using same to carry out pickling on equipment - Google Patents
Corrosion inhibitor composition, applications thereof, and method using same to carry out pickling on equipment Download PDFInfo
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Abstract
The invention discloses a corrosion inhibitor composition, applications thereof, and a method using the same to carry out pickling on equipment. The corrosion inhibitor composition comprises a urea type corrosion inhibitor, a promoter, thiocyanate, a hydrazine type corrosion inhibitor, and inorganic silicate according to a weight ratio of 1:0.25-4:0.25-5:1-8:0.025-0.6. The equipment picking method comprises a step of contacting a pickling solution containing the provided corrosion inhibitor composition with equipment. Through the provided technical scheme, the components in the corrosion inhibitor composition can cooperate with each other to generate a synergetic effect; thus the chemical properties of the corrosion inhibitor composition are stable, and the multi-purpose corrosion inhibitor composition is environment-friendly and is accord with the environment-protection requirements. Furthermore, the adaptability of the corrosion inhibitor composition is strong, the corrosion inhibiting performance is excellent, the addition amount is little, the processing is simple, the effect is prominent, and thus the corrosion inhibitor composition is easy to promote and use.
Description
Technical field
The invention belongs to technical field of fine, relate to a kind of inhibiter composition and application thereof and equipment is carried out to the method for pickling, particularly, relate to a kind of inhibiter composition and the application in the pickling of equipment thereof, and utilize this inhibiter composition equipment to be carried out to the method for pickling.
Background technology
Pickling is widely used in the incrustation scales on surface such as the rolling mill scale of heat-exchange equipment, heat transfer equipment, cooling apparatus, iron and steel and other metallic substance in each industrial sector (as electric power, petrochemical industry, metallurgy and electronics etc.) and zone of oxidation and the cleaning of metal dirt.The heat power equipment (as boiler) of power department and the pickling of chemical industry equipment are even more important.From socioeconomic angle, pickling can reduce the fuel brought because of dirt and expend; From the angle of environment protection, decrease exhaust combustion gases and topsoil; From the view of security, the heat power equipment such as boiler and interchanger in use forms all kinds of dirt gradually, and the bad meeting of these dirt heat conduction causes boiler tube local temperature to raise, reduce the intensity of steel, thus cause the generation of pipe explosion accident, affect boiler and heat-exchange equipment operation, and the normal operation of equipment can be ensured by pickling.
The acid that pickling is commonly used has mineral acid and the organic acids such as citric acid, EDTA such as hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid, thionamic acid.But because acid all has corrosive nature to hardware, especially the corrosion of mineral acid is even more serious, the hydrogen of simultaneously releasing can spread to metal inside, makes by the equipment generation hydrogen embrittlement cleaned.In addition, a large amount of sour gas that pickling is separated out know from experience deterioration labor condition.Therefore, inhibiter will be added when pickling, to suppress the usage quantity that the burn into of metal in acidic medium reduces acid, the work-ing life of improving pickling effect, extending heat power equipment.
First patent application of restrainer is that the mixture of Britain's announcement syrup in 1860 and vegetables oil is as inhibiter during pickling iron plate.To the twenties in 20th century, metal inhibitor has formaldehyde, anthracene, quinoline, pyridine, thiocarbamide and derivative; The forties, nitrogenous aliphatic amide, aromatic amine, heterogeneous ring compound, thiocarbamide and mercaptan are general to be used as restrainer; The fifties is organic inhibitor to the sixties; It is the inhibiter of composite composition after the seventies; There are the eighties such as the salt acid inhibitor of benzimidazoles stainless steel and carbon steel, copper inhibitor and the multiplex restrainer of benzyl quaternary ammonium salt solid etc.The nineties, developed so far restrainer mainly contained imidazolines and Sulphur-containing Imidazole quinoline derivant, as the salt acid inhibitor of the copper such as SM-thiocarbamide condenses, IS-129 imidazolines, dehydrogenation rosin-base imidazoline corrosion inhibitor, SH-707, IS-156, BH-2 etc.Current domestic the most frequently used Lan-826 multi-usage restrainer can be used in multiple pickle solution, but the placement of this product easily produces precipitation, unstable chemcial property, product performance are caused very easily to reduce, in addition, cleaning in cupric device procedures with Lan-826, also copper facing phenomenon can be produced.
