CN104843879A - Special corrosion and scale inhibitor for water reuse in power plant and preparation method thereof - Google Patents
Special corrosion and scale inhibitor for water reuse in power plant and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a special corrosion and scale inhibitor for water reuse in a power plant and a preparation method thereof. The special corrosion and scale inhibitor comprises the following components by weight percentage content: 25 to 40% of sulfonic methane amino poly epoxy succinic acid, 20 to 30% of N, N-diacetyl adipic dihydrazide, 12 to 30% of maleic acid-acrylic copolymer, 3 to 5% of graphene oxide aqueous dispersion, 3 to 6% of fatty alcohol-polyoxyethylene ether and 15 to 40% of zinc sulfate aqueous solution. The components of the corrosion and scale inhibitor achieve a synergistic effect, and can realize trace removal of pollutants, after the corrosion and scale inhibitor is compounded, the corrosion and scale inhibition properties are greatly improved, the synergistic effect of physical adsorption and chemical adsorption of the pollutants can be effectively realized, and the special corrosion and scale inhibitor can be used in a wider water pH scope and temperature, and has an excellent sterilizing effect. The production process is simple, three-waste emission is avoided, the stability and water solubility are good, and the main components are biodegradable, free of toxic, phosphorus, pollution and corrosivity, less in adding rate, and environment-friendly.
Description
Technical field
The invention belongs to water-treatment technology field, relate to a kind of corrosion inhibiting and descaling agent, be specifically related to a kind of Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor and preparation method thereof.
Background technology
Along with the worsening shortages of fresh water resource, middle water is considered to a kind of important undrinkable water resource and is applied to gradually in industrial circle.Industrial circle uses water rich and influential family, and 80% of town water is process water, and industrial circulating cooling water accounts for more than 60% of process water, relates to many industries such as petrochemical industry, electric power, chemical industry, metallurgy.At present a lot of power plant all with in water replacement fresh water as the make up water of the recycle system, especially be Southwestern United Stares area, its Land use systems is reuse after being mixed with fresh water by water in a part, or by it through processing more excellent water quality direct reuse further, to guarantee the safe operation of circulating cooling system.Reusing Intermediate Water of Power Plants is the Important Action alleviated shortage of water resources, improve water use efficiency.Treated sewage reusing, when recirculating cooling water system, can aggravate the problems such as the microbial growth of system, equipment corrosion, suspended substance be stagnant.Compared with among other purposes (direct reuse) of water need support and the guarantee of Stability Technique of Water Quality.
Although the Reusing Intermediate Water of Power Plants construction of China is started late, along with the reference deeply with to successful foreign experience of research, Treated sewage reusing is also set up in succession in the engineering of circulating cooling system.Such as, in sewage work of Beijing Gaobeidian City, water is used for Circulating Cooling Water of Power Plant system cools, Tianjin Development Zone Zhong Shui focuses on for strand Circulating Cooling Water of Power Plant system cools, in the discipline village sewage work of Tianjin, water is used for the village, Chen Tong Circulating Cooling Water of Power Plant system cools, and Huaibei City Treated sewage reusing engineering is used for Datang Tiger Mountain power station recirculating cooling water system cooling etc.Therefore, the water treatment technology developing Reusing Intermediate Water of Power Plants recirculating cooling water system becomes the development trend of industrial circulation water treatment.Current Treated sewage reusing special corrosion and scale inhibitor product category is few, spread in performance is uneven, scale-inhibiting properties is not high, and function singleness, mostly be phosphorous formula, easily cause secondary pollution to water body, do not meet environment protection requirement, therefore, research and develop a kind of multifunction environment-protection type Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor to be widely used value.
Summary of the invention
The object of the invention is to the deficiency of the existence for prior art, provide a kind of environmental type without phosphorus Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor.
Present invention also offers the preparation method of above-mentioned Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor.
The present invention is achieved through the following technical solutions:
A kind of Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor of the present invention, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 25 ~ 40%,
N, N'-diacetyl adipyl dihydrazide 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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor, the component of preferred following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
N, N'-diacetyl adipyl dihydrazide 22%,
Maleic acid-acrylic acid copolymer 16%,
Graphene oxide aqueous dispersions 4%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 23%.
Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor of the present invention, working concentration is 6 ~ 30mg/L, preferably 6 ~ 20mg/l.
Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor of the present invention, its pH value scope of application is 7.0 ~ 9.5, and temperature applicable range is 0 ~ 85 DEG C; Preferred range 10 ~ 85 DEG C.
The preparation method of above-mentioned Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor is:
By sulfonic acid methylamino poly-epoxy succinic acid, N; N'-diacetyl adipyl dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions are mixed in proportion, and are heated to 65 ~ 95 DEG C, drip zinc sulfate solution in 1.5 ~ 2.0h; supersound process 15 ~ 20min; then be warming up to 105 DEG C, 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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor 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, thus play enhancement to its corrosion and scale inhibition performance.
N; N'-diacetyl adipyl dihydrazide; there is the ability forming stable chelate with metal ion; good protective effect is had to " the copper evil " of polymkeric substance; be a kind of effective metal passivator, meanwhile, due to it, there is multiple biological activity and special functional group can form multiple bond complexes; make N, N'-diacetyl adipyl dihydrazide has scale inhibitor and bactericidal effect simultaneously.
Maleic acid-acrylic acid copolymer (MA/AA), to carbonate etc., there is very strong dissemination, thermostability is high, can use under the mal-conditions such as 300 DEG C of high temperature, with other water treatment agent, there is good consistency and synergistic function, 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+, composite with sulfonic acid methylamino poly-epoxy succinic acid, there is synergistic function, the corrosion inhibition rate of carbon steel etc. is significantly strengthened, also can provide sterilization simultaneously.
In Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor of the present invention; with sulfonic acid methylamino poly-epoxy succinic acid and N; N'-diacetyl adipyl dihydrazide is 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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor that obtained a kind of environmental protection is without phosphorus simultaneously.Wherein sulfonic acid methylamino poly-epoxy succinic acid, N, N'-diacetyl adipyl dihydrazide 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 and Zn
2+there is good synergistic effect, the slowly-releasing scale inhibition effect of the metals such as carbon steel is significantly improved.Graphene oxide aqueous dispersions and sulfonic acid methylamino poly-epoxy succinic acid, N, N'-diacetyl adipyl dihydrazide and maleic acid-acrylic acid copolymer compatibility good, 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; Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor of the present invention has the advantage of corrosion-mitigation scale-inhibition sterilization simultaneously; can be adsorbed on metallic surface and form the very thin film of one deck; protection metal, from the corrosion of dissolved oxygen and hazardous medium, can suppress carbon steel, copper effectively; stainless steel; the corrosions of metal such as aluminium, can use in wider feedwater pH scope and temperature, have the advantage that current other Reusing Intermediate Water of Power Plants special corrosion and scale inhibitors used are incomparable.
Compared with prior art, the beneficial effect of Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor 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, also have excellent sterilising effect concurrently simultaneously.
(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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
N, N'-diacetyl adipyl dihydrazide 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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor is:
Take sulfonic acid methylamino poly-epoxy succinic acid, N, N'-diacetyl adipyl dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions in proportion respectively, add successively in container; mixing, is heated to 90 DEG C, drips zinc sulfate solution in 2.0h; supersound process 20min; then be warming up to 105 DEG C, add fatty alcohol-polyoxyethylene ether, backflow 1h; again material is cooled to 80 DEG C; filtered while hot, filtrate is lowered the temperature, and is the present embodiment Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor.
Embodiment 2
The present embodiment Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 25%,
N, N'-diacetyl adipyl dihydrazide 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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor is:
Take sulfonic acid methylamino poly-epoxy succinic acid, N, N'-diacetyl adipyl dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions in proportion respectively, add successively in container; mixing, is heated to 80 DEG C, drips zinc sulfate solution in 1.5h; supersound process 15min; then be warming up to 105 DEG C, add fatty alcohol-polyoxyethylene ether, backflow 0.5h; again material is cooled to 75 DEG C; filtered while hot, filtrate is lowered the temperature, and is the present embodiment Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor.
