CN2266603Y - Anodic protection plate type acid cooler - Google Patents
Anodic protection plate type acid cooler Download PDFInfo
- Publication number
- CN2266603Y CN2266603Y CN 96237330 CN96237330U CN2266603Y CN 2266603 Y CN2266603 Y CN 2266603Y CN 96237330 CN96237330 CN 96237330 CN 96237330 U CN96237330 U CN 96237330U CN 2266603 Y CN2266603 Y CN 2266603Y
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- CN
- China
- Prior art keywords
- acid
- anodic protection
- plate
- cooler
- acid cooler
- Prior art date
- 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.)
- Expired - Fee Related
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The utility model relates to an anodic protection plate type acid cooler, belonging to a concentrated acid cooling device. The structure thereof has the technical proposal that an acid inlet port and an acid outlet port are provided with main cathode, an RS-2 high nickel stainless steel plate slice is formed as anode, concentrated acid is formed as electricity conducting media. Anodic protection is formed by the controlling of a constant potential rectifier. Thus a stable passive film is formed on the plate slice, which causes the corrosion resistance of the plate slice to enhance and the service life of the acid cooler to be more than 8 years. The utility model has the advantages of energy resource saving and environment protecting.
Description
The utility model relates to the concentrated acid cooling apparatus in the chemical industry equipment.
Acid cooler is widely used in concentration at 93-98%, and the vitriol oil process of cooling of temperature≤130 ℃ is one of most important equipment in the gas washing in SA production.At present, board-like acid cooler is because the plate material sheet that adopts is SUS304L, SUS316L etc., these plate material sheets are very narrow to the subject range of acid concentration and sour temperature, the passive film instability that forms on the plate, so the solidity to corrosion of plate is relatively poor, cause the work-ing life of acid cooler extremely low, the general life-span was less than 1 year, can not be accepted by the user, make product lose practical value.Although the principle of anodic protection is widely known by the people, that is: metal is carried out anodizing, make it enter passivation region, thereby reduce metal greatly by concentrated acid corrosive speed.But how anodic protection is applied on the board-like acid cooler still a problem of failing fine solution.
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides that a kind of formation passive film is stable, erosion resistance is strong, the board-like acid cooler of the anodic protection of long service life.
The purpose of this utility model is achieved by the following technical solution: the board-like acid cooler of anodic protection comprises acid inlet on interchanger, the interchanger, go out acid mouthful, water-in and water outlet, plate etc., special feature is that plate adopts the high nickel and stainless steel of RS-2, as anode; Acid inlet, go out acid mouthful inside and outside main cathode and reference electrode are housed, they link with potentiostat respectively.
Utilize the characteristic of concentrated acid conduction, pass to certain electric current for the acid of the acid cooler of flowing through, the plate surface that the high nickel and stainless steel of RS-2 is done is by the concentrated acid passivation, and make by potentiostat that Potential distribution is even everywhere, electric current maintains in the stable passive area plate, thereby the erosion rate of plate is reduced greatly.
Below in conjunction with drawings and Examples the utility model is further elaborated.
Fig. 1 is the utility model structural representation.
With reference to Fig. 1, present embodiment comprises the nickelic stainless steel plate 1 of RS-2, the potentiostat 3 that interchanger 2, cooling concentrated acid are used.Acid inlet 7 by interchanger 2, go out in acid mouthful 8 interchanger 2 and in the concentrated acids two main cathodes 6 are housed; and the nickelic stainless steel plate 1 of RS-2 is as anode; connect with potentiostat 3 by lead, and the concentrated acid between the anode, negative electrode constitutes anodic protection as conducting medium.Keep stable electric current in order to make as the nickelic stainless steel plate 1 of anodic RS-2, dress is controlled reference electrode 5, is gone out acid mouthful 8 places dress monitoring reference electrode 4 at acid inlet 7 places of interchanger 2, measure the comparison of parameter by two electrodes, by potentiostat 3 automatic regulating voltages, electric current, thereby formation is also kept stable passive film, makes the nickelic stainless steel plate 1 of RS-2 slowed down by concentrated acid corrosive speed.In the present embodiment, the composition of the nickelic stainless steel plate 1 of RS-2 is: Ni:24-26; Cr:15-18; Mo:2.5-3.0; C≤0.08; Mn≤1.0; Si≤1.5; S＜0.03; P＜0.03.
In sum, the utlity model has following advantage:
1, anodic protection is applied to board-like acid cooler, has reduced and used expensive resistant material to take Expense;
2, make plate with the high nickel and stainless steel of RS-2, make the passivating film on the plate stable, corrosion-resistant;
3, save in a large number the energy, protected environment;
4, reach work-ing life more than 8 years, social efficiency is remarkable.
Claims (1)
1, the board-like acid cooler of anodic protection comprises acid inlet on interchanger, the interchanger, goes out acid mouthful, water-in and water outlet, plate etc. that it is characterized in that: plate is the high nickel and stainless steel of RS-2, makes anode; Acid inlet, go out acid mouthful inside and outside main cathode and reference electrode are housed, they link with potentiostat respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237330 CN2266603Y (en) | 1996-08-13 | 1996-08-13 | Anodic protection plate type acid cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237330 CN2266603Y (en) | 1996-08-13 | 1996-08-13 | Anodic protection plate type acid cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2266603Y true CN2266603Y (en) | 1997-11-05 |
Family
ID=33912939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96237330 Expired - Fee Related CN2266603Y (en) | 1996-08-13 | 1996-08-13 | Anodic protection plate type acid cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2266603Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949016A (en) * | 2010-11-03 | 2011-01-19 | 南京高源环保工程有限公司 | Anodic protection baffle rod type acid cooler |
| CN102419118A (en) * | 2011-12-15 | 2012-04-18 | 洛阳隆华传热科技股份有限公司 | Anodic protection evaporation type acid cooler |
| CN102519280A (en) * | 2011-12-15 | 2012-06-27 | 洛阳隆华传热科技股份有限公司 | Anode protection plate shell type acid cooler |
-
1996
- 1996-08-13 CN CN 96237330 patent/CN2266603Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949016A (en) * | 2010-11-03 | 2011-01-19 | 南京高源环保工程有限公司 | Anodic protection baffle rod type acid cooler |
| CN102419118A (en) * | 2011-12-15 | 2012-04-18 | 洛阳隆华传热科技股份有限公司 | Anodic protection evaporation type acid cooler |
| CN102519280A (en) * | 2011-12-15 | 2012-06-27 | 洛阳隆华传热科技股份有限公司 | Anode protection plate shell type acid cooler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |