CN101941764A - Circulating cooling water scale inhibition corrosion inhibitor and preparation method thereof - Google Patents
Circulating cooling water scale inhibition corrosion inhibitor and preparation method thereof Download PDFInfo
- Publication number
- CN101941764A CN101941764A CN2010102759460A CN201010275946A CN101941764A CN 101941764 A CN101941764 A CN 101941764A CN 2010102759460 A CN2010102759460 A CN 2010102759460A CN 201010275946 A CN201010275946 A CN 201010275946A CN 101941764 A CN101941764 A CN 101941764A
- Authority
- CN
- China
- Prior art keywords
- cooling water
- parts
- stirred
- corrosion inhibitor
- circulating cooling
- 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.)
- Granted
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a circulating cooling water scale inhibition corrosion inhibitor which is prepared from the following components in parts by weight: 15-26 parts of N-acyl ED3A, 35-47 parts of crylic acid-acrylate multivariant copolymer, 16-25 parts of sodium gluconate and 8-16 parts of deionized water. The invention has the characteristics of small dosage, good water purification effect, environment protection, wide using range and the like. The invention can be widely applied, can solve the scaling and corrosion problems of a industrial circulating cooling water system, does not produce secondary pollution to environment and does not breed bacteria algae due to eutrophication in the circulating cooling water system.
Description
Technical field
The present invention relates to a kind of flocculation agent, especially relate to a kind of recirculated cooling water anti-incrustation corrosion inhibitor and preparation method thereof.
Background technology
Adopt the enterprise of open-type cooling water, generally directly be discharged into the Jiang Hai lake, thereby water loss is big, and environment is produced pollution being used for cooled water.For water saving, the protection environment, a lot of companies are converted to the closed cycle cooling water system with industrial water coolant by open-type cooling water system.Adopt recirculated cooling water, its cooled water is reused after lowering the temperature by cooling tower again.After the cooling water circulation use, saved water consumption greatly, saved ample resources, but water coolant is reused constantly evaporation, therefore salt density increases gradually in the water, add that water coolant fully contacts with atmosphere, dissolved oxygen and bacteria content increase greatly, cause recirculating cooling water system serious fouling, corrosion and bacterium algae to occur easily and grow three big disadvantages, and the heat exchange efficiency of equipment greatly reduces, maintenance is frequent, threatens the ordinary production of enterprise.Therefore, must in recirculated cooling water, add chemical agents such as Scale inhibitors, inhibiter, to guarantee the normal operation of system.
Be extensive use of water treatment agent in China's recirculating cooling water system and start from the seventies in 20th century, what begin to adopt is single phosphorus line formulation, and requirement and continuous research and development according to the scene have progressively formed: phosphorus+zinc series; Poly-phosphorus+phosphonate+poly carboxylic acid; Poly-phosphate+molybdate; Water glass+phosphonate; The water treatment agent of formula systems such as sodium wolframate+phosphonate, though above water treatment agent has solved the fouling and the etching problem of recirculating cooling water system, if pharmaceutical quantities control is bad, " phosphorus, phosphine " produces eutrophication to system easily, grow the bacterium algae, can exert an influence equally environment.
Summary of the invention
The invention provides a kind of recirculated cooling water anti-incrustation corrosion inhibitor and preparation method thereof, poor to solve existing anti-incrustation corrosion inhibitor purifying water effect, not environmental protection has technical problems such as certain limitation in the use.
The present invention is mainly solved the problems of the technologies described above by following technical proposals: this inhibiter is mainly made by described weight ratio by following component:
N-acyl group ED3A 15-26 part, vinylformic acid-CALCIUM ACRYLATE multiple copolymer 35-47 part, Sunmorl N 60S 16-25 part, deionized water 8-16 part.
As preferably, the molecular weight of described vinylformic acid-CALCIUM ACRYLATE multiple copolymer is 8,000,000-1,000 ten thousand.
The method for preparing above-mentioned recirculated cooling water anti-incrustation corrosion inhibitor is: at first deionized water is poured in the reactor of vacuum dispersion machine by described weight ratio; drop into vinylformic acid-CALCIUM ACRYLATE multiple copolymer; stirred 15-45 minute; add Sunmorl N 60S again; being warming up to 40～45 ℃ of constant temperature stirred 30-80 minute; add N-acyl group ED3A at last, stir 15-20 minute promptly with the rotating speed of 500-600rpm.
In order further to improve effect of the present invention, described recirculated cooling water anti-incrustation corrosion inhibitor also comprises sodium wolframate 1.5-5 part.The method for preparing this recirculated cooling water anti-incrustation corrosion inhibitor is: at first deionized water is poured in the reactor of vacuum dispersion machine by described weight ratio; dropping into sodium wolframate stirred 30-80 minute; drop into vinylformic acid-CALCIUM ACRYLATE multiple copolymer; stirred 15-45 minute; add Sunmorl N 60S again; be warming up to 40～45 ℃ of constant temperature and stirred 30-80 minute, add N-acyl group ED3A at last, stir 15-20 minute promptly with the rotating speed of 500-600rpm.
