CN106277375A - A kind of environment-friendly type anti-incrustation corrosion inhibitor and its preparation method and application - Google Patents
A kind of environment-friendly type anti-incrustation corrosion inhibitor and its preparation method and application Download PDFInfo
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- CN106277375A CN106277375A CN201610891491.2A CN201610891491A CN106277375A CN 106277375 A CN106277375 A CN 106277375A CN 201610891491 A CN201610891491 A CN 201610891491A CN 106277375 A CN106277375 A CN 106277375A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
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Abstract
The invention discloses a kind of environment-friendly type anti-incrustation corrosion inhibitor and its preparation method and application, this anti-incrustation corrosion inhibitor is made up of according to the raw material of weight portion following: microcrystalline Cellulose 7 15 parts, acrylic emulsion 5 12 parts, Halloysitum Rubrum 23 31 parts, Polyethylene Glycol 15 23 parts, tributyl 2-acetylcitrate 38 parts.Halloysitum Rubrum is pulverized, processes 4 with the polyglycol solution heat of mixing and prepare mixture A；Tributyl 2-acetylcitrate is processed with microcrystalline Cellulose, dehydrated alcohol mix and blend and prepares mixture B；Mixture A and mixture B hybrid microwave are processed, is subsequently adding acrylic emulsion supersound process, through thermal agitation process, high-temperature calcination and get final product.The present invention has that corrosion inhibition is good, scale inhibition efficiency advantages of higher, it is possible to suppression microbial growth, effectively stops the cooling water corrosiveness to pipeline, preparation technology is simple, easily operated, safety and environmental protection, water quality will not be caused secondary pollution, environmentally friendly, good dispersion, do not reunite, shelf-stable.
Description
Technical field
The present invention relates to water-treatment technology field, specifically a kind of environment-friendly type anti-incrustation corrosion inhibitor and preparation method thereof and should
With.
Background technology
Due to the worsening shortages of freshwater resources, industrial circulating water cooling treatment medicament is increasingly subject to people's attention,
Recirculated cooling water, along with the overall process produced, accounts for the 70-80% of total water consumption, and recirculated cooling water the most constantly steams
Send out and concentrate so that cooling water pipeline fouling, corrosion phenomenon ratio more serious, easily grow bacterium algae, so that affecting the biography of equipment
Thermal effect and the service life of shortening equipment, for solving these problems, it is necessary to recirculated cooling water is carried out water treatment.Organic phosphine
Acid is a now widely used class water treatment agent, has good chemical stability, heat-resisting quantity and has that consumption is few, inhibition concurrently
With features such as scale effects.Additionally, organic phospho acid has the sequestering power of excellence to many metal ions, they solve system
The problem producing calcium carbonate scale, C-P key exists makes its stable chemical performance, more high temperature resistant, has substantially " threshold effect " and " work in coordination with
Effect ".Its defect is calcium phosphate scale, the zinc that organic phospho acid can not suppress to produce in phosphorus system and phosphorus zinc system water treatment formula effectively
Dirt and ferrum oxide deposition problems, phosphorus-containing wastewater discharge causes body eutrophication and marine red tide problem.It addition, corrosion inhibiting and descaling agent
Middle phosphorus content is higher and complicated components, and cost is high, and application is restricted.
Summary of the invention
It is an object of the invention to provide that a kind of anticorrosion-antiscaling effect is good, suppression microbial growth, anticorrosive, dispersibility
Get well, do not reunite, the environment-friendly type anti-incrustation corrosion inhibitor of shelf-stable and its preparation method and application, to solve above-mentioned background technology proposes
Problem.
For achieving the above object, the present invention provides following technical scheme:
A kind of environment-friendly type anti-incrustation corrosion inhibitor, is made up of according to the raw material of weight portion following: microcrystalline Cellulose 7-15 part, propylene yogurt
Liquid 5-12 part, Halloysitum Rubrum 23-31 part, Polyethylene Glycol 15-23 part, tributyl 2-acetylcitrate 3-8 part.
As the further scheme of the present invention: described environment-friendly type anti-incrustation corrosion inhibitor, by the following raw material group according to weight portion
Become: microcrystalline Cellulose 9-13 part, acrylic emulsion 7-10 part, Halloysitum Rubrum 25-29 part, Polyethylene Glycol 17-21 part, acetyl tributyl citrate
Tributyl 4-7 part.
