US3719355A - Basic oxygen converter - Google Patents

Basic oxygen converter Download PDF

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Publication number
US3719355A
US3719355A US00180268A US3719355DA US3719355A US 3719355 A US3719355 A US 3719355A US 00180268 A US00180268 A US 00180268A US 3719355D A US3719355D A US 3719355DA US 3719355 A US3719355 A US 3719355A
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US
United States
Prior art keywords
coolant
converter
tubes
half tubes
tube
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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 - Lifetime
Application number
US00180268A
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English (en)
Inventor
K Suette
A Riegler
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Voestalpine AG
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Voestalpine AG
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Filing date
Publication date
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4646—Cooling arrangements

Definitions

  • the invention relates to a basic oxygen converter having a metal shell comprising at thermally highly stressed areas, in particular in the area between the carrying ring and the converter mouth, at least one pipe coil group through which a coolant is flowing and which includes several half tubes of preferably semicircular cross section welded to the converter shell and joined at one end to a coolant distributor and at the other end to a coolant collector, wherein the improvement resides in that for the purpose of obtaining a pressure equalization and a uniform flow of the cooling agent, the half tubes of each group are connected with each other by means of cross canals on at least one site.
  • the invention relates to a basic oxygen converter having a metal shell comprising at thermally highly stressed areas, in particular in the area between the carrying ring and the converter mouth, at least one pipe coil group through which a coolant is flowing and which includes several half tubes of preferably semicircular cross section welded to the converter shell and joined at one end to a coolant distributor and at the other end to a coolant collector.
  • furnace parts are either designed to be hollow or they are provided with a jacket so that by passing through a cold fluid coolant excess heat damaging these furnace parts may be guided off.
  • cooling coils or cooling canals are known which are formed by half tubes or similar sections welded onto the furnace parts as this has e.g. been proposed in the German printed application No. 1,103,952.
  • converter head i.e. the converter part above the carrying ring up to the converter mouth.
  • converter head cooling comprises individual tubes which are split up in the longitudinal extension of the tubes and welded to the converter shell, several tube coils being individually joined with their respective delivery parts and discharge parts to a common coolant distributor and a common coolant collector.
  • Each individual coolant coil is laid in one or more windings, spaced from the other windings, around the converter shell to form a so-called multiple helix.
  • the cooling agent is supplied through a bore in the converter carrying trunnion or through the hollow con verter carrying ring in the surroundings of which the mentioned coolant distributors and coolant collectors are arranged.
  • This system of cooling in which individual cooling coils are employed and each coil is separately joined to a coolant collector and distributor, respectively, has been taken over from the boiler construction and is described e.g. in the book by Ledinegg, M.: Dampferzeugung, Springer-Verlag, Vienna, 1952, pages 16, 17, 38, 39, 45, 46, 47 and 49.
  • This known cooling system for a converter has several disadvantages.
  • lrregularities in the supply of the individual cooling coils have to be expected also because the cooling coils have varying curvatures and deflections, which also cause changes in the current resistance for the coolant.
  • a further disadvantage of the known cooling system resides in that the make and mounting of tubes which are split in their longitudinal extension and may e.g. have a semicircular cross section present great difficulties, because these half tubes have to be bent in two planes, so that they may be adapted to the conical, spherical and cylindrical wall of a converter.
  • the main work has to be performed during mounting because the laying of the tubes in a helical line necessitates appropriate adaptation and changing operations which cannot completely be carried out earlier in the workshop; mounting thus is rather expensive.
  • the invention is aimed at avoiding these disadvantages and difficulties by creating a converter shell cooling system which is improved in current technological and operating safety respects, which, moreover, may easily be produced and whose mounting is inexpensive.
  • the invention resides in that for the purpose of obtaining a pressure equalization and a uniform flow of the cooling agent, the half tubes of each group are interconnected by means of cross canals on at least one site.
  • a further important feature of the invention resides in that the half tubes, over a major part of the circumference of the converter shell are bent in a single plane which is perpendicular to the converter axis.
