EP0423862B1 - Installation de production de vent chaud avec jonction - Google Patents

Installation de production de vent chaud avec jonction Download PDF

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Publication number
EP0423862B1
EP0423862B1 EP19900202611 EP90202611A EP0423862B1 EP 0423862 B1 EP0423862 B1 EP 0423862B1 EP 19900202611 EP19900202611 EP 19900202611 EP 90202611 A EP90202611 A EP 90202611A EP 0423862 B1 EP0423862 B1 EP 0423862B1
Authority
EP
European Patent Office
Prior art keywords
junction
mains
hot blast
main
circular
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
Application number
EP19900202611
Other languages
German (de)
English (en)
Other versions
EP0423862A1 (fr
Inventor
Herman Thomassen
Ronald Johannes Maria Stokman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tata Steel Ijmuiden BV
Original Assignee
Hoogovens Groep BV
Hoogovens Staal BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Hoogovens Groep BV, Hoogovens Staal BV filed Critical Hoogovens Groep BV
Publication of EP0423862A1 publication Critical patent/EP0423862A1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C21B9/10—Other details, e.g. blast mains

Definitions

  • the invention relates to a junction of a first and a second substantially circular hot blast mains which extend substantially horizontally, suitable for use in a hot blast main construction for feeding hot blast into a blast furnace.
  • Each hot blast main comprises a circular-section steel jacket which is provided on its inside with refractory brickwork.
  • a junction of hot blast mains as described above is discussed in US-A-3 853 307, for use in the hot blast mains of a blast furnace.
  • a triangular flat arch is provided comprising special bricks which are suspended on a flat transitional steel plate by means of stainless steel suspension anchors.
  • This flat transitional steel plate is interposed where the first and the second hot blast mains meet each other.
  • the junction is also provided with intermediate steel pieces which complete the joint between the respective circular steel jackets of the hot blast mains and the triangular flat plate. These intermediate pieces are curved and the degree of curving depends on the diameters of the hot blast mains coupled together.
  • this curving is part-cylindrical in shape, but in the case of different diameters the intermediate pieces take the shape of a portion of a conic section.
  • the steel structure must be provided with reinforcements to ensure that the arch stays flat on the inside of the hot blast mains. This construction has the disadvantage of complexity of shapes of the steel jacket parts and of the brickwork.
  • SU-A-195561 and DE-A-2517026 illustrate junctions of hot blast mains but give no technical details of the refractory structure at the junctions.
  • the object of the invention is to provide a simplified structure at the junction of two hot blast mains and in particular to make fitting a new coupling into a hot blast main less costly because of the greater simplicity.
  • the circular jackets of the first and second hot blast mains are directly coupled to each other without use of one or more intermediate transitional jacket pieces between the first and second mains and the brickwork at the top of both the hot blast mains is formed from shaped bricks which are suspended on the circular jackets of first and second hot blast mains.
  • the coupling joint in accordance with the invention provides the advantage that the steel jackets of the hot blast mains to be coupled together do not need to be replaced by a structure of a flat top piece with other complex shaped intermediate pieces, but that rather it suffices to suspend shaped bricks of the brickwork on for example stainless steel hangers which are suspended on the jackets of the two hot blast mains. With this structure it has been found possible to achieve good stability and good smoothness of the brickwork on the inside of the mains at the junction.
  • Shaped bricks e.g. moulded bricks, which are used in the invention will be of a plurality of different shapes in order to provide the desired shape of the conduits at the junction, and for example in order to compensate for the differing distances which have to be bridged by the suspending hangers as a result of the circular shape of the hot blast mains.
  • the junction in accordance with the invention can also provide the further advantage that, where diameters of the first and the second hot blast main differ from one another, the top sides of the first and second hot blast main do not need to set at the same height. This is indeed required with the junction in accordance with the prior art. For this reason the invention offers significantly broader design possibilities for this kind of junction which in turn makes certain cost benefits feasible.
  • One example could be less mechanical engineering in modifications to existing mains.
  • the shaped bricks be provided with tongue and groove joints at their abutting faces to prevent any relative vertical displacement.
  • a feeding main 1 of a hot blast mains system is shown which is coupled to a discharge main 2 at a junction 3.
  • additional pieces which consist of a flat triangular top plate 4 and curved side pieces 5 which serve as intermediate or transition pieces between the feeder main 1 and the discharge main 2.
  • the hot blast mains 1,2 of Fig. 1 have outer steel jackets and a refractory lining inside the jackets.
  • the intermediate pieces 4,5 thus form coupling pieces joining the outer jackets of the mains 1,2.
  • the intermediate side pieces 5 are curved, and the degree of curvature depends on the diameters of the hot blast mains 1 and 2 coupled together. Where the diameters of the hot blast mains 1 and 2 to be coupled together are the same, this curvature is circular, but where the diameters differ the intermediate side pieces 5 take the shape of a portion of a conic section.
  • Fig. 2 which shows the junction embodying the invention the flat triangular top plate 4 of Fig. 1 is missing, as are the arched intermediate pieces 5.
  • the steel jackets of the feeder main 1 and the discharge main 2 are coupled directly to each other.
  • the circular outer shape of the jackets mains 1 and 2 is not altered by the interposition of intermediate pieces, but the circular jackets join directly into each other.
  • the two mains 1,2 are both horizontal and join at 90°, but other joining angles are possible.
  • Fig. 3 shows a transverse cross-section of the junction of Fig. 2.
  • the plane of the section is transverse to the axis of the main 1, immediately adjacent the junction region and looking in the direction of the feeder main 1 away from the junction but the same view applies also the main 2 at both sides of the junction
  • Fig. 3 shows the steel outer jacket 6 inside which the refractory lining 7 is placed.
  • the refractory bricks are suspended by means of stainless steel hangers 8. These hangers 8 are connected to the steel jacket 6.
  • the bricks so suspended are moulded bricks 9a, b, 10a, b and 11a, b.
  • 3 shows these bricks are of three different shapes, in order to provide the desired inner shape of the refractory lining and to fit to the adjacent bricks.
  • the expert in this art is able to design suspended shaped bricks to complete the top parts of the mains at the junction.
  • the suspended bricks are provided with tongue and grooved structure 12 at their abutting faces to prevent their mutual vertical displacement under the effect of thermal expansion.
  • connection of the moulded bricks of a feeder main 1 and a discharge main 2 of differing diameters may be made, for example by making the feeder main and the discharge main the same height on the top sides of the jackets of both mains (not shown in drawing). However, this is not a prerequisite of the invention.
  • the junction of a feeder main 1 and a discharge main 2 in accordance with the invention does not place any demands on the relative positioning of the mains 1 and 2. This is a significant advantage of the junction in accordance with the invention compared with that in accordance with the current state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Joints Allowing Movement (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Thermal Insulation (AREA)

Claims (4)

  1. Construction de canalisations de vent chaud comprenant une première canalisation (2) de vent chaud et une seconde canalisation (1) de vent chaud qui rejoint la première canalisation (2) au niveau d'une jonction, chaque canalisation s'étendant sensiblement horizontalement dans la région de ladite jonction et comportant un manchon (6) en acier qui est sensiblement circulaire en coupe vue perpendiculairement à l'axe de la canalisation et, à l'intérieur du manchon en acier, un revêtement en briques réfractaires (7, 9, 10, 11) délimitant un passage pour le vent chaud, ces briques réfractaires étant partiellement suspendues audit manchon (6), dans laquelle lesdits manchons (6) en acier de section circulaire desdites première et seconde canalisations (1, 2) sont, au niveau de ladite jonction, couplés directement l'un à l'autre vans que soit intercalée une quelconque pièce intermédiaire de manchon et, au niveau du côté supérieur des première et seconde canalisations (1, 2), ledit revêtement en briques est constitué, au niveau de ladite jonction, par des briques façonnées (9a, b, 10a, b, 11a, b) qui sont suspendues auxdits manchons (6) desdites première et seconde canalisations.
  2. Construction de canalisations de vent chaud selon la revendication 1, dans laquelle lesdites briques façonnées (9a, b, 10a, b, 11a, b) sont assemblées avec des joints (12) à languette et rainure de façon à empêcher leur déplacement vertical relatif.
  3. Construction de canalisations de vent chaud selon la revendication 1 ou la revendication 2, dans laquelle lesdites première et seconde canalisations (1, 2) ont sensiblement le même diamètre.
  4. Jonction d'une première et d'une seconde canalisations (1, 2) de vent chaud qui s'étendent horizontalement et sont circulaires en coupe transversale et dans laquelle chacune desdites canalisations (1, 2) comporte un manchon (6) circulaire en acier et un revêtement en briques réfractaires (7, 9, 10, 11) à l'intérieur dudit manchon en acier, ce revêtement de briques étant partiellement constitué de briques suspendues dudit manchon, dans laquelle lesdits manchons circulaires (6) desdites première et seconde canalisations sont couplés l'un à l'autre au niveau de ladite jonction sans que soit intercalée une quelconque pièce de transition de manchon et ledit revêtement de briques au niveau du côté supérieur des deux première et seconde canalisations est constitué, au niveau de ladite jonction, par des briques façonnées (9a, b, 10a, b, 11a, b) suspendues auxdits manchons (6) circulaires des première et seconde canalisations.
EP19900202611 1989-10-19 1990-10-02 Installation de production de vent chaud avec jonction Revoked EP0423862B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8902589 1989-10-19
NL8902589A NL8902589A (nl) 1989-10-19 1989-10-19 Koppelverbinding hetewindleidingen.

Publications (2)

Publication Number Publication Date
EP0423862A1 EP0423862A1 (fr) 1991-04-24
EP0423862B1 true EP0423862B1 (fr) 1993-09-08

Family

ID=19855482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900202611 Revoked EP0423862B1 (fr) 1989-10-19 1990-10-02 Installation de production de vent chaud avec jonction

Country Status (5)

Country Link
EP (1) EP0423862B1 (fr)
JP (2) JPH03134110A (fr)
CA (1) CA2027045C (fr)
DE (1) DE69003221T2 (fr)
NL (1) NL8902589A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113278754B (zh) * 2021-04-14 2022-04-26 马鞍山钢铁股份有限公司 一种热风炉热风出口结构及其砌筑工艺

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA734561B (en) * 1972-07-19 1974-06-26 Hoogovens Ijmuiden Bv A conduit system for the transport of hot gases,especially hot blast air for a blast furnace,which conduit system includes a connector plug
DE2517026B2 (de) * 1975-04-17 1978-10-19 Centralnyj Nautschno-Issledovatelskij I Proektnyj Institut Stroitelnych Metallokonstrukcij, Moskau Stützvorrichtung zur Halterung einer Heißwindleitung eines Hochofens
JPS5333281A (en) * 1976-09-07 1978-03-29 Nitto Electric Ind Co Ltd Foamed and laminated sheet, tile block for construction and production of the same
DE2926955C2 (de) * 1979-07-04 1984-09-20 Jagenberg-Werke AG, 4000 Düsseldorf Verfahren und Vorrichtung zur Beseitigung von Schaum über dem Spiegel einer Flüssigkeit, insbesondere über flüssigem Füllgut, z.B. Milch
LU82176A1 (fr) * 1980-02-15 1980-05-07 Wurth Anciens Ets Paul Installation de production de vent chaud et procede mis en oeuvre
GB2118672B (en) * 1982-04-22 1986-06-18 Curtiss Wright Corp High temperature lined conduits elbows and tees and method of making same

Also Published As

Publication number Publication date
CA2027045A1 (fr) 1991-04-20
DE69003221D1 (de) 1993-10-14
JPH0731849U (ja) 1995-06-16
NL8902589A (nl) 1991-05-16
EP0423862A1 (fr) 1991-04-24
JPH03134110A (ja) 1991-06-07
CA2027045C (fr) 1996-12-17
DE69003221T2 (de) 1994-02-03

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