CN101967024A - Phosphorus-free corrosion and scale inhibitor - Google Patents
Phosphorus-free corrosion and scale inhibitor Download PDFInfo
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- CN101967024A CN101967024A CN 201010201297 CN201010201297A CN101967024A CN 101967024 A CN101967024 A CN 101967024A CN 201010201297 CN201010201297 CN 201010201297 CN 201010201297 A CN201010201297 A CN 201010201297A CN 101967024 A CN101967024 A CN 101967024A
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Abstract
The invention discloses a phosphorus-free corrosion and scale inhibitor. The phosphorus-free corrosion inhibitor comprises the following four components in percentage by weight: 30 to 70 percent of natural product extractive, 20 to 60 percent of sodium polyacrylate, 2 to 15 percent of zinc sulfate and 1 to 5 percent benzotriazole; and the natural product extractive comprises the following three components in percentage by weight: 30 to 60 percent of lignosulfonate, 30 to 60 percent of sodium humate and 2 to 15 percent of tannin. The phosphorus-free corrosion and scale inhibitor does not have phosphorus and nitrogen, has simple test items in the using process, can realize zero emission operation, has good corrosion and scale inhibition effect in a circulating cooling water system, and is the environmental-friendly corrosion and scale inhibitor.
Description
Technical field
The present invention relates to a kind of industrial circulating cooling water processing technology field, refer in particular to a kind of composite environment-friendly type phosphate-free corrosion inhibition antisludging agent.
Background technology
In recent years, organophosphorus acids corrosion inhibiting and descaling agent application development is very rapid, and domestic recirculated cooling water is handled corrosion inhibiting and descaling agent commonly used poly-phosphate, phosphoric acid ester, organic phosphoric acid and polymer class etc.Wherein, organophosphorus acids medicament is with its inhibition efficiently and scale inhibition dual-use function and be widely used, and such water treatment agent has stable chemical performance, ability comparatively high temps and pH value, characteristics such as tangible molten limit effect and synergistic effect are arranged.But phosphorus is the nutrition source of bacterium and algae, contains the eutrophication that Phosphorus Scale inhibitors easily causes the environment waters, promotes the growth of bacterium algae to form red tide and cause pollution of waterhead.Therefore, the novel green corrosion inhibiting and descaling agent that exploitation is without phosphorus, biodegradability good, controlling index is simple and easy to realize, be fit to high concentration ratio operation even zero blowdown has become the developing direction of water treatment.
External non-phosphate environment-friendly type water conditioner starts from phase early 1990s as the exploitation of poly-epoxy succinic acid and poly aspartic acid, and China has also begun synthetic to poly-epoxy succinic acid and poly aspartic acid in the later stage nineties.Patent of invention CN1850661A discloses a kind of green environment-protective composite slow-corrosion scale resistor that recirculated cooling water is handled that is used for, by dirt dispersion agents such as poly-epoxy succinic acid, poly (sodium aspartate), hydrolytic polymaleic anhydride, Sunmorl N 60S, zinc salts with inhibiter is composite forms, have without phosphorus, biodegradable characteristics, be used for the super corrosion-mitigation scale-inhibition dissemination of recirculating cooling water system.Patent of invention CN101525185A discloses a kind of phosphate-free corrosion inhibition antisludging agent and preparation method thereof, and phosphate-free corrosion inhibition antisludging agent comprises poly-epoxy succinic acid, acrylic copolymer, azole, molybdate, pH value conditioning agent and water.Patent of invention CN101337744A discloses a kind of phosphate-free corrosion inhibition antisludging agent and synthetic method thereof; contain multiple functional groups such as carboxylic acid group, sulfonic group and sulfamate in this sintetics; utilize the synergy between them; make it have better scale inhibition, dispersing property; this product is without phosphorus simultaneously; biodegradable, favourable to the protection environment.Patent of invention CN101066811A discloses a kind of phosphate-free corrosion inhibition antisludging agent, it by poly aspartic acid or/and poly-epoxy succinic acid, polymaleic anhydride, vinylformic acid/2-acrylamide-2-methyl propane sulfonic acid multipolymer, zinc salt, natural organic high-molecular, molybdate and other component formed.Patent of invention CN188749A discloses a kind of phosphate-free corrosion inhibition antisludging agent, and it is made up of components such as sodium humate, poly-epoxy succinic acid, boraxs.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of phosphate-free corrosion inhibition antisludging agent, and it has realized high concentration ratio or even water coolant zero blowdown, has excellent inhibition, scale-inhibiting properties and favorable environment protection.