  • tube coil groups may be arranged one above the other and their half tubes may be connected with each other by slanting connecting tubes.
  • a second embodiment is characterized in that several tube coil groups are arranged one above the other, the half tubes of each group being joined to a common coolant distributor and to a common coolant collector.
  • tube coil groups may be arranged one above the other, the half tubes of each group being joined to a coolant distributor and collector each.
  • FIG. 1 is a lateral view of an upper part (head) of a basic oxygen converter, partly in section; three tube coil groups are provided one above the other and current technologically they are arranged one after the other.
  • FIG. 2 is a similar representation as FIG. 1, but in this embodiment the three tube coil groups are current technologically arranged in parallel, these groups being joined to a common, vertically arranged coolant distributor and collector, respectively.
  • FIG. 3 is a similar represenation as that of FIG. 2, the three tube coil groups are current technologically in parallel but each of the groups is separately joined to a coolant distributor or collector, respectively.
  • 1 numeral 1 denotes the metal shell of the converter, which is provided with a refractory lining 2 and a mouth ring 3.
  • a coolant distributor 4 is provided for supplying coolant water via the connecting tubes 5 to 8 to a tube coil group which comprises half tubes 9 to 12 which are welded to the converter shell.
  • These tubes preferably have a semicircular cross section; it is, however, possible to use also other commercial, open sections, such as channel sections, trough sections, semi-elliptical sections and the like.
  • the half tubes 9 to 12 are laid in parallel in horizontal planes, i.e.
  • slanting half tube pieces 13 to 16 are provided.
  • the tube coil group 9 to 12' is connected with the next higher tube coil group 9" to 12" again by slanting half tube pieces 13' to 16'.
  • the collectin g part of the cooling system comprises tubes 17 to 20 which connect the half tubes 9" to 12" of the uppermost tube coil group with the cooling agent collector 21.
  • the current direction of the coolant is indicated by arrows. As may be derived from FIG.
  • cross canals 22 are provided which likewise may be formed by half tubes welded to the converter shell 1, so that within one tube coil group the pressure is equalized and the flow of the cooling medium is rendered uniform. It is possible that in the individual tube coil groups different numbers of cross canals 22 are provided which also may be arranged differently around the circumference of the converter shell. For instance, it is suitable to provide more cross canals at the thermally higher stressed places, such as at the discharge side of the converter shell, in order to guarantee the desired equalization of pressure and flow.
  • FIG. 2 three horizontal tube coil groups with half tubes 24 to 27, 24 to 27 and 24" to 27" are provided which surround the total circumference of the metal shell 1 and which are joined to a common, vertically arranged cooling agent distributor 28 and a common cooling agent collector 29.
  • Coolant distributor 28 and coolant collector 29 are formed of differently dimensioned tube parts 30 to 32 which are connected with the individual half tubes of the tube coil groups by connecting tubes 33.
  • the individual half tubes of the tube coil groups are closed at their ends; these ends are denoted with 34.
  • the cross canals between the half tubes of each tube coil group are again denoted with 22.
  • a tube coil group formed of the half tubes 35 to 38 is connected by tube pieces 39 to 42 with an individual cooling agent distributor 43 and by tube pieces 44 to 47 with a cooling agent collector 48 of its own.
  • the cross canals connecting the half tubes of each tube coil group are again denoted with 22.
  • the tube coil group lying below is formed by the half tubes 49 to 52, which likewise are connected by tube pieces 54 to 57 with a coolinga ent distributor 53 and by the tube pieces 58 to 61 wit a coolant collector 62 of its own.
  • the coolant distributors 43, 53 and the coolant collectors 48, 62 are spaced around the converter shell by A third coolant collector and coolant distributor (not shown) are arranged at the back side of the converter and they are connected in the described manner with a third tube coil group, comprising the half tubes 63 to 66.
  • a basic oxygen converter comprising a refractory-lined metal shell, supported in a carrying ring and having a mouth substantially at the top,
  • At least one pipe coil group including a plurality of half tubes welded to said metal shell in thermally highly stressed areas comprising the area between said carrying ring and said mouth,
  • a coolant collector having connection to an other end of each half tube to provide for circulation of a coolant through said at least one pipe coil group; said half tubes of said at least one pipe coil group being interconnected on at least one place of their longitudinal extension by cross canals ensuring equalization of pressure and even flow of said coolant.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US00180268A 1970-09-24 1971-09-14 Basic oxygen converter Expired - Lifetime US3719355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT861370A AT317271B (de) 1970-09-24 1970-09-24 Sauerstoffaufblaskonverter

Publications (1)

Publication Number Publication Date
US3719355A true US3719355A (en) 1973-03-06

Family

ID=3607036

Family Applications (1)

Application Number Title Priority Date Filing Date
US00180268A Expired - Lifetime US3719355A (en) 1970-09-24 1971-09-14 Basic oxygen converter

Country Status (9)

Country Link
US (1) US3719355A (de)
AT (1) AT317271B (de)
BE (1) BE772808A (de)
CS (1) CS181214B2 (de)
DE (2) DE2135668A1 (de)
ES (1) ES197599Y (de)
FR (1) FR2107942B1 (de)
LU (1) LU61853A1 (de)
SE (1) SE391731B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963223A (en) * 1973-07-23 1976-06-15 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Metallurgical vessel, in particular a converter
US4230307A (en) * 1977-09-26 1980-10-28 O'okiep Copper Company Limited Cooling apparatus for copper converter opening
US4278241A (en) * 1980-07-18 1981-07-14 Chicago Bridge & Iron Company Top cone cooling system for basic oxygen furnace
US5176875A (en) * 1990-11-20 1993-01-05 Mitsubishi Materials Corporation Tubular water-cooled jacket for furnaces
EP1740728A1 (de) * 2004-04-26 2007-01-10 Technological Resources Pty. Ltd. Vorrichtung zur metallurgischen verarbeitung
AU2005235628B2 (en) * 2004-04-26 2011-03-17 Technological Resources Pty Limited Metallurgical processing installation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333841C1 (de) * 1983-09-20 1984-08-30 Mannesmann AG, 4000 Düsseldorf Metallurgisches Gefaess,insbesondere stationaerer oder auswechselbarer Stahlwerkskonverter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588072A (en) * 1967-09-16 1971-06-28 Kawasaki Heavy Ind Ltd Cooling apparatus for a converter body

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588072A (en) * 1967-09-16 1971-06-28 Kawasaki Heavy Ind Ltd Cooling apparatus for a converter body

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963223A (en) * 1973-07-23 1976-06-15 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Metallurgical vessel, in particular a converter
US4230307A (en) * 1977-09-26 1980-10-28 O'okiep Copper Company Limited Cooling apparatus for copper converter opening
US4278241A (en) * 1980-07-18 1981-07-14 Chicago Bridge & Iron Company Top cone cooling system for basic oxygen furnace
US5176875A (en) * 1990-11-20 1993-01-05 Mitsubishi Materials Corporation Tubular water-cooled jacket for furnaces
EP1740728A1 (de) * 2004-04-26 2007-01-10 Technological Resources Pty. Ltd. Vorrichtung zur metallurgischen verarbeitung
JP2007534915A (ja) * 2004-04-26 2007-11-29 テクノロジカル リソーシズ プロプライエタリー リミテッド 冶金処理装置
US20070290419A1 (en) * 2004-04-26 2007-12-20 Technological Resources Pty Limited Metallurgical Processing Installation
AU2005235628B2 (en) * 2004-04-26 2011-03-17 Technological Resources Pty Limited Metallurgical processing installation
US7947217B2 (en) * 2004-04-26 2011-05-24 Technological Resources Pty. Limited Metallurgical processing installation
EP1740728B1 (de) * 2004-04-26 2014-01-22 Technological Resources Pty. Ltd. Vorrichtung zur metallurgischen verarbeitung

Also Published As

Publication number Publication date
FR2107942A1 (de) 1972-05-12
AT317271B (de) 1974-08-26
LU61853A1 (de) 1971-05-04
FR2107942B1 (de) 1976-07-23
DE7127402U (de) 1971-10-14
DE2135668A1 (de) 1972-03-30
SE391731B (sv) 1977-02-28
ES197599U (es) 1975-04-16
CS181214B2 (en) 1978-03-31
BE772808A (fr) 1972-01-17
ES197599Y (es) 1975-09-16

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