CN108893746A - Method for reducing corrosion of circulating cooling water system - Google Patents
Method for reducing corrosion of circulating cooling water system Download PDFInfo
- Publication number
- CN108893746A CN108893746A CN201810549121.XA CN201810549121A CN108893746A CN 108893746 A CN108893746 A CN 108893746A CN 201810549121 A CN201810549121 A CN 201810549121A CN 108893746 A CN108893746 A CN 108893746A
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- CN
- China
- Prior art keywords
- cooling water
- water system
- circulating cooling
- magnetic field
- corrosion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F15/00—Other methods of preventing corrosion or incrustation
Abstract
The invention discloses a method for reducing corrosion of a circulating cooling water system, belongs to the field of corrosion inhibition of metal materials, and solves the problem of secondary pollution caused by the existing treatment method using chemical agents. The technical scheme of the invention is as follows: and applying a parallel magnetic field on the circulating cooling water pipeline, wherein the magnetic induction intensity of the magnetic field is 0.05-1T, and operating the circulating cooling water system under the condition. The invention has the beneficial effects that: by applying the parallel magnetic field on the circulating cooling water pipeline, the hydration of ions is promoted, so that the dissolution of iron is inhibited, the corrosion resistance efficiency can be effectively improved, the production cost is reduced, and the secondary pollution can not be caused.
Description
Technical field
The invention belongs to metallic material corrosions to inhibit field, and in particular to a kind of side for reducing recirculating cooling water system corrosion
Method.
Background technique
The maximum recirculating cooling water system of industrial water consumption, quantity of circulating water account for 60% or more of industrial water in factory.But it follows
Ring cooling water system would generally generate the problems such as corrosion and scaling, bacteria breed in the process of running, influence the normal fortune of system
Row.The existing processing method using chemical agent can bring secondary pollution.
Summary of the invention
The object of the present invention is to provide a kind of methods of reduction recirculating cooling water system corrosion, to solve existing useization
The problem of secondary pollution can be brought by learning the processing method of medicament.
The technical scheme is that：A method of recirculating cooling water system corrosion being reduced, in recirculated cooling water pipeline
The magnetic induction intensity of upper application parallel magnetic field, magnetic field is 0.05~1T, runs recirculating cooling water system with this condition.
As a further improvement of the present invention, the flow velocity of recirculated cooling water is no more than 0.2m/s, and excessive flow velocity can subtract
Weak etch-proof effect.
As a further improvement of the present invention, the temperature of recirculated cooling water is 25~35 DEG C, too high or too low for temperature all
Weaken etch-proof effect.
Preferably, the magnetic induction intensity in magnetic field is 0.55T.
Preferably, the flow velocity of recirculated cooling water is 0.2m/s.
Preferably, the temperature of recirculated cooling water is 30 DEG C.
As a further improvement of the present invention, recirculated cooling water pipeline is the circulating cooling of metallic iron or ferroalloy material
Waterpipe.
Starting point of the invention is as follows：Lorentz force makes the Fe on interface2+The power at desorption interface is generated, and to anion
Aquation does not influence, on the one hand due to Fe2+It is ferromagnetic ion, Lorentz force will lead to aquation decline, accelerate Fe
Course of dissolution；On the other hand due to Fe and Fe2The difference of magnetic moment and make Fe2+It generates and is adsorbed in the power at interface, inhibit that Fe's is molten
Solution preocess.Lorentz force slows down or accelerates the rate of dissolved ferric iron to depend on the result that two kinds of power competes.Technical staff passes through
Research has obtained the suitable magnetic induction intensity that Fe can be inhibited to dissolve.
The beneficial effects of the invention are as follows：By applying parallel magnetic field in recirculated cooling water pipeline, the water of ion is improved
Cooperation is used, to inhibit the dissolution of iron, can be effectively improved preservative efficiency, be reduced production cost, and not will cause secondary pollution.
Detailed description of the invention
Fig. 1 is the chemical shift figure of hydrone in the embodiment of the present invention 1；
Fig. 2 is the electron microscope scanning figure of recirculated cooling water pipeline in the embodiment of the present invention 1；
Fig. 3 is the chemical shift figure of hydrone in the embodiment of the present invention 2；
Fig. 4 is the chemical shift figure of 3 hydrone of the embodiment of the present invention；
Fig. 5 is the electron microscope scanning figure of recirculated cooling water pipeline in the embodiment of the present invention 3；
Fig. 6 is the chemical shift figure of hydrone in comparative example of the present invention；
Fig. 7 is the electron microscope scanning figure of recirculated cooling water pipeline in comparative example of the present invention.
Specific embodiment
The following examples and comparative example can further illustrate the present invention, but do not limit the invention in any way.
Embodiment 1,
Apply the magnetic field that magnetic induction intensity is 0.55T, the flow velocity for adjusting recirculated cooling water is 0.2m/s, and temperature is always held at 30
DEG C, circulating cooling water sample is taken after 30h, by the half-peak breadth of Nuclear Magnetic Resonance Measurement recirculated cooling water, is calculated compared with raw water
The variation of hydrogen bond quantity, calculation formula is as follows：
Wherein：ΔC/C 0 It is the relative variation of Free water（%）, can also be used to characterization hydrogen bond quantity variation.IfΔC/C 0 For
Positive value then illustrates that hydrogen bond quantity is reduced, and as a result hydration of ion decline causes the dissolution of Fe to be accelerated, on the contrary then opposite；
CIt is the ratio of free water molecule in circulating cooling water sample；
C 0 It is the ratio of the free water molecule of ultrapure water；
v 0 1/2 It is the half-peak breadth height of ultrapure water；
v 1/2 It is the half-peak breadth height of circulating cooling water sample.
It is computed, hydrogen bond increases 21% in the present embodiment, and the chemical shift of hydrone is 4.6999ppm, as shown in Figure 1.
This shows that hydration of ion is reinforced, and the dissolution of Fe slows down.
One section of recirculated cooling water pipeline electron microscope scanning its corrosion condition is taken, as shown in Fig. 2, having reached pre-
The anticorrosion ability of phase.
Embodiment 2：
Apply the magnetic field that magnetic induction intensity is 0.05T, the flow velocity for adjusting recirculated cooling water is 0.1m/s, and temperature is always held at 25
DEG C, circulating cooling water sample is taken after 30h.Pass through the half-peak breadth of Nuclear Magnetic Resonance Measurement recirculated cooling water, compared with raw water, hydrogen bond
5% is increased, the chemical shift of hydrone is 4.6984ppm, as shown in Figure 3.This shows that hydration of ion is reinforced, Fe
Dissolution slowed down, effect not as good as embodiment 1 effect it is good.
Embodiment 3：
Applying the magnetic field that magnetic induction intensity is 1T, the flow velocity for adjusting recirculated cooling water is 0.2m/s, and temperature is always held at 35 DEG C,
Circulating cooling water sample is taken after 30h, by the half-peak breadth of Nuclear Magnetic Resonance Measurement recirculated cooling water, compared with raw water, hydrogen bond increases
Add 8%, the chemical shift of hydrone is 4.6988ppm, as shown in Figure 4.This shows that hydration of ion is reinforced, Fe's
Dissolution is slowed down, and effect is good not as good as the effect of embodiment 1.
One section of recirculated cooling water pipeline electron microscope scanning its corrosion condition is taken, as shown in figure 5, anti-corrosion effect
It is not ideal enough.
Comparative example：
Do not apply magnetic field, the flow velocity for adjusting recirculated cooling water is 0.2m/s, and temperature is always held at 30 DEG C, takes circulation cold after 30h
But water sample.By the half-peak breadth of Nuclear Magnetic Resonance Measurement recirculated cooling water, compared with raw water, hydrogen bond reduces 8%, hydrone
Chemical shift be 4.6985ppm, as shown in Figure 6.This shows that hydration of ion weakens, and the dissolution of Fe is accelerated.
One section of recirculated cooling water pipeline electron microscope scanning its corrosion condition is taken, as shown in fig. 7, circulating cooling
Waterpipe seriously corroded.
By comparison as can be seen that magnetic induction intensity is best for the magnetic field anti-corrosion effect of 0.55T.
Claims (7)
1. a kind of method for reducing recirculating cooling water system corrosion, it is characterised in that：Apply in recirculated cooling water pipeline parallel
The magnetic induction intensity in magnetic field, the magnetic field is 0.05~1T, runs recirculating cooling water system with this condition.
2. a kind of method for reducing recirculating cooling water system corrosion according to claim 1, it is characterised in that：Circulating cooling
The flow velocity of water is no more than 0.2m/s.
3. a kind of method for reducing recirculating cooling water system corrosion according to claim 1 or 2, it is characterised in that：Circulation
The temperature of cooling water is 25~35 DEG C.
4. a kind of method for reducing recirculating cooling water system corrosion according to claim 3, it is characterised in that：The magnetic field
Magnetic induction intensity be 0.55T.
5. a kind of method for reducing recirculating cooling water system corrosion according to claim 4, it is characterised in that：Circulating cooling
The flow velocity of water is 0.2m/s.
6. a kind of method for reducing recirculating cooling water system corrosion according to claim 5, it is characterised in that：Circulating cooling
The temperature of water is 30 DEG C.
7. a kind of method for reducing recirculating cooling water system corrosion according to claim 6, it is characterised in that：The circulation
Cooling water pipeline is the recirculated cooling water pipeline of metallic iron or ferroalloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549121.XA CN108893746A (en) | 2018-05-31 | 2018-05-31 | Method for reducing corrosion of circulating cooling water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549121.XA CN108893746A (en) | 2018-05-31 | 2018-05-31 | Method for reducing corrosion of circulating cooling water system |
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| CN108893746A true CN108893746A (en) | 2018-11-27 |
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| CN201810549121.XA Pending CN108893746A (en) | 2018-05-31 | 2018-05-31 | Method for reducing corrosion of circulating cooling water system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62103382A (en) * | 1985-10-29 | 1987-05-13 | Hokutou Denki Kogyo Kk | Electron cyclon type corrosion and scaling preventive method |
| GB2209030A (en) * | 1987-06-20 | 1989-04-26 | Garth Stocking Enterprises Lim | Apparatus for eliminating scale and corrosion in water systems |
| US5037546A (en) * | 1990-06-05 | 1991-08-06 | Enecon Corporation | Permanent magnetic power cell circuit for treating fluids to control mineral scale and scale-induced corrosion in pipes and fluid flow systems |
| JP2005272891A (en) * | 2004-03-23 | 2005-10-06 | Kobe Steel Ltd | Corrosion prevention method for water piping made of copper |
| JP2005270728A (en) * | 2004-03-23 | 2005-10-06 | Heisei Riken Kk | Magnetic anti-corrosion method of service water |
| RU2347012C2 (en) * | 2006-11-01 | 2009-02-20 | Сергей Иванович Бойко | Method of anticorrosion protection of metal pipelines from interior corrosion |
| CN101955248A (en) * | 2010-10-25 | 2011-01-26 | 苏州高新区禾云设备设计事务所 | Cooling water magnetizing processor |
| RU2547067C2 (en) * | 2013-07-16 | 2015-04-10 | Нух Махмудович Якупов | Device for corrosion prevention |
| CN108017166A (en) * | 2017-11-27 | 2018-05-11 | 西北矿冶研究院 | Scale removing device and method for circulating cooling water system |
-
2018
- 2018-05-31 CN CN201810549121.XA patent/CN108893746A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62103382A (en) * | 1985-10-29 | 1987-05-13 | Hokutou Denki Kogyo Kk | Electron cyclon type corrosion and scaling preventive method |
| GB2209030A (en) * | 1987-06-20 | 1989-04-26 | Garth Stocking Enterprises Lim | Apparatus for eliminating scale and corrosion in water systems |
| US5037546A (en) * | 1990-06-05 | 1991-08-06 | Enecon Corporation | Permanent magnetic power cell circuit for treating fluids to control mineral scale and scale-induced corrosion in pipes and fluid flow systems |
| JP2005272891A (en) * | 2004-03-23 | 2005-10-06 | Kobe Steel Ltd | Corrosion prevention method for water piping made of copper |
| JP2005270728A (en) * | 2004-03-23 | 2005-10-06 | Heisei Riken Kk | Magnetic anti-corrosion method of service water |
| RU2347012C2 (en) * | 2006-11-01 | 2009-02-20 | Сергей Иванович Бойко | Method of anticorrosion protection of metal pipelines from interior corrosion |
| CN101955248A (en) * | 2010-10-25 | 2011-01-26 | 苏州高新区禾云设备设计事务所 | Cooling water magnetizing processor |
| RU2547067C2 (en) * | 2013-07-16 | 2015-04-10 | Нух Махмудович Якупов | Device for corrosion prevention |
| CN108017166A (en) * | 2017-11-27 | 2018-05-11 | 西北矿冶研究院 | Scale removing device and method for circulating cooling water system |
Non-Patent Citations (2)
| Title |
|---|
| 聂梅生等: "《水工业工程设计手册 建筑和小区给水排水》", 31 December 2000, 中国建筑工业出版社 * |
| 陆柱等: "《水处理技术（第二版）》", 31 August 2006, 华东理工大学出版社 * |
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Application publication date: 20181127 |