CN103710712A - Seawater corrosion inhibitor - Google Patents
Seawater corrosion inhibitor Download PDFInfo
- Publication number
- CN103710712A CN103710712A CN201310677580.3A CN201310677580A CN103710712A CN 103710712 A CN103710712 A CN 103710712A CN 201310677580 A CN201310677580 A CN 201310677580A CN 103710712 A CN103710712 A CN 103710712A
- Authority
- CN
- China
- Prior art keywords
- corrosion inhibitor
- seawater
- corrosion
- water
- sea water
- 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
Images
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a complex which can be added into the water, and especially relates to a corrosion inhibitor which can be added into the seawater. The seawater corrosion inhibitor is composed of polyaspartic acid, benzotriazole, zinc sulfate heptahydrate, 2-hydroxyphosphonoacetic acid, and hexadecyldimethyl(2-sulfite)ethyl ammonium according to a mass ratio of 5:5:3:3:1. The seawater corrosion inhibitor has a very good corrosion inhibiting effect for carbon steel and yellow copper in seawater, also has a very good biodegradable property, and thus is environment-friendly.
Description
Technical field
The present invention relates to a kind of title complex being added to the water, relate in particular to a kind of inhibiter adding in seawater.
Background technology
Along with the worsening shortages of Freshwater resources, utilize seawater to replace fresh water significant as the make up water of recirculating cooling water system.Seawater, as industrial circulating cooling water make up water, can effectively be alleviated the contradiction between shortage of fresh water and industrial fast development.Due to seawater component complexity and salts contg high, easily cause pipeline in circulating water system and heat-exchange equipment corrosion, therefore solve pipeline and the corrosion of equipment in seawater is the key of seawater utilization.Control conventional in recirculating cooling water system has with the method that prevents metal equipment corrosion the corrosion resistant material of employing, adopts water coolant protective system apply, improve water coolant operation pH and add corrosion inhibitor.Wherein adopt corrosion resistant material can effectively protect hardware, but its front-end fee is with high; Protective system cladding process complex process, is applicable in system local anticorrosion; Improving water coolant pH can make carbon steel be easy to passivation; Adding inhibiter can protect total system, and economical and practical, is current widely used method.
In circulating water cooling system material, the application of carbon steel and copper material is comparatively general, but at present domesticly to act on the multi-functional seawater inhibiter of carbon steel and copper material simultaneously, studies also less.
Poly aspartic acid (PASP) is biodegradable, good stability, is a kind of good water treatment agent, but unsatisfactory for the corrosion mitigating effect of seawater separately.
Summary of the invention
The present invention aims to provide a kind of corrosion inhibitor of sea water that can manifest good corrosion mitigating effect that uses in seawater.
Corrosion inhibitor of sea water of the present invention, the poly aspartic acid that is 5:5:3:3:1 by mass ratio, benzotriazole, Zinc Sulphate Heptahydrate, 2-HPAA, hexadecyldimethyl benzyl ammonium (2 one sulfurous acid) ethyl ammonium form.
Corrosion inhibitor of sea water of the present invention is that raw material by aforementioned proportion mixes and makes.
Corrosion inhibitor of sea water of the present invention, the consumption by 100-150mg/L during use adds in seawater.
To carbon steel and brass, the corrosion in seawater all has good restraining effect to corrosion inhibitor of sea water of the present invention, and himself also has good biodegradability, very friendly to environment.
Accompanying drawing explanation
Fig. 1 is the biodegradability figure of corrosion inhibitor of sea water.
Embodiment
Embodiment mono-
1, prepare 5 kilograms of poly aspartic acids, 5 kilograms of benzotriazoles, 3 kilograms of Zinc Sulphate Heptahydrates, 3 kilograms of 2-HPAAs and 1 kilogram of hexadecyldimethyl benzyl ammonium (2 one sulfurous acid) ethyl ammonium.
2, above-mentioned raw materials is mixed, obtain corrosion inhibitor of sea water of the present invention.
3, detect the corrosion inhibition of corrosion inhibitor of sea water of the present invention.
Get seawater, its water quality is: chlorion 1.70 * 10
4mg/L, Ca
2+935.44 mg/L, total hardness 5 510.12 mg/L, total alkalinity 162.19 mg, L, specific conductivity 3.244x10
-2s/cm, pH=7.65.
In seawater, add corrosion inhibitor of sea water of the present invention, addition is 100-150mg/L.
Adopt rotary hanging plate method to measure.Lacing film material is A3 carbon steel and H62 brass, and experimental temperature is 40 ℃, and lacing film rotating speed is 75r/min, and experimental period is 72 hours.
Corrosion rate=[87600 * (quality of the rear lacing film of the quality-experiment of lacing film before experiment)]/(density * experimental period of the surface-area * lacing film of lacing film).
Corrosion inhibition rate=[corrosion rate of (corrosion rate of the corrosion rate-lacing film of blank lacing film)/blank lacing film] * 100%.
Result is as following table:
4, detect the biodegradability of corrosion inhibitor of sea water of the present invention
Adopt biological shaking table laboratory method, according to COD, measure the biological degradability of inhibiter.Adopt potassium permanganate process (GB/T 15456-1995) to measure COD.
Degradation rate=[1-(t is added with the COD in the COD-t blank test constantly in the reaction of inoculation liquid of medicament constantly)/(being added with the initial COD of the initial COD-blank assay of reaction of inoculation liquid of medicament)] * 100%.
Result as shown in Figure 1.Presentation of results corrosion inhibitor of sea water of the present invention has good biodegradability, and the biological degradation rate of the 28th day can reach 82.6%.