CN101634030A discloses a kind of restrainer for cleaning boiler and using method thereof.The component of this restrainer and mass percentage content are: acid solution 2.0-10.0%, urotropine 0.08-0.25%, dimethylbenzene thiocarbamide or thiocarbamide 0.04-0.15%, thiocyanate-0.01-0.05%, 12-hexadecyl Methoxybenzyl chloride or bromide 0.03-0.12%, tensio-active agent 0.05-0.12%, surplus is water.
CN101608313A discloses various metals high-performance solid restrainer.If this solid pickling inhibitor is formed by Tianjin fourth, urotropine, thiocarbamide, benzotriazole crushing, stirring together with surfactant compound, its weight percentage is respectively: 50-80%, 10-20%, 10-20%, 5-10%, 1-5%.Various metals or the alloys such as carbon steel, stainless steel, copper, zinc, aluminium, titanium can be suitable for.
[the corrosion and protection such as Zhao Liping, 2007,28 (10): 536-539] a kind of multiplex solid pickling inhibitor CM-911 is reported, nitric acid, hydrochloric acid, sulfuric acid, thionamic acid, citric acid, oxalic acid can be used in, the materials such as the pickle solutions such as EDTA, oxyacetic acid, hydrofluoric acid and carbon steel, stainless steel, brass, red copper and aluminium.
The restrainer great majority of current use are planted for single acid, the inhibition of single metal, and specificity is very strong, difference on effect is large, and some unstable chemcial properties, need situ configuration, working strength is large, and easily cause misoperation, the risk that equipment corrosion accident is occurred is larger.
Summary of the invention
The object of the invention is to overcome prior art deficiency, low, the adaptable multiduty inhibiter composition of a kind of stable chemical nature, toxicity and application thereof are provided and equipment are carried out to the method for pickling.
To achieve these goals, on the one hand, the invention provides a kind of inhibiter composition, this inhibiter composition contains urea type inhibiter, promotor, thiocyanate-, hydrazine type inhibiter and inorganic silicate, wherein, the weight ratio of described urea type inhibiter, promotor, thiocyanate-, hydrazine type inhibiter and inorganic silicate is 1:0.25-4:0.25-5:1-8:0.025-0.6, is preferably 1:0.65-1.5:0.65-2:1.65-3.5:0.05-0.3.
On the one hand, the invention provides a kind of method of equipment being carried out to pickling, wherein, the method comprises and being contacted with equipment by pickle solution, and described pickle solution contains above-mentioned inhibiter composition and acid.
On the other hand, the invention provides the application of above-mentioned inhibiter composition in the pickling of equipment.
Pass through technique scheme, each component in inhibiter composition of the present invention can play a role mutually synergistically, therefore, and inhibiter composition stable chemical nature of the present invention, for eco-friendly multi-usage inhibiter composition, meet the requirement of environmental protection; Inhibiter composition of the present invention can be used in 19 kinds of mineral acids or organic acid acid cleaning process, wide adaptability, and have excellent corrosion inhibition, dosage is few, and the simple and successful for the treatment of processes, is easy to apply.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Inhibiter composition provided by the invention contains urea type inhibiter, promotor, thiocyanate-, hydrazine type inhibiter and inorganic silicate, wherein, the weight ratio of described urea type inhibiter, promotor, thiocyanate-, hydrazine type inhibiter and inorganic silicate is 1:0.25-4:0.25-5:1-8:0.025-0.6, is preferably 1:0.65-1.5:0.65-2:1.65-3.5:0.05-0.3.
Wherein, described urea type inhibiter is the important component part in inhibiter composition, can be urea and/or its derivative of this area routine use, under preferable case, described urea type inhibiter be selected from thiocarbamide, N, N-diethyl thiourea, N, N-di-o-tolyl thiocarbamide, N, N-di-n-butyl thiocarbamide, urea, Urea,amino-, carbamylhydrazine hydrochloride, 1,3-diaminourea, 1, at least one in 3-diaminourea hydrochloride, 1,3-diamino thiocarbamide, thiosemicarbazide, guanylurea, amidinothiourea.