The technical problem to be solved in the present invention is realized by following scheme: a kind of phosphate-free corrosion inhibition antisludging agent, it is characterized in that: by natural product extract, sodium polyacrylate, zinc sulfate, four kinds of components of benzotriazole are formed, the shared weight percent of each component is natural product extract 30-70%, sodium polyacrylate 20-60%, zinc sulfate 2-15%, benzotriazole 1-5%, described natural product extract is by sulfonated lignin, sodium humate, three kinds of components of tannin are formed, and the shared weight percent of each component is lignosulfonic acid 30-60%, sodium humate 30-60%, tannin 2-15%.
Advantage of the present invention is:
1, the simple uniqueness of this phosphate-free corrosion inhibition antisludging agent component is no phosphorus product, has favorable environment protection, can avoid having alleviated environmental pollution because the discharging of phosphorus causes the eutrophication problem of water quality.Owing to not phosphorous, avoided the deposition of calcium phosphate, it is simple and easy to control that scale inhibition is handled, and the generation of calcium carbonate scale is had the good restraining effect, improved the heat transfer coefficient of equipment, reduces equipment energy consumption.Use it greatly to reduce the breeding of microorganism, the growth to bacterium simultaneously has certain restraining effect, can reduce the processing costs of Biocidal algae-killing agent.
2, water saving, phosphate-free corrosion inhibition antisludging agent is to calcium and alkali tolerance height, the Cl of resisting high-concentration
-And SO
4 2-Corrosion, the pH scope of adaptation is wide, for recirculated water in high concentration multiple operation even zero blowdown operation, reduce sewage discharge condition be provided.
3, phosphate-free corrosion inhibition antisludging agent has and peels off old dirt, and the system of fouling is played the on-line cleaning effect, can avoid the generation of underdeposit corrosion.
4, natural product such as sodium humate is through processing, with invalid Impurity removal wherein, overcome in the uses such as traditional sodium humate the shortcoming that influences system's operation because system's fluctuation of service, the system's body refuse that natural product instability, impurity cause more increases.
5, system's operational process controlling index simply is easy to realize, only needs a few index such as detection system pH value to get final product.
The product performance test:
1, static resistance CaCO
3The dirt effect
Tosca method principle: be prepared into test solution with preparation water and the water conditioner that contains a certain amount of bicarbonate radical and calcium ion, impelling the Calcium hydrogen carbonate accelerate decomposition under heating condition is CaCO
3, reach the Ca that measures after the balance in the test solution
2+Concentration, Ca
2+More then this medicament scale-inhibiting properties is good more for concentration.
Static resistance CaCO
3The test conditions of dirt: 500ml contains certain density Scale inhibitors, Ca with the deionized water configuration
2+Mass concentration 240mg/L,, HCO
3 -Mass concentration 732mg/L, and to regulate pH with borax be 9.0, is statically placed in then in the water bath with thermostatic control, 80 ℃ of temperature, behind the insulation 10h, cooling is filtered with the millipore filter of 0.22 μ m, with EDTA method mensuration Ca
2+Concentration is done blank test simultaneously.
Scale inhibition performance η calculates as follows:
η＝C
1-C
0/C
2-C
0
C
1Calcium ion concn mg/L behind the-Jia Scale inhibitors after the test solution test;
C
0-do not add the calcium ion concn mg/L after the blank test solution test of Scale inhibitors;
C
2Calcium ion concn mg/L in the test solution for preparing before-the test.