Claims (1)
1. corrosion inhibitor of sea water, poly aspartic acid, benzotriazole, Zinc Sulphate Heptahydrate, 2-HPAA, hexadecyldimethyl benzyl ammonium (2 one sulfurous acid) ethyl ammonium that to it is characterized in that by mass ratio be 5:5:3:3:1:1 form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310677580.3A CN103710712A (en) | 2013-12-13 | 2013-12-13 | Seawater corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310677580.3A CN103710712A (en) | 2013-12-13 | 2013-12-13 | Seawater corrosion inhibitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103710712A true CN103710712A (en) | 2014-04-09 |
Family
ID=50404052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310677580.3A Pending CN103710712A (en) | 2013-12-13 | 2013-12-13 | Seawater corrosion inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103710712A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017180328A1 (en) * | 2016-04-14 | 2017-10-19 | Nch Corporation | Composition and method for inhibiting corrosion |
| US10280520B2 (en) | 2014-08-08 | 2019-05-07 | Nch Corporation | Composition and method for treating white rust |
| CN112553610A (en) * | 2019-09-10 | 2021-03-26 | 天津大学 | Carbon steel surface in-situ self-assembly metal-polyaspartic acid anticorrosive film and preparation method and application thereof |
| US11085118B2 (en) | 2016-04-14 | 2021-08-10 | Nch Corporation | Composition and method for inhibiting corrosion and scale |
| US11104587B2 (en) | 2016-04-14 | 2021-08-31 | Nch Corporation | System and method for automated control, feed, delivery verification, and inventory management of corrosion and scale treatment products for water systems |
-
2013
- 2013-12-13 CN CN201310677580.3A patent/CN103710712A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10280520B2 (en) | 2014-08-08 | 2019-05-07 | Nch Corporation | Composition and method for treating white rust |
| WO2017180328A1 (en) * | 2016-04-14 | 2017-10-19 | Nch Corporation | Composition and method for inhibiting corrosion |
| CN109072452A (en) * | 2016-04-14 | 2018-12-21 | Nch公司 | For inhibiting the composition and method of corrosion |
| US10351453B2 (en) | 2016-04-14 | 2019-07-16 | Nch Corporation | Composition and method for inhibiting corrosion |
| CN109072452B (en) * | 2016-04-14 | 2020-08-07 | Nch公司 | Compositions and methods for inhibiting corrosion |
| US11085118B2 (en) | 2016-04-14 | 2021-08-10 | Nch Corporation | Composition and method for inhibiting corrosion and scale |
| US11104587B2 (en) | 2016-04-14 | 2021-08-31 | Nch Corporation | System and method for automated control, feed, delivery verification, and inventory management of corrosion and scale treatment products for water systems |
| US11661365B2 (en) | 2016-04-14 | 2023-05-30 | Nch Corporation | Composition and method for inhibiting corrosion |
| CN112553610A (en) * | 2019-09-10 | 2021-03-26 | 天津大学 | Carbon steel surface in-situ self-assembly metal-polyaspartic acid anticorrosive film and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103819008B (en) | Composition for scale and corrosion inhibitor, scale and corrosion inhibitor, and application of scale and corrosion inhibitor | |
| CN102351328B (en) | Green total organic carbon steel scale and corrosion inhibitor for circulating cooling water system | |
| CN104891684B (en) | Without phosphorus composite slow-corrosion scale resistor for bitter recirculated water and preparation method thereof | |
| CN103449618B (en) | Non-phosphorus composite corrosion and scale inhibitor suitable for industrial circulating cooling water | |
| CN103710712A (en) | Seawater corrosion inhibitor | |
| CN103420497B (en) | Non-phosphorous corrosion and scale inhibitor containing lignosulfonate and application thereof | |
| WO2015101124A1 (en) | Phosphorous-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning, and method of preparing said inhibitor | |
| CN104556428A (en) | Composition for corrosion inhibition and scale inhibition and application of composition | |
| CN101746903B (en) | Phosphorus-free composite water treatment agent | |
| CN103910440B (en) | A kind of research of non-phosphorus scale inhibitor | |
| CN102408162B (en) | Phosphorus-free corrosion and scale inhibitor used for industrial circulation cooling water | |
| CN103482775A (en) | Composite scale and corrosion inhibitor and preparation method thereof | |
| CN107381842A (en) | It is a kind of to copper and carbon steel effective non-phosphorus scale and corrosion inhibitor simultaneously | |
| CN105036363B (en) | A kind of composite corrosion inhibitor of suitable demineralized water and preparation method | |
| CN106277379A (en) | A kind of environment-friendly chitosan compound corrosion inhibiting and descaling agent and preparation method thereof | |
| CN105645610B (en) | A kind of recirculated water corrosion inhibiting and descaling agent and preparation method thereof | |
| CN102225809B (en) | Ascorbic acid phosphorus-free corrosion and scale inhibitor, and preparation method thereof | |
| CN103553219B (en) | Preparation method and application of corrosion and scale inhibitor for ethylene glycol sealed circulating water | |
| CN102295355B (en) | Identifiable environmentally-friendly scale and corrosion inhibitor | |
| CN102557277A (en) | Phosphorus-free composite water treatment agent and preparation method thereof | |
| CN102701471A (en) | High-harness water corrosion and scale inhibitor | |
| CN103539270B (en) | AA (Acrylic Acid)/BA (Butyl Acrylate)/AMPS (2-acrylamide-2-methylpro panesulfonic acid) ternary phosphate-free polymerized type corrosion and scale inhibitor and preparation method thereof | |
| CN101429662A (en) | Catbon steel composite inhibitor used for low-hardness low-alkalinity water system | |
| CN101618914A (en) | Application method of compound tungstate corrosion inhibitor of sea water | |
| CN102674565A (en) | Seawater corrosion inhibitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |
|
| WD01 | Invention patent application deemed withdrawn after publication |