According to the present invention, described promotor is the important component part in inhibiter composition, can have the material of corrosion inhibition in acid condition for various by molecular physics and chemisorption to various metals.Under preferable case, described promotor selected from mercapto benzothiazole, 2, at least one in 2 '-dithio-bis-benzothiazole, 4-methyl benzotriazazole, 5-methyl benzotriazazole and benzotriazole.
According to the present invention, described thiocyanate-is the important component part in inhibiter composition, the various thiocyanate-s can commonly used for this area.Preferably, described thiocyanate-is be selected from least one in Sodium Thiocyanate 99, potassium sulfocyanate and ammonium thiocyanate.
According to the present invention, described hydrazine type inhibiter is the important component part in inhibiter composition, can be hydrazine and/or its derivative of this area routine use.Under preferable case, described hydrazine type inhibiter is selected from least one in hydrazine hydrate, hydrazine hydrochloride, hydrazonium sulfate and carbonic acid hydrazine.
According to the present invention, described inorganic silicate is the important component part in inhibiter composition, inhibiter composition of the present invention can be impelled to play corrosion inhibition better, possible reason is that it can slow down or prevent decomposition and the oxidation of urea type inhibiter in acid condition, keeps the performance of urea type inhibiter corrosion inhibition.Under preferable case, described inorganic silicate is potassium silicate and/or water glass.
The present inventor finds, the preferred promotor of the present invention and preferred urea type inhibiter and preferred thiocyanate-have synergistic effect, can improve the corrosion inhibition of inhibiter composition further.
According to the present invention, described inhibiter composition can also contain solvent.Solvent can be water and/or low-carbon alcohol.Described solvent can promote that each component of inhibiter composition mixes more equably, thus play synergistic slow corrosion performance better, therefore, to the not special requirement of the consumption of described solvent, as long as each component of inhibiter composition can be made fully to dissolve.Preferably, the weight ratio of described urea type inhibiter and described solvent is 1:15-80 (being more preferably 1:21-72).
Wherein, described low-carbon alcohol can make each component dissolves in inhibiter composition thus well-mixed organic solvent (if carbonatoms is the alcohol of 1-3) for any.Under preferable case, described low-carbon alcohol is selected from least one in methyl alcohol, ethanol, n-propyl alcohol, Virahol, ethylene glycol and propylene glycol.
According to the present invention, described inhibiter composition can also contain tensio-active agent, and described tensio-active agent can be the tensio-active agent (at least one in anion surfactant, cats product and non-ionic surface active) of any type.Such as, alkyl or aryl sulfuric acid, sodium sulfonate, potassium sulfonate, ammonium sulphonate, alkyl phosphate salt, alkyl carboxylate, alkyl sulfonyl amine salt, fatty alcohol-polyoxyethylene ether, alkyl glycoside, alkanolamide, alkyl quaternary ammonium salts or Fixanol etc.Commercially available various tensio-active agents (as OP-10, OP-15, NP-10, NP-15, NP or CAS123-03-5 etc.) all may be used for the present invention, do not repeat them here.
According to the present invention, described inhibiter composition can be obtained by existing various method, such as can mix being formed the raw material of described inhibiter composition according to aforementioned ratio and obtain, therefore the present invention to the step of described mixing and condition without particular requirement.For convenience of using and promoting that each component mixes, by each component according to after aforementioned proportion mixing, a certain amount of dilution solvent (preferably water) can also be added, inhibiter composition is mixed with certain density medicament for subsequent use.
Method of carrying out pickling to equipment provided by the invention comprises and being contacted with equipment by pickle solution, and described pickle solution contains above-mentioned inhibiter composition of the present invention and acid.
In the present invention, described equipment can for needing the various equipment of pickling.Under preferable case, the material treating pickling position of described equipment is at least one in carbon steel, stainless steel, copper and alloy thereof, Aluminum-aluminum alloy.