As the further scheme of the present invention: described environment-friendly type anti-incrustation corrosion inhibitor, by the following raw material group according to weight portion
Become: microcrystalline Cellulose 11 parts, acrylic emulsion 8 parts, Halloysitum Rubrum 27 parts, Polyethylene Glycol 19 parts, tributyl 2-acetylcitrate 5 parts.
It is a further object of the present invention to provide the preparation method of a kind of environment-friendly type anti-incrustation corrosion inhibitor, comprise the steps of:
1) dehydrated alcohol of Polyethylene Glycol with its quality 5 times is mixed, prepare polyglycol solution；
2) Halloysitum Rubrum pulverized, cross 120 mesh sieves, mixing with polyglycol solution, and be heated to 68 DEG C, stirring at such a temperature
Process 45-50min, prepare mixture A；
3) tributyl 2-acetylcitrate is mixed with microcrystalline Cellulose, after stirring 5-10min, adding microcrystalline Cellulose quality 3
Dehydrated alcohol again, then stir process 20min at a temperature of 76 DEG C, prepare mixture B；
4) being mixed with mixture B by mixture A, microwave treatment 8min, microwave power is 800W, is subsequently adding acrylic emulsion,
Supersound process 30min at a temperature of 60 DEG C again, ultrasonic power is 600W, then stir process at a temperature of 135 DEG C
85min, then calcining 3h i.e. obtains anti-incrustation corrosion inhibitor at a temperature of 420 DEG C.
It is a further object of the present invention to provide the application in circulating water cooling treatment of the described anti-incrustation corrosion inhibitor.
Compared with prior art, the invention has the beneficial effects as follows:
It is excellent that the anti-incrustation corrosion inhibitor that the present invention prepares has under the synergism of each raw material that corrosion inhibition is good, scale inhibition efficiency is high etc.
Point, it is possible to microbial growth in suppression cooling water, can significantly improve the using effect of anti-incrustation corrosion inhibitor；Can also effectively stop cooling
Ion in water and other materials corrosiveness to pipeline.Preparation technology of the present invention is simple, mild condition, easily operated, peace
Loopful is protected, and water quality will not be caused secondary pollution, environmentally friendly, especially through the scale inhibitor of sequentially built of the present invention
The good dispersion of agent, do not reunite, shelf-stable, compound and stored the phase afterwards and can reach more than 3 years.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of environment-friendly type anti-incrustation corrosion inhibitor, it is made up of according to the raw material of weight portion following: microcrystalline Cellulose
7 parts, acrylic emulsion 5 parts, Halloysitum Rubrum 23 parts, Polyethylene Glycol 15 parts, tributyl 2-acetylcitrate 3 parts.
The dehydrated alcohol of Polyethylene Glycol with its quality 5 times is mixed, prepares polyglycol solution.By Halloysitum Rubrum pulverizing, mistake
120 mesh sieves, are mixing with polyglycol solution, and are heated to 68 DEG C, stir process 45min at such a temperature, prepare mixture
A.Tributyl 2-acetylcitrate is mixed with microcrystalline Cellulose, after stirring 5min, is adding the anhydrous of microcrystalline Cellulose quality 3 times
Ethanol, then stir process 20min at a temperature of 76 DEG C, prepare mixture B.Mixture A is mixed with mixture B, microwave
Processing 8min, microwave power is 800W, is subsequently adding acrylic emulsion, then supersound process 30min at a temperature of 60 DEG C, ultrasonic
Power is 600W, then stir process 85min at a temperature of 135 DEG C, then at a temperature of 420 DEG C calcine 3h i.e. obtain scale inhibition delay
Erosion agent.
The inhibition of the anti-incrustation corrosion inhibitor obtained in detection the present embodiment and scale-inhibiting properties, its step and result are as follows:
(1) inhibition examination is carried out according to the rotary hanging plate weight-loss method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Test, test temperature 50 DEG C, rotating speed 70r/min.Test piece used is 20# carbon steel test piece, II type standard lacing film, specification be 50mm ×
25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, then through distilled water, washes of absolute alcohol, cold wind
Dry up, be placed in exsiccator more than 24 hours, standby.
(2) static resistance is carried out according to the tosca method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Dirt test, test temperature is 80 ± 1 DEG C, Ca in test water quality2+And HCO3 -(with CaCO3Meter) it is 250mg/L, anti-incrustation corrosion inhibitor
Addition be 5mg/L, after testing 10 hours, the scale inhibition performance recorded is 96.8%, and corrosion inhibition rate is 98.5%.
