CN105755483B - Corrosion inhibiter for boiler acid pickling and preparation method thereof - Google Patents
Corrosion inhibiter for boiler acid pickling and preparation method thereof Download PDFInfo
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- CN105755483B CN105755483B CN201610206205.4A CN201610206205A CN105755483B CN 105755483 B CN105755483 B CN 105755483B CN 201610206205 A CN201610206205 A CN 201610206205A CN 105755483 B CN105755483 B CN 105755483B
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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
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a kind of for corrosion inhibiter of boiler acid pickling and preparation method thereof, belong to inhibiter technology field.The corrosion inhibiter for boiler acid pickling, is made of the raw material of following mass percent：Salicylic acid 5 30%, sodium metnylene bis-naphthalene sulfonate 7 25%, water-soluble imidazoline class corrosion inhibiter 10 20%, water-soluble benzotriazole 3 10%, surplus is deionized water.The preparation method is successively to be dissolved in the salicylic acid of formula ratio, sodium metnylene bis-naphthalene sulfonate, water-soluble imidazoline class corrosion inhibiter, water-soluble benzotriazole in deionized water at 30 50 DEG C, is stood after stirring evenly, obtains the corrosion inhibiter for boiler acid pickling.The present invention has performance stabilization, high temperature resistant, the characteristic of broad-spectrum high efficacy, can be used for a variety of mordants and play corrosion inhibition to various metals, be a kind of environmental type cleaning boiler special corrosion agent；Its preparation method is simple, easy to operate.
Description
Technical field
The present invention relates to a kind of for corrosion inhibiter of boiler acid pickling and preparation method thereof, belong to inhibiter technology field.
Background technology
The chemical cleaning of boiler is to maintain the cleaning of boiler heating surface inner surface, prevents heating surface from causing thing because of fouling, corrosion
Therefore to improve one of requisite measure of boiler water and steam quality, cleaning process is mainly to remove what is gathered on Boiler Metallic heating surface
Ferric oxide scale, calcium and magnesium incrustation scale, copper dirt, silicate scale and grease etc..The chemical cleaning of boiler is broadly divided into two kinds of alkali cleaning and pickling
Common chemical agent is hydrochloric acid, hydrofluoric acid, citric acid, nitric acid etc. in mode, wherein acid cleaning process, these mordants are cleaning
Also reaction can be generated with exposed metal while falling incrustation scale, cause corrosion of metal.During boiler acid pickling, general pickle
Flow velocity it is slower, and can usually carry out warming operation, in order to inhibit the corrosiveness of pickling, must add in pickle a certain amount of
Boiler acid pickling special corrosion agent.Restrainer various types domestic at present, classification feature are as follows：
(1) aldehyde-amine polycondensation species：It is synthesized by formaldehyde, aniline etc., synthesis technology is simple, water-soluble preferable, but has certain
Toxicity, the performance after storage are unstable；
(2) thiourea process：Corrosion inhibition is good, but water soluble characteristic is slightly poor, need to first be softened with a small amount of temperature during use
Water is tuned into paste, otherwise easily lumps；
(3) inorganic salts：Such as chromate, zinc salt, it is functional, but have certain toxicity, environment is harmful to.
There is also property is unstable, production cost is high, complex production process, environmental pollution etc. are asked for the common corrosion inhibiter of others
Topic, and only work to single sour or single material.
The content of the invention
The object of the present invention is to provide a kind of corrosion inhibiter for boiler acid pickling, have performance stabilization, high temperature resistant, wide spectrum height
The characteristic of effect can be used for a variety of mordants and play corrosion inhibition to various metals；Present invention simultaneously provides its preparation methods.
Corrosion inhibiter of the present invention for boiler acid pickling is made of the raw material of following mass percent：
Surplus is deionized water.
Preferably, it is made of the raw material of following mass percent：
Surplus is deionized water.
The water-soluble imidazoline class corrosion inhibiter is 2-methylimidazole quinoline, one kind in 2 isopropyl imidazole quinoline or two
Kind.
The preparation method of corrosion inhibiter of the present invention for boiler acid pickling is successively by the salicylic acid of formula ratio, Asia
Methyl sodium dinaphthalenesulfonate, water-soluble imidazoline class corrosion inhibiter, water-soluble benzotriazole are dissolved in deionized water at 30-50 DEG C
In, it is stood after stirring evenly, obtains the corrosion inhibiter for boiler acid pickling.
Beneficial effects of the present invention are as follows：
(1) raw material components of the invention have apparent synergistic function, suitable for hydrochloric acid, hydrofluoric acid, citric acid, nitre
The mordants such as acid；
(2) performance is stablized under hot conditions, can be used in the boiler acid pickling under the conditions of heating；
(3) present invention is a kind of environmental type restrainer, and raw material components are nontoxic, environmentally friendly；
(4) preparation method is simple and convenient, and each raw material components are proportionally added into reactor under room temperature and are stirred evenly,
Obtained product stability is good.
Specific embodiment
The present invention is described further with reference to embodiments.
Embodiment 1
The corrosion inhibiter for boiler acid pickling, is made of the raw material of following mass percent：
Surplus is deionized water.
The preparation method：It is successively by the salicylic acid of formula ratio, sodium metnylene bis-naphthalene sulfonate, water-soluble imidazoline season
Ammonium salt class corrosion inhibiter, water-soluble benzotriazole are dissolved at 45 DEG C in deionized water, are stood, are obtained for pot after stirring evenly
The corrosion inhibiter of stove pickling.
The corrosion inhibiter that the present embodiment is obtained is in dum boiler cleaning, and the material of dum boiler is carbon steel, cleaning solution
It is the hydrochloric acid that concentration is 4wt%, adds in the corrosion inhibiter for accounting for hydrochloric acid quality 0.2wt%, be linked into carbon steel lacing film and be detected.Through inspection
It surveys, corrosion rate 1.2g/m2H meets DL/T523-2007《Chemical cleaning corrosion inhibiter Performance Properties Evaluation index and experiment side
Method》Requirement.
Embodiment 2
The corrosion inhibiter for boiler acid pickling, is made of the raw material of following mass percent：
Surplus is deionized water.
The preparation method：It is successively by the salicylic acid of formula ratio, sodium metnylene bis-naphthalene sulfonate, water-soluble imidazoline season
Ammonium salt class corrosion inhibiter, water-soluble benzotriazole are dissolved at 40 DEG C in deionized water, are stood, are obtained for pot after stirring evenly
The corrosion inhibiter of stove pickling.
The corrosion inhibiter that the present embodiment is obtained is in direct current cooker cleaning, and the material of direct current cooker is carbon steel, cleaning solution
It is the hydrochloric acid that concentration is 2.5wt%, adds in the corrosion inhibiter for accounting for hydrochloric acid quality 0.15wt%, be linked into carbon steel lacing film and be detected.Through
Detection, corrosion rate 1.4g/m2H meets DL/T523-2007《Chemical cleaning corrosion inhibiter Performance Properties Evaluation index and experiment
Method》Requirement.
Claims (3)
1. a kind of corrosion inhibiter for boiler acid pickling, it is characterised in that：It is made of the raw material of following mass percent：
Salicylic acid 5-30%
Sodium metnylene bis-naphthalene sulfonate 7-25%
Water-soluble imidazoline class corrosion inhibiter 10-20%
Water-soluble benzotriazole 3-10%
Surplus is deionized water；
The water-soluble imidazoline class corrosion inhibiter is one or both of 2-methylimidazole quinoline or 2 isopropyl imidazole quinoline；
For the corrosion inhibiter of boiler acid pickling, suitable for hydrochloric acid, hydrofluoric acid, citric acid and nitric acid acidwashing agent.
2. the corrosion inhibiter according to claim 1 for boiler acid pickling, it is characterised in that：By the original of following mass percent
Material is made：
Salicylic acid 15-22%
Sodium metnylene bis-naphthalene sulfonate 10-18%
Water-soluble imidazoline class corrosion inhibiter 10-15%
Water-soluble benzotriazole 5-8%
Surplus is deionized water.
3. a kind of preparation method of any corrosion inhibiter for boiler acid pickling of claim 1 or 2, it is characterised in that：According to
It is secondary by the salicylic acid of formula ratio, sodium metnylene bis-naphthalene sulfonate, water-soluble imidazoline class corrosion inhibiter, water-soluble benzotriazole in
It is dissolved in deionized water at 30-50 DEG C, is stood after stirring evenly, obtain the corrosion inhibiter for boiler acid pickling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610206205.4A CN105755483B (en) | 2016-04-05 | 2016-04-05 | Corrosion inhibiter for boiler acid pickling and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610206205.4A CN105755483B (en) | 2016-04-05 | 2016-04-05 | Corrosion inhibiter for boiler acid pickling and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105755483A CN105755483A (en) | 2016-07-13 |
| CN105755483B true CN105755483B (en) | 2018-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610206205.4A Active CN105755483B (en) | 2016-04-05 | 2016-04-05 | Corrosion inhibiter for boiler acid pickling and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5407597A (en) * | 1994-04-22 | 1995-04-18 | Fremont Industries, Inc. | Galvanized metal corrosion inhibitor |
| CN1754987A (en) * | 2004-09-29 | 2006-04-05 | 上海万森水处理有限公司 | Acid corrosion inhibitor for boiler |
| CN101634030A (en) * | 2009-01-22 | 2010-01-27 | 湖南省湘电试验研究院有限公司 | Acid-cleaning inhibiter for cleaning boiler and use method thereof |
| CN103643237A (en) * | 2013-11-11 | 2014-03-19 | 青岛佰众化工技术有限公司 | Hydrochloric acid composite corrosion inhibitor |
| CN103882452A (en) * | 2014-03-13 | 2014-06-25 | 陕西省石油化工研究设计院 | Citric acid acid-pickling inhibitor |
-
2016
- 2016-04-05 CN CN201610206205.4A patent/CN105755483B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5407597A (en) * | 1994-04-22 | 1995-04-18 | Fremont Industries, Inc. | Galvanized metal corrosion inhibitor |
| CN1754987A (en) * | 2004-09-29 | 2006-04-05 | 上海万森水处理有限公司 | Acid corrosion inhibitor for boiler |
| CN101634030A (en) * | 2009-01-22 | 2010-01-27 | 湖南省湘电试验研究院有限公司 | Acid-cleaning inhibiter for cleaning boiler and use method thereof |
| CN103643237A (en) * | 2013-11-11 | 2014-03-19 | 青岛佰众化工技术有限公司 | Hydrochloric acid composite corrosion inhibitor |
| CN103882452A (en) * | 2014-03-13 | 2014-06-25 | 陕西省石油化工研究设计院 | Citric acid acid-pickling inhibitor |
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| Publication number | Publication date |
|---|---|
| CN105755483A (en) | 2016-07-13 |
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