In the present invention, the content of described inhibiter composition can be the amount of this area routine, and such as, with the gross weight of described pickle solution for benchmark, the consumption of described inhibiter composition can be 0.05-30 weight ‰.Preferably, with the gross weight of described pickle solution for benchmark, the consumption of described inhibiter composition is 0.05-5 weight ‰.It should be noted that, when not doing contrary explanation, in the present invention, the consumption of inhibiter composition all only relates to the weight of component (effective constituent) in addition to the solvents.
In the present invention, to the special requirement of the consumption of described acid, and those skilled in the art can for treating that the consumption of the difference of pickling installation to acid is selected, such as, with the gross weight of described pickle solution for benchmark, the consumption of described acid can be 2-10 % by weight usually.
In the present invention, described acid can be various mineral acid and/or the organic acid being suitable for pickling.
Described mineral acid is preferably selected from least one in hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid and phosphoric acid.
Described organic acid is preferably selected from thionamic acid, citric acid, oxyacetic acid, formic acid, ethylenediamine tetraacetic acid (EDTA), oxalic acid, tartrate, hydroxy ethylene diphosphonic acid, Amino Trimethylene Phosphonic Acid, polyacrylic acid, polymaleic acid, polymethyl acrylic acid, 2-phosphinylidyne butane-1; at least one in 2,4-tricarboxylic acid, ethylenediamine tetramethylene phosphonic acid, hexanediamine tetramethylene phosphonic acid and diethylenetriamine penta.
Present invention also offers the application of above-mentioned inhibiter composition in the pickling of equipment.Described equipment can for needing the various equipment of pickling.Under preferable case, the material treating pickling position of described equipment is at least one in carbon steel, stainless steel, copper and alloy thereof, Aluminum-aluminum alloy.
Below will be described the present invention by embodiment.In following examples, embodiment 1-10 is used for inhibiter composition and method of making the same is described." effective content " that use in embodiment refers to that the weight of the component beyond desolventizing accounts for the per-cent of total solution weight; The reagent used in embodiment is as follows: hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid, phosphoric acid, oxyacetic acid, formic acid, thionamic acid, and citric acid, ethylenediamine tetraacetic acid (EDTA), oxalic acid, tartrate, ethanol, ethylene glycol are analytical pure (all purchased from Beijing Chemical Plant); Sodium Thiocyanate 99, potassium sulfocyanate, ammonium thiocyanate, mercaptobenzothiazole, 2,2 '-dithio-bis-benzothiazole, 4 (or 5)-methyl benzotriazazoles, benzotriazole, hydrazine hydrate, hydrazonium sulfate, hydrazine hydrochloride, carbonic acid hydrazine, carbohydrazide, phenylhydrazine, urea, carbamylhydrazine hydrochloride, Urea,amino-, 1,3-diaminourea, 1,3-diaminourea hydrochloride, 1,3-diamino thiocarbamide, thiosemicarbazide, guanylurea, amidinothiourea, water glass, potassium silicate are analytical pure (all purchased from Chemical Reagent Co., Ltd., Sinopharm Group); Hydroxy ethylene phosphonic acids, Amino Trimethylene Phosphonic Acid, polyacrylic acid, polymaleic acid, polymethyl acrylic acid, 2-phosphono-1,2,4-tricarboxylic acid, second (own) diamines tetramethylene phosphonic acid, diethylenetriamine penta, dodecyl dimethyl benzyl chloride (bromine) change ammonium, myristyl benzyl dimethyl chlorine (bromine) changes ammonium, hexadecyldimethyl benzyl ammonium benzyl chloride (bromine) is changed ammonium and is technical grade (all purchased from Jianghai Environmental Protection Co., Ltd.); Chlorine (bromine) changes dococylpyridinium, chlorine (bromine) is changed tetradecylpyridinium and is analytical pure (all purchased from AladdinIndustrial company); Fatty alcohol-polyoxyethylene ether (model is OP-10, OP-15, NP-10, NP-15) is technical grade (all purchased from Hai'an, Jiangsu petrochemical plant); The multiplex restrainer of Lan-826 cleans limited-liability company purchased from blue star, and the multiplex solid pickling inhibitor of CM-911 is purchased from Weihai Yun Qing chemical development institute.
