JPS57196721A - Preventing method for corrosion of heat exchanger for heating aqueous salt solution - Google Patents
Preventing method for corrosion of heat exchanger for heating aqueous salt solutionInfo
- Publication number
- JPS57196721A JPS57196721A JP8048081A JP8048081A JPS57196721A JP S57196721 A JPS57196721 A JP S57196721A JP 8048081 A JP8048081 A JP 8048081A JP 8048081 A JP8048081 A JP 8048081A JP S57196721 A JPS57196721 A JP S57196721A
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- reducing agent
- heat exchanger
- soln
- salt solution
- 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.)
- Pending
Links
- 238000005260 corrosion Methods 0.000 title abstract 5
- 230000007797 corrosion Effects 0.000 title abstract 5
- 238000010438 heat treatment Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 239000012266 salt solution Substances 0.000 title 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 2
- 239000011780 sodium chloride Substances 0.000 abstract 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract 2
Abstract
PURPOSE: To improve the corrosion resistance of a heat exchanger and to enable the use of an inexpensive SS material as a material of the exchanger by charging an aqueous NaCl soln. into an electrolytic cell after adding a reducing agent and by heating the soln. through the heat exchanger.
CONSTITUTION: In a heating method for an aqueous NaCl soln. charged into an electrolytic cell through a heat exchanger, to the soln. to be heated is added a reducing agent beforehand. The preferably used reducing agent includes Na2SO3. By adding a very small amount of CoCl2.6H2O as a reduction accelerator together with Na2SO3 as the reducing agent, the corrosion of the exchanger is preventd almost thoroughly. The reason why the corrosion is inhibited by adding the reducing agent is estimated to be that a trace of O2 dissolved in the soln. takes part in the corrosion and the dissolved O2 is removed by adding the reducing agent or further adding the reduction accelerator.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8048081A JPS57196721A (en) | 1981-05-27 | 1981-05-27 | Preventing method for corrosion of heat exchanger for heating aqueous salt solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8048081A JPS57196721A (en) | 1981-05-27 | 1981-05-27 | Preventing method for corrosion of heat exchanger for heating aqueous salt solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57196721A true JPS57196721A (en) | 1982-12-02 |
Family
ID=13719432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8048081A Pending JPS57196721A (en) | 1981-05-27 | 1981-05-27 | Preventing method for corrosion of heat exchanger for heating aqueous salt solution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57196721A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718299A (en) * | 2012-07-09 | 2012-10-10 | 青岛理工大学 | A kind of preparation method of coagulation dephosphorization agent |
-
1981
- 1981-05-27 JP JP8048081A patent/JPS57196721A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718299A (en) * | 2012-07-09 | 2012-10-10 | 青岛理工大学 | A kind of preparation method of coagulation dephosphorization agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR830009272A (en) | Surface removal method in electrolyte without acid using high current density | |
| JPS57196721A (en) | Preventing method for corrosion of heat exchanger for heating aqueous salt solution | |
| JPS529963A (en) | Method for removing arsenic and silicic acid contained in aqueous solu tion simultaneously | |
| JPS5311343A (en) | Heat accumulator tank | |
| JPS5724634A (en) | Deoxydizer composition | |
| JPS54124009A (en) | Suppression of heat browning of phospholipids | |
| JPS52138489A (en) | Treatment of cation exchanger | |
| JPS55165944A (en) | Curative solution for resol type phenol resin for hot box | |
| JPS5331586A (en) | Activation treating method for selective ion exchanger | |
| JPS5294880A (en) | Antifreezing solution composition | |
| JPS54127408A (en) | Control of browning of phosphorus lipide by heating | |
| JPS57197084A (en) | Treatment of water containing boron and cod substance | |
| JPS5747881A (en) | Preventing method for corrosion of copper or copper alloy pipe for hot water supply | |
| JPS53121240A (en) | Solar heat boiler | |
| Masui et al. | Effects of Phosphorus Content and Heat Induced Structural Changes in Electrodeposited Nickel--Phosphorus Alloys on[Their] Resistance to Acid Corrosion | |
| JPS57200221A (en) | Method for preventing hydrolysis of tin salt in acidic solution of tin salt | |
| JPS53147200A (en) | Treating method of radioactive waste liquid | |
| SU1093354A1 (en) | Method of preparing fatty acid reagent for ore flotation | |
| JPS5314196A (en) | Anti-corrosive method for nozzle | |
| Oryshich et al. | Advanced technique for testing high-temperature salt corrosion resistance | |
| JPS57101697A (en) | Passivation of steel | |
| JPS5454481A (en) | Protective film for reflective plate surface | |
| JPS56131695A (en) | Agent which is corrosion-resistant and inhibits lowering of boiling point | |
| JPS5336534A (en) | Electrolytic coating | |
| JPS5696061A (en) | Cobalt-nickel alloy magnetic thin film |