CN110819998A - Hydrochloric acid additive and preparation method thereof - Google Patents
Hydrochloric acid additive and preparation method thereof Download PDFInfo
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- CN110819998A CN110819998A CN201911019622.8A CN201911019622A CN110819998A CN 110819998 A CN110819998 A CN 110819998A CN 201911019622 A CN201911019622 A CN 201911019622A CN 110819998 A CN110819998 A CN 110819998A
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- hydrochloric acid
- acid additive
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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
- 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
Abstract
The invention provides a hydrochloric acid additive and a preparation method thereof, wherein the hydrochloric acid additive comprises the following components in percentage by mass: the corrosion inhibition auxiliary agent is 4-8%, the stabilizing agent is 0.5-1.5%, the film forming agent is 2-15%, the anionic surfactant is 4-20%, the nonionic surfactant is 0.1-10%, the carbon deposition removing agent is 10-20%, the propylene glycol is 0-10%, and the balance is distilled water. The hydrochloric acid additive provided by the invention can activate free acid in the pickling solution to the maximum extent, so that the active ingredients reach the maximum activity, the pickling time is shortened, light oil stains on the metal surface do not need to be removed, the metal surface can be directly pickled with oil for rust removal, the light oil stains and carbon deposits are removed during pickling, the use is more efficient, and the effect of increasing the yield is achieved.
Description
Technical Field
The invention relates to the field of metal surface treatment, in particular to a hydrochloric acid additive and a preparation method thereof.
Background
The process of removing scale and rust from the surface of steel using an acid solution is known as pickling. Is a method for cleaning metal surfaces. The article is generally immersed in an aqueous solution of sulfuric acid or the like to remove a thin film of oxide or the like on the metal surface. The process flow adopted at the present stage generally adopts chemical oil removal, flowing water washing, first acid washing, flowing water washing after the first acid washing, second acid washing, flowing water washing after the first acid washing and then transferring to the next procedure, the whole process is complex, and resource waste is easily caused.
The pickling rust removal is the most common procedure in the industries of metal processing, machining manufacturing and the like, the most pickling solution used at present is prepared from hydrochloric acid, and the hydrochloric acid has the advantages of high speed, good quality and the like when used for rust removal, but the hydrochloric acid is easy to volatilize, a large amount of acid mist can appear in the using process, not only can the physical damage be caused to operators, but also serious corrosion is caused to workshop equipment, and oil accumulation and carbon deposition on the surface of steel are difficult to remove.
Disclosure of Invention
The invention aims to provide a hydrochloric acid additive which can remove oil and carbon, is not easy to generate acid mist, has stable performance, simple operation, small dosage, high efficiency, no toxicity and no odor and no pollution to the environment, and a preparation method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that: a hydrochloric acid additive comprising (in mass percent): 4-8% of corrosion inhibition auxiliary agent, 0.5-1.5% of stabilizing agent, 2-15% of film forming agent, 4-20% of anionic surfactant, 0.1-10% of nonionic surfactant, 10-20% of carbon deposit removing agent, 0-10% of propylene glycol and the balance of distilled water.
Further, the carbon deposit removing agent is prepared from potassium perchlorate, sodium peroxide and potassium permanganate according to the mass ratio of 2: 2: 3, mixing and preparing.
Further, the corrosion inhibition auxiliary agent is one or more of sodium silicate, sodium metasilicate or citric acid.
Further, the stabilizer is one or more of EDTA, tartaric acid or tartrate.
Further, the film forming agent is C12-18Fatty alcohols or C12-18Fatty acids。
Further, the nonionic surfactant is one or more of polyoxyethylene octylphenol ether, polyoxyethylene lauryl ether and polyoxyethylene nonylphenol ether.
Further, the anionic surfactant is one or more of lauryl sulfate and phosphate.
Further, the tea leaf essence also comprises 0.1-10% of a freshener, wherein the freshener comprises tea tree essential oil and tea polyphenol.
