CN102127767A - Composite corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof - Google Patents
Composite corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof Download PDFInfo
- Publication number
- CN102127767A CN102127767A CN2010100011879A CN201010001187A CN102127767A CN 102127767 A CN102127767 A CN 102127767A CN 2010100011879 A CN2010100011879 A CN 2010100011879A CN 201010001187 A CN201010001187 A CN 201010001187A CN 102127767 A CN102127767 A CN 102127767A
- Authority
- CN
- China
- Prior art keywords
- acetic acid
- acid solution
- corrosion inhibitor
- composite corrosion
- corrosion
- Prior art date
- 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.)
- Pending
Links
Abstract
The invention relates to a composite corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and an application thereof. The composite corrosion inhibitor comprises soluble silicate and dendric macromolecular silicon inhibitor PAMAM-1.0 (polyamidoamine-1.0), wherein the structural formula of the dendric macromolecular silicon inhibitor PAMAM-1.0 is provided. The composite corrosion inhibitor can be added into to-be-treated acetic acid solution to well inhibit the corrosion of the carbon steel in contact with acetic acid solution, particularly to inhibit the corrosion of process water to carbon steel equipment in methanol-to-olefins (MTO) process. The composite corrosion inhibitor provided by the invention has good corrosion inhibition effect, and does not generate adverse effect on the technological process.
Description
Technical field
The present invention relates to a kind of be used to suppress acetic acid solution medium carbon steel corrosive composite corrosion inhibitor and application thereof, particularly a kind of composite corrosion inhibitor and application thereof that is used to suppress methanol-to-olefins (MTO) process water medium carbon steel equipment corrosion.
Background technology
Along with expanding economy with to the growth day by day of low-carbon alkene demand, be faced with more and more serious short situation as resources such as the petroleum naphtha of olefin production raw material, solar oils.Therefore, the chemical industry route of non-oil resource production alkene begins to be subjected to general attention.Methanol-to-olefins (MTO) technology be a kind of be the chemical industry technology of raw material production low-carbon alkene with coal-based or Sweet natural gas base synthetic methyl alcohol, improving ensureing the low-carbon alkene stable supplying of its Technology is significant.
The process water of methanol-to-olefins process is meant and is used to the recirculated water that washs in the tripping device that wherein contain acetate, the pH value is between 3.0～6.0 usually; And temperature is higher, generally at 70.0 ℃～90.0 ℃.The carbon steel equipment corrosion that contacts with process water is serious, influences safety, the steady running of device.
CN1393411A provides a kind of composite corrosion inhibitor that is used for deionized water, it comprises deionized water, polyetheramides and soluble silicate, wherein, the effect of polyetheramides is the ion and the atom on chelated mineral surface, forms hydrophobic barrier (corrosion inhibition) in the metallic surface.CN1150181A discloses the Si series corrosion inhibitor that is used for soft water airtight circulating cooling system, and this inhibiter is formed by water glass, multi-component copolymer sodium polyacrylate, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, mercaptobenzothiazole or the compound compatibility of benzotriazole.Be applicable to softening water or de-mineralized water, the water-cooling system that water temperature is 0 ℃～80 ℃ can prevent spot corrosion and produce silicate scale.CN101125713A discloses the inhibiter that is used for closed circulation water system, and this inhibiter contains effective constituents such as borax, caustic alkali, silicate, nitrite, 2-mercaptobenzothiazole.Can effectively protect ferrous metal, copper and copper alloy etc.CN101307449A discloses the silicon-tungsten corrosion inhibitor that is used for circulation cooling system of demineralized water, its chemical ingredients by silicate, tungstate, phosphoric acid salt, copper inhibitor is compound constitutes, be applicable to that the circulation cooling system of demineralized water inhibition handles, have efficient, low dosage, nontoxic, free of contamination characteristics.As can be seen: prior art does not also propose a kind of acetic acid solution medium carbon steel corrosive inhibiter that is used to suppress.
Summary of the invention
The object of the present invention is to provide a kind of inhibiter, to solve the corrosion of Carbon Steel problem that contacts with acetic acid solution.
