CN1715450A - Acid corrosion inhibitor - Google Patents
Acid corrosion inhibitor Download PDFInfo
- Publication number
- CN1715450A CN1715450A CN 200410025576 CN200410025576A CN1715450A CN 1715450 A CN1715450 A CN 1715450A CN 200410025576 CN200410025576 CN 200410025576 CN 200410025576 A CN200410025576 A CN 200410025576A CN 1715450 A CN1715450 A CN 1715450A
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- CN
- China
- Prior art keywords
- water
- acid
- urotropine
- benzotriazole
- inhibiter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention belongs to the field of chemical technology, and discloses one kind of acid corrosion retardant. The acid corrosion retardant contains urotropine, thiourea, benzotriazole, mercaptobezothiazole, sodium silicate and water. The acid corrosion retardant of the present invention is developed based on that some acids and some metals have high corrosion retarding rate.
Description
Technical field
The invention belongs to chemical field, relate to a kind of chemical inhibiter, more specifically, the present invention relates to the inhibiter of using before a kind of metallic surface is cleaned.
Background technology
Though existing a lot of restrainer has corrosion mitigating effect preferably, most of effective inhibiter all has specificity to a certain extent, promptly only at several metals of certain several acid rust inhibition is arranged.The system that is cleaned often is made up of multiple metal, and is improper if inhibiter is selected for use, and its consequence is hardly imaginable.
The inventor develops a kind of inhibiter of being made up of polycomponent through further investigation, and it can have rust inhibition at multiple acid, multiple metal, the corrosion inhibition rate height.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of acid restrainer, contains urotropine, thiocarbamide, benzotriazole, mercaptobenzothiazole, water glass, water, and wherein the weight percent of each component is:
Urotropine: 25%～30%;
Thiocarbamide: 15%～20%;
Benzotriazole: 3%～6%;
Mercaptobenzothiazole: 5%～10%;
Water glass: 5%～10%;
Water: 35%～45%.
Preferably, wherein the weight percent of each component is:
Urotropine: 29%;
Thiocarbamide: 20%;
Benzotriazole: 6%;
Mercaptobenzothiazole: 5%;
Water glass: 5%;
Water: 35%.
Further, described acid restrainer can be used for entreating air-conditioner circulating water system, industrial cooling circulating water system, boiler systems.Acid restrainer of the present invention is carrying out adding use before acidity is cleaned to said system.Handle metal later through inhibiter of the present invention, in the acidic cleaner medium, can show excellent corrosion inhibition.
During use, add described acid restrainer from expansion tank or chemicals dosing plant or unlimited pond etc., concentration is controlled at about 1%; Continued the ON cycle water pump 0.5-2 hour at least, and guaranteed that inhibiter concentration in total system was even.Can be before adding inhibiter earlier with system's flushing with clean water, the ON cycle water pump is guaranteed the unobstructed no water clock of the recycle system.
This product is a kind of restrainer, can be applied in the multiple clean-out system media such as hydrochloric acid, nitric acid, EDTA, citric acid, but also be multiple metal material good inhibiter in the clean-out system medium.Urotropine is the good inhibiter of A3 steel in the prescription, and at a certain temperature, A3 steel corrosion inhibition rate in adding the 2mol/L hydrochloric acid of urotropine increases with the concentration of urotropine.BTA and MBT can be used as the inhibiter of chlorohydric acid pickling copper, are a kind of sedimentation type film inhibiter.BTA and MBT be composite to have good synergism, and they have better rust inhibition to copper in the hydrochloric acid, and the precipitation of formation is thin and fine and close, can not form throw out with the high volence metal ion in the solution again.Except copper being had the good rust inhibition, carbon steel also there is good rust inhibition.Water glass is the good inhibiter of aluminium alloy, and the adding of water glass and its hydrolysis in water can both make the pH value of solution raise.Therefore when sodium silicate silicate is low; promoted the passivation of aluminium alloy; corrosion inhibition increases; when concentration further increased, the pH value improved, and passive film begins dissolving; corrosion inhibition weakens; when the concentration of water glass increased again, the 3 valency aluminum ions that silicate and anodic reaction generated generated the aluminium silicate salt conversion film and play the covering effect, and alloy matrix aluminum is protected.
