CN104891680A - Non-phosphorus corrosion and scale inhibitor and preparation method thereof - Google Patents
Non-phosphorus corrosion and scale inhibitor and preparation method thereof Download PDFInfo
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- CN104891680A CN104891680A CN201510231308.1A CN201510231308A CN104891680A CN 104891680 A CN104891680 A CN 104891680A CN 201510231308 A CN201510231308 A CN 201510231308A CN 104891680 A CN104891680 A CN 104891680A
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- phosphate
- corrosion inhibition
- antisludging agent
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Abstract
The invention relates to a non-phosphorus corrosion and scale inhibitor and a preparation method thereof. The non-phosphorus corrosion and scale inhibitor comprises the following components in mass percentage: 25% to 40% of sulfonic acid methylamine-based poly-epoxysuccinic acid, 20% to 30% of sodium molybdate, 12% to 30% of maleic acid-acrylic acid copolymer, 3% to 5% of oxidized graphene aqueous dispersion, 3% to 6% of fatty alcohol-polyoxyethylene ether, and 15% to 40% of zinc sulfate aqueous solution. According to the technical scheme of the invention, based on the synergistic effect of all components in the non-phosphorus corrosion and scale inhibitor, the trace elimination of pollutants can be realized, and the performance of the non-phosphorus corrosion and scale inhibitor is greatly improved after the compounding process of the components. In this way, the synergistic effect of physical absorption and chemical adsorption for pollutants is effectively realized. Therefore, the non-phosphorus corrosion and scale inhibitor can be applied in feed water wider in pH range and temperature range. The non-phosphorus corrosion and scale inhibitor is simple in production process, free of three-wastes discharge, and good in stability and water-soluble performance. The main components of the non-phosphorus corrosion and scale inhibitor are biodegradable, non-toxic, phosphorus-free, pollution-free, non-corrosive, small in dosage and environment-friendly.
Description
Technical field
The invention belongs to water-treatment technology field, relate to a kind of phosphate-free corrosion inhibition antisludging agent and preparation method thereof.
Background technology
At present, in circulating water system inhibiter particularly in Closed Cycle water system metallic corrosion situation serious, domestic and international inhibiter is mainly chromic salt, silicate, molybdate, nitrite, organophosphate and other mixture.Chromic salt, nitrite pollution environment, silicate has fouling risk, and phosphorous formula, easily causes secondary pollution to water body, does not meet environment protection requirement, and product performance are uneven, and inhibition, scale-inhibiting properties are not high, function singleness.Therefore, research and develop a kind of practical environment-friendly type phosphate-free corrosion inhibition antisludging agent to be widely used value.
Summary of the invention
The object of the invention is to the deficiency of the existence for prior art, a kind of environmental type phosphate-free corrosion inhibition antisludging agent is provided.
Present invention also offers the preparation method of above-mentioned phosphate-free corrosion inhibition antisludging agent.
The present invention is achieved through the following technical solutions:
A kind of phosphate-free corrosion inhibition antisludging agent of the present invention, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 25 ~ 40%,
Sodium orthomolybdate 20 ~ 30%,
Maleic acid-acrylic acid copolymer 12 ~ 30%,
Graphene oxide aqueous dispersions 3 ~ 5%,
Fatty alcohol-polyoxyethylene ether 3 ~ 6%,
Zinc sulfate solution 15 ~ 40%.
Described graphene oxide aqueous dispersions, concentration is 1.5 ~ 2mg/ml, and the graphene oxide in graphene oxide aqueous dispersions is the modified graphene that carbon-coating surface has hydroxyl, carboxyl or carbonyl functional group, and the number of plies is 15 ~ 20 layers; Particle diameter is 5 ~ 10nm;
Described maleic acid-acrylic acid copolymer, solids content 45 ~ 55wt%, free monomer (in toxilic acid)≤9.0wt%;
Described fatty alcohol-polyoxyethylene ether, the polymerization degree is 18 ~ 20;
Described zinc sulfate solution massfraction is 10 ~ 15%.
Above-mentioned phosphate-free corrosion inhibition antisludging agent, the component of preferred following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
Sodium orthomolybdate 22%,
Maleic acid-acrylic acid copolymer 16%,
Graphene oxide aqueous dispersions 4%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 23%.
Phosphate-free corrosion inhibition antisludging agent of the present invention, working concentration is 10 ~ 50mg/L, preferably 20 ~ 30mg/l.
