US3638929A - Discovery in apparatus for cooling a wall surface - Google Patents

Discovery in apparatus for cooling a wall surface Download PDF

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Publication number
US3638929A
US3638929A US36084A US3638929DA US3638929A US 3638929 A US3638929 A US 3638929A US 36084 A US36084 A US 36084A US 3638929D A US3638929D A US 3638929DA US 3638929 A US3638929 A US 3638929A
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United States
Prior art keywords
cooling
enclosure
helicoidal
define
wall
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Expired - Lifetime
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US36084A
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English (en)
Inventor
Paul Brulhet
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SOC WENDEL-SIDELOR SA
Wendel Sidelor SA
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Wendel Sidelor SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/057—Selenium or tellurium; Compounds thereof
    • B01J27/0576—Tellurium; Compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/026—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled and formed by bent members, e.g. plates, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