Embodiment
Embodiment 1
A kind of acid restrainer of the present invention contains urotropine, thiocarbamide, benzotriazole, mercaptobenzothiazole, water glass, water, and wherein the weight percent of each component is:
Urotropine: 25%～30%;
Thiocarbamide: 15%～20%;
Benzotriazole: 3%～6%;
Mercaptobenzothiazole: 5%～10%;
Water glass: 5%～10%;
Water: 35%～45%
Preferably, wherein the weight percent of each component is:
Urotropine: 29%;
Thiocarbamide: 20%;
Benzotriazole: 6%;
Mercaptobenzothiazole: 5%;
Water glass: 5%;
Water: 35%.
Described acid restrainer can be used for entreating air-conditioner circulating water system, industrial cooling circulating water system, boiler systems.The using method of acid restrainer of the present invention is as follows:
1, system is clean with flushing with clean water, and the ON cycle water pump is guaranteed the unobstructed no water clock of the recycle system.
2, add this product from expansion tank or chemicals dosing plant or unlimited pond etc., concentration is controlled at about 1%.
3, continued the ON cycle water pump 0.5-2 hour at least, guarantee that inhibiter concentration in total system is even.
4, add acidic cleaner.
Handle metal later through inhibiter of the present invention, in the acidic cleaner medium, can show excellent corrosion inhibition.
Claims (3)
1. acid restrainer, it is characterized in that: it contains urotropine, thiocarbamide, benzotriazole, mercaptobenzothiazole, water glass, water, and wherein the weight percent of each component is:
Urotropine: 25%～30%;
Thiocarbamide: 15%～20%;
Benzotriazole: 3%～6%;
Mercaptobenzothiazole: 5%～10%;
Water glass: 5%～10%;
Water: 35%～45%.
2. acid restrainer as claimed in claim 1 is characterized in that: the weight percent of its each component is:
Urotropine: 29%;
Thiocarbamide: 20%;
Benzotriazole: 6%;
Mercaptobenzothiazole: 5%;
Water glass: 5%;
Water: 35%.
3. acid restrainer according to claim 1 is characterized in that described acid restrainer is used for center air-condition circle water system, industrial cooling circulating water system and boiler systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025576 CN1715450A (en) | 2004-06-29 | 2004-06-29 | Acid corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025576 CN1715450A (en) | 2004-06-29 | 2004-06-29 | Acid corrosion inhibitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1715450A true CN1715450A (en) | 2006-01-04 |
Family
ID=35821600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410025576 Pending CN1715450A (en) | 2004-06-29 | 2004-06-29 | Acid corrosion inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1715450A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457974C (en) * | 2006-01-19 | 2009-02-04 | 重庆大学 | Metal pickling inhibitor and method for preparing the same |
| CN101078123B (en) * | 2007-06-22 | 2010-10-13 | 中国海洋石油总公司 | Water-base carried non-active nitric acid acidification inhibitor |
| CN102206826A (en) * | 2011-04-28 | 2011-10-05 | 上海交通大学 | Preparation method of compound copper corrosion inhibitor and surface treatment method by using compound copper corrosion inhibitor |
| CN102242367A (en) * | 2011-06-17 | 2011-11-16 | 陕西省石油化工研究设计院 | Multifunctional novel ethylene diamine tetraacetic acid (EDTA) cleaning corrosion inhibitor |
| CN103030225A (en) * | 2011-09-29 | 2013-04-10 | 中国石油化工股份有限公司 | Treatment process of circulating cooling water with leaked ammonia nitrogen |