Phosphate-free corrosion inhibition antisludging agent of the present invention, its pH value scope of application is 7 ~ 11.5, and temperature applicable range is 0 ~ 100 DEG C; Preferred pH value scope 8.5 ~ 11.5, temperature range 20 ~ 100 DEG C.
The preparation method of above-mentioned phosphate-free corrosion inhibition antisludging agent is:
Sulfonic acid methylamino poly-epoxy succinic acid, Sodium orthomolybdate, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions are mixed in proportion, be heated to 65 ~ 95 DEG C, drip zinc sulfate solution in 1.5 ~ 2.0h, supersound process 15 ~ 20min, is then warming up to 105 DEG C, add fatty alcohol-polyoxyethylene ether, backflow 0.5 ~ 1h, then material is cooled to 75 ~ 85 DEG C, filtered while hot, filtrate is lowered the temperature, and is phosphate-free corrosion inhibition antisludging agent of the present invention.
Sulfonic acid methylamino poly-epoxy succinic acid (SMA/PESA) is a kind of multifunctional non-phosphate corrosion inhibiting and descaling agent of excellence, compared with PESA, scale-inhibiting properties and corrosion inhibition significantly improve, there is good composite synergistic effect, containing multiple hydrophilic radicals such as carboxyl, ether, amido, hydroxyl, sulfonic groups in structure, it not only can improve compound dissolution effectively, also can form coordination compound in metallic surface and chemisorption occur, the synergistic effect of multiple functional group makes its corrosion and scale inhibition performance significantly improve.
Sodium orthomolybdate, it is a kind of New Type Water Treatment Chemicals that application is more at present, toxicity is lower, environmental pollution pollution level is low, normal with poly-phosphate, gluconate, zinc salt, the composite use of benzotriazole, the usage quantity of molybdate can be reduced, raising corrosion mitigating effect, molybdate thermostability is high, can be used for the circulating water system of the high and local superheating of heat flow density.
Maleic acid-acrylic acid copolymer (MA/AA), have very strong dissemination to carbonate etc., thermostability is high, can use, have good consistency and synergistic function with other water treatment agent under the mal-conditions such as 300 DEG C of high temperature.To the generation of the incrustation scale comprising phosphoric acid salt, there is good restraining effect, scale-inhibiting properties and resistance to elevated temperatures excellence.
Graphene oxide aqueous dispersions, is prepared by graphene oxide film and obtains, and can not precipitate, and graphene oxide is a kind of flexible material of non-traditional kenel, has polymkeric substance, colloid, film, and amphiphilic characteristic.Graphene oxide is regarded as hydroaropic substance for a long time, and it has superior dispersiveness in water, but, related experiment result shows, in fact graphene oxide has amphipathic, graphene oxide can as interfacial agent Presence of an interface, and reduce the energy between interface.Graphene oxide is similar to carbon nanotube structure, there is the functional group that higher specific surface area and surface are abundant, its specific surface area can reach 2600 meters squared per gram, its surperficial a large amount of active group is as carboxyl, carbonyl, hydroxyl, epoxy group(ing) etc., absorption for pollutent especially heavy metal provides sufficient avtive spot, the trace that can realize pollutent is eliminated, and the synergistic effect of multiple functional group can improve compound dissolution effectively simultaneously, and its scale-inhibiting properties is significantly improved.
Fatty alcohol-polyoxyethylene ether (AEO), it is a kind of nonionogenic tenside, ehter bond in molecule is not easily destroyed by acid, alkali, and stability is higher, better water-soluble, electrolyte-resistant, be easy to biological degradation, compatibleness is good, insensitive to hard water, but along with the rising of water temperature, its solubleness can reduce gradually.In the scope that pH is 3 ~ 11, fatty alcohol-polyoxyethylene ether hydrolysis-stable.
Zinc sulfate, ionizes out Zn in water
2+, with sulfonic acid methylamino poly-epoxy succinic acid and Sodium orthomolybdate composite, have synergistic function, corrosion inhibition rate significantly strengthens, and also can provide sterilization simultaneously.
In phosphate-free corrosion inhibition antisludging agent of the present invention, with sulfonic acid methylamino poly-epoxy succinic acid and Sodium orthomolybdate for corrosion inhibiting and descaling agent main component, maleic acid-acrylic acid copolymer is auxiliary corrosion inhibiting and descaling agent, add graphene oxide aqueous dispersions and fatty alcohol-polyoxyethylene ether, the phosphate-free corrosion inhibition antisludging agent of obtained a kind of environmental protection simultaneously.Wherein sulfonic acid methylamino poly-epoxy succinic acid, Sodium orthomolybdate and maleic acid-acrylic acid copolymer anticorrosion-antiscaling effect are excellent, and the composite rear synergistic function of three is obvious, and has good degradation property, does not pollute environment.After adding zinc salt, sulfonic acid methylamino poly-epoxy succinic acid, Sodium orthomolybdate and Zn
2+there is good synergistic effect, the slowly-releasing scale inhibition effect of the metals such as carbon steel is obviously strengthened.Graphene oxide aqueous dispersions, good with sulfonic acid methylamino poly-epoxy succinic acid, Sodium orthomolybdate and maleic acid-acrylic acid copolymer compatibility, there is good absorption property simultaneously, can trace removal of pollutants.Mentioned component and tensio-active agent fatty alcohol-polyoxyethylene ether composite after, water-soluble and stability strengthens, and can realize long time stored, obvious to pollutent especially heavy metal compatibilization, especially to Ca
2+, CO
3 2-, SO
4 2-plasma scale inhibition effect is remarkable; phosphate-free corrosion inhibition antisludging agent of the present invention can be adsorbed on metallic surface and forms the very thin film of one deck; protection metal is from the corrosion of air and hazardous medium; effectively can suppress carbon steel; copper, stainless steel, the corrosions of metal such as aluminium; can use in wider feedwater pH scope and temperature, there is the advantage that current other phosphate-free corrosion inhibition antisludging agents used are incomparable.
Compared with prior art, the beneficial effect of phosphate-free corrosion inhibition antisludging agent of the present invention and preparation method thereof is:
(1) synergistic effect of multiple functional group that each component contains can improve compound dissolution effectively, the trace that can realize pollutent is eliminated, its corrosion and scale inhibition performance is made significantly to improve after composite, effectively can realize the synergy of pollutent physical adsorption and chemisorption, can use in wider feedwater pH scope and temperature.
(2) production technique is simple, and without " three wastes " discharge, stability and good water solubility, main component is biodegradable, nontoxic, without phosphorus, pollution-free, non-corrosiveness, and less developer is environmentally friendly.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples and comparative example will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.To those of ordinary skill in the art, the improvement made without departing from the inventive concept of the premise, all belongs to protection scope of the present invention.
The embodiment of the present invention each raw material used is bought by market and is obtained;
Graphene oxide aqueous dispersions used is that Nanjing Xian Feng Nono-material Science & Technology Ltd. produces, concentration is 1.5mg/ml, contained graphene oxide is the modified graphene that carbon-coating surface has hydroxyl, carboxyl or carbonyl functional group, and the number of plies is 15 ~ 20 layers, and particle diameter is 5 ~ 10nm;
Maleic acid-acrylic acid copolymer used, specification is: solids content 48wt%, free monomer (in toxilic acid) 9.0wt%, number-average molecular weight 450 ~ 700;
Described fatty alcohol-polyoxyethylene ether, the polymerization degree is 18 ~ 20.
Embodiment 1
The present embodiment phosphate-free corrosion inhibition antisludging agent, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
Sodium orthomolybdate 22%,
Maleic acid-acrylic acid copolymer 16%,
Graphene oxide aqueous dispersions 4%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 23%,
Described zinc sulfate solution massfraction is 12%.
The preparation method of the present embodiment phosphate-free corrosion inhibition antisludging agent is:
Take sulfonic acid methylamino poly-epoxy succinic acid, Sodium orthomolybdate, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions in proportion respectively, add successively in container, mixing, be heated to 90 DEG C, drip zinc sulfate solution in 2.0h, supersound process 20min, is then warming up to 105 DEG C, add fatty alcohol-polyoxyethylene ether, backflow 1h, then material is cooled to 80 DEG C, filtered while hot, filtrate is lowered the temperature, and is the present embodiment phosphate-free corrosion inhibition antisludging agent.
Embodiment 2
The present embodiment phosphate-free corrosion inhibition antisludging agent, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 25%,
Sodium orthomolybdate 20%,
Maleic acid-acrylic acid copolymer 12%,
Graphene oxide aqueous dispersions 3%,
Fatty alcohol-polyoxyethylene ether 3%,
Zinc sulfate solution 37%,
Described zinc sulfate solution massfraction is 12%.
The preparation method of the present embodiment phosphate-free corrosion inhibition antisludging agent is:
Take sulfonic acid methylamino poly-epoxy succinic acid, Sodium orthomolybdate, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions in proportion respectively, add successively in container, mixing, be heated to 80 DEG C, drip zinc sulfate solution in 1.5h, supersound process 15min, is then warming up to 105 DEG C, add fatty alcohol-polyoxyethylene ether, backflow 0.5h, then material is cooled to 75 DEG C, filtered while hot, filtrate is lowered the temperature, and is the present embodiment phosphate-free corrosion inhibition antisludging agent.
Embodiment 3
The present embodiment phosphate-free corrosion inhibition antisludging agent, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 40%,
Sodium orthomolybdate 22%,
Maleic acid-acrylic acid copolymer 15%,
Graphene oxide aqueous dispersions 4%,
Fatty alcohol-polyoxyethylene ether 4%,
Zinc sulfate solution 15%.
Described zinc sulfate solution massfraction is 12%.
The preparation method of the present embodiment phosphate-free corrosion inhibition antisludging agent is:
Take sulfonic acid methylamino poly-epoxy succinic acid, Sodium orthomolybdate, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions in proportion respectively, add successively in container, mixing, be heated to 65 DEG C, drip zinc sulfate solution in 2.0h, supersound process 20min, is then warming up to 105 DEG C, add fatty alcohol-polyoxyethylene ether, backflow 1h, then material is cooled to 85 DEG C, filtered while hot, filtrate is lowered the temperature, and is the present embodiment phosphate-free corrosion inhibition antisludging agent.
Embodiment 4
The present embodiment phosphate-free corrosion inhibition antisludging agent, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
Sodium orthomolybdate 30%,
Maleic acid-acrylic acid copolymer 12%,
Graphene oxide aqueous dispersions 5%,
Fatty alcohol-polyoxyethylene ether 6%,
Zinc sulfate solution 17%,
Described zinc sulfate solution massfraction is 10%, and preparation method is with embodiment 1.
Embodiment 5
The present embodiment phosphate-free corrosion inhibition antisludging agent, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 25%,
Sodium orthomolybdate 20%,
Maleic acid-acrylic acid copolymer 30%,
Graphene oxide aqueous dispersions 4%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 16%,
Described zinc sulfate solution massfraction is 15%, and preparation method is with embodiment 1.
Embodiment 6
The present embodiment phosphate-free corrosion inhibition antisludging agent, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 35%,
Sodium orthomolybdate 25%,
Maleic acid-acrylic acid copolymer 15%,
Graphene oxide aqueous dispersions 5%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 15%,
Described zinc sulfate solution massfraction is 12%, and preparation method is with embodiment 1.
Comparative example 1
Sulfonic acid methylamino poly-epoxy succinic acid (MA/PESA) is replaced with reference to embodiment 1, SPESA.
Comparative example 2
With reference to embodiment 1, do not add graphene oxide aqueous dispersions, comprise the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
Sodium orthomolybdate 22%,
Maleic acid-acrylic acid copolymer 16%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 27%.
Comparative example 3
A kind of phosphate-free corrosion inhibition antisludging agent:
AL-one 70%，
AA/AHPS co-polymer of sulfonate 12%,
KOH 1%，
All the other are deionized water.
Preparation method: raw material adds in container in proportion successively, stirring at room temperature 1 ~ 1.5h.
Application test and result
1, test sample and grouping:
Experimental group 1 ~ 6, uses the phosphate-free corrosion inhibition antisludging agent that the present invention obtains, respectively corresponding embodiment 1 ~ 6;
Control group 1,2 and 3, use the corrosion inhibiting and descaling agent that comparative example 1,2 and 3 is obtained respectively, A is sulfonic acid methylamino poly-epoxy succinic acid, and B is Sodium orthomolybdate, and C is maleic acid-acrylic acid copolymer, and D is zinc sulfate solution.
2, CaCO is hindered
3performance measurement
Tosca method principle: be prepared into test solution with the preparation water containing a certain amount of bicarbonate radical and calcium ion and corrosion inhibiting and descaling agent.Calcium hydrogen carbonate accelerate decomposition is impelled to be CaCO in a heated condition
3.The Ca in test solution is measured after reaching balance
2+concentration, Ca
2+concentration is larger, and then this medicament scale-inhibiting properties is better.
Static resistance CaCO
3test conditions: with deionized water configuration 500ml concentration 10mg/L corrosion inhibiting and descaling agent, Ca
2+mass concentration 260mg/L, HCO
3-mass concentration 760mg/L, and regulate pH to be 9.0 with sodium hydroxide, be then statically placed in water bath with thermostatic control, temperature 80 DEG C, after insulation 10h, cooling, filters with the millipore filter of 0.22 μm, measures Ca by EDTA method
2+concentration, does blank test simultaneously.
Scale inhibition performance η calculates as follows:
η＝(C
1-C
0)/(C
2-C
0)×100%
C
1-add the calcium ion concn after test solution test after corrosion inhibiting and descaling agent, mg/L
C
0-do not add the calcium ion concn after the blank test solution test of corrosion inhibiting and descaling agent, mg/L
C
2calcium ion concn in the test solution prepared before-test, mg/L.
3, CaSO is hindered
4performance measurement
Test conditions: with deionized water configuration 500ml concentration 10mg/L corrosion inhibiting and descaling agent, Ca
2+mass concentration 260mg/L, SO
4 2-mass concentration 760mg/L, and regulate pH to be 9.0 with sodium hydroxide, be then statically placed in water bath with thermostatic control, temperature 80 DEG C, after insulation 10h, cooling, filters with the millipore filter of 0.22 μm, measures Ca by EDTA method
2+concentration, does blank test simultaneously.
Method of calculation are with reference to resistance CaCO
3performance measurement.
4, dispersing iron oxide performance measurement
Test conditions: with deionized water configuration 500ml concentration 10mg/L corrosion inhibiting and descaling agent, Ca
2+mass concentration 60mg/L, Fe
2+mass concentration 10mg/L, and regulate pH to be 9.0 with the borax of mass concentration 15%, and after stable, rapid stirring 15min, then be statically placed in water bath with thermostatic control, temperature 50 C, after insulation 10h, cooling, get supernatant liquid, measure transmittance (420nm) with spectrophotometric, transmittance is less, and dispersing iron oxide performance is better.
5, corrosion inhibition test
Test water: total hardness is 645mg/L, Ca
2+for 455mg/L, total alkalinity is 348mg/L, SO
4 2-for
140mg/L, Cl
-for 131mg/L.
Dosing: 20mg/L
Test method: adopt rotary hanging plate weight-loss method: carry out corrosion inhibition evaluation according to HG/T2159-91 method, test temperature: 50 DEG C, speed of rotation: 80r/min, test period: 72h, material is stainless steel, and it the results are shown in Table 1.
6, the compatible performance measurement with flocculation agent
With flocculant poly aluminum chloride (PAC) and polyacrylamide (anionic, cationic, non-ionic type) compatibility test.
7, concrete outcome is as table 1
Table 1 performance measurement result
The above results shows, phosphate-free corrosion inhibition antisludging agent of the present invention has good scale inhibition and corrosion inhibition, and over-all properties is better, and cost performance is higher.
Claims (9)
1. a phosphate-free corrosion inhibition antisludging agent, is characterized in that, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 25 ~ 40%,
Sodium orthomolybdate 20 ~ 30%,
Maleic acid-acrylic acid copolymer 12 ~ 30%,
Graphene oxide aqueous dispersions 3 ~ 5%,
Fatty alcohol-polyoxyethylene ether 3 ~ 6%,
Zinc sulfate solution 15 ~ 40%.
2. phosphate-free corrosion inhibition antisludging agent according to claim 1, it is characterized in that: described graphene oxide aqueous dispersions, concentration is 1.5 ~ 2mg/ml, graphene oxide in graphene oxide aqueous dispersions is the modified graphene that carbon-coating surface has hydroxyl, carboxyl or carbonyl functional group, the number of plies is 15 ~ 20 layers, and particle diameter is 5 ~ 10nm.
3. phosphate-free corrosion inhibition antisludging agent according to claim 1, is characterized in that: described maleic acid-acrylic acid copolymer, solids content 45 ~ 55wt%, free monomer (in toxilic acid)≤9.0wt%.
4. phosphate-free corrosion inhibition antisludging agent according to claim 1, is characterized in that: described fatty alcohol-polyoxyethylene ether, and the polymerization degree is 18 ~ 20.
5. phosphate-free corrosion inhibition antisludging agent according to claim 1, is characterized in that: described zinc sulfate solution massfraction is 10 ~ 15%.
6. phosphate-free corrosion inhibition antisludging agent according to claim 1, is characterized in that, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
Sodium orthomolybdate 22%,
Maleic acid-acrylic acid copolymer 16%,
Graphene oxide aqueous dispersions 4%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 23%.
7. the phosphate-free corrosion inhibition antisludging agent according to the arbitrary claim of 1-6, is characterized in that: working concentration is 10 ~ 50mg/L, and its pH value scope of application is 7 ~ 11..5, and temperature applicable range is 0 ~ 100 DEG C.
8. phosphate-free corrosion inhibition antisludging agent according to claim 7, is characterized in that: working concentration is 20 ~ 30mg/l, and its pH value scope of application is 8.5 ~ 11.5, and temperature applicable range is 20 ~ 100 DEG C.
9. the preparation method of phosphate-free corrosion inhibition antisludging agent described in the arbitrary claim of above-mentioned 1-6, it is characterized in that: sulfonic acid methylamino poly-epoxy succinic acid, Sodium orthomolybdate, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions are mixed in proportion, be heated to 65 ~ 95 DEG C, zinc sulfate solution is dripped in 1.5 ~ 2.0h, supersound process 15 ~ 20min, then 105 DEG C are warming up to, add fatty alcohol-polyoxyethylene ether, backflow 0.5 ~ 1h, again material is cooled to 75 ~ 85 DEG C, filtered while hot, filtrate is lowered the temperature, and is phosphate-free corrosion inhibition antisludging agent of the present invention.
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| CN111377549A (en) * | 2020-03-13 | 2020-07-07 | 大唐绥化热电有限公司 | Special corrosion and scale inhibitor for recycling reclaimed water in power plant and preparation method thereof |
| CN112174343A (en) * | 2020-11-03 | 2021-01-05 | 西安热工研究院有限公司 | Green environment-friendly non-phosphorus scale and corrosion inhibitor and preparation method thereof |
| CN112919650A (en) * | 2021-01-21 | 2021-06-08 | 王齐繁 | Scale and corrosion inhibitor, composition for scale and corrosion inhibitor, preparation method and application thereof |
| CN113200617A (en) * | 2021-05-19 | 2021-08-03 | 上绍同烯达(绍兴)新材料科技有限公司 | Degradable non-phosphorus scale and corrosion inhibitor and preparation method thereof |
| WO2021168909A1 (en) * | 2020-02-28 | 2021-09-02 | 上海丰信环保科技有限公司 | Hyperbranched phosphorus-free scale inhibitor and preparation method therefor |
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| WO2021168909A1 (en) * | 2020-02-28 | 2021-09-02 | 上海丰信环保科技有限公司 | Hyperbranched phosphorus-free scale inhibitor and preparation method therefor |
| CN111377549A (en) * | 2020-03-13 | 2020-07-07 | 大唐绥化热电有限公司 | Special corrosion and scale inhibitor for recycling reclaimed water in power plant and preparation method thereof |
| CN112174343A (en) * | 2020-11-03 | 2021-01-05 | 西安热工研究院有限公司 | Green environment-friendly non-phosphorus scale and corrosion inhibitor and preparation method thereof |
| CN112919650A (en) * | 2021-01-21 | 2021-06-08 | 王齐繁 | Scale and corrosion inhibitor, composition for scale and corrosion inhibitor, preparation method and application thereof |
| CN113200617A (en) * | 2021-05-19 | 2021-08-03 | 上绍同烯达(绍兴)新材料科技有限公司 | Degradable non-phosphorus scale and corrosion inhibitor and preparation method thereof |
| CN113735321A (en) * | 2021-09-13 | 2021-12-03 | 北京可林维尔化工有限公司 | Reverse osmosis scale inhibitor and preparation method and application thereof |
| CN113735321B (en) * | 2021-09-13 | 2023-06-23 | 北京可林维尔化工有限公司 | Reverse osmosis scale inhibitor and preparation method and application thereof |
| CN113880270A (en) * | 2021-10-28 | 2022-01-04 | 汇科琪(天津)水质添加剂有限公司 | Steam condensate treating agent and preparation method thereof |
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