This phosphate-free corrosion inhibition antisludging agent is done the static-state scale inhibition test, and concrete outcome is as follows:
Table 1 CaCO
3The scale inhibition performance of dirt
| Embodiment | Drug concentration (mg/L) | Scale inhibition performance % |
| 1 | 40 | 88.79 |
| 2 | 40 | 81.91 |
| 3 | 40 | 80.97 |
| 4 | 40 | 79.52 |
| 5 | 40 | 92.38 |
2, Bubbling method is measured effect
The assessment of performance of water treatment agent has several different methods, and every kind all has its adaptability and can be with reference to property.And Bubbling method is compared with stationary method and more is of practical significance, because the Calcium hydrogen carbonate in the water be heated and aeration condition under resolve into lime carbonate and carbonic acid gas, Bubbling method is simulated field water coolant condition just, the final steady concentration of measuring calcium ion, calcium ion concn is big more, and this scale-inhibiting properties of handling medicament is good more.
Measure the scale inhibition performance method with Bubbling method:
Get the 500mL volumetric flask, add required calcium salt stock solution 250mL, distilled water, required carbonate stock solution successively, accurately add the amount of the required Scale inhibitors of experiment, be settled to scale marks, shake up with distilled water.This liquid is the water sample that contains 240mg (6.00mmol) calcium ion and 732mg (12.0mmol) bicarbonate ion among the 1L.Solution in the above-mentioned volumetric flask is poured in the flask of 500mL, is under the 80L/h at the bubbling gas flow, and flask places 60 ℃ water-bath, behind the constant temperature experiment required time, powered-down is cooled to room temperature with test solution, filter, with the steady concentration of EDTA complexometric titration calcium ion.The high more explanation medicament of the steady concentration of calcium ion is also high more to the scale inhibition performance of lime carbonate in the solution.Scale inhibition performance can be represented by the steady concentration (X) of calcium ion:
X＝V
3×C×40.08÷50.00×1000＝1603×V
3×C
In the formula:
V
3-mensuration calcium ion steady concentration consumes the volume of EDTA standardized solution, mL
The concentration of C-EDTA standardized solution, mol/L;
50.00-pipette the volume of stablizing calcium ion concn solution, mL;
40.08-with 1.00mLEDTA standard titration solution [C
(EDTA)=1.00mol/L] quality of the suitable calcium ion of representing with mg;
X-calcium ion steady concentration (mg/L).(interpolation punctuation mark)
To carrying out bubble test, result such as following table under the different adding consistencies of phosphate-free corrosion inhibition antisludging agent:
Table 2 difference adds the calcium ion steady concentration of dose
| Adding consistency (ppm) | 60ppm | 60ppm | 60ppm | 60ppm | 60ppm |
| Embodiment | 1 | 2 | 3 | 4 | 5 |
| The calcium ion steady concentration | 75.87 | 70.23 | 73.72 | 68.48 | 77.43 |
3, corrosion inhibition
Test method is with reference to GB/T18175-2000,50 ± 1 ℃ of test conditions temperature, and test piece material A3 carbon steel, 90 rev/mins of rotating speeds, pre-film, test period 72h,
Test-results
Phosphate-free corrosion inhibition antisludging agent and zinc are composite better synergistic slow corrosion effect, and has significantly reduced the inhibiter consumption, serves as test water quality with the brackish water of chlorion 2000mg/l, and different dosing dosage comparative results are as follows:
Table 3 corrosion inhibition relatively
| Embodiment | 1 | 2 | 3 | 4 | 5 |
| Adding consistency | 60ppm | 60ppm | 60ppm | 60ppm | 60ppm |
| Corrosion of carbon steel speed mm/a | 0.0501 | 0.0723 | 0.0689 | 0.0550 | 0.0430 |
| Brass corrosion speed mm/a | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 |
As shown in Table 3, this phosphate-free corrosion inhibition antisludging agent still has good corrosion inhibition to carbon steel under abominable condition of water quality, the brass corrosion inhibition is more or less the same.