Embodiment 2
In the embodiment of the present invention, a kind of environment-friendly type anti-incrustation corrosion inhibitor, it is made up of according to the raw material of weight portion following: microcrystalline Cellulose
15 parts, acrylic emulsion 12 parts, Halloysitum Rubrum 31 parts, Polyethylene Glycol 23 parts, tributyl 2-acetylcitrate 8 parts.
The dehydrated alcohol of Polyethylene Glycol with its quality 5 times is mixed, prepares polyglycol solution.By Halloysitum Rubrum pulverizing, mistake
120 mesh sieves, are mixing with polyglycol solution, and are heated to 68 DEG C, stir process 50min at such a temperature, prepare mixture
A.Tributyl 2-acetylcitrate is mixed with microcrystalline Cellulose, after stirring 10min, in the nothing adding microcrystalline Cellulose quality 3 times
Water-ethanol, then stir process 20min at a temperature of 76 DEG C, prepare mixture B.Mixture A is mixed with mixture B, micro-
Ripple processes 8min, and microwave power is 800W, is subsequently adding acrylic emulsion, then supersound process 30min at a temperature of 60 DEG C, super
Acoustical power is 600W, then stir process 85min at a temperature of 135 DEG C, then calcining 3h i.e. obtains scale inhibition at a temperature of 420 DEG C
Corrosion inhibiter.
The inhibition of the anti-incrustation corrosion inhibitor obtained in detection the present embodiment and scale-inhibiting properties, its step and result are as follows:
(1) inhibition examination is carried out according to the rotary hanging plate weight-loss method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Test, test temperature 50 DEG C, rotating speed 70r/min.Test piece used is 20# carbon steel test piece, II type standard lacing film, specification be 50mm ×
25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, then through distilled water, washes of absolute alcohol, cold wind
Dry up, be placed in exsiccator more than 24 hours, standby.
(2) static resistance is carried out according to the tosca method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Dirt test, test temperature is 80 ± 1 DEG C, Ca in test water quality2+And HCO3 -(with CaCO3Meter) it is 250mg/L, anti-incrustation corrosion inhibitor
Addition be 5mg/L, after testing 10 hours, the scale inhibition performance recorded is 97.0%, and corrosion inhibition rate is 98.8%.
Embodiment 3
In the embodiment of the present invention, a kind of environment-friendly type anti-incrustation corrosion inhibitor, it is made up of according to the raw material of weight portion following: microcrystalline Cellulose
9 parts, acrylic emulsion 7 parts, Halloysitum Rubrum 25 parts, Polyethylene Glycol 17 parts, tributyl 2-acetylcitrate 4 parts.
The dehydrated alcohol of Polyethylene Glycol with its quality 5 times is mixed, prepares polyglycol solution.By Halloysitum Rubrum pulverizing, mistake
120 mesh sieves, are mixing with polyglycol solution, and are heated to 68 DEG C, stir process 48min at such a temperature, prepare mixture
A.Tributyl 2-acetylcitrate is mixed with microcrystalline Cellulose, after stirring 8min, is adding the anhydrous of microcrystalline Cellulose quality 3 times
Ethanol, then stir process 20min at a temperature of 76 DEG C, prepare mixture B.Mixture A is mixed with mixture B, microwave
Processing 8min, microwave power is 800W, is subsequently adding acrylic emulsion, then supersound process 30min at a temperature of 60 DEG C, ultrasonic
Power is 600W, then stir process 85min at a temperature of 135 DEG C, then at a temperature of 420 DEG C calcine 3h i.e. obtain scale inhibition delay
Erosion agent.
The inhibition of the anti-incrustation corrosion inhibitor obtained in detection the present embodiment and scale-inhibiting properties, its step and result are as follows:
(1) inhibition examination is carried out according to the rotary hanging plate weight-loss method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Test, test temperature 50 DEG C, rotating speed 70r/min.Test piece used is 20# carbon steel test piece, II type standard lacing film, specification be 50mm ×
25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, then through distilled water, washes of absolute alcohol, cold wind
Dry up, be placed in exsiccator more than 24 hours, standby.
(2) static resistance is carried out according to the tosca method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Dirt test, test temperature is 80 ± 1 DEG C, Ca in test water quality2+And HCO3 -(with CaCO3Meter) it is 250mg/L, anti-incrustation corrosion inhibitor
Addition be 5mg/L, after testing 10 hours, the scale inhibition performance recorded is 97.9%, and corrosion inhibition rate is 98.8%.
