EP0361554B1 - Verwendung von ferritischen Chrom-Molybdän-Stählen als gegen konzentrierte Schwefelsäure beständigem Werkstoff - Google Patents
Verwendung von ferritischen Chrom-Molybdän-Stählen als gegen konzentrierte Schwefelsäure beständigem Werkstoff Download PDFInfo
- Publication number
- EP0361554B1 EP0361554B1 EP89202071A EP89202071A EP0361554B1 EP 0361554 B1 EP0361554 B1 EP 0361554B1 EP 89202071 A EP89202071 A EP 89202071A EP 89202071 A EP89202071 A EP 89202071A EP 0361554 B1 EP0361554 B1 EP 0361554B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sulfuric acid
- molybdenum
- chromium
- carbon
- concentrated sulfuric
- 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.)
- Revoked
Links
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims description 37
- 239000000463 material Substances 0.000 title claims description 26
- 229910000831 Steel Inorganic materials 0.000 title claims description 8
- 239000010959 steel Substances 0.000 title claims description 8
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 title claims description 6
- 238000005260 corrosion Methods 0.000 claims description 18
- 230000007797 corrosion Effects 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 239000010955 niobium Substances 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 235000011149 sulphuric acid Nutrition 0.000 claims 4
- 239000001117 sulphuric acid Substances 0.000 claims 4
- 239000005864 Sulphur Substances 0.000 claims 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- VMWYVTOHEQQZHQ-UHFFFAOYSA-N methylidynenickel Chemical compound [Ni]#[C] VMWYVTOHEQQZHQ-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
Definitions
- the invention relates to the use of a ferritic chromium-molybdenum steel with good corrosion resistance to concentrated sulfuric acid.
- Sulfuric acid is generally produced by catalytic conversion of the SO2 content of gases to SO3 and - in the case of dry gases - subsequent absorption of the SO3 formed in concentrated sulfuric acid or - in the case of moist gases - subsequent condensation of the sulfuric acid formed.
- DE-C-21 54 126 discloses the use of an austenitic nickel alloy containing chromium, molybdenum, cobalt, manganese, copper and silicon for acid concentrations of 65% and more. Because of its difficult deformability, this alloy is limited to use as shafts, bearings, pumps, valve components and the like elements.
- DE-A-33 20 527 discloses the use of austenitic steels with a silicon content of 4.6-5.8%. The processability and the production of this material is difficult.
- EP-B-0 130 967 describes four materials for use in sulfuric acid from 98 to 101% and a temperature of more than 120 ° C. The best corrosion properties are found in the ferritic alloy Alloy 26-1 (material no. 1.4131, XlCrMo261), the maximum nickel content of which is 0.5%. However, this material causes processing difficulties and its resistance to corrosion decreases sharply as the concentration of sulfuric acid decreases.
- ferritic material 29-4-2 is mentioned as the next best material for use in sulfuric acid of 98-101%.
- This material contains 28-30% Cr, 3.50-4.20% Mo and 2.00-2.50 Ni. This material also causes considerable difficulties in processing and its corrosion resistance decreases sharply as the concentration of sulfuric acid decreases.
- EP-B-0 200 862 discloses the use of a molybdenum-free, chromium-containing alloy for use in sulfuric acid above 96% and temperatures up to 350 ° C., it being irrelevant whether it is ferritic or ferritic -austenitic or austenitic structure is present. This material does not have sufficient corrosion resistance, especially in the austenitic and austenitic-ferritic structure and in the case of sulfuric acids with a lower concentration.
- the invention has for its object to provide a material which has a high corrosion resistance even in lower sulfuric acid concentrations, has good kneading properties and thus processing properties, and which can be produced inexpensively.
- ferritic chromium-molybdenum steels 26 to 30% chrome 1.8 to 3.0% molybdenum 3.0 to 4.5% nickel carbon ⁇ 0.02% silicon ⁇ 1.00% manganese ⁇ 1.00% sulfur ⁇ 0.015% Carbon + nitrogen ⁇ 0.045% niobium ⁇ 12 x% C ⁇ 1.2% Remainder iron as well as impurities due to melting technology
- Remainder iron As a corrosion-resistant material for the manufacture of structural parts that are resistant to sulfuric acid at a concentration equal to or greater than 94% by weight with a temperature below the boiling point.
- Contamination-related impurities can e.g. its phosphorus, aluminum, vanadium, titanium, tantalum, calcium, magnesium, cerium, boron.
- the material has good forming properties and is very well suited for the production of structural parts from sheet metal or strips, e.g. Heat exchangers, pipes, pump systems, sprinkler systems, absorbers, etc.
- the material is also corrosion-resistant to cold sulfuric acid.
- a preferred embodiment consists in the use of a ferritic chromium-molybdenum steel 27 to 29% chrome 2.0 to 3.0% molybdenum 3.0 to 4.5% nickel carbon ⁇ 0.02% Carbon + nitrogen ⁇ 0.045% (Niobium + zircon) ⁇ 10 x% (carbon + nitrogen) Remainder iron as well as impurities due to melting technology
- This steel shows particularly good corrosion properties.
- Table I shows the corrosion behavior of the material according to the invention at different temperatures and sulfuric acid concentrations.
- the corrosion behavior was determined by immersion tests. The test duration was 25 days in all cases. The removal rates were determined by gravimetric differential weighing and conversion to mm / a. The test medium was renewed after each test cycle.
- the material contained 28% Cr, 2% Mo and 4% Ni.
- the removal rates in sulfuric acid with a concentration of 95% by weight were: at 100 ° C 0.06 mm / a at 125 ° C 0.05 mm / a at 150 ° C 0.32 mm / a
- the advantages of the use of the material according to the invention are that the tendency to precipitate brittle, intermetallic phases is relatively low for the molybdenum.
- the nickel content increases the elimination inertia relatively strongly and narrows the heterogeneous areas in the thermodynamic equilibrium. The combination of these two effects leads to a higher structural stability during welding and during heat treatment processes. This results in good corrosion resistance and ductility in the form of impact strength.
- the material can be welded up to a thickness of 50 mm, while the material 29-4-2 can only be welded up to about 2 mm.
- the material according to the invention therefore has very good processability with very good corrosion resistance.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Catalysts (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Heat Treatment Of Articles (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3830365A DE3830365C2 (de) | 1988-09-07 | 1988-09-07 | Verwendung von ferritischen Chrom - Molybdän-Stählen als gegen konzentrierte Schwefelsäure beständigem Werkstoff |
DE3830365 | 1988-09-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0361554A1 EP0361554A1 (de) | 1990-04-04 |
EP0361554B1 true EP0361554B1 (de) | 1993-06-09 |
Family
ID=6362436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89202071A Revoked EP0361554B1 (de) | 1988-09-07 | 1989-08-10 | Verwendung von ferritischen Chrom-Molybdän-Stählen als gegen konzentrierte Schwefelsäure beständigem Werkstoff |
Country Status (7)
Country | Link |
---|---|
US (1) | US5030415A (xx) |
EP (1) | EP0361554B1 (xx) |
JP (1) | JP3137968B2 (xx) |
AU (1) | AU615105B2 (xx) |
DE (2) | DE3830365C2 (xx) |
ES (1) | ES2040981T3 (xx) |
ZA (1) | ZA896817B (xx) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5207980A (en) * | 1991-10-27 | 1993-05-04 | Westinghouse Electric Corp. | Top nozzle-mounted replacement guide pin assemblies |
ZA938889B (en) * | 1992-12-07 | 1994-08-01 | Mintek | Stainless steel composition |
DE4342188C2 (de) * | 1993-12-10 | 1998-06-04 | Bayer Ag | Austenitische Legierungen und deren Verwendung |
DE102005008109A1 (de) | 2005-02-21 | 2006-08-24 | Outokumpu Technology Oy | Verfahren und Anlage zur Herstellung von Schwefelsäure |
ES2351281B1 (es) * | 2009-02-03 | 2011-09-28 | Valeo Termico, S.A. | Intercambiador de calor para gases, en especial de los gases de escape de un motor. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0018131A1 (en) * | 1979-04-06 | 1980-10-29 | Kureha Kagaku Kogyo Kabushiki Kaisha | Crosslinked, carboxyalkylated and deacetylated derivative of chitin, process for preparation thereof, and use thereof as an adsorbent material |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2091642A5 (en) * | 1970-05-16 | 1972-01-14 | Nippon Steel Corp | Stainless steel resistant to pitting corrosion -and suitable for comp - used in sewater |
AT338854B (de) * | 1972-09-04 | 1977-09-26 | Ver Edelstahlwerke Ag | Ferritische bzw. ferritisch-austenitische stahllegierungen fur gegenstande, die gegen saure- und wassergemische bis 70grad c korrosionsbestandig sind |
FR2324752A1 (fr) * | 1975-06-24 | 1977-04-15 | Sandvik Ab | Acier inoxydable resistant a l'acide sulfurique concentre |
GB1565419A (en) * | 1976-04-27 | 1980-04-23 | Crucible Inc | Stainless steel welded articles |
CA1181569A (en) * | 1982-06-11 | 1985-01-29 | Frank Smith | Apparatus and process |
DE3508532A1 (de) * | 1985-03-09 | 1986-09-18 | Bayer Ag, 5090 Leverkusen | Verwendung einer chromhaltigen legierung |
-
1988
- 1988-09-07 DE DE3830365A patent/DE3830365C2/de not_active Expired - Fee Related
-
1989
- 1989-08-10 DE DE8989202071T patent/DE58904618D1/de not_active Revoked
- 1989-08-10 EP EP89202071A patent/EP0361554B1/de not_active Revoked
- 1989-08-10 ES ES198989202071T patent/ES2040981T3/es not_active Expired - Lifetime
- 1989-08-24 US US07/398,114 patent/US5030415A/en not_active Expired - Lifetime
- 1989-09-06 AU AU41073/89A patent/AU615105B2/en not_active Ceased
- 1989-09-06 ZA ZA896817A patent/ZA896817B/xx unknown
- 1989-09-07 JP JP01232682A patent/JP3137968B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0018131A1 (en) * | 1979-04-06 | 1980-10-29 | Kureha Kagaku Kogyo Kabushiki Kaisha | Crosslinked, carboxyalkylated and deacetylated derivative of chitin, process for preparation thereof, and use thereof as an adsorbent material |
Non-Patent Citations (3)
Title |
---|
STAHL UND EISEN, 1990; Seite 73# * |
STAHLSCHLÜSSEL, 1985; Seite 344, Nr. 41# * |
STAHLSCHLÜSSEL, 1992; Seite 292, Nr. 1.4575# * |
Also Published As
Publication number | Publication date |
---|---|
AU4107389A (en) | 1990-03-15 |
DE3830365C2 (de) | 1996-06-27 |
ZA896817B (en) | 1991-05-29 |
JPH02107745A (ja) | 1990-04-19 |
AU615105B2 (en) | 1991-09-19 |
DE58904618D1 (de) | 1993-07-15 |
JP3137968B2 (ja) | 2001-02-26 |
DE3830365A1 (de) | 1990-03-15 |
US5030415A (en) | 1991-07-09 |
ES2040981T3 (es) | 1993-11-01 |
EP0361554A1 (de) | 1990-04-04 |
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