For achieving the above object, the invention provides a kind of composite corrosion inhibitor, it is made up of soluble silicate and a kind of dendritic macromole resistance silicea PAMAM-1.0, and the structural formula of described dendritic macromole resistance silicea PAMAM-1.0 is:
Soluble silicate of the present invention is water glass and/or potassium silicate, is preferably water glass.
Composite corrosion inhibitor of the present invention is with respect to pending acetic acid solution, and the effective concentration of silicate is (with SiO
2Meter) be 50～200mg/L, the effective concentration (in active matter content) of resistance silicea PAMAM-1.0 is 20～100mg/L, and the effective concentration of preferred silicate is (with SiO
2Meter) be 80～150mg/L, the effective concentration (in active matter content) of resistance silicea PAMAM-1.0 is 40～80mg/L.
When preparing composite corrosion inhibitor of the present invention, the reinforced order of every kind of component is unimportant.Silicate, resistance silicea and water are made into a kind of solution of composite corrosion inhibitor by predetermined mixed.As can be earlier with these two kinds of compositions wiring solution-forming remix separately, also can earlier resistance silicea PAMAM-1.0 or silicate be dissolved in certain water gaging, add silicate or resistance silicea again, treat that solid all after the dissolving, adds water and make inhibiter.
Composite corrosion inhibitor of the present invention is added in the pending acetic acid solution, can suppress the corrosion of Carbon Steel that contacts with acetic acid solution well, especially can be suppressed at of the corrosion of the process water of methanol-to-olefins process to carbon steel equipment, corrosion mitigating effect is good, and can not produce detrimentally affect to technological process.The temperature of acetic acid solution of the present invention can change in wide range, as can in 3.0～6.0 scopes, changing for 10～90 ℃, pH value, for process water in the methanol-to-olefins process, its temperature generally changes in 70～90 ℃ of scopes, and the pH value changes in 3.0～6.0 scopes.
Embodiment
The following examples and Comparative Examples will help to illustrate respectively inhibiter involved in the present invention to the corrosion mitigating effect of acetic acid solution medium carbon steel and the resistance silicea PAMAM-1.0 in the inhibiter inhibition effect to colloid silicon, but not limit to its scope.
Embodiment 1
Taking by weighing 3.0g resistance silicea PAMAM-1.0 is dissolved in the 40g deionized water; Take by weighing the 10.2g anhydrous sodium metasilicate, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 1000mg/L with the inhibiter for preparing, the effective concentration of acetic acid solution mesosilicic acid sodium is (with SiO
2Meter) be 50mg/L, the effective concentration (in active matter content) of resistance silicea PAMAM-1.0 is 30mg/L.
Embodiment 2
Taking by weighing 3.0g resistance silicea PAMAM-1.0 is dissolved in the 40g deionized water; Take by weighing 25.7g anhydrous silicic acid potassium, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 1000mg/L with the inhibiter for preparing, the effective concentration of acetic acid solution mesosilicic acid potassium is (with SiO
2Meter) be 100mg/L, the effective concentration (in active matter content) of resistance silicea PAMAM-1.0 is 30mg/L.
Embodiment 3
Taking by weighing 4.0g resistance silicea PAMAM-1.0 is dissolved in the 40g deionized water; Take by weighing the 20.3g anhydrous sodium metasilicate, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 1000mg/L with the inhibiter for preparing, the effective concentration of acetic acid solution mesosilicic acid sodium is (with SiO
2Meter) be 100mg/L, the effective concentration (in active matter content) of resistance silicea PAMAM-1.0 is 40mg/L.
Embodiment 4
Taking by weighing 2.5g resistance silicea PAMAM-1.0 is dissolved in the 40g deionized water; Take by weighing 19.3g anhydrous silicic acid potassium, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 2000mg/L with the inhibiter for preparing, the effective concentration of acetic acid solution mesosilicic acid potassium is (with SiO
2Meter) be 150mg/L, the effective concentration (in active matter content) of resistance silicea PAMAM-1.0 is 50mg/L.