Embodiment 4
In the embodiment of the present invention, a kind of environment-friendly type anti-incrustation corrosion inhibitor, it is made up of according to the raw material of weight portion following: microcrystalline Cellulose
13 parts, acrylic emulsion 10 parts, Halloysitum Rubrum 29 parts, Polyethylene Glycol 21 parts, tributyl 2-acetylcitrate 7 parts.
The dehydrated alcohol of Polyethylene Glycol with its quality 5 times is mixed, prepares polyglycol solution.By Halloysitum Rubrum pulverizing, mistake
120 mesh sieves, are mixing with polyglycol solution, and are heated to 68 DEG C, stir process 48min at such a temperature, prepare mixture
A.Tributyl 2-acetylcitrate is mixed with microcrystalline Cellulose, after stirring 8min, is adding the anhydrous of microcrystalline Cellulose quality 3 times
Ethanol, then stir process 20min at a temperature of 76 DEG C, prepare mixture B.Mixture A is mixed with mixture B, microwave
Processing 8min, microwave power is 800W, is subsequently adding acrylic emulsion, then supersound process 30min at a temperature of 60 DEG C, ultrasonic
Power is 600W, then stir process 85min at a temperature of 135 DEG C, then at a temperature of 420 DEG C calcine 3h i.e. obtain scale inhibition delay
Erosion agent.
The inhibition of the anti-incrustation corrosion inhibitor obtained in detection the present embodiment and scale-inhibiting properties, its step and result are as follows:
(1) inhibition examination is carried out according to the rotary hanging plate weight-loss method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Test, test temperature 50 DEG C, rotating speed 70r/min.Test piece used is 20# carbon steel test piece, II type standard lacing film, specification be 50mm ×
25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, then through distilled water, washes of absolute alcohol, cold wind
Dry up, be placed in exsiccator more than 24 hours, standby.
(2) static resistance is carried out according to the tosca method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Dirt test, test temperature is 80 ± 1 DEG C, Ca in test water quality2+And HCO3 -(with CaCO3Meter) it is 250mg/L, anti-incrustation corrosion inhibitor
Addition be 5mg/L, after testing 10 hours, the scale inhibition performance recorded is 98.2%, and corrosion inhibition rate is 99.3%.
Embodiment 5
In the embodiment of the present invention, a kind of environment-friendly type anti-incrustation corrosion inhibitor, it is made up of according to the raw material of weight portion following: microcrystalline Cellulose
11 parts, acrylic emulsion 8 parts, Halloysitum Rubrum 27 parts, Polyethylene Glycol 19 parts, tributyl 2-acetylcitrate 5 parts.
The dehydrated alcohol of Polyethylene Glycol with its quality 5 times is mixed, prepares polyglycol solution.By Halloysitum Rubrum pulverizing, mistake
120 mesh sieves, are mixing with polyglycol solution, and are heated to 68 DEG C, stir process 48min at such a temperature, prepare mixture
A.Tributyl 2-acetylcitrate is mixed with microcrystalline Cellulose, after stirring 8min, is adding the anhydrous of microcrystalline Cellulose quality 3 times
Ethanol, then stir process 20min at a temperature of 76 DEG C, prepare mixture B.Mixture A is mixed with mixture B, microwave
Processing 8min, microwave power is 800W, is subsequently adding acrylic emulsion, then supersound process 30min at a temperature of 60 DEG C, ultrasonic
Power is 600W, then stir process 85min at a temperature of 135 DEG C, then at a temperature of 420 DEG C calcine 3h i.e. obtain scale inhibition delay
Erosion agent.
The inhibition of the anti-incrustation corrosion inhibitor obtained in detection the present embodiment and scale-inhibiting properties, its step and result are as follows:
(1) inhibition examination is carried out according to the rotary hanging plate weight-loss method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Test, test temperature 50 DEG C, rotating speed 70r/min.Test piece used is 20# carbon steel test piece, II type standard lacing film, specification be 50mm ×
25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, then through distilled water, washes of absolute alcohol, cold wind
Dry up, be placed in exsiccator more than 24 hours, standby.
(2) static resistance is carried out according to the tosca method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Dirt test, test temperature is 80 ± 1 DEG C, Ca in test water quality2+And HCO3 -(with CaCO3Meter) it is 250mg/L, anti-incrustation corrosion inhibitor
Addition be 5mg/L, after testing 10 hours, the scale inhibition performance recorded is 98.8%, and corrosion inhibition rate is 99.5%.
Comparative example 1
In addition to not containing Halloysitum Rubrum, its formula and preparation process are consistent with embodiment 5.
Detecting inhibition and the scale-inhibiting properties of the anti-incrustation corrosion inhibitor obtained in this comparative example, its step and result are as follows:
(1) inhibition examination is carried out according to the rotary hanging plate weight-loss method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Test, test temperature 50 DEG C, rotating speed 70r/min.Test piece used is 20# carbon steel test piece, II type standard lacing film, specification be 50mm ×
25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, then through distilled water, washes of absolute alcohol, cold wind
Dry up, be placed in exsiccator more than 24 hours, standby.
(2) static resistance is carried out according to the tosca method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Dirt test, test temperature is 80 ± 1 DEG C, Ca in test water quality2+And HCO3 -(with CaCO3Meter) it is 250mg/L, anti-incrustation corrosion inhibitor
Addition be 5mg/L, after testing 10 hours, the scale inhibition performance recorded is 38.2%, and corrosion inhibition rate is 43.8%.
Comparative example 2
Containing only Polyethylene Glycol, Halloysitum Rubrum, its formula and preparation process are consistent with embodiment 5.
Detecting inhibition and the scale-inhibiting properties of the anti-incrustation corrosion inhibitor obtained in this comparative example, its step and result are as follows:
(1) inhibition examination is carried out according to the rotary hanging plate weight-loss method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Test, test temperature 50 DEG C, rotating speed 70r/min.Test piece used is 20# carbon steel test piece, II type standard lacing film, specification be 50mm ×
25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, then through distilled water, washes of absolute alcohol, cold wind
Dry up, be placed in exsiccator more than 24 hours, standby.
(2) static resistance is carried out according to the tosca method in China Petroleum Chemicals Corporation's " cooling water analysis and test method "
Dirt test, test temperature is 80 ± 1 DEG C, Ca in test water quality2+And HCO3 -(with CaCO3Meter) it is 250mg/L, anti-incrustation corrosion inhibitor
Addition be 5mg/L, after testing 10 hours, the scale inhibition performance recorded is 18.2%, and corrosion inhibition rate is 23.8%.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (5)
1. an environment-friendly type anti-incrustation corrosion inhibitor, it is characterised in that be made up of according to the raw material of weight portion following: microcrystalline Cellulose 7-
15 parts, acrylic emulsion 5-12 part, Halloysitum Rubrum 23-31 part, Polyethylene Glycol 15-23 part, tributyl 2-acetylcitrate 3-8 part.
Environment-friendly type anti-incrustation corrosion inhibitor the most according to claim 1, it is characterised in that by the following raw material group according to weight portion
Become: microcrystalline Cellulose 9-13 part, acrylic emulsion 7-10 part, Halloysitum Rubrum 25-29 part, Polyethylene Glycol 17-21 part, acetyl tributyl citrate
Tributyl 4-7 part.
Environment-friendly type anti-incrustation corrosion inhibitor the most according to claim 1, it is characterised in that by the following raw material group according to weight portion
Become: microcrystalline Cellulose 11 parts, acrylic emulsion 8 parts, Halloysitum Rubrum 27 parts, Polyethylene Glycol 19 parts, tributyl 2-acetylcitrate 5 parts.
4. the preparation method of the environment-friendly type anti-incrustation corrosion inhibitor as described in claim 1-3 is arbitrary, it is characterised in that by following
Step forms:
1) dehydrated alcohol of Polyethylene Glycol with its quality 5 times is mixed, prepare polyglycol solution；
2) Halloysitum Rubrum pulverized, cross 120 mesh sieves, mixing with polyglycol solution, and be heated to 68 DEG C, stirring at such a temperature
Process 45-50min, prepare mixture A；
3) tributyl 2-acetylcitrate is mixed with microcrystalline Cellulose, after stirring 5-10min, adding microcrystalline Cellulose quality 3
Dehydrated alcohol again, then stir process 20min at a temperature of 76 DEG C, prepare mixture B；
4) being mixed with mixture B by mixture A, microwave treatment 8min, microwave power is 800W, is subsequently adding acrylic emulsion,
Supersound process 30min at a temperature of 60 DEG C again, ultrasonic power is 600W, then stir process at a temperature of 135 DEG C
85min, then calcining 3h i.e. obtains anti-incrustation corrosion inhibitor at a temperature of 420 DEG C.
5. the application in circulating water cooling treatment of the anti-incrustation corrosion inhibitor as described in claim 1-3 is arbitrary.
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Application publication date: 20170104 |