CN104773844B - Corrosion inhibitor for air-tight circulating cooling water system as well as preparation method and application thereof - Google Patents
Corrosion inhibitor for air-tight circulating cooling water system as well as preparation method and application thereof Download PDFInfo
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- CN104773844B CN104773844B CN201510200956.0A CN201510200956A CN104773844B CN 104773844 B CN104773844 B CN 104773844B CN 201510200956 A CN201510200956 A CN 201510200956A CN 104773844 B CN104773844 B CN 104773844B
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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
- C02F5/105—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 combined with inorganic substances
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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
- C02F5/12—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 containing nitrogen
- C02F5/125—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 containing nitrogen combined with inorganic substances
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
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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
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
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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
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a corrosion inhibitor for an air-tight circulating cooling water system as well as a preparation method and application thereof. On the basis of 100% of total weight of the corrosion inhibitor, the corrosion inhibitor is prepared from the following raw materials in percentage by weight: 10wt%-25wt% of alkali metal silicate, 12wt%-18wt% of alkali metal molybdate, 5wt%-8wt% of alkali metal citrate, 1wt%-2wt% of benzotriazole, 3wt%-5wt% of alkali metal polyepoxysuccinic acid salt and the balance of desalted water. The invention further provides a preparation method and application of the corrosion inhibitor. The corrosion inhibitor can form a protective film on the surface of air-tight cooling water equipment; the protective film is capable of effectively preventing migration of corrosive ions, so as to play roles in protecting metal surface and retarding corrosion; and the corrosion inhibitor is good in retarding effect, does not contain phosphorus-containing components such as organic phosphorus and inorganic phosphorus, does not contain nitrogen-containing components such as nitrite, is harmless to environment, and is an environment-friendly corrosion inhibitor for the air-tight circulating cooling water system.
Description
Technical field
The present invention relates to a kind of inclosed recirculated cooling water system corrosion inhibiter and preparation method and application, be related to corrosion with
Protection technology field.
Background technology
At present, the corrosion inhibitor formula that the sealing and circulating water system of domestic iron and steel enterprises adopts mostly is and contains nitrite, phosphoric acid
Nitrogenous, the phosphorous formula such as salt, chromate-containing formula.These corrosion inhibitor formulas are used recirculated water, the sewer of rear generation
Entering water body can cause water body total nitrogen, total phosphorus content to raise and heavy metal pollution.Wherein, the discharge of nitrite not only can cause
The rising of water body total nitrogen content, and nitrite is a kind of carcinogen；Phosphatic discharge can cause body eutrophication,
Cause the amount reproduction of bacterium algae；The discharge of chromate can lead to aquatile to be poisoned, and can be in the environment through accumulation, richness
Collect, convert and cause " three causes " effect.There is harm to environment in these materials due to applying above-mentioned corrosion inhibitor formula to produce, because
This, the constituent in the corrosion inhibitor formula that current inclosed recirculated cooling water system adopts and its discharge all receive strict
Limit, it is therefore necessary to developing a kind of new environmental protection corrosion inhibiter and the corrosion inhibition method applying this corrosion inhibiter.
Content of the invention
It is an object of the invention to provide a kind of inclosed recirculated cooling water system corrosion inhibiter.
The present invention also aims to providing the preparation method of above-mentioned inclosed recirculated cooling water system corrosion inhibiter.
The present invention also aims to providing above-mentioned inclosed recirculated cooling water system corrosion inhibiter in inclosed recirculated cooling water
Application in system.
For reaching above-mentioned purpose, the invention provides a kind of inclosed recirculated cooling water system corrosion inhibiter, with this corrosion inhibiter
Gross weight is 100% meter, and described corrosion inhibiter comprises the alkali metal molybdic acid of the alkali silicate of 10-25wt%, 12-18wt%
Salt, the alkali-metal citrate of 5-8wt%, the alkali metal benzotriazole of 1-2wt%, the alkali metal polysilicate epoxy amber of 3-5wt%
Amber hydrochlorate, balance of desalted water.
According to corrosion inhibiter of the present invention it is preferable that the conventional desalination water that uses for this area of described desalted water, it contains
Salt amount is 1-5mg/l.
According to corrosion inhibiter of the present invention it is preferable that the alkali metal in described alkali silicate includes sodium or potassium.
According to corrosion inhibiter of the present invention it is preferable that described alkali silicate includes metasilicate pentahydrate sodium or five water
Potassium metasilicate.
According to corrosion inhibiter of the present invention, above-mentioned alkali silicate includes alkali metal orthosilicate and the inclined silicon of alkali metal
Hydrochlorate, alkali silicate is preferably alkali metal silicate.
According to corrosion inhibiter of the present invention it is preferable that described alkali metal molybdate includes sodium molybdate or potassium molybdate.
According to corrosion inhibiter of the present invention it is preferable that described alkali-metal citrate includes sodium citrate or citric acid
Potassium.
According to corrosion inhibiter of the present invention it is preferable that described alkali metal polysilicate epoxy succinate includes poly- epoxy succinic
Sour sodium or poly-epoxy succinic acid potassium.
According to inclosed recirculated cooling water system corrosion inhibiter of the present invention, metasilicate pentahydrate sodium is that a kind of Anodic Type delays
Erosion agent, it can form one layer of precipitation membrane in metal surface, and this precipitation membrane can suppress the electrochemical reaction of anode, slow down metal
Corrosion；
Sodium molybdate is also a kind of anodic corrosion inhibitor, and the molybdate that sodium molybdate ionizes out is a kind of weak oxidant, Neng Gouyu
There is passivation reaction in parent metal, form one layer of passivating film, this passivating film can be used as the precipitation membrane being formed by metasilicate pentahydrate sodium
Useful supplement, formed synergism, slow down corrosion of metal further；
Sodium citrate is a kind of organic inhibitor of multi-hydroxy carboxy acid, antisludging agent, its can with many corrosion inhibiter cooperation and
Present cooperative effect, improve the corrosion mitigating effect of corrosion inhibiter；
Benzotriazole is a kind of copper inhibitor, and it can prevent blast furnace cooling stave, air port for sealing and circulating water system
The copper heat transmission equipment such as little set, continuous cast mold corrodes；
Polyepoxy sodium succinate is a kind of phosphorus-free green antisludging agent, can prevent cooling device surface under hot conditionss from producing
Fouling.
Present invention also offers the preparation method of above-mentioned inclosed recirculated cooling water system corrosion inhibiter, it includes following step
Rapid:
A, benzotriazole is dissolved in partially desalted water, obtains the aqueous solution of benzotriazole；
B, under stirring, alkali silicate is dissolved in remaining desalted water, add alkali metal molybdate, alkali gold
Belong to citrate, alkali metal polysilicate epoxy succinate, add the aqueous solution of the benzotriazole that above-mentioned steps a obtain, continue
Stirring 30-120min, obtains described inclosed recirculated cooling water system corrosion inhibiter.
According to preparation method of the present invention it is preferable that in step a, the matter of described benzotriazole and desalted water
Amount ratio is 1:10-1:20.
According to preparation method of the present invention, in above-mentioned steps a, those skilled in the art can make according to scene
The needs of industry, the mass ratio of described benzotriazole and desalted water is defined as 1:10；
In above-mentioned steps b, stir as ordinary skill in the art means, the purpose of stirring be make alkali silicate,
Alkali metal molybdate, alkali-metal citrate, the dissolving of alkali metal polysilicate epoxy succinate are more abundant, prevent the generation precipitating,
After the aqueous solution of benzotriazole adding step a to obtain, those skilled in the art can according to the needs of field operation,
Continue stirring 30min.
According to preparation method of the present invention, above-mentioned steps a, step b are all carried out at room temperature.
" remaining desalination according to preparation method of the present invention, in " the partially desalted water " in step a and step b
The total amount of water " as constitutes the total content of the desalted water of inclosed recirculated cooling water system corrosion inhibiter of the present invention.
According to the preparation method of inclosed recirculated cooling water system corrosion inhibiter of the present invention, in stepb, first will
Alkali silicate is dissolved in desalted water, then adds alkali metal molybdate, alkali metal lemon in the aqueous solution of alkali silicate
Lemon hydrochlorate, alkali metal polysilicate epoxy succinate, wherein, to alkali metal molybdate, alkali-metal citrate, alkali metal polysilicate epoxy amber
The addition sequence of amber hydrochlorate is not required.
Present invention also offers above-mentioned inclosed recirculated cooling water system corrosion inhibiter is in inclosed recirculated cooling water system
Application.
The corrosion inhibiter of the present invention is particularly suited for the inclosed recirculated cooling water system of the equipment such as steel mill's blast furnace, continuous casting, for
One large blast furnace, can reduce total nitrogen discharge capacity 5-10 ton, total phosphorus emission 0.2-0.5 ton every year.
The corrosion inhibiter of the present invention can form layer protecting film on airtight cooling water equipment surface, and this protecting film can effectively stop
The migration of corrosive ion, thus play the effect protected metal surface, slow down corrosion.This corrosion inhibiter corrosion mitigating effect is good, and
And without the phosphorus containing components such as organophosphors, Phos, without the nitrogen containing component such as nitrite, also will not be to environmental emission heavy metal etc.
Pollutant, environmental sound, is a kind of environmentally friendly inclosed recirculated cooling water system corrosion inhibiter.
Brief description
Fig. 1 is by carrying out, to the corrosion inhibiter of the present invention, the installation drawing that dynamic analog test is used.
Main Reference label declaration:
1 supplements water pot 2 expansion drum, 3 coil heat exchanger 4 water storage tank
5 water circulating pump, 6 effusion meter, 7 temperature element 8 connecting joint
9 condensing tube, 10 electrical heating elements, 11 heat-transfer equipment 12 developmental tube.
Specific embodiment
Describe the implementation process of the present invention and the beneficial effect of generation below by way of specific embodiment in detail it is intended to help read
Reader more fully understands essence and the feature of the present invention, not as to this case can practical range restriction.
Embodiment 1
Present embodiments provide a kind of inclosed recirculated cooling water system corrosion inhibiter, the gross weight with this corrosion inhibiter is
100% meter, described corrosion inhibiter comprise the metasilicate pentahydrate sodium of 20wt%, the sodium molybdate of 12wt%, the sodium citrate of 7wt%,
The benzotriazole of 2wt%, the polyepoxy sodium succinate of 5wt%, desalted water between 1-5mg/l for the balance of salinity；
The preparation method of above-mentioned inclosed recirculated cooling water system corrosion inhibiter comprises the following steps:
Under a, room temperature, benzotriazole is dissolved in desalted water, described benzotriazole with the mass ratio of desalted water is
1:10, obtains the aqueous solution of benzotriazole；
B, under room temperature, stirring, metasilicate pentahydrate sodium is dissolved in desalted water, adds sodium molybdate, sodium citrate, poly-
Epoxy sodium succinate, adds the aqueous solution of the benzotriazole that above-mentioned steps a obtain, and continues stirring 30min, obtains described
Inclosed recirculated cooling water system corrosion inhibiter.
Embodiment 2
Present embodiments provide the application in blast furnace inclosed recirculated cooling water system of the corrosion inhibiter of above-described embodiment 1, its
Comprise the following steps:
The corrosion inhibiter that embodiment 1 is prepared is applied to 3200m3Blast furnace inclosed recirculated cooling water system, according to this
The water quality water distribution of system is simulated test, and the schematic device used by this test is as shown in Figure 1: as seen from Figure 1, this dress
Put including supplementary water pot 1, expansion drum 2, coil heat exchanger 3, water storage tank 4, water circulating pump 5, effusion meter 6, temperature element 7, connection
Joint 8, condensing tube 9, electrical heating elements 10, heat-transfer equipment 11, developmental tube 12；This developmental tube 12 includes carbon steel monitoring test tube and copper
Monitoring test tube；
600mg/l (the effective body with water storage tank 4 is added into the water storage tank 4 of assay device according to the volume of actual measurement water tank
Long-pending calculate) corrosion inhibiter for preparing of embodiment 1, add in another set of assay device simultaneously equivalent commercially available containing sodium nitrite
Corrosion inhibiter to carry out contrast test, the commercially available solid content containing sodium nitrite corrosion inhibiter is 45%, uses with the present embodiment
The solid content of the corrosion inhibiter that embodiment 1 prepares quite, this test inflow temperature be 50 DEG C, leaving water temperature be 60 DEG C at enter
Row 15 days, invisible spectro flow velocity is 1m/s, after off-test, the rate of corrosion of monitoring test pipe 12.
Test result indicate that: using the carbon of the blast furnace inclosed recirculated cooling water system of the commercially available corrosion inhibiter containing sodium nitrite
The corrosion rate that test tube monitored by steel is 0.027mm/a, and the corrosion rate that copper monitors test tube is 0.003mm/a, using the present invention's
After corrosion inhibiter, the corrosion rate that test tube monitored by carbon steel is reduced to 0.012mm/a, compared to the commercially available inhibition containing sodium nitrite
Agent, the corrosion rate that test tube monitored by its carbon steel reduces 55%, and the corrosion rate that copper monitors test tube is reduced to 0.001mm/a, phase
In the commercially available corrosion inhibiter containing sodium nitrite, the corrosion rate that its copper monitors test tube reduces 67% to ratio.It can be seen that, by the present invention's
Corrosion inhibiter is applied to blast furnace inclosed recirculated cooling water system, and corrosion mitigating effect has obtained obvious improvement, can extend blast furnace further
The service life of copper cooling wall and the equipment such as tuyere small sleeve replacement cycle.For a 3200m3Blast furnace, using this
The inclosed recirculated cooling water system corrosion inhibiter of invention, the discharge capacity of nitrite can reduce about 10 tons every year.
Embodiment 3
Present embodiments provide a kind of inclosed recirculated cooling water system corrosion inhibiter, the gross weight with this corrosion inhibiter is
100% meter, described corrosion inhibiter comprise the metasilicate pentahydrate sodium of 18wt%, the sodium molybdate of 15wt%, the sodium citrate of 7wt%,
The benzotriazole of 1.5wt%, the polyepoxy sodium succinate of 5wt%, desalted water between 1-5mg/l for the balance of salinity；
The preparation method of above-mentioned inclosed recirculated cooling water system corrosion inhibiter comprises the following steps:
Under a, room temperature, benzotriazole is dissolved in desalted water, described benzotriazole with the mass ratio of desalted water is
1:10, obtains the aqueous solution of benzotriazole；
B, under room temperature, stirring, metasilicate pentahydrate sodium is dissolved in desalted water, adds sodium molybdate, sodium citrate, poly-
Epoxy sodium succinate, adds the aqueous solution of the benzotriazole obtaining in above-mentioned steps a, continues stirring 30min, obtains described
Inclosed recirculated cooling water system corrosion inhibiter.
Embodiment 4
Present embodiments provide the corrosion inhibiter that above-described embodiment 3 prepares in continuous cast mold inclosed recirculated cooling water system
Application in system, it comprises the following steps:
The corrosion inhibiter that embodiment 3 is prepared is applied to continuous cast mold inclosed recirculated cooling water system, according to this is
The water quality water distribution of system is simulated test, and the schematic device used by this test is as shown in Figure 1: as seen from Figure 1, this device
Including supplementary water pot 1, expansion drum 2, coil heat exchanger 3, water storage tank 4, water circulating pump 5, effusion meter 6, temperature element 7, connect
8, condensing tube 9, electrical heating elements 10, heat-transfer equipment 11, developmental tube 12；Developmental tube 12 includes carbon steel monitoring test tube and copper monitoring
Test tube；
600mg/l (the effective volume with water storage tank 4 is added into the water storage tank 4 of assay device according to actual measurement water tank capacity
Calculate) the corrosion inhibiter for preparing of embodiment 3, meanwhile, add in another set of assay device equivalent commercially available containing nitrous
To carry out contrast test, the solid content of the commercially available corrosion inhibiter containing sodium nitrite is 45% to the corrosion inhibiter of sour sodium, with the present embodiment
The solid content of corrosion inhibiter that the embodiment 3 using prepares quite, this test inflow temperature be 50 DEG C, leaving water temperature be 60
Carry out at DEG C 15 days, invisible spectro flow velocity is 1m/s, after off-test, the rate of corrosion of monitoring test pipe 12.
Test result indicate that: using the continuous cast mold inclosed recirculated cooling water system of the commercially available corrosion inhibiter containing sodium nitrite
The corrosion rate that test tube monitored by the carbon steel of system is 0.033mm/a, and the corrosion rate that copper monitors test tube is 0.003mm/a, using this
After the corrosion inhibiter of invention, the corrosion rate that test tube monitored by carbon steel is reduced to 0.01mm/a, compared to the corrosion inhibiter containing sodium nitrite,
The corrosion rate that test tube monitored by its carbon steel reduces 70%, and the corrosion rate that copper monitors test tube is reduced to 0.001mm/a, compared to
Corrosion inhibiter containing sodium nitrite, the corrosion rate that its copper monitors test tube reduces 67%.It can be seen that, by the corrosion inhibiter application of the present invention
In continuous cast mold inclosed recirculated cooling water system, corrosion mitigating effect has obtained obvious improvement, can extend continuous casting crystallining further
The service life of device.
Embodiment 5
Present embodiments provide a kind of inclosed recirculated cooling water system corrosion inhibiter, the gross weight with this corrosion inhibiter is
100% meter, described corrosion inhibiter comprise the metasilicate pentahydrate sodium of 12wt%, the sodium molybdate of 18wt%, the sodium citrate of 6wt%,
The benzotriazole of 2wt%, the polyepoxy sodium succinate of 3wt%, desalted water between 1-5mg/l for the balance of salinity；
The preparation method of above-mentioned inclosed recirculated cooling water system corrosion inhibiter comprises the following steps:
Under a, room temperature, benzotriazole is dissolved in desalted water, described benzotriazole with the mass ratio of desalted water is
1:10, obtains the aqueous solution of benzotriazole；
B, under room temperature, stirring, metasilicate pentahydrate sodium is dissolved in desalted water, adds sodium molybdate, sodium citrate, poly-
Epoxy sodium succinate, adds the aqueous solution of the benzotriazole that above-mentioned steps a obtain, and continues stirring 30min, obtains described
Inclosed recirculated cooling water system corrosion inhibiter.
Embodiment 6
Present embodiments provide the corrosion inhibiter that above-described embodiment 5 prepares in furnace equipment inclosed recirculated cooling water system
In application, it comprises the following steps:
The corrosion inhibiter that embodiment 5 is prepared is applied to furnace equipment inclosed recirculated cooling water system, according to this system
Water quality water distribution be simulated test, the schematic device used by this test is as shown in Figure 1: as seen from Figure 1, this device bag
Include supplementary water pot 1, expansion drum 2, coil heat exchanger 3, water storage tank 4, water circulating pump 5, effusion meter 6, temperature element 7, connecting joint
8th, condensing tube 9, electrical heating elements 10, heat-transfer equipment 11, developmental tube 12；Developmental tube 12 includes carbon steel monitoring test tube and copper monitoring examination
Pipe；
600mg/l is added (with having of water storage tank 4 into the water storage tank 4 of assay device according to the volume of actual measurement glass container
Effect volume calculates) corrosion inhibiter for preparing of embodiment 5, add in another set of assay device simultaneously equivalent commercially available containing nitrous
To carry out contrast test, the commercially available solid content containing sodium nitrite corrosion inhibiter is 42% to the corrosion inhibiter of sour sodium, makes with the present embodiment
The solid content of the corrosion inhibiter that embodiment 5 prepares quite, this test inflow temperature be 50 DEG C, leaving water temperature be 60 DEG C
Under carry out 15 days, invisible spectro flow velocity be 1m/s, after off-test, detection developmental tube 12 rate of corrosion.
Test result indicate that: using the furnace equipment inclosed recirculated cooling water system of the commercially available corrosion inhibiter containing sodium nitrite
Carbon steel monitor test tube corrosion rate be 0.041mm/a, copper monitor test tube corrosion rate be 0.003mm/a, using this
After bright corrosion inhibiter, the corrosion rate that test tube monitored by carbon steel is reduced to 0.015mm/a, compared to the corrosion inhibiter containing sodium nitrite,
The corrosion rate that test tube monitored by its carbon steel reduces 63%, and the corrosion rate that copper monitors test tube is reduced to 0.001mm/a, compared to
Corrosion inhibiter containing sodium nitrite, the corrosion rate that its copper monitors test tube reduces 67%.It can be seen that, by the corrosion inhibiter application of the present invention
In furnace equipment inclosed recirculated cooling water system, corrosion mitigating effect has obtained obvious improvement, can extend furnace equipment further
Service life.
Claims (10)
1. a kind of inclosed recirculated cooling water system corrosion inhibiter, wherein, is counted with the gross weight of this corrosion inhibiter for 100%, described slow
Erosion agent comprises the alkali metal citric acid of the alkali silicate of 10-25wt%, the alkali metal molybdate of 12-18wt%, 5-8wt%
Salt, 1-2wt% benzotriazole, the alkali metal polysilicate epoxy succinate of 3-5wt%, balance of desalted water.
2. corrosion inhibiter according to claim 1, wherein, the salinity of described desalted water is 1-5mg/l.
3. corrosion inhibiter according to claim 1, wherein, the alkali metal in described alkali silicate includes sodium or potassium.
4. corrosion inhibiter according to claim 3, wherein, described alkali silicate includes metasilicate pentahydrate sodium or five water are inclined
Potassium silicate.
5. corrosion inhibiter according to claim 1, wherein, described alkali metal molybdate includes sodium molybdate or potassium molybdate.
6. corrosion inhibiter according to claim 1, wherein, described alkali-metal citrate includes sodium citrate or citric acid
Potassium.
7. corrosion inhibiter according to claim 1, wherein, described alkali metal polysilicate epoxy succinate includes poly-epoxy succinic acid
Sodium or poly-epoxy succinic acid potassium.
8. the preparation method of the inclosed recirculated cooling water system corrosion inhibiter described in any one of claim 1-7, it includes following
Step:
A, benzotriazole is dissolved in partially desalted water, obtains the aqueous solution of benzotriazole；
B, under stirring, alkali silicate is dissolved in remaining desalted water, add alkali metal molybdate, alkali metal lemon
Lemon hydrochlorate, alkali metal polysilicate epoxy succinate, add the aqueous solution of the benzotriazole that step a obtains, and continue stirring 30-
120min, obtains described inclosed recirculated cooling water system corrosion inhibiter.
9. preparation method according to claim 8, wherein, in step a, the quality of described benzotriazole and desalted water
Than for 1:10-1:20.
10. the inclosed recirculated cooling water system corrosion inhibiter described in any one of claim 1-7 is in inclosed recirculated cooling water system
In application.
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| CN102730868A (en) * | 2011-04-02 | 2012-10-17 | 中国石油化工股份有限公司 | Treatment method of circulating water with leaking oil |
| CN103864232A (en) * | 2014-03-11 | 2014-06-18 | 北京绿色快车国际橡塑制品有限公司 | General corrosion and scale inhibitor for purifying circulating water and preparation and application thereof |
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