Embodiment 1
Take 1.0g thiocarbamide, 0.65g mercaptobenzothiazole, 2.0g Sodium Thiocyanate 99,1.65g hydrazine hydrate, 0.05g potassium silicate, mixing, is finally diluted with water to the solution that effective content is 20%, stirs.
Embodiment 2
Take 0.5g Urea,amino-, 0.5g thiosemicarbazide, 2, the 2-dithio-bis-benzothiazoles of 1.5g, 0.65g ammonium thiocyanate, 3.5g phenylhydrazine, 0.3g water glass, mixing, stirs.
Embodiment 3
Take 1, the 3-diamino thiocarbamide of 0.8g, 0.2g urea, 0.4g benzotriazole, 0.6g mercaptobenzothiazole, 1.4g potassium sulfocyanate, 2.5g carbohydrazide, 0.175g potassium silicate, mixing, stirs.
Embodiment 4
Take 1, the 3-diaminourea hydrochloride of 4.0g, the N of 4.0g, N-diethyl thiourea, the N of 2.0g, N-di-n-butyl thiocarbamide, 5.0g mercaptobenzothiazole, the 4-methyl benzotriazazole of 1.5g, 6.5g Sodium Thiocyanate 99,0.25g water glass, 0.1g tetradecyl pyridine bromide, 16.5g hydrazine hydrochloride, mixing, stirs.
Embodiment 5
Take 0.4g semicarbazide hydrochloride, 0.6g thiocarbamide, 1.5g mercaptobenzothiazole, 2.0g Sodium Thiocyanate 99,3.5g carbonic acid hydrazine, 0.3g water glass, mixing, being finally diluted with ethanol to effective content is 20% solution, stirs.
Embodiment 6
Take 0.9g thiocarbamide, the N of 0.1g, N-di-o-tolyl thiocarbamide, 0.25g benzotriazole, 5.0g Sodium Thiocyanate 99,1.0g phenylhydrazine, 0.25g potassium silicate, 0.6g chlorination dococylpyridinium, mixing, stirs.
Embodiment 7
Take 0.8g thiocarbamide, 0.2g amidinothiourea, 4.0g mercaptobenzothiazole, 0.25g ammonium thiocyanate, 8.0g hydrazine hydrate, the NP-15 of the NP-10 of 0.1g, 0.15g, 0.05g water glass, mixing, it is 20% solution that last spent glycol is diluted to effective content, stirs.
Embodiment 8
Take 0.8g thiocarbamide, 0.2g guanylurea, 0.45g mercaptobenzothiazole, 0.45g Sodium Thiocyanate 99,5.0g hydrazine hydrochloride, the OP-15 of the OP-10 of 0.1g, 0.1g, 0.03g water glass, mixing, stirs.
Embodiment 9
Take 1.0g semicarbazide hydrochloride, 2.0g mercaptobenzothiazole, 3.5g Sodium Thiocyanate 99,1.0g hydrazonium sulfate, 0.3g water glass, 0.45g dodecyl dimethyl benzyl ammonium bromide, mixing, stirs.
Embodiment 10
Take 1.0g thiosemicarbazide, 4.0g mercaptobenzothiazole, 5.0g Sodium Thiocyanate 99,8.0g hydrazine hydrochloride, 0.2g water glass, 0.2g myristyl benzyl dimethyl ammonium chloride, 0.4g cetalkonium chloride, mixing, stirs.
Comparative example 1
Use Lan-826 as inhibiter composition, according to the description of product of the multiplex restrainer of Lan-826, consumption is 0.25% of pickle solution quality.
Comparative example 2
Use CM-911 as inhibiter composition, according to the description of product of the multiplex solid pickling inhibitor of CM-911, consumption is 0.1% of pickle solution quality.
Comparative example 3
Inhibiter composition is prepared according to the embodiment 2 of CN101634030A.
Comparative example 4
Inhibiter composition is prepared according to the embodiment 1 of CN101608313A.
Comparative example 5
Inhibiter composition is prepared according to embodiment 1, unlike, do not use potassium silicate.
Comparative example 6
Inhibiter composition is prepared according to embodiment 1, unlike, the consumption of thiocarbamide is 0.55g, and the consumption of potassium silicate is 0.5g.
Test case 1
According to DL/T523-2007 " matting inhibiter Performance Properties Evaluation index and experimental technique " and GB/T25146-2010 " industrial equipments matting inspection of quality specification ", respectively the corrosion inhibition of the inhibiter composition of embodiment 1-10 and comparative example 1-6 gained is evaluated, wherein, erosion rate is lower, illustrates that the corrosion inhibition of inhibiter composition is higher.In table 1, "-" represents the erosion rate of inhibiter composition in this pickle solution (static etch rate) that undetermined obtains.
Table 1
As can be seen from the evaluation experimental result of table 1, inhibiter composition of the present invention has good corrosion inhibition, add the pickle solution after inhibiter composition of the present invention, the erosion rate <1.5g/ (m of the salt acid inhibitor that erosion rate all specifies in DL/T523-2007 " matting inhibiter Performance Properties Evaluation index and experimental technique "
2h), the erosion rate <1.0g/ (m of hydrofluoric acid inhibiter
2h), the erosion rate <1.5g/ (m of EDTA inhibiter
2h), the erosion rate <1.0g/ (m of thionamic acid inhibiter
2h), the erosion rate <1.0g/ (m of citric acid inhibiter
2h), the erosion rate <0.3g/ (m of copper inhibitor
2h) requirement, is all less than the corrosion of carbon steel speed≤2.0g/ (m of regulation in GB/T25146-2010 " industrial equipments matting inspection of quality specification " to the erosion rate of unlike material
2h), Corrosion of Stainless Steel speed≤1.0g/ (m
2h), brass corrosion speed≤1.0g/ (m
2h), red copper erosion rate≤1.0g/ (m
2h), aluminium erosion rate≤1.0g/ (m
2h), therefore, inhibiter composition of the present invention can meet the inhibition requirement of various metals material pickling.
It can also be seen that from the above results, inhibiter composition working concentration of the present invention is low, only needing to add the 0.05-5 weight ‰ relative to pickle solution gross weight, just can obtain good corrosion inhibition when processing pickle solution.
In addition, the measurement result of comparing embodiment 1-10 and comparative example 1-4 can be found out, inhibiter composition of the present invention reveals more excellent corrosion mitigating effect than existing inhibiter compositions table.Embodiment 1 is compared can find out with the measurement result of comparative example 5-6, each composition of inhibiter composition of the present invention with specified quantitative with the use of time can play collaborative corrosion inhibition.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (11)
1. an inhibiter composition, it is characterized in that, this inhibiter composition contains urea type inhibiter, promotor, thiocyanate-, hydrazine type inhibiter and inorganic silicate, wherein, the weight ratio of described urea type inhibiter, promotor, thiocyanate-, hydrazine type inhibiter and inorganic silicate is 1:0.25-4:0.25-5:1-8:0.025-0.6, is preferably 1:0.65-1.5:0.65-2:1.65-3.5:0.05-0.3.
2. inhibiter composition according to claim 1, wherein, described urea type inhibiter is selected from thiocarbamide, N, N-diethyl thiourea, N, N-di-o-tolyl thiocarbamide, N, N-di-n-butyl thiocarbamide, urea, Urea,amino-, carbamylhydrazine hydrochloride, 1,3-diaminourea, 1, at least one in 3-diaminourea hydrochloride, 1,3-diamino thiocarbamide, thiosemicarbazide, guanylurea, amidinothiourea.
3. inhibiter composition according to claim 1, wherein, described promotor selected from mercapto benzothiazole, 2, at least one in 2 '-dithio-bis-benzothiazole, 4-methyl benzotriazazole, 5-methyl benzotriazazole and benzotriazole.