Embodiment
Embodiment 1:
The shared weight of phosphate-free corrosion inhibition antisludging agent each component is: natural product extract 50kg, sodium polyacrylate 34kg zinc sulfate 13kg, benzotriazole 3kg.Wherein natural product extract is mixed by lignosulfonic acid 25kg, sodium humate 20kg, tannin 5kg.Mix above-mentioned each component to such an extent that solid materials is product.
Embodiment 2:
The shared weight of phosphate-free corrosion inhibition antisludging agent each component is: natural product extract 48kg, sodium polyacrylate 39kg, zinc sulfate 9kg, benzotriazole 4kg.Wherein natural product extract is mixed by lignosulfonic acid 23kg, sodium humate 20kg, tannin 5kg.Mix above-mentioned each component to such an extent that solid materials is product.
Embodiment 3:
The shared weight of phosphate-free corrosion inhibition antisludging agent each component is: natural product extract 40kg, sodium polyacrylate 40kg, zinc sulfate 15kg, benzotriazole 5kg.Wherein natural product extract is mixed by lignosulfonic acid 20kg, sodium humate 15kg, tannin 5kg.Mix above-mentioned each component to such an extent that solid materials is product.
Embodiment 4:
The shared weight of phosphate-free corrosion inhibition antisludging agent each component is: natural product extract 50kg, sodium polyacrylate 35kg, zinc sulfate 13kg, benzotriazole 2kg.Wherein natural product extract is mixed by lignosulfonic acid 20kg, sodium humate 25kg, tannin 5kg.Mix above-mentioned each component to such an extent that solid materials is product.
Embodiment 5:
The shared weight of phosphate-free corrosion inhibition antisludging agent each component is: natural product extract 50kg, sodium polyacrylate 35kg, zinc sulfate 13kg, benzotriazole 2kg.Wherein natural product extract is mixed by lignosulfonic acid 22kg, sodium humate 22kg, tannin 6kg.Mix above-mentioned each component to such an extent that solid materials is product.
Claims (1)
1. phosphate-free corrosion inhibition antisludging agent, it is characterized in that: form by natural product extract, sodium polyacrylate, zinc sulfate, four kinds of components of benzotriazole, the shared weight percent of each component is natural product extract 30-70%, sodium polyacrylate 20-60%, zinc sulfate 2-15%, benzotriazole 1-5%, described natural product extract is made up of sulfonated lignin, sodium humate, three kinds of components of tannin, and the shared weight percent of each component is lignosulfonic acid 30-60%, sodium humate 30-60%, tannin 2-15%.
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|---|---|---|---|
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| CN101967024B CN101967024B (en) | 2012-06-27 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126796A (en) * | 2011-03-31 | 2011-07-20 | 重庆瑞宝水处理化学品有限公司 | Boiler water treatment composite medicament |
| CN103498163A (en) * | 2013-10-16 | 2014-01-08 | 合肥华清金属表面处理有限责任公司 | Environment-friendly seawater corrosion inhibitor containing plant extracts and preparation method for environment-friendly seawater corrosion inhibitor |
| CN104310605A (en) * | 2014-10-22 | 2015-01-28 | 山东华亚环保科技有限公司 | Scale inhibitor used for boiler circulating water |
| CN104528964A (en) * | 2014-12-24 | 2015-04-22 | 芜湖协诚金属制品有限公司 | Phosphorus-free composite corrosion and scale inhibitor |
| CN105000683A (en) * | 2015-07-10 | 2015-10-28 | 杨红微 | Phosphorus-free, green and environment-friendly slow-release scale inhibitor |
| CN106495294A (en) * | 2016-11-09 | 2017-03-15 | 河南省科学院能源研究所有限公司 | A kind of corrosion-mitigation scale-inhibition antibacterial and preparation method thereof |
| CN106745852A (en) * | 2016-12-15 | 2017-05-31 | 钦州市钦南区科学技术情报研究所 | A kind of phosphate-free corrosion inhibition antisludging agent and preparation method thereof |
| CN107162224A (en) * | 2017-05-31 | 2017-09-15 | 四川奥恒环保科技有限公司 | A kind of corrosion inhibiting and descaling agent and preparation method thereof |
| CN107381757A (en) * | 2017-08-03 | 2017-11-24 | 合肥隆延科技有限公司 | Domestic sewage treating compound |
| CN108821452A (en) * | 2018-06-28 | 2018-11-16 | 芜湖市棠华建材科技有限公司 | The slow-release scale inhibitor of industrial circulating water system |
| CN109056378A (en) * | 2018-08-23 | 2018-12-21 | 湖州南浔维意纺织有限公司 | A kind of Phosphateless environmentally friendly chelated dispersants |
| CN112093918A (en) * | 2020-08-31 | 2020-12-18 | 中化化工科学技术研究总院有限公司 | Humic acid phosphorus-free corrosion and scale inhibitor and preparation method thereof |
| WO2024074005A1 (en) * | 2022-10-08 | 2024-04-11 | 广东邦普循环科技有限公司 | Wet-process phosphoric acid scale-dissolving agent, preparation method therefor, and use thereof |
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|---|---|---|---|---|
| CN102126796B (en) * | 2011-03-31 | 2012-07-25 | 重庆瑞宝水处理化学品有限公司 | Boiler water treatment composite medicament |
| CN102126796A (en) * | 2011-03-31 | 2011-07-20 | 重庆瑞宝水处理化学品有限公司 | Boiler water treatment composite medicament |
| CN103498163A (en) * | 2013-10-16 | 2014-01-08 | 合肥华清金属表面处理有限责任公司 | Environment-friendly seawater corrosion inhibitor containing plant extracts and preparation method for environment-friendly seawater corrosion inhibitor |
| CN104310605A (en) * | 2014-10-22 | 2015-01-28 | 山东华亚环保科技有限公司 | Scale inhibitor used for boiler circulating water |
| CN104310605B (en) * | 2014-10-22 | 2016-06-08 | 王兴霞 | A kind of antisludging agent for boiler recirculated water |
| CN104528964A (en) * | 2014-12-24 | 2015-04-22 | 芜湖协诚金属制品有限公司 | Phosphorus-free composite corrosion and scale inhibitor |
| CN105000683A (en) * | 2015-07-10 | 2015-10-28 | 杨红微 | Phosphorus-free, green and environment-friendly slow-release scale inhibitor |
| CN106495294B (en) * | 2016-11-09 | 2019-03-01 | 河南省科学院能源研究所有限公司 | A kind of corrosion-mitigation scale-inhibition fungicide and preparation method thereof |
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| CN106745852A (en) * | 2016-12-15 | 2017-05-31 | 钦州市钦南区科学技术情报研究所 | A kind of phosphate-free corrosion inhibition antisludging agent and preparation method thereof |
| CN107162224A (en) * | 2017-05-31 | 2017-09-15 | 四川奥恒环保科技有限公司 | A kind of corrosion inhibiting and descaling agent and preparation method thereof |
| CN107381757A (en) * | 2017-08-03 | 2017-11-24 | 合肥隆延科技有限公司 | Domestic sewage treating compound |
| CN108821452A (en) * | 2018-06-28 | 2018-11-16 | 芜湖市棠华建材科技有限公司 | The slow-release scale inhibitor of industrial circulating water system |
| CN109056378A (en) * | 2018-08-23 | 2018-12-21 | 湖州南浔维意纺织有限公司 | A kind of Phosphateless environmentally friendly chelated dispersants |
| CN112093918A (en) * | 2020-08-31 | 2020-12-18 | 中化化工科学技术研究总院有限公司 | Humic acid phosphorus-free corrosion and scale inhibitor and preparation method thereof |
| CN112093918B (en) * | 2020-08-31 | 2022-05-31 | 中化化工科学技术研究总院有限公司 | Humic acid phosphorus-free corrosion and scale inhibitor and preparation method thereof |
| WO2024074005A1 (en) * | 2022-10-08 | 2024-04-11 | 广东邦普循环科技有限公司 | Wet-process phosphoric acid scale-dissolving agent, preparation method therefor, and use thereof |
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