KR20040023612A - 황산의 생산중 오스테나이트강 또는 준 안정화오스테나이트강으로 제조된 강재부에 대한 방식방법 - Google Patents
황산의 생산중 오스테나이트강 또는 준 안정화오스테나이트강으로 제조된 강재부에 대한 방식방법 Download PDFInfo
- Publication number
- KR20040023612A KR20040023612A KR10-2003-7016039A KR20037016039A KR20040023612A KR 20040023612 A KR20040023612 A KR 20040023612A KR 20037016039 A KR20037016039 A KR 20037016039A KR 20040023612 A KR20040023612 A KR 20040023612A
- Authority
- KR
- South Korea
- Prior art keywords
- steel
- sulfuric acid
- austenitic
- range
- ratio
- Prior art date
Links
Classifications
-
- 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
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/005—Anodic protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/004—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using protective electric currents, voltages, cathodes, anodes, electric short-circuits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Prevention Of Electric Corrosion (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Spark Plugs (AREA)
Abstract
Description
온도 ℃ | 1.4571 | 1.4404 | 1.4465 | 1.4591 | |
부식율mm/a | 160 | 0.02 | 0.03 | 0.15 | - |
180 | 0.06 | 0.04 | 0.06 | 0.01 | |
200 | 0.04 | 0.10 | 0.14 | 0.11 |
Claims (9)
- 황산을 생산하는 플랜트에 사용되는 장치 중 농축 황산과 접촉하는 적어도 하나의 강재부에 대한 방식방법에 있어서,93 wt-% 내지 100 wt-% 농도의 황산 및 140℃ 내지 황산의 끊는점까지의 온도에서, 상기 강재부는, 15 wt-% 내지 36 wt-% 의 Cr 및 9 wt-% 내지 60 wt-% 의 Ni 함량을 가지며, 화학성분 (Cr + Si)/(Ni + Mo)의 비가 0.9 내지 1.9 의 범위에 있거나, 또는 화학성분 Cr/(Ni + Mo)의 비가 0.8 내지 1.5 의 범위에 있으며, 오스테나이트강 또는 준 안정화 오스테나이트강으로 제조되며 또한 양극방식이 실시되며, 양극, 음극 및 기준전극은 가변직류를 제공하는 정전위전해장치와 연결되어 있고, 음극과 기준전극은 황산과 접촉하며 양극은 강재부와 접촉하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 화학성분 (Cr + Si)/(Ni + Mo)의 비가 1.01 내지 1.34 의 범위에 있는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 화학성분 Cr/(Ni + Mo)의 비가 0.8 내지 1.1 의 범위에 있는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 강재부는 0 wt-% 내지 2.5 wt-% 함량의 몰리브덴을갖는 오스테나이트강 또는 준 안정화 오스테나이트강으로 제조되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 강재부는, 2 wt-% 내지 2.5 wt-% 함량의 몰리브덴을 갖는 오스테나이트강 또는 준 안정화 오스테나이트강으로 제조되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 황산의 농도가 97 wt-% 내지 99 wt-%의 범위에 있는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 황산의 온도가 약 160℃ 내지 230℃ 인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 강재부는 열교환기에 사용되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 강재부는 산 유도관에 사용되는 것을 특징으로 하는 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10128032.7 | 2001-06-08 | ||
DE10128032A DE10128032A1 (de) | 2001-06-08 | 2001-06-08 | Verfahren zum Schutz gegen Korrossion eines Stahlteils aus austenitischem oder halbaustenitischem Stahl bei der Herstellung von Schwefelsäure |
PCT/EP2002/005842 WO2002101106A1 (en) | 2001-06-08 | 2002-05-28 | Method for the protection against corrosion of a steel part made of austenitic or semi-austenitic steel during the production of sulfuric acid |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20040023612A true KR20040023612A (ko) | 2004-03-18 |
Family
ID=7687749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-2003-7016039A KR20040023612A (ko) | 2001-06-08 | 2002-05-28 | 황산의 생산중 오스테나이트강 또는 준 안정화오스테나이트강으로 제조된 강재부에 대한 방식방법 |
Country Status (11)
Country | Link |
---|---|
US (1) | US20040238375A1 (ko) |
EP (1) | EP1409756B1 (ko) |
JP (1) | JP2004529274A (ko) |
KR (1) | KR20040023612A (ko) |
AT (1) | ATE340274T1 (ko) |
DE (2) | DE10128032A1 (ko) |
EA (1) | EA006778B1 (ko) |
ES (1) | ES2272733T3 (ko) |
MX (1) | MXPA03011234A (ko) |
PE (1) | PE20030023A1 (ko) |
WO (1) | WO2002101106A1 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009051735A2 (en) * | 2007-10-18 | 2009-04-23 | Roberts, Wayne | High efficiency, corrosion resistant heat exchanger and methods of use thereof |
DE102010006541B4 (de) | 2010-02-01 | 2016-03-17 | Outotec Oyj | Verfahren und Anlage zum Abkühlen von Säure |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0018124A1 (en) * | 1979-04-02 | 1980-10-29 | Monsanto Company | Anodically passivated vessel and method of passivating it |
CA1199305A (en) * | 1982-01-21 | 1986-01-14 | C-I-L Inc. | Anodic protection system and method |
US5028396A (en) * | 1982-06-11 | 1991-07-02 | Chemetics International Company, Ltd. | Apparatus formed of high silicon chromium/nickel in steel in the manufacture of sulpheric acid |
US4576813A (en) * | 1983-07-05 | 1986-03-18 | Monsanto Company | Heat recovery from concentrated sulfuric acid |
DE4342188C2 (de) * | 1993-12-10 | 1998-06-04 | Bayer Ag | Austenitische Legierungen und deren Verwendung |
DE19807632A1 (de) * | 1998-02-23 | 1999-09-02 | Bayer Ag | Vorrichtung zum Konzentrieren und Reinigen von Schwefelsäure |
-
2001
- 2001-06-08 DE DE10128032A patent/DE10128032A1/de not_active Withdrawn
-
2002
- 2002-05-28 ES ES02743117T patent/ES2272733T3/es not_active Expired - Lifetime
- 2002-05-28 MX MXPA03011234A patent/MXPA03011234A/es active IP Right Grant
- 2002-05-28 DE DE60214859T patent/DE60214859T2/de not_active Expired - Lifetime
- 2002-05-28 KR KR10-2003-7016039A patent/KR20040023612A/ko not_active Application Discontinuation
- 2002-05-28 AT AT02743117T patent/ATE340274T1/de not_active IP Right Cessation
- 2002-05-28 EA EA200400008A patent/EA006778B1/ru not_active IP Right Cessation
- 2002-05-28 JP JP2003503852A patent/JP2004529274A/ja active Pending
- 2002-05-28 US US10/479,304 patent/US20040238375A1/en not_active Abandoned
- 2002-05-28 EP EP02743117A patent/EP1409756B1/en not_active Expired - Lifetime
- 2002-05-28 WO PCT/EP2002/005842 patent/WO2002101106A1/en active IP Right Grant
- 2002-06-07 PE PE2002000475A patent/PE20030023A1/es not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JP2004529274A (ja) | 2004-09-24 |
ATE340274T1 (de) | 2006-10-15 |
EP1409756A1 (en) | 2004-04-21 |
DE10128032A1 (de) | 2002-12-12 |
US20040238375A1 (en) | 2004-12-02 |
EA006778B1 (ru) | 2006-04-28 |
PE20030023A1 (es) | 2003-02-03 |
EP1409756B1 (en) | 2006-09-20 |
DE60214859D1 (de) | 2006-11-02 |
MXPA03011234A (es) | 2004-02-26 |
ES2272733T3 (es) | 2007-05-01 |
WO2002101106A1 (en) | 2002-12-19 |
DE60214859T2 (de) | 2007-04-12 |
EA200400008A1 (ru) | 2004-04-29 |
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