Scale inhibitor mechanism of the present invention:
1. N-acyl group ED3A can the many polyvalent metal ions of chelating, and form complex compound with it, thereby stop calcium magnesium plasma to form fouling at the pipe-line equipment of circulating cooling system.
2. because N-acyl group ED3A possesses very strong surfactivity, so it can be adsorbed on the metallic surface, forms to stick very strong hydrophobic membrane, prevents metal equipment corrosion effectively.
3. vinylformic acid-CALCIUM ACRYLATE multiple copolymer has very strong dispersiveness to the scale forming matter in the recirculated cooling water, dirt etc., thus the crystallization that stops scale forming matter with adhere to.
Characteristics such as the present invention has that consumption is few, purifying water effect good, environmental protection, use range are wide.Its widespread use both can solve the fouling of industrial circulating cooling water system and corrode a difficult problem, again to the environment non-secondary pollution, but also can not produce eutrophication and grow the bacterium algae circulating water system.
Embodiment
Embodiment 1: at first by described weight ratio 11 parts of deionized waters are poured in the reactor of vacuum dispersion machine; drop into 43 parts of vinylformic acid-CALCIUM ACRYLATE multiple copolymers (molecular weight of copolymer 8,000,000-1,000 ten thousand); stirred 30 minutes; add 22 parts of Sunmorl N 60Ss again; being warming up to 40～45 ℃ of constant temperature stirred 80 minutes; add 21 parts of N-acyl group ED3A at last, stir with the rotating speed of 500-600rpm and promptly got the present invention in 15 minutes.
Embodiment 2: at first by described weight ratio 8 parts of deionized waters are poured in the reactor of vacuum dispersion machine; drop into 35 parts of vinylformic acid-CALCIUM ACRYLATE multiple copolymers; stirred 45 minutes; add 25 parts of Sunmorl N 60Ss again; being warming up to 45 ℃ of constant temperature stirred 30 minutes; add 26 parts of N-acyl group ED3A at last, stir with the rotating speed of 500-600rpm and promptly got the present invention in 20 minutes.
Embodiment 3: at first by described weight ratio 16 parts of deionized waters are poured in the reactor of vacuum dispersion machine; drop into 47 parts of vinylformic acid-CALCIUM ACRYLATE multiple copolymers; stirred 15 minutes; add 19 parts of Sunmorl N 60Ss again; being warming up to 42 ℃ of constant temperature stirred 50 minutes; add 15 parts of N-acyl group ED3A at last, stir with the rotating speed of 500-600rpm and promptly got the present invention in 18 minutes.
Embodiment 4: at first by described weight ratio 11 parts of deionized waters are poured in the reactor of vacuum dispersion machine; dropping into 3 parts of sodium wolframates stirred 30 minutes; drop into 43 parts of vinylformic acid-CALCIUM ACRYLATE multiple copolymer (molecular weight of copolymer 8,000,000-1,000 ten thousand) then; stirred 30 minutes; add 22 parts of Sunmorl N 60Ss again; be warming up to 40～45 ℃ of constant temperature and stirred 80 minutes, add 21 parts of N-acyl group ED3A at last, stir with the rotating speed of 500-600rpm and promptly got the present invention in 15 minutes.
Embodiment 5: at first by described weight ratio 8 parts of deionized waters are poured in the reactor of vacuum dispersion machine; dropping into 4 parts of sodium wolframates stirred 80 minutes; drop into 35 parts of vinylformic acid-CALCIUM ACRYLATE multiple copolymer then; stirred 45 minutes; add 25 parts of Sunmorl N 60Ss again; be warming up to 45 ℃ of constant temperature and stirred 30 minutes, add 26 parts of N-acyl group ED3A at last, stir with the rotating speed of 500-600rpm and promptly got the present invention in 20 minutes.
Embodiment 6: at first by described weight ratio 16 parts of deionized waters are poured in the reactor of vacuum dispersion machine; dropping into 1.5 parts of sodium wolframates stirred 50 minutes; drop into 47 parts of vinylformic acid-CALCIUM ACRYLATE multiple copolymer then; stirred 15 minutes; add 19 parts of Sunmorl N 60Ss again; be warming up to 42 ℃ of constant temperature and stirred 50 minutes, add 15 parts of N-acyl group ED3A at last, stir with the rotating speed of 500-600rpm and promptly got the present invention in 18 minutes.
Embodiment 7: at first by described weight ratio 14 parts of deionized waters are poured in the reactor of vacuum dispersion machine; dropping into 5 parts of sodium wolframates stirred 60 minutes; drop into 40 parts of vinylformic acid-CALCIUM ACRYLATE multiple copolymer (molecular weight of copolymer 8,000,000-1,000 ten thousand) then; stirred 20 minutes; add 16 parts of Sunmorl N 60Ss again; be warming up to 40～45 ℃ of constant temperature and stirred 65 minutes, add 18 parts of N-acyl group ED3A at last, stir with the rotating speed of 500-600rpm and promptly got the present invention in 15 minutes.
More than among each embodiment, N-acyl group ED3A, Sunmorl N 60S, sodium wolframate generally adopt the commercially available prod; Olefin(e) acid-CALCIUM ACRYLATE multiple copolymer can adopt the commercially available prod, also can produce voluntarily, and production method is voluntarily: vinylformic acid and Propylene glycol monoacrylate are entered radical polymerization under standard conditions.Use the initiator initiated polymerization at 70～80 ℃,, neutralize with diluted sodium hydroxide solution then from link transfer agent (Virahol) control molecular weight of copolymer 8,000,000-1,000 ten thousand.
Get embodiment 1-7 and carry out scale inhibition and corrosion inhibition test respectively.Test raw water quality pH8.1, turbidity is 26.8mg/L, and basicity is 486.4mg/L, and calcium ion is 920.5mg/L, and chlorion is 628.3mg/L.
In antisludging test, the added amount of chemical of embodiment 1-7 is 30mg/L, and test temperature is 80 ℃, concentrates 3.0 times.In inhibition (rotary hanging plate) test, the added amount of chemical of embodiment 1-7 is 30mg/L, and test temperature is 50 ℃, and the lacing film speed of rotation is 90 rev/mins, and test period is 216 hours.Test-results is as shown in table 1:
Table 1: scale inhibition and corrosion inhibition test data
| Sample | Scale inhibition performance % (CaCO 3) | Corrosion rate % (carbon steel) | Corrosion rate % (brass) | Corrosion rate % (stainless steel) |
| Embodiment 1 | 97.6 | 0.035 | 0.0019 | 0.0026 |
| Embodiment 2 | 96.8 | 0.057 | 0.0028 | 0.0041 |
| Embodiment 3 | 96.2 | 0.064 | 0.0043 | 0.0045 |
| Embodiment 4 | 99.8 | 0.034 | 0.0019 | 0.0030 |
| Embodiment 5 | 97.3 | 0.055 | 0.0036 | 0.0040 |
| Embodiment 6 | 98.3 | 0.051 | 0.0035 | 0.0042 |
| Embodiment 7 | 99.6 | 0.033 | 0.0018 | 0.0027 |
By above-mentioned data as can be seen: though anti-incrustation corrosion inhibitor of the present invention in the relatively poor relatively water quality of condition, when dosage was 30mg/L, its scale inhibition performance can be up to 99.8%.And to the corrosion of Carbon Steel rate up to 0.033, the corrosion rate of brass is up to 0.0018, the Corrosion of Stainless Steel rate is up to 0.0027, These parameters is far superior to national standard.
Claims (4)
1. recirculated cooling water anti-incrustation corrosion inhibitor is characterized in that this inhibiter mainly made by described weight ratio by following component:
N-acyl group ED3A 15-26 part, vinylformic acid-CALCIUM ACRYLATE multiple copolymer 35-47 part, Sunmorl N 60S 16-25 part, deionized water 8-16 part.
2. according to right 1 described recirculated cooling water anti-incrustation corrosion inhibitor, the molecular weight that it is characterized in that described vinylformic acid-CALCIUM ACRYLATE multiple copolymer is 8,000,000-1,000 ten thousand.
3. according to right 1 or 2 described recirculated cooling water anti-incrustation corrosion inhibitors, it is characterized in that also comprising sodium wolframate 1.5-5 part.
4. method for preparing according to right 1 or 2 described recirculated cooling water anti-incrustation corrosion inhibitors; it is characterized in that this method is: at first deionized water is poured in the reactor of vacuum dispersion machine by described weight ratio; drop into vinylformic acid-CALCIUM ACRYLATE multiple copolymer; stirred 15-45 minute; add Sunmorl N 60S again; be warming up to 40～45 ℃ of constant temperature and stirred 30-80 minute, add N-acyl group ED3A at last, stir 15-20 minute promptly with the rotating speed of 500-600rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010275946.0A CN101941764B (en) | 2010-08-31 | 2010-08-31 | Circulating cooling water scale inhibition corrosion inhibitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010275946.0A CN101941764B (en) | 2010-08-31 | 2010-08-31 | Circulating cooling water scale inhibition corrosion inhibitor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101941764A true CN101941764A (en) | 2011-01-12 |
| CN101941764B CN101941764B (en) | 2014-01-15 |
Family
ID=43434006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010275946.0A Active CN101941764B (en) | 2010-08-31 | 2010-08-31 | Circulating cooling water scale inhibition corrosion inhibitor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101941764B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396144A (en) * | 2016-08-10 | 2017-02-15 | 仙桃市中楚化工有限责任公司 | A water stabilizing agent for middle- and low-pressure steam boilers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919752A (en) * | 2006-09-11 | 2007-02-28 | 北京瀚博英电力科技有限公司 | Environment-friendly type composite corrosion and scale inhibitor |
| CN101700935A (en) * | 2009-11-09 | 2010-05-05 | 中国海洋石油总公司 | Phosphorus-free corrosion-inhibition antiscalant used for industrial circulation cooling water |
-
2010
- 2010-08-31 CN CN201010275946.0A patent/CN101941764B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919752A (en) * | 2006-09-11 | 2007-02-28 | 北京瀚博英电力科技有限公司 | Environment-friendly type composite corrosion and scale inhibitor |
| CN101700935A (en) * | 2009-11-09 | 2010-05-05 | 中国海洋石油总公司 | Phosphorus-free corrosion-inhibition antiscalant used for industrial circulation cooling water |
Non-Patent Citations (4)
| Title |
|---|
| 《日用化学工业》 20080229 牛金平等 螯合性表面活性剂的制备工艺与应用性能(Ⅳ)--N-酰基ED3A的应用 第58-61页 1-4 第38卷, 第1期 * |
| 牛金平等: "螯合性表面活性剂的制备工艺与应用性能(Ⅳ)——N-酰基ED3A的应用", 《日用化学工业》, vol. 38, no. 1, 29 February 2008 (2008-02-29), pages 58 - 61 * |
| 王新刚等: "丙烯酸/丙烯酸羟丙酯共聚物阻垢剂的合成及性能研究", 《陕西科技大学学报》, vol. 22, no. 2, 30 April 2004 (2004-04-30), pages 19 - 23 * |
| 王香爱: "我国阻垢剂的研究进展", 《应用化工》, vol. 38, no. 1, 31 January 2009 (2009-01-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396144A (en) * | 2016-08-10 | 2017-02-15 | 仙桃市中楚化工有限责任公司 | A water stabilizing agent for middle- and low-pressure steam boilers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101941764B (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107362691B (en) | Green phosphorus-free scale inhibitor for reverse osmosis membrane for seawater desalination and preparation method thereof | |
| CN102351328B (en) | Green total organic carbon steel scale and corrosion inhibitor for circulating cooling water system | |
| CN103739093B (en) | For the Ternary polymerization type corrosion inhibiting and descaling agent and preparation method thereof of central air-conditioning recirculated cooling water | |
| CN103482775B (en) | Composite scale and corrosion inhibitor and preparation method thereof | |
| CN101967024B (en) | Phosphorus-free corrosion and scale inhibitor | |
| CN101746903B (en) | Phosphorus-free composite water treatment agent | |
| CN101700935A (en) | Phosphorus-free corrosion-inhibition antiscalant used for industrial circulation cooling water | |
| WO2015101124A1 (en) | Phosphorous-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning, and method of preparing said inhibitor | |
| CN105036367A (en) | Phosphorus-free corrosion and scale inhibitor with sterilizing effect and preparation method and application thereof | |
| CN109293015B (en) | Industrial circulating water treatment agent | |
| CN103420497A (en) | Non-phosphorous corrosion and scale inhibitor containing lignosulfonate and application thereof | |
| CN109354219B (en) | Non-phosphorus scale inhibitor suitable for saline-alkali water reverse osmosis system | |
| CN106242085A (en) | A kind of circularly-cooling sea water non-phosphorus scale and corrosion inhibitor and preparation method thereof | |
| CN104310600A (en) | Environment-friendly composite water treatment agent and application thereof | |
| CN103058399A (en) | Efficient alkyl ether carboxylate type dirt dispersion agent and application thereof | |
| CN102464410B (en) | Novel environmentally-friendly corrosion/scale inhibitor | |
| CN107512784A (en) | A kind of corrosion inhibiting and descaling agent for organic alcohols refrigerating system and preparation method thereof | |
| CN1438185A (en) | Green scale and corrosion inhibitor | |
| CN110937700B (en) | Corrosion and scale inhibitor for circulating cooling water system and preparation method thereof | |
| CN101941764B (en) | Circulating cooling water scale inhibition corrosion inhibitor and preparation method thereof | |
| CN104140162A (en) | Non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water, and preparation method thereof | |
| CN104803494A (en) | Corrosion and scale inhibitor for recirculated cooling water | |
| CN106145393A (en) | A kind of preparation method of novel iron-resistant contamination type film scale inhibitor special | |
| CN102936061A (en) | Scale and corrosion inhibitor | |
| CN104478104A (en) | Phosphorus-free solid scale inhibitor and using method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |