RO101759B1 - Procedeu pentru protectia suprafetelor din otel carbon din instalatiile de fabricare a apei grele - Google Patents
Procedeu pentru protectia suprafetelor din otel carbon din instalatiile de fabricare a apei greleInfo
- Publication number
- RO101759B1 RO101759B1 RO132993A RO13299388A RO101759B1 RO 101759 B1 RO101759 B1 RO 101759B1 RO 132993 A RO132993 A RO 132993A RO 13299388 A RO13299388 A RO 13299388A RO 101759 B1 RO101759 B1 RO 101759B1
- Authority
- RO
- Romania
- Prior art keywords
- heavy water
- protective film
- hydrogen sulfide
- installations
- carbon steel
- Prior art date
Links
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 3
- 229910000975 Carbon steel Inorganic materials 0.000 title 1
- 239000010962 carbon steel Substances 0.000 title 1
- 238000009434 installation Methods 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- 230000001681 protective effect Effects 0.000 abstract 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical class [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 abstract 1
- 230000001464 adherent effect Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052960 marcasite Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 229910052683 pyrite Inorganic materials 0.000 abstract 1
- 239000011028 pyrite Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Procedeul pentru formare în medii cu hidrogen sulfurat a unei pelicule protectoare de sulfuri de fier pe suprafata otelurilor, conform inventiei, consta în aceea ca, dupa o prealabila curatare a suprafetelor metalice respective cu o solutie 3% NaOH la temperatura de 60...70 degree C, timp de 24 h, acestea se pun în contact cu apa demineralizata cu pH initial de 8,5...9,5, la care s-au adaugat 10 supra -4... 10 supra-3 mol/NaOH, saturata apoi cu hidrogen sulfurat de puritate 99% la temperatura de 100 pâna la 130 degree C si presiunea de 15 bari, timp de 30...40 zile, cu asigurarea unui continut de maximum 10% H2 în faza gazoasa. Pelicula protectoare care se formeaza are un continut ridicat de pirotita cu slabe urme de marcasita. Depunerea este aderenta si compacta, conferind otelului o protectie anticorosiva în mediul de lucru al procesului G.S. de fabricare a apei grele - apa saturata cu hidrogen sulfurat. Pelicula protectoare reduce transportul de fier în instalatiile G.S. de producere a apei grele.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO1988132993A RO101759A2 (ro) | 1988-04-11 | 1988-04-11 | Procedeu pentru protectia suprafetelor din otel carbon din instalatiile de fabricare a apei grele |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO1988132993A RO101759A2 (ro) | 1988-04-11 | 1988-04-11 | Procedeu pentru protectia suprafetelor din otel carbon din instalatiile de fabricare a apei grele |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO101759B1 true RO101759B1 (ro) | 1991-07-30 |
| RO101759A2 RO101759A2 (ro) | 1991-12-09 |
Family
ID=20121449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO1988132993A RO101759A2 (ro) | 1988-04-11 | 1988-04-11 | Procedeu pentru protectia suprafetelor din otel carbon din instalatiile de fabricare a apei grele |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO101759A2 (ro) |
-
1988
- 1988-04-11 RO RO1988132993A patent/RO101759A2/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO101759A2 (ro) | 1991-12-09 |
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