CN102992498A - Low-phosphorous reverse osmosis composite scale inhibitor - Google Patents
Low-phosphorous reverse osmosis composite scale inhibitor Download PDFInfo
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- CN102992498A CN102992498A CN2012104877992A CN201210487799A CN102992498A CN 102992498 A CN102992498 A CN 102992498A CN 2012104877992 A CN2012104877992 A CN 2012104877992A CN 201210487799 A CN201210487799 A CN 201210487799A CN 102992498 A CN102992498 A CN 102992498A
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- reverse osmosis
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Abstract
The invention provides a low-phosphorous reverse osmosis composite scale inhibitor which comprises the following components: 20-40 parts of polyepoxysuccinic acid, 15-25 parts of polyaspartic acid, 4-12 parts of 2-acrylamide-2-methyl propanesulfonic acid, 3-8 parts of polyacrylic acid and 0.5-3 parts of amino trimethylene phosphonic acid, wherein the polyepoxysuccinic acid has the average molecular weight being 1000-3000 and the solid content being more than 40%; and the polyaspartic acid has the average molecular weight being 8000-10000. The low-phosphorous reverse osmosis composite scale inhibitor is low in phosphorus content, small in dosage and excellent in corrosion inhibition.
Description
Technical field
The present invention relates to a kind of reverse osmosis antisludging agent, relate in particular to a kind of low-phosphorus antiincrustation agent for reverse osmosis.
Background technology
The dense water electrode of reverse osmosis unit is vulnerable to sedimental pollution, as at settlings such as film Surface Creation CaCO3, Ca3 (PO4) 2, CaSO4, BaSO4, SrSO4, metal oxide, silicate compounds, affect the normal operation of reverse osmosis unit, cause scrapping of reverse osmosis membrane when serious.The most popular method that addresses this problem is to add Scale inhibitors in feed water by reverse osmosis, so the exploitation of reverse osmosis antisludging agent always is the focus that people competitively study.
The organic phosphate Scale inhibitors mainly carries out scale inhibition by slowing down crystal growth and these two kinds of effects of lattice distortion, exists in the time of this two kinds of effects, so that this class medicament also has threshold effect.This class Scale inhibitors phosphorus concentration with respect to poly-phosphate is low, and degree of hydrolysis is little.The investigator who but has points out, when containing iron or other suspended solidss in the water, the scale inhibition effect of this medicament is variation more or less just.This class medicament is to resistance CaCO
3The effect of dirt is fine, and its appearance is so that resistance CaCO
3The dirt technology has had breakthrough progress.In addition, phosphoric acid salt also has good restraining effect to the silicon dirt.But this class Scale inhibitors phosphorus concentration is high, and the calcium binding among the Yi Yushui produces Ca3 (PO4) 2 precipitations.Phosphorus is the nutrition source of microorganism on the other hand, can promote growing of bacterium algae, accelerates film and pollutes.Therefore simple Scale inhibitors is replaced by other Scale inhibitors just day by day, and present application seldom.
Summary of the invention
The object of the present invention is to provide a kind of low-phosphorous reverse osmosis compound scale inhibitor.Scale inhibitors provided by the invention not only has efficient scale inhibition and dispersion, and scale inhibition is active high, have good alkali-resistivity, and the scale-inhibiting properties in high calcium, high hardness water is excellent.
The present invention adopts following technical scheme:
A kind of low-phosphorous reverse osmosis compound scale inhibitor, composed of the following components by mass parts:
In the preferred scheme of the present invention, described poly-epoxy succinic acid is that molecular-weight average is 1000 ~ 3000, the poly-epoxy succinic acid of solid content＞40%.
In the preferred scheme of the present invention, described poly aspartic acid is that molecular-weight average is 8000 ~ 10000 poly aspartic acid.
Poly-epoxy succinic acid has without phosphorus, non-N structure to incrustation scale common in the reverse osmosis, all have good scale inhibition effect such as calcium carbonate, calcium sulfate, barium sulfate, Strontium Sulphate etc., but corrosion mitigating effect is not very good.Amino Trimethylene Phosphonic Acid is organic multicomponent phosphoric acid salt Scale inhibitors, has little, the effective characteristics of consumption, and thermostability and chemical stability are good simultaneously, and have preferably corrosion inhibition.
The present invention is composite by poly-epoxy succinic acid and other P containing sludge inhibitor are carried out, thereby remedies poly-epoxy succinic acid to the deficiency of calcium sulfate scale inhibition effect.Research finds to have synergistic effect between each component of combinational antisludging agent provided by the invention, makes Scale inhibitors provided by the invention also have good corrosion mitigating effect.
Than prior art, the present invention has following beneficial effect:
(1) Scale inhibitors phosphorus content provided by the invention is low;
(2) Scale inhibitors provided by the invention has good biodegradability;
(3) Scale inhibitors provided by the invention has excellent corrosion inhibition simultaneously;
(4) Scale inhibitors provided by the invention is applicable to high pH value condition.
Embodiment
The following examples can make the present invention of those of ordinary skill in the art's comprehend, but do not limit the present invention in any way.
Embodiment 1
A kind of low-phosphorous reverse osmosis compound scale inhibitor, composed of the following components by mass parts:
In the present embodiment:
The molecular-weight average of described poly-epoxy succinic acid is 1000, solid content＞40%;
Described poly aspartic acid is that molecular-weight average is 10000.
Embodiment 2
A kind of low-phosphorous reverse osmosis compound scale inhibitor, composed of the following components by mass parts:
In the present embodiment:
The molecular-weight average of described poly-epoxy succinic acid is 3000, solid content＞40%;
Described poly aspartic acid is that molecular-weight average is 8000.
Embodiment 3
A kind of environmental friendliness reverse osmosis compound scale inhibitor, composed of the following components by mass parts:
In the present embodiment:
The molecular-weight average of described poly-epoxy succinic acid is 2000, solid content＞40%;
Described poly aspartic acid is that molecular-weight average is 9000.
Embodiment 4
A kind of environmental friendliness reverse osmosis compound scale inhibitor, composed of the following components by mass parts:
In the present embodiment:
The molecular-weight average of described poly-epoxy succinic acid is 2500, solid content＞40%;
Described poly aspartic acid is that molecular-weight average is 88000.
Claims (3)
1. low-phosphorous reverse osmosis compound scale inhibitor, composed of the following components by mass parts:
2. described Scale inhibitors according to claim 1, it is characterized in that: described poly-epoxy succinic acid is that molecular-weight average is 1000 ~ 3000, the poly-epoxy succinic acid of solid content＞40%.
3. described Scale inhibitors according to claim 1, it is characterized in that: described poly aspartic acid is that molecular-weight average is 8000 ~ 10000 poly aspartic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104877992A CN102992498A (en) | 2012-11-26 | 2012-11-26 | Low-phosphorous reverse osmosis composite scale inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104877992A CN102992498A (en) | 2012-11-26 | 2012-11-26 | Low-phosphorous reverse osmosis composite scale inhibitor |
Publications (1)
| Publication Number | Publication Date |
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| CN102992498A true CN102992498A (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104877992A Pending CN102992498A (en) | 2012-11-26 | 2012-11-26 | Low-phosphorous reverse osmosis composite scale inhibitor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460472A (en) * | 1981-01-06 | 1984-07-17 | The B. F. Goodrich Company | Scale inhibitor for reverse osmosis water purification system |
| EP0120983A1 (en) * | 1983-03-31 | 1984-10-10 | The B.F. GOODRICH Company | Scale inhibitor for reverse osmosis water purification system |
| EP0516357A1 (en) * | 1991-05-31 | 1992-12-02 | Calgon Corporation | Anionic/cationic polymer mixture for scale inhibition |
| CN101138705A (en) * | 2007-06-18 | 2008-03-12 | 天津市东方水处理有限公司 | Antisludging agent for osmosis-reverse membrane and method of preparing the same |
| CN101412568A (en) * | 2008-10-31 | 2009-04-22 | 河北省电力研究院 | Scale inhibitor for circulating water |
| CN101973644A (en) * | 2010-10-29 | 2011-02-16 | 南京大学 | Reverse osmosis compound scale inhibitor |
| CN102616945A (en) * | 2012-04-06 | 2012-08-01 | 济南大学 | Preparation method for composite oilfield water scale inhibitor |
-
2012
- 2012-11-26 CN CN2012104877992A patent/CN102992498A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460472A (en) * | 1981-01-06 | 1984-07-17 | The B. F. Goodrich Company | Scale inhibitor for reverse osmosis water purification system |
| EP0120983A1 (en) * | 1983-03-31 | 1984-10-10 | The B.F. GOODRICH Company | Scale inhibitor for reverse osmosis water purification system |
| EP0516357A1 (en) * | 1991-05-31 | 1992-12-02 | Calgon Corporation | Anionic/cationic polymer mixture for scale inhibition |
| CN101138705A (en) * | 2007-06-18 | 2008-03-12 | 天津市东方水处理有限公司 | Antisludging agent for osmosis-reverse membrane and method of preparing the same |
| CN101412568A (en) * | 2008-10-31 | 2009-04-22 | 河北省电力研究院 | Scale inhibitor for circulating water |
| CN101973644A (en) * | 2010-10-29 | 2011-02-16 | 南京大学 | Reverse osmosis compound scale inhibitor |
| CN102616945A (en) * | 2012-04-06 | 2012-08-01 | 济南大学 | Preparation method for composite oilfield water scale inhibitor |
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Application publication date: 20130327 |