Embodiment 3
The present embodiment Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 40%,
N, N'-diacetyl adipyl dihydrazide 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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor is:
Take sulfonic acid methylamino poly-epoxy succinic acid, N, N'-diacetyl adipyl dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersions in proportion respectively, add successively in container; mixing, is heated to 65 DEG C, drips zinc sulfate solution in 2.0h; supersound process 20min; then be warming up to 105 DEG C, add fatty alcohol-polyoxyethylene ether, backflow 1h; again material is cooled to 85 DEG C; filtered while hot, filtrate is lowered the temperature, and is the present embodiment Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor.
Embodiment 4
The present embodiment Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
N, N'-diacetyl adipyl dihydrazide 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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 25%,
N, N'-diacetyl adipyl dihydrazide 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 Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 35%,
N, N'-diacetyl adipyl dihydrazide 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%,
N, N'-diacetyl adipyl dihydrazide 22%,
Maleic acid-acrylic acid copolymer 16%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 27%.
Comparative example 3
Phosphorus-free reverse osmosis membrane 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 corrosion inhibiting and descaling 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 N, N'-diacetyl adipyl dihydrazide, 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 8mg/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 8mg/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 8mg/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 zinc sulfate 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, bactericidal property measures
Kill the bacterium performance test such as microorganism and coccus, bacillus and spirobacteria in water body.
6, 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.
7, the compatible performance measurement with flocculation agent
With flocculant poly aluminum chloride (PAC) compatibility test.
8, concrete outcome is as table 1
Table 1 performance measurement result
The above results shows, Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor of the present invention has good corrosion-mitigation scale-inhibition and bactericidal property, and over-all properties is better, and cost performance is higher.
Claims (9)
1. a Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor, is characterized in that, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 25 ~ 40%,
N, N'-diacetyl adipyl dihydrazide 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. Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor 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. Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor 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. Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor according to claim 1, is characterized in that: described fatty alcohol-polyoxyethylene ether, the polymerization degree is 18 ~ 20.
5. Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor according to claim 1, is characterized in that: described zinc sulfate solution massfraction is 10 ~ 15%.
6. Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor according to claim 1, is characterized in that, comprises the component of following mass percentage:
Sulfonic acid methylamino poly-epoxy succinic acid 30%,
N, N'-diacetyl adipyl dihydrazide 22%,
Maleic acid-acrylic acid copolymer 16%,
Graphene oxide aqueous dispersions 4%,
Fatty alcohol-polyoxyethylene ether 5%,
Zinc sulfate solution 23%.
7. the Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor according to the arbitrary claim of 1-6, is characterized in that: working concentration is 6 ~ 30mg/L, and its pH value scope of application is 7.0 ~ 9.5, and temperature applicable range is 0 ~ 85 DEG C.
8. Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor according to claim 7, is characterized in that: working concentration is 6 ~ 20mg/l, and its temperature applicable range is 10 ~ 85 DEG C.
9. the preparation method of Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor described in the arbitrary claim of above-mentioned 1-6, it is characterized in that: by sulfonic acid methylamino poly-epoxy succinic acid, N, N'-diacetyl adipyl dihydrazide, 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, be Reusing Intermediate Water of Power Plants special corrosion and scale inhibitor of the present invention.
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| CN106242096A (en) * | 2016-08-24 | 2016-12-21 | 北京国环清华环境工程设计研究院有限公司 | Reclaimed water reuse is in the preparation method and applications of the phosphate-free corrosion inhibition antisludging agent of power plant |
| CN107034473A (en) * | 2017-04-25 | 2017-08-11 | 天津师范大学 | A kind of friendly boiler hot-water corrosion inhibiter of efficient context and its application |
| 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 |
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| CN103210120A (en) * | 2010-10-13 | 2013-07-17 | 国民油井华高有限公司 | Releasable corrosion inhibitors |
| CN103030223A (en) * | 2011-09-29 | 2013-04-10 | 中国石油化工股份有限公司 | Treatment process of circulating cooling water with leaked ammonia nitrogen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106242096A (en) * | 2016-08-24 | 2016-12-21 | 北京国环清华环境工程设计研究院有限公司 | Reclaimed water reuse is in the preparation method and applications of the phosphate-free corrosion inhibition antisludging agent of power plant |
| CN107034473A (en) * | 2017-04-25 | 2017-08-11 | 天津师范大学 | A kind of friendly boiler hot-water corrosion inhibiter of efficient context and its application |
| 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 |
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