4. inhibiter composition according to claim 1, wherein, described thiocyanate-is selected from least one in Sodium Thiocyanate 99, potassium sulfocyanate and ammonium thiocyanate.
5. inhibiter composition according to claim 1, wherein, described hydrazine type inhibiter is selected from least one in hydrazine hydrate, hydrazine hydrochloride, hydrazonium sulfate and carbonic acid hydrazine.
6. inhibiter composition according to claim 1, wherein, described inorganic silicate is potassium silicate and/or water glass.
7. equipment is carried out to a method for pickling, it is characterized in that, the method comprises and being contacted with equipment by pickle solution, and described pickle solution contains inhibiter composition in claim 1-6 described in any one and acid.
8. method according to claim 7, wherein, with the gross weight of described pickle solution for benchmark, the consumption of described inhibiter composition is 0.05-5 weight ‰.
9. the method according to claim 7 or 8, wherein, described acid is mineral acid and/or organic acid, described mineral acid is selected from hydrochloric acid, sulfuric acid, nitric acid, at least one in hydrofluoric acid and phosphoric acid, described organic acid is selected from thionamic acid, citric acid, oxyacetic acid, formic acid, ethylenediamine tetraacetic acid (EDTA), oxalic acid, tartrate, hydroxy ethylene diphosphonic acid, Amino Trimethylene Phosphonic Acid, polyacrylic acid, polymaleic acid, polymethyl acrylic acid, 2-phosphinylidyne butane-1, 2, 4-tricarboxylic acid, ethylenediamine tetramethylene phosphonic acid, at least one in hexanediamine tetramethylene phosphonic acid and diethylenetriamine penta.
10. the application of inhibiter composition in the pickling of equipment in claim 1-6 described in any one.
11. application according to claim 10, wherein, the material treating pickling position of described equipment is at least one in carbon steel, stainless steel, copper and alloy thereof, Aluminum-aluminum alloy.
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| CN106119867A (en) * | 2016-08-16 | 2016-11-16 | 四川理工学院 | A kind of tetramino phenazone is combined preparation and the application of carbon steel pickling corrosion inhibitor |
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| CN106637374A (en) * | 2016-12-27 | 2017-05-10 | 常州工程职业技术学院 | Carbon steel pickling solution, and applications thereof |
| CN106894029A (en) * | 2015-12-18 | 2017-06-27 | 比亚迪股份有限公司 | A kind of aluminum alloy cleaning agent and preparation method thereof and aluminium alloy cleaning method |
| CN107761111A (en) * | 2017-10-24 | 2018-03-06 | 威海翔泽新材料科技有限公司 | A kind of boiler acid pickling agent and preparation method thereof |
| CN108004555A (en) * | 2016-11-01 | 2018-05-08 | 中国石油化工股份有限公司 | Corrosion inhibiter is with composition and its application and method that pickling is carried out to equipment |
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| CN106894029A (en) * | 2015-12-18 | 2017-06-27 | 比亚迪股份有限公司 | A kind of aluminum alloy cleaning agent and preparation method thereof and aluminium alloy cleaning method |
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| CN106119867A (en) * | 2016-08-16 | 2016-11-16 | 四川理工学院 | A kind of tetramino phenazone is combined preparation and the application of carbon steel pickling corrosion inhibitor |
| CN106498419A (en) * | 2016-09-30 | 2017-03-15 | 湖北奥美伦科技有限公司 | Accurate removing agent of a kind of aluminium alloy anode oxide film and preparation method thereof and precision move back membrane process |
| CN108004555A (en) * | 2016-11-01 | 2018-05-08 | 中国石油化工股份有限公司 | Corrosion inhibiter is with composition and its application and method that pickling is carried out to equipment |
| CN106637374A (en) * | 2016-12-27 | 2017-05-10 | 常州工程职业技术学院 | Carbon steel pickling solution, and applications thereof |
| CN107761111A (en) * | 2017-10-24 | 2018-03-06 | 威海翔泽新材料科技有限公司 | A kind of boiler acid pickling agent and preparation method thereof |
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Application publication date: 20151125 |