CN103482775A - Composite scale and corrosion inhibitor and preparation method thereof - Google Patents
Composite scale and corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN103482775A CN103482775A CN201310394548.4A CN201310394548A CN103482775A CN 103482775 A CN103482775 A CN 103482775A CN 201310394548 A CN201310394548 A CN 201310394548A CN 103482775 A CN103482775 A CN 103482775A
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Abstract
The invention provides a phosphate-free high-biodegradability scale and corrosion inhibitor applicable to water reclamation, which mainly comprises an agent A and an agent B, wherein the agent A is prepared from the following raw materials in parts by weight: 3-6 parts of polyepoxysuccinic acid, 1.3-4.5 parts of sodium molybdate, 20-35 parts of phosphate-free antiscale dispersant, 0.5-1.5 parts of benzotriazole and 52-75.2 parts of deionized water; and the agent B is prepared from the following raw materials in parts by weight: 5-12 parts of sodium gluconate, 15-30 parts of zinc sulfate, 0.5-3 parts of concentrated sulfuric acid and 55-80 parts of deionized water. The preparation method comprises the following steps: respectively preparing the agent A and agent B, and uniformly stirring to obtain the scale and corrosion inhibitor. The experiment indicates that the composite scale and corrosion inhibitor has favorable scale inhibition property and corrosion inhibition effect for reclaimed circulating cooling water.
Description
Technical field
The invention belongs to technical field of chemical products, be specifically related to a kind of composite scale-inhibiting corrosion inhibitor and preparation method thereof.
Background technology
Along with industrial, develop rapidly, industrialized level improves constantly, and industrial water consumption increases day by day, in developed country, industrial water consumption accounts for 1/2-3/4 of whole water withdrawals, and the industrial water consumption in China every year is about 1100 billion cubic meters, industrial circulating cooling water account for wherein more than 50%.Particularly in northern China, with water ration the power supply, the situation fixed electric with water be quite serious, the anxiety of water resources becomes the bottle diameter of electric power development gradually, how water saving, the utilization ratio that improves water is power plant's urgent problem.If the second water source using the middle water that obtains after sanitary sewage and Industrial Wastewater Treatment as industrial circulating cooling water is significant, it is the most important thing of saving town water.
China, in the begin one's study utilization of middle water of " six or five ", the enforcement period of the seventh five-year plan, takes on a certain scale at present, and in cities such as some ，Ru Beijing, city of severe water shortage, the north, Tianjin, middle water reuse project is quite general.The Water Quality Control Indexes of reuse water as cooling water stipulated in GB50335-2002 " reuse of wastewater engineering design standard ", second water source as industrial make up water, middle water is compared with the first water source (common surface water), lack relative stability, due to the sewage source complexity before processing, cause main fouling tendency factor (hardness, basicity) and main Among Corrosive Factors (chlorion, sulfate ion) change greatly, the higher corrosion and scaling problem that makes microbial reproduction and produce of COD is also even more serious, and middle water contains phosphorus, this just requires in employing water relevant circulating water treatment technology during water as a supplement, as neutralization technology, mitigation and antiscaling technology, sterilization algae removal technology and relevant monitoring technique need reach a higher level.
Due to the water for recirculated cooling water, some comes from city domestic sewage, make itself probably just be with some phosphorus, and phosphorus is to cause body eutrophication may cause the basic factor of " red tide ", if be material so also contain phosphorus in water conditioner used, will certainly aggravate so the deterioration degree of environment.In " a kind of anti-incrustation corrosion inhibitor that is applicable to middle water reuse " (China Patent Publication No. CN101423300), a kind of anti-incrustation corrosion inhibitor is disclosed, although its scale inhibitor is effective, also in the suitable water body severe at condition of water quality such as contaminated water source and municipal middle waters, apply, but the 2-phosphoric acid butane 1,2 in material used, 4-tricarboxylic acid (PBTC), adopt occluded corrosion cell, the content that utilizes 721 spectrophotometers to record total phosphate is 17% left and right; In " middle water reuse anti-incrustation corrosion inhibitor and preparation method thereof " (China Patent No. is CN102730846A), dispersion agent used also contains phosphino-, if reappraise its performance with new water conditioner concept, it will be subject to certain restrictions aspect middle water reuse.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of middle water reuse, the anti-incrustation corrosion inhibitor that without phosphorus, biodegradability is good of can be used for.
Composite scale-inhibiting corrosion inhibitor of the present invention mainly comprises two doses, and wherein A agent and B agent are prepared from by the raw material of following parts by weight respectively:
A agent: poly-epoxy succinic acid 3-6 weight part, Sodium orthomolybdate 1.3-4.5 weight part, non-phosphorus scale dispersion agent 20-35 weight part, benzotriazole 0.5-1.5 weight part, deionized water 52-75.2 weight part;
B agent: Sunmorl N 60S 5-12 weight part, zinc sulfate 15-30 weight part, vitriol oil 0.5-3 weight part, deionized water 55-80 weight part.
Described non-phosphorus scale dispersion agent is selected from two or three in vinylformic acid-acrylate-sulfonate terpolymer (AA-AMPS), vinylformic acid-Propylene glycol monoacrylate multipolymer (AA-HPA), vinylformic acid-sulfonic acid copolymer (AA-SA).
The preparation method of composite scale-inhibiting corrosion inhibitor of the present invention is:
Described A agent and B agent are prepared respectively, then mix, after stirring and get final product.
(1) poly-epoxy succinic acid, the Sunmorl N 60S biological degradability is high, utilize the test of shaking table method, after 28 days, degradation rate can reach more than 85%, belong to environmentally friendly anti-incrustation corrosion inhibitor, and Sodium orthomolybdate combines to use and given full play to the synergy between them, eliminated deficiency separately, strengthen the ability of removing ammonia nitrogen, organism, mn ion, stink and colourity in water, greatly improved the water treatment effect.
(2) vinylformic acid-acrylate-sulfonate terpolymer (AA-AMPS), vinylformic acid-Propylene glycol monoacrylate multipolymer (AA-HPA), vinylformic acid-sulfonic acid copolymer (AA-SA) belong to non-phosphorus scale dispersion agent class; contain the carboxylic acid group of strong scale inhibition and dispersion performance and the sulfonic group of strong polarity in molecular structure, its effect is exactly stop the generation of incrustation scale in industrial circulating water system and equipment is carried out to inhibition protection.The polymeric scale inhibitor dispersion agent, as the important component part in water treatment agent, can pass through chelating, solubilising, the effect such as lattice distortion or dispersion and reach the purpose that scale inhibition disperses.
(3) zinc sulfate is the cathode type inhibiter, and what work is zine ion, and it can form hydroxide deposits on cathode surface rapidly in water, plays protective membrane, and film forming is rapid but the time is of short duration, so should not use separately.It and Sodium orthomolybdate compound use not only can accelerate the film forming speed of inhibiter, play inhibition synergy and prevent the effect of pitting, can keep again the weather resistance of formed film.
Embodiment
embodiment mono-
A agent: poly-epoxy succinic acid 30g, Sodium orthomolybdate 40g, vinylformic acid-acrylate-sulfonate terpolymer (AA-AMPS) 170g, vinylformic acid-sulfonic acid copolymer (AA-SA) 80g, benzotriazole 10g, deionized water 670g;
B agent: Sunmorl N 60S 120g, zinc sulfate 280g, vitriol oil 30g, deionized water 570g.
Preparation method: get respectively two 250ml beakers, after beaker is rinsed well, by above proportioning, material is joined respectively in beaker to preparation A agent and B agent, then mix, after stirring and get final product, pour in the storage sample bottle, deposit in the shady and cool ventilation place.
embodiment bis-
A agent: poly-epoxy succinic acid 40g, Sodium orthomolybdate 32g, vinylformic acid-acrylate-sulfonate terpolymer (AA-AMPS) 150g, vinylformic acid-Propylene glycol monoacrylate multipolymer (AA-HPA) 150g, benzotriazole 7g, deionized water 230.5g;
B agent: Sunmorl N 60S 80g, zinc sulfate 200g, vitriol oil 10g, deionized water 710g.
Concrete medicament preparation method is with embodiment mono-.
embodiment tri-
A agent: poly-epoxy succinic acid 45g, Sodium orthomolybdate 20g, vinylformic acid-Propylene glycol monoacrylate multipolymer (AA-HPA) 140g, vinylformic acid-sulfonic acid copolymer (AA-SA) 100g, benzotriazole 13g, deionized water 682g;
B agent: Sunmorl N 60S 100g, zinc sulfate 250g, vitriol oil 20g, deionized water 630g.
Concrete medicament preparation method is with embodiment mono-.
embodiment tetra-
A agent: poly-epoxy succinic acid 60g, Sodium orthomolybdate 18g, vinylformic acid-acrylate-sulfonate terpolymer (AA-AMPS) 120g, vinylformic acid-Propylene glycol monoacrylate multipolymer (AA-HPA) 135g, vinylformic acid-sulfonic acid copolymer (AA-SA) 90g, benzotriazole 15g, residue deionized water 562g;
B agent: Sunmorl N 60S 60g, zinc sulfate 170g, vitriol oil 8g, residue deionized water 762g.
Concrete medicament preparation method is with embodiment mono-.
embodiment five composite scale-inhibiting corrosion inhibitor quality evalutions
By following test, composite scale-inhibiting corrosion inhibitor of the present invention is estimated:
make up water water quality used adopts the middle water water quality of certain power plant:
(annotate: Ca
2+, total hardness, total alkalinity is all with CaCO
3meter)
The experience index of stability (R.S.I.) proposed by nineteen forty-six Lei Zina (Ryznar) carries out the judgement that calcium carbonate scale is separated out
R.S.I.=2pHs-pH<6 foulings
R.S.I.=2pHs-pH=6 both non-scaling does not corrode yet
R.S.I.=2pHs-pH > 6 corrosion
By calculating pHs=(9.7+A+B)-(C+D)
A in formula---total dissolved solidss coefficient
B---temperature factor
C---calcium hardness coefficient
D---total alkalinity coefficient
(annotate: A, B, C, D all can be checked in by A, B, C, D coefficient conversion table)
R.S.I.=7.38 6 known in this water make up water belong to Corrosive water quality.
It is standard that GB/T16632-2008 " mensuration-precipitation of calcium carbonate of water conditioner scale-inhibiting properties amass method " is all take in the test of following scale-inhibiting properties, is hindered the calcium carbonate scale benchmark test, and 80 ℃ of temperature, concentrate 1.5 times, and 10 hours, scale inhibition performance was calculated as follows:
The corrosion inhibition test, all with GB/T18175-2000 " mensuration of water conditioner corrosion inhibition-rotary hanging plate method ", utilizes the rotary hanging plate instrument to carry out the corrosive nature test, temperature 50 C, and rotating speed 85r/min, not pre-film lacing film, the time is 72 hours, carbon steel test piece 28 ㎝
2, corrosion rate is calculated as follows:
In formula: W---test piece mass loss, g;
W
0---the mass loss mean value of test piece pickling blank test, g;
The surface-area of A---test piece, cm
3;
The density of D---test piece, g/cm
3;
The test period of T---test piece, h;
8760---with 1 year suitable hours, h/a;
10---the millimeter suitable with 1cm, mm/cm.
through experimental study, reach a conclusion as follows:(dosage of medicament A, B can be regulated voluntarily according to the water quality situation of circulation make up water)
The scale-inhibiting properties of medicament:
The corrosive nature of medicament:
Annotate: corrosion test test piece used is high-quality low-carbon (LC) carbon steel (No. 20 steel) for experiment test piece, corrosion of carbon steel speed<0.075mm/.
Can learn by experiment, scale-inhibiting properties and the corrosion mitigating effect of composite scale-inhibiting corrosion inhibitor centering water cycle water coolant of the present invention are all good.
Claims (3)
1. a composite scale-inhibiting corrosion inhibitor, mainly comprise two doses, it is characterized in that, A agent and B agent are prepared from by the raw material of following parts by weight respectively:
A agent: poly-epoxy succinic acid 3-6 weight part, Sodium orthomolybdate 1.3-4.5 weight part, non-phosphorus scale dispersion agent 20-35 weight part, benzotriazole 0.5-1.5 weight part, deionized water 52-75.2 weight part;
B agent: Sunmorl N 60S 5-12 weight part, zinc sulfate 15-30 weight part, vitriol oil 0.5-3 weight part, deionized water 55-80 weight part.
2. composite scale-inhibiting corrosion inhibitor as claimed in claim 1, it is characterized in that, described non-phosphorus scale dispersion agent is selected from two or three in vinylformic acid-acrylate-sulfonate terpolymer, vinylformic acid-Propylene glycol monoacrylate multipolymer, vinylformic acid-sulfonic acid copolymer.
3. the preparation method of composite scale-inhibiting corrosion inhibitor as claimed in claim 1 or 2, is characterized in that, described A agent and B agent are prepared respectively, then mixes, after stirring and get final product.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140162A (en) * | 2014-08-26 | 2014-11-12 | 山东瑞爱特环保科技有限公司 | Non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water, and preparation method thereof |
| CN105540878A (en) * | 2016-02-04 | 2016-05-04 | 江苏盛世水业有限公司 | Special scale and corrosion inhibitor for low-temperature water system |
| CN106242085A (en) * | 2016-08-25 | 2016-12-21 | 山东天庆科技发展有限公司 | A kind of circularly-cooling sea water non-phosphorus scale and corrosion inhibitor and preparation method thereof |
| CN106517611A (en) * | 2016-12-30 | 2017-03-22 | 薛方勤 | Reclaimed water reutilization method for circulating water system |
| CN108996714A (en) * | 2018-08-24 | 2018-12-14 | 广州科宝水处理科技有限公司 | A kind of recirculated cooling water phosphate-free corrosion inhibition antisludging agent |
| CN109402638A (en) * | 2018-11-14 | 2019-03-01 | 山东泰和水处理科技股份有限公司 | A kind of corrosion inhibiter for engine coolant |
| CN110627230A (en) * | 2019-10-09 | 2019-12-31 | 天津正达科技有限责任公司 | Coal gasification high-hardness high-alkalinity slag water phosphorus-free scale inhibition and dispersion agent |
| CN111439852A (en) * | 2020-05-22 | 2020-07-24 | 德蓝水技术股份有限公司 | Zinc salt corrosion inhibitor and preparation method thereof |
| CN112125355A (en) * | 2020-08-26 | 2020-12-25 | 华能国际电力股份有限公司上安电厂 | Power plant water resource utilization method based on water quality classification and cascade utilization |
| CN112872003A (en) * | 2021-04-15 | 2021-06-01 | 四川农业大学 | Method for leaching and repairing copper in mine polluted soil |
| CN114908343A (en) * | 2022-06-02 | 2022-08-16 | 山东天庆科技发展有限公司 | Phosphorus-free prefilming agent for circulating cooling water and preparation method thereof |
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| CN101066811A (en) * | 2007-06-15 | 2007-11-07 | 武汉金坡化工科技有限公司 | No-phosphate corrosion and scale inhibitor and its application |
| CN101117256A (en) * | 2007-07-20 | 2008-02-06 | 南京市第一精细化工公司精细化工厂 | Fully-organic inhibition dirty-proof industrial water conditioning agent and method for making same |
| WO2013085374A1 (en) * | 2011-12-06 | 2013-06-13 | Universite Ibn Tofail | Process for treating a makeup water of cooling circuits against the corrosion and the biological fouling of a carbon steel |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066811A (en) * | 2007-06-15 | 2007-11-07 | 武汉金坡化工科技有限公司 | No-phosphate corrosion and scale inhibitor and its application |
| CN101117256A (en) * | 2007-07-20 | 2008-02-06 | 南京市第一精细化工公司精细化工厂 | Fully-organic inhibition dirty-proof industrial water conditioning agent and method for making same |
| WO2013085374A1 (en) * | 2011-12-06 | 2013-06-13 | Universite Ibn Tofail | Process for treating a makeup water of cooling circuits against the corrosion and the biological fouling of a carbon steel |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140162A (en) * | 2014-08-26 | 2014-11-12 | 山东瑞爱特环保科技有限公司 | Non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water, and preparation method thereof |
| CN105540878A (en) * | 2016-02-04 | 2016-05-04 | 江苏盛世水业有限公司 | Special scale and corrosion inhibitor for low-temperature water system |
| CN106242085A (en) * | 2016-08-25 | 2016-12-21 | 山东天庆科技发展有限公司 | A kind of circularly-cooling sea water non-phosphorus scale and corrosion inhibitor and preparation method thereof |
| CN106517611A (en) * | 2016-12-30 | 2017-03-22 | 薛方勤 | Reclaimed water reutilization method for circulating water system |
| CN108996714A (en) * | 2018-08-24 | 2018-12-14 | 广州科宝水处理科技有限公司 | A kind of recirculated cooling water phosphate-free corrosion inhibition antisludging agent |
| CN109402638A (en) * | 2018-11-14 | 2019-03-01 | 山东泰和水处理科技股份有限公司 | A kind of corrosion inhibiter for engine coolant |
| CN110627230A (en) * | 2019-10-09 | 2019-12-31 | 天津正达科技有限责任公司 | Coal gasification high-hardness high-alkalinity slag water phosphorus-free scale inhibition and dispersion agent |
| CN110627230B (en) * | 2019-10-09 | 2021-11-19 | 天津正达科技有限责任公司 | Coal gasification high-hardness high-alkalinity slag water phosphorus-free scale inhibition and dispersion agent |
| CN111439852A (en) * | 2020-05-22 | 2020-07-24 | 德蓝水技术股份有限公司 | Zinc salt corrosion inhibitor and preparation method thereof |
| CN112125355A (en) * | 2020-08-26 | 2020-12-25 | 华能国际电力股份有限公司上安电厂 | Power plant water resource utilization method based on water quality classification and cascade utilization |
| CN112872003A (en) * | 2021-04-15 | 2021-06-01 | 四川农业大学 | Method for leaching and repairing copper in mine polluted soil |
| CN114908343A (en) * | 2022-06-02 | 2022-08-16 | 山东天庆科技发展有限公司 | Phosphorus-free prefilming agent for circulating cooling water and preparation method thereof |
| CN114908343B (en) * | 2022-06-02 | 2023-10-03 | 山东天庆科技发展有限公司 | Phosphorus-free prefilming agent for circulating cooling water and preparation method thereof |
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