The preparation method of the hydrochloric acid additive comprises the following steps:
the method comprises the following steps: weighing various raw materials according to the mass percentage, heating distilled water to 60 ℃, then sequentially adding a carbon deposit removing agent, propylene glycol, an anionic surfactant, a nonionic surfactant, a stabilizer and a corrosion inhibition aid, and fully stirring and dissolving uniformly to obtain a reaction liquid A;
step two: heating the film forming agent to a molten state within 25-60 ℃, and continuously stirring;
step three: slowly adding the molten film-forming agent obtained in the step two into the reaction liquid A under the stirring condition, continuously stirring to obtain a reaction liquid B, and continuously stirring until the viscosity of the reaction liquid B is not increased any more to obtain a reaction liquid C;
step four: and (4) cooling the reaction liquid C in the third step for 1 hour at room temperature, canning and sealing to obtain a finished product of the hydrochloric acid additive.
Further, when in use, the hydrochloric acid additive finished product in the fourth step and the mixed acid are mixed according to the volume ratio of 1: 80 to obtain a pickling solution, wherein the mixed acid is one or two of sulfuric acid, nitric acid, hydrochloric acid and hydrofluoric acid.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the hydrochloric acid additive provided by the invention is prepared by organically compounding efficient special fog-inhibiting components, synergistic components, oil-removing components, carbon-removing components and the like, is stable in performance, simple to operate, small in dosage, high in efficiency, free of toxicity and odor, free of environmental pollution, fast in rust removal, capable of removing oxide skins and bottom layer carbon deposition, safe to use and more suitable for the needs of users.
2. The hydrochloric acid additive provided by the invention is mainly used for treating the overall fog inhibition, carbon deposit removal and stubborn carbon deposit of high-concentration acid, can effectively inhibit the generation of acid fog, reduces the harm of the acid fog to human bodies, greatly improves the production environment, and is particularly suitable for hydrochloric acid, nitric acid and hydrofluoric acid systems.
Detailed Description
For a better understanding of the present invention, the present invention is further described below in conjunction with specific embodiments.
Example 1:
the hydrochloric acid additive comprises: 40g of sodium silicate, 5g of tartaric acid and C12-1420g of fatty alcohol, 40g of sodium lauryl sulfate, 1g of polyoxyethylene lauryl ether, 100g of carbon deposit remover and 794g of distilled water.
The preparation method of the hydrochloric acid additive comprises the following steps:
the method comprises the following steps: weighing various raw materials according to a standard, heating distilled water to 60 ℃, then sequentially adding 100g of a coke removing agent (the coke removing agent is prepared by mixing 30.47g of potassium perchlorate, 17.16g of sodium peroxide and 52.14g of potassium permanganate), 40g of sodium lauryl sulfate, 1g of polyoxyethylene lauryl ether, 40g of sodium silicate and 5g of tartaric acid, and fully stirring and dissolving uniformly to obtain a reaction solution A;
step two: under the stirring condition, 20gC12-14Slowly adding fatty alcohol into the reaction liquid A, continuously stirring to obtain a reaction liquid B, and continuously stirring until the viscosity of the reaction liquid B is not continuously increased to obtain a reaction liquid C;
step three: and cooling the reaction liquid C obtained in the step two for 1h to room temperature to obtain a finished hydrochloric acid additive, and mixing 100g of the hydrochloric acid additive with a mixed acid (the mixed acid is prepared by mixing 4857.5g of sulfuric acid, 1809.2g of hydrochloric acid and 1333.33g of water) to obtain a pickling solution, wherein the pickling solution is used as an experimental group A.
Example 2:
the hydrochloric acid additive comprises: 80g of citric acid, 15g of tartaric acid and C16-18150g of fatty alcohol, 200g of sodium lauryl sulfate, 100g of polyoxyethylene lauryl ether, 200g of a carbon deposit remover, 100g of propylene glycol and 155g of distilled water.
A hydrochloric acid additive and a preparation method thereof comprise the following steps:
the method comprises the following steps: weighing various raw materials according to a standard, heating distilled water to 60 ℃, then sequentially adding 200g of a coke removing agent (the coke removing agent is prepared by mixing 60.94g of potassium perchlorate, 34.32g of sodium peroxide and 104.28g of potassium permanganate), 100g of propylene glycol, 200g of sodium lauryl sulfate, 100g of polyoxyethylene lauryl ether, 80g of citric acid and 15g of tartaric acid, and fully stirring and dissolving uniformly to obtain a reaction solution A;
step two: 150gC is added16-18Heating fatty alcohol to 60 deg.C to C16-18The fatty alcohol is brought to a molten state;
step three: under the condition of stirring, adding C12-14Slowly adding fatty alcohol into the reaction liquid A, continuously stirring to obtain a reaction liquid B, and continuously stirring until the viscosity of the reaction liquid B is not increased any more to obtain a reaction liquid C;
step four: and (3) cooling the reaction liquid C in the third step for 1h, cooling to room temperature to obtain a finished hydrochloric acid additive, and mixing 100g of the hydrochloric acid additive with mixed acid (the mixed acid is prepared by mixing 4857.5g of sulfuric acid, 1809.2g of hydrochloric acid and 1333.33g of water) to obtain a pickling solution, wherein the pickling solution serves as an experimental group B.
Example 3:
the hydrochloric acid additive comprises: 40g of citric acid, 10g of tartaric acid and C16-1880g of fatty alcohol, 100g of sodium lauryl sulfate, 50g of polyoxyethylene lauryl ether, 100g of a carbon deposit remover, 50g of propylene glycol and 570g of distilled water.
A hydrochloric acid additive and a preparation method thereof comprise the following steps:
the method comprises the following steps: weighing various raw materials according to a standard, heating distilled water to 60 ℃, then sequentially adding 100g of a coke removing agent (the coke removing agent is prepared by mixing 30.47g of potassium perchlorate, 17.16g of sodium peroxide and 52.14g of potassium permanganate), 50g of propylene glycol, 100g of sodium lauryl sulfate, 50g of polyoxyethylene lauryl ether, 40g of citric acid and 10g of tartaric acid, and fully stirring and dissolving uniformly to obtain a reaction solution A;
step two: 80gC of the mixture16-18Heating fatty alcohol to 60 deg.C to C16-18The fatty alcohol is brought to a molten state;
step three: under the condition of stirring, adding C12-14Slowly adding fatty alcohol into the reaction liquid A, continuously stirring to obtain a reaction liquid B, and continuously stirring until the viscosity of the reaction liquid B is not increased any more to obtain a reaction liquid C;
step four: and (3) cooling the reaction liquid C in the third step for 1h, cooling to room temperature to obtain a finished hydrochloric acid additive, and mixing 100g of the hydrochloric acid additive with mixed acid (the mixed acid is prepared by mixing 4857.5g of sulfuric acid, 1809.2g of hydrochloric acid and 1333.33g of water) to obtain a pickling solution, wherein the pickling solution serves as an experimental group C.
Example 4:
mixing sulfuric acid and hydrochloric acid according to the mass ratio of 1:1 to prepare mixed acid, adding a certain amount of distilled water (the mass of the distilled water is 20% of the total mass of the sulfuric acid and the hydrochloric acid) into the mixed acid, and fully and uniformly mixing to prepare pickling solution serving as a control group.
The experimental group a, the experimental group B and the experimental group C prepared in examples 1 to 3 of the present invention were compared with the control group.
1. Measurement of washing time: the pickling solutions prepared in the experimental group A, the experimental group B, the experimental group C and the control group are added into a container, the 45# steel parts with the same size of carbon and oil deposits are added into the pickling solutions, the carbon and oil deposits of the four 45# steel parts are similar in degree, the time for cleaning the 45# steel parts by the four pickling solutions at 25 ℃ is measured, and the results are shown in table 1.
Table 1: cleaning time of 45# steel parts by three formula pickling solutions
| Experimental group A | Experimental group B | Experimental group C | Control group | |
| Time (min) | 25 | 20 | 10 | 30 |
As can be seen from Table 1, at 25 ℃, the cleaning effect of the pickling solutions in the experimental group A, the experimental group B and the control group on the 45# steel parts with slight carbon deposit and oil deposit is poor, probably because the concentration of the active ingredients in the experimental group A is low, the concentration of the active ingredients in the experimental group B is high, and the surfactant is difficult to emulsify well, so that the experimental group A and the experimental group B are difficult to wash off the carbon deposit and the oil stain on the surfaces of the 45# steel parts in a short time, and the cleaning effect of the pickling solutions in the control group on the 45# steel parts with slight carbon deposit and oil deposit is poor compared with the experimental group A, the experimental group B and the experimental group C, so that the hydrochloric acid additive provided by the invention can effectively improve the cleaning efficiency of the pickling solutions on the dirty metals.
2. Determination of corrosion amount: the pickling solutions prepared in the experimental group A, the experimental group B, the experimental group C and the control group are added into a container, clean 45# steel parts with the same size are added into the pickling solutions, the corrosion degree of the 45# steel parts by the four types of pickling solutions after the parts are placed for 1 hour at 25 ℃ is measured, and the results are shown in table 2.
Table 2: corrosion amount of three formula pickling solutions on 45# steel parts
| Experimental group A | Experimental group B | Experimental group C | Control group | |
| Amount of corrosion | Grade no more than 1 | Grade no more than 1 | Grade no more than 1 | Grade no more than 1 |
As can be seen from Table 2, at 25 ℃, the corrosion amounts of the pickling solutions of the experimental group A, the experimental group B and the experimental group C to the surfaces of the 45# steel parts are all qualified, and the pickling solution prepared by the hydrochloric acid additive provided by the invention can be used for the 45# steel parts without causing large corrosion.
3. And (3) determination of fog inhibition effect: adding pickling solutions prepared in an experimental group A, an experimental group B, an experimental group C and a control group into a container, adding 45# steel parts with carbon and oil deposits in the same size into the pickling solutions, heating the parts to 40 ℃, forming a foam layer with the thickness of 1cm on the liquid surface of the pickling solution after 2min, and observing whether acid mist is formed in the four pickling solutions in the pickling process, wherein the results are shown in table 3.
Table 3: fog inhibiting effect of three formula pickles
| Experimental group A | Experimental group B | Experimental group C | Control group | |
| Amount of acid mist | Has slight acid mist | No obvious acid mist | No obvious acid mist | A large amount of acid mist |
As can be seen from table 3, at 40 ℃, the pickling solutions in the experimental group B and the experimental group C have no obvious acid mist formation, while the pickling solution in the experimental group a has a slight acid mist, which may be due to the low concentration of the effective component in the experimental group a, resulting in the poor mist suppression effect of the hydrochloric acid additive, while the control group has no hydrochloric acid additive provided by the present invention added, resulting in more acid mist formation, and thus, the hydrochloric acid additive provided by the present invention can effectively suppress the formation of the acid mist in the pickling solution.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All changes, modifications and equivalents that may be made without departing from the spirit and scope of the invention are intended to be covered by this patent.
Claims (10)
1. A hydrochloric acid additive, characterized in that: the hydrochloric acid additive comprises the following components in percentage by mass: 4-8% of corrosion inhibition auxiliary agent, 0.5-1.5% of stabilizing agent, 2-15% of film-forming agent, 4-20% of anionic surfactant, 0.1-10% of nonionic surfactant, 10-20% of carbon deposit removing agent, 0-10% of propylene glycol and the balance of distilled water.
2. The hydrochloric acid additive according to claim 1, characterized in that: the carbon deposit removing agent is prepared from potassium perchlorate, sodium peroxide and potassium permanganate according to the mass ratio of 2: 2: 3, mixing and preparing.
3. The hydrochloric acid additive according to claim 1, characterized in that: the corrosion inhibition auxiliary agent is one or more of sodium silicate, sodium metasilicate or citric acid.
4. The hydrochloric acid additive according to claim 1, characterized in that: the stabilizer is one or more of EDTA, tartaric acid or tartrate.
5. The hydrochloric acid additive according to claim 1, characterized in that: the film-forming agent is C12-18Fatty alcohols or C12-18A fatty acid.
6. The hydrochloric acid additive according to claim 1, characterized in that: the nonionic surfactant is one or more of polyoxyethylene octylphenol ether, polyoxyethylene lauryl ether and polyoxyethylene nonylphenol ether.
7. The hydrochloric acid additive according to claim 1, characterized in that: the anionic surfactant is one or more of lauryl sulfate and phosphate.
8. The hydrochloric acid additive according to claim 1, characterized in that: also comprises 0.1-10% of aromatic agent, wherein the aromatic agent comprises tea tree essential oil and tea polyphenol.
9. A process for the preparation of the hydrochloric acid additive as defined in any of claims 1 to 8, characterized in that: the method comprises the following steps:
the method comprises the following steps: weighing various raw materials according to the mass percentage, heating distilled water to 60 ℃, then sequentially adding a carbon deposit removing agent, propylene glycol, an anionic surfactant, a nonionic surfactant, a stabilizer and a corrosion inhibition aid, and fully stirring and dissolving uniformly to obtain a reaction liquid A;
step two: heating the film forming agent to a molten state within 25-60 ℃, and continuously stirring;
step three: slowly adding the molten film-forming agent in the second step into the reaction liquid A under the stirring condition, continuously stirring to obtain a reaction liquid B, and continuously stirring until the viscosity of the reaction liquid B is not increased any more to obtain a reaction liquid C;
step four: and (4) cooling the reaction liquid C in the third step for 1 hour at room temperature, canning and sealing to obtain a finished product of the hydrochloric acid additive.
10. The method of preparing a hydrochloric acid additive as claimed in claim 9, wherein: when in use, the hydrochloric acid additive finished product in the fourth step and the mixed acid are mixed according to the volume ratio of 1: 80 to obtain a pickling solution, wherein the mixed acid is one or two of sulfuric acid, nitric acid, hydrochloric acid and hydrofluoric acid.
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| CN201910562186 | 2019-06-26 | ||
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101445939A (en) * | 2008-12-26 | 2009-06-03 | 中国人民解放军第五七一九工厂 | Water-base cleaning agent composition capable of quickly removing carbon deposit and heavy oil |
| CN101962779A (en) * | 2010-10-22 | 2011-02-02 | 大连三达奥克化学股份有限公司 | Acidic cleaner for removing oxide scale and oily carbon deposition mixing layer on surface of aluminum |
| CN106811757A (en) * | 2017-01-23 | 2017-06-09 | 江苏理工学院 | Acid mist inhibitor for hydochloric acid pickling and its application that a kind of normal temperature is used |
| KR101908320B1 (en) * | 2017-12-20 | 2018-10-17 | 주식회사 이노메탈 | Surface treatment liquid and method of surface treatment for roof rack using it |
| CN110616436A (en) * | 2019-09-20 | 2019-12-27 | 天津鑫来得科技有限公司 | Hydrochloric acid additive and preparation method thereof |
-
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- 2019-10-24 CN CN201911019622.8A patent/CN110819998A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445939A (en) * | 2008-12-26 | 2009-06-03 | 中国人民解放军第五七一九工厂 | Water-base cleaning agent composition capable of quickly removing carbon deposit and heavy oil |
| CN101962779A (en) * | 2010-10-22 | 2011-02-02 | 大连三达奥克化学股份有限公司 | Acidic cleaner for removing oxide scale and oily carbon deposition mixing layer on surface of aluminum |
| CN106811757A (en) * | 2017-01-23 | 2017-06-09 | 江苏理工学院 | Acid mist inhibitor for hydochloric acid pickling and its application that a kind of normal temperature is used |
| KR101908320B1 (en) * | 2017-12-20 | 2018-10-17 | 주식회사 이노메탈 | Surface treatment liquid and method of surface treatment for roof rack using it |
| CN110616436A (en) * | 2019-09-20 | 2019-12-27 | 天津鑫来得科技有限公司 | Hydrochloric acid additive and preparation method thereof |
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