Embodiment 5
Taking by weighing 2.5g resistance silicea PAMAM-1.0 is dissolved in the 40g deionized water; Take by weighing the 20.3g anhydrous sodium metasilicate, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 2000mg/L with the inhibiter for preparing, the effective concentration of acetic acid solution mesosilicic acid sodium is (with SiO
2Meter) be 200mg/L, the effective concentration (in active matter content) of resistance silicea PAMAM-1.0 is 50mg/L.
Embodiment 6
Taking by weighing 3.5g resistance silicea PAMAM-1.0 is dissolved in the 40g deionized water; Take by weighing 25.7g anhydrous silicic acid potassium, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 2000mg/L with the inhibiter for preparing, the effective concentration of acetic acid solution mesosilicic acid potassium is (with SiO
2Meter) be 200mg/L, the effective concentration (in active matter content) of resistance silicea PAMAM-1.0 is 70mg/L.
Comparative Examples 1
Taking by weighing 16.7g polyacrylic acid Scale inhibitors (solid content is 30%) is dissolved in the 40g deionized water; Take by weighing the 20.3g anhydrous sodium metasilicate, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 2000mg/L with the inhibiter for preparing, the effective concentration of acetic acid solution mesosilicic acid sodium is (with SiO
2Meter) be 200mg/L, the effective concentration of polyacrylic acid Scale inhibitors (in solid content) is 100mg/L.
Comparative Examples 2
Taking by weighing 16.7g vinylformic acid/2-acrylamide-2-methyl propane sulfonic acid copolymer Scale inhibitors (be called for short co-polymer of sulfonate, solid content is 30%) is dissolved in the 40g deionized water; Take by weighing 20.3g anhydrous silicic acid potassium, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 2000mg/L with the inhibiter for preparing, the effective concentration of acetic acid solution mesosilicic acid potassium is (with SiO
2Meter) be 200mg/L, the effective concentration of co-polymer of sulfonate (in solid content) is 100mg/L.
Comparative Examples 3
Taking by weighing the 5g Sodium hexametaphosphate 99 is dissolved in the 40g deionized water; Take by weighing the 6.6g Zinc vitriol, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 1000mg/L with the inhibiter for preparing, the effective concentration of Sodium hexametaphosphate 99 is 50mg/L in the acetic acid solution, and the effective concentration of zinc sulfate is (with Zn
2+Meter) be 15mg/L.
Comparative Examples 4
Taking by weighing 10g 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (active matter content is 50%) is dissolved in the 40g deionized water; Take by weighing the 6.6g Zinc vitriol, add in the above-mentioned solution, stirring is fully dissolved it; Adding deionized water to solution weight is 100g, promptly obtains the 100g inhibiter of required preparation.
When adding in acetic acid solution by the concentration of 1000mg/L with the inhibiter for preparing, the effective concentration of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is 50mg/L in the acetic acid solution, and the effective concentration of zinc sulfate is (with Zn
2+Meter) be 15mg/L.
According to State Standard of the People's Republic of China GB/T 18175-2000 " mensuration of water conditioner corrosion inhibition-rotary hanging plate method ", above embodiment and the described inhibiter of Comparative Examples are rotated coupon corrosion test.Subjects is the deionized water solution or the MTO device technique water of acetate, and pH value and temperature are as shown in table 1.The test piece rotating speed is 75 rev/mins, and test period is 48 hours, and the lacing film material is the 20# carbon steel.Test-results sees Table 1.
The effect of table 1 inhibiter
Annotate: be with in the table
*Embodiment and the subjects of Comparative Examples be MTO device technique water, the subjects of remaining embodiment and Comparative Examples is the deionized water solution of acetate.
Test-results in the table 1 shows that composite corrosion inhibitor of the present invention has good corrosion inhibiting ability to the carbon steel in the acetic acid solution, and its corrosion mitigating effect obviously is better than Comparative Examples 3 and the 4 described phosphor corrosion inhibitors that contain.The stable performance of water glass corrosion inhibiting ability depends on whether to keep higher silicate concentration in the solution.Comparative Examples 1 and 2 adopts polyacrylic acid and the co-polymer of sulfonate stablizer as silicate respectively, and poor effect directly causes the corrosion mitigating effect of inhibiter to descend.Comprise dendritic macromole resistance silicea PAMAM-1.0 in embodiment 1～6 described inhibiter, the inhibition ability good to being formed with of colloid silicon under the acidic conditions, can in acetic acid solution, keep higher silicate concentration, thereby guarantee the corrosion mitigating effect of inhibiter.
Claims (10)
1. composite corrosion inhibitor that is used to suppress acetic acid solution medium carbon steel equipment corrosion, it is made up of soluble silicate and a kind of dendritic macromole resistance silicea, and described dendritic macromole hinders the silicea structural formula and is:
2. composite corrosion inhibitor according to claim 1 is characterized in that described soluble silicate is water glass and/or potassium silicate.
3. composite corrosion inhibitor according to claim 2 is characterized in that described soluble silicate is a water glass.
4. according to each described composite corrosion inhibitor of claim 1-3, it is characterized in that the effective concentration of silicate is (with SiO with respect to the processing acetic acid solution for the treatment of
2Meter) be 50～200mg/L.
5. composite corrosion inhibitor according to claim 4 is characterized in that with respect to the processing acetic acid solution for the treatment of, the effective concentration of silicate is 80～150mg/L.
6. according to each described composite corrosion inhibitor of claim 1-5, it is characterized in that the effective concentration (in active matter content) of dendritic macromole resistance silicea is 20～100mg/L, is preferably 40～80mg/L with respect to pending acetic acid solution.
7. according to each described composite corrosion inhibitor of claim 1-6, the temperature that it is characterized in that acetic acid solution is 10～90 ℃, and the pH value is 3.0～6.0.
8. the purposes of each described composite corrosion inhibitor of claim 1-7 is characterized in that the described composite corrosion inhibitor of claim 1-7 is added in the pending acetic acid solution, with the corrosion of Carbon Steel that suppresses to contact with acetic acid solution.
9. purposes according to claim 8 is characterized in that acetic acid solution is the process water in the methanol-to-olefins process.
10. according to Claim 8 or 9 described purposes, the temperature that it is characterized in that described acetic acid solution is 10～90 ℃, and the pH value is 3.0～6.0, and the temperature of the process water in the preferred described methanol-to-olefins process is 70～90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100011879A CN102127767A (en) | 2010-01-15 | 2010-01-15 | Composite corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100011879A CN102127767A (en) | 2010-01-15 | 2010-01-15 | Composite corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102127767A true CN102127767A (en) | 2011-07-20 |
Family
ID=44266027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100011879A Pending CN102127767A (en) | 2010-01-15 | 2010-01-15 | Composite corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102127767A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214107A (en) * | 2013-04-10 | 2013-07-24 | 同济大学 | Silicate and polyamidoamine composite and environment-friendly corrosion inhibitor applied to deionized water circulating cooling system |
| WO2018036806A1 (en) * | 2016-08-23 | 2018-03-01 | Henkel Ag & Co. Kgaa | USE OF AN ADHESION PROMOTER OBTAINABLE AS THE REACTION PRODUCT OF A DI- OR POLYAMINE WITH α,β-UNSATURATED CARBOXYLIC ACID DERIVATIVES FOR METAL SURFACE TREATMENT |
-
2010
- 2010-01-15 CN CN2010100011879A patent/CN102127767A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214107A (en) * | 2013-04-10 | 2013-07-24 | 同济大学 | Silicate and polyamidoamine composite and environment-friendly corrosion inhibitor applied to deionized water circulating cooling system |
| WO2018036806A1 (en) * | 2016-08-23 | 2018-03-01 | Henkel Ag & Co. Kgaa | USE OF AN ADHESION PROMOTER OBTAINABLE AS THE REACTION PRODUCT OF A DI- OR POLYAMINE WITH α,β-UNSATURATED CARBOXYLIC ACID DERIVATIVES FOR METAL SURFACE TREATMENT |
| KR20190040291A (en) * | 2016-08-23 | 2019-04-17 | 헨켈 아게 운트 코. 카게아아 | For the treatment of metal surfaces of adhesion promoters which can be obtained as reaction products of di- or polyamines with alpha, beta -unsaturated carboxylic acid derivatives |
| CN109715853A (en) * | 2016-08-23 | 2019-05-03 | 汉高股份有限及两合公司 | The adhesion promotor that can be used as the reaction product acquisition of diamines or polyamines and alpha, beta-unsaturated carboxylic acid derivative is used for the purposes of Treatment of Metal Surface |
| JP2019532130A (en) * | 2016-08-23 | 2019-11-07 | ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェンＨｅｎｋｅｌ ＡＧ ＆ Ｃｏ．ＫＧａＡ | Use of adhesion promoters obtained as reaction products of di- or polyamines with α, β-unsaturated carboxylic acid derivatives for metal surface treatment |
| CN109715853B (en) * | 2016-08-23 | 2021-08-24 | 汉高股份有限及两合公司 | Use of adhesion promoters obtainable as reaction products of diamines or polyamines with alpha, beta-unsaturated carboxylic acid derivatives for the treatment of metal surfaces |
| JP7035021B2 (en) | 2016-08-23 | 2022-03-14 | ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェン | Use of adhesion promoters obtained as reaction products of di- or polyamines with α, β-unsaturated carboxylic acid derivatives for metal surface treatment |
| KR102472747B1 (en) * | 2016-08-23 | 2022-11-30 | 헨켈 아게 운트 코. 카게아아 | Use of an adhesion promoter obtainable as a reaction product of a di- or polyamine with an α,β-unsaturated carboxylic acid derivative for the treatment of metal surfaces |
| US11535940B2 (en) | 2016-08-23 | 2022-12-27 | Henkel Ag & Co. Kgaa | Use of an adhesion promoter obtainable as a reaction product of a di- or poly amine with α,β-unsaturated carboxylic acid derivatives for metal surface treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7244372B2 (en) | Method for increasing stability of cooling fluid for engine | |
| US7407599B2 (en) | Acid based antifreeze composition | |
| AU2002256500A1 (en) | Monocarboxylic acid based antifreeze composition | |
| EP1230317A1 (en) | Antifreeze concentrates on the basis of dicarboxylic acids, molybdate and triazoles or thiazoles and coolant compositions containing these concentrates | |
| CN103130359A (en) | Corrosion and scale inhibition method for soft water closed circulation system | |
| CN100590170C (en) | Automobile engine cooling liquid and its preparing process | |
| CN107987803B (en) | Phosphorus-containing engine coolant and preparation method thereof | |
| CN105036363A (en) | Composite corrosion inhibitor suitable for desalted water and preparation method | |
| CN109652809B (en) | Mixed corrosion inhibitor for glycol water-based cooling liquid | |
| CN102127767A (en) | Composite corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof | |
| CN114891486A (en) | Low-conductivity automobile fuel cell antifreezing coolant and production method thereof | |
| CN105624687A (en) | Compound corrosion inhibitor for internal cooling water hollow copper conductor of electric generator and application of compound corrosion inhibitor | |
| EP1159372B1 (en) | Monocarboxylic acid based antifreeze composition for diesel engines | |
| US4686059A (en) | Antimony tartrate corrosion inhibitive composition for coolant systems | |
| CN102127768B (en) | Corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof | |
| WO2000050532A1 (en) | Monocarboxylic acid based antifreeze composition for diesel engines | |
| CN110699047B (en) | Propylene glycol type cold carrier liquid | |
| CN103214107A (en) | Silicate and polyamidoamine composite and environment-friendly corrosion inhibitor applied to deionized water circulating cooling system | |
| JPH05105871A (en) | Coolant composition | |
| US6290870B1 (en) | Monocarboxylic acid based antifreeze composition for diesel engines | |
| KR100962792B1 (en) | Antifreeze liquid composition having high stabilization of heat-oxidation | |
| CN112574721A (en) | Multi-effect environment-friendly glycol type automobile cooling liquid and preparation method thereof | |
| CN106245037B (en) | A kind of phase change vacuum boiler antiseptic corrosion inhibitor | |
| KR101546935B1 (en) | Feed Water Composition for Boiler | |
| CN108130538A (en) | A kind of green high-efficient water treatment agent suitable for cold water in convertor station aluminum-system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110720 |