| CN103319009A (en) * | 2012-03-21 | 2013-09-25 | 中国石油化工股份有限公司 | Method for applying desalinated seawater to circulating cooling water system |
| CN105088251A (en) * | 2014-05-09 | 2015-11-25 | 中国石油化工股份有限公司 | Corrosion inhibitor composition, applications thereof, and method using same to carry out pickling on equipment |
| CN105112926A (en) * | 2015-09-15 | 2015-12-02 | 青岛友诚高新技术有限公司 | Cleaning synergist for heating supply system |
| CN105220164A (en) * | 2015-10-21 | 2016-01-06 | 刘旸 | A kind of clean-out system of heat supply heating system |
| CN110016670A (en) * | 2019-05-21 | 2019-07-16 | 上海贵通新材料科技有限公司 | Antioxygen corrosion inhibiter |
| CN111032918A (en) * | 2017-09-01 | 2020-04-17 | 阿科玛法国公司 | Metal corrosion inhibitor |
| CN113045993A (en) * | 2021-03-25 | 2021-06-29 | 西南交通大学 | Polishing solution for processing ultra-smooth low-damage bearing steel surface and application thereof |
-
2004
- 2004-06-29 CN CN 200410025576 patent/CN1715450A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457974C (en) * | 2006-01-19 | 2009-02-04 | 重庆大学 | Metal pickling inhibitor and method for preparing the same |
| CN101078123B (en) * | 2007-06-22 | 2010-10-13 | 中国海洋石油总公司 | Water-base carried non-active nitric acid acidification inhibitor |
| CN102206826A (en) * | 2011-04-28 | 2011-10-05 | 上海交通大学 | Preparation method of compound copper corrosion inhibitor and surface treatment method by using compound copper corrosion inhibitor |
| CN102206826B (en) * | 2011-04-28 | 2013-02-27 | 上海交通大学 | Preparation method of compound copper corrosion inhibitor and surface treatment method by using compound copper corrosion inhibitor |
| CN102242367A (en) * | 2011-06-17 | 2011-11-16 | 陕西省石油化工研究设计院 | Multifunctional novel ethylene diamine tetraacetic acid (EDTA) cleaning corrosion inhibitor |
| CN103030225B (en) * | 2011-09-29 | 2015-03-25 | 中国石油化工股份有限公司 | Treatment process of circulating cooling water with leaked ammonia nitrogen |
| CN103030225A (en) * | 2011-09-29 | 2013-04-10 | 中国石油化工股份有限公司 | Treatment process of circulating cooling water with leaked ammonia nitrogen |
| CN103319009B (en) * | 2012-03-21 | 2015-06-17 | 中国石油化工股份有限公司 | Method for applying desalinated seawater to circulating cooling water system |
| CN103319009A (en) * | 2012-03-21 | 2013-09-25 | 中国石油化工股份有限公司 | Method for applying desalinated seawater to circulating cooling water system |
| CN105088251A (en) * | 2014-05-09 | 2015-11-25 | 中国石油化工股份有限公司 | Corrosion inhibitor composition, applications thereof, and method using same to carry out pickling on equipment |
| CN105112926A (en) * | 2015-09-15 | 2015-12-02 | 青岛友诚高新技术有限公司 | Cleaning synergist for heating supply system |
| CN105220164A (en) * | 2015-10-21 | 2016-01-06 | 刘旸 | A kind of clean-out system of heat supply heating system |
| CN105220164B (en) * | 2015-10-21 | 2017-12-15 | 刘旸 | A kind of cleaning agent of heat supply heating system |
| CN111032918A (en) * | 2017-09-01 | 2020-04-17 | 阿科玛法国公司 | Metal corrosion inhibitor |
| US11788192B2 (en) | 2017-09-01 | 2023-10-17 | Arkema France | Inhibitors of metal corrosion |
| CN110016670A (en) * | 2019-05-21 | 2019-07-16 | 上海贵通新材料科技有限公司 | Antioxygen corrosion inhibiter |
| CN110016670B (en) * | 2019-05-21 | 2021-06-22 | 上海贵通新材料科技有限公司 | Antioxidant corrosion inhibitor |
| CN113045993A (en) * | 2021-03-25 | 2021-06-29 | 西南交通大学 | Polishing solution for processing ultra-smooth low-damage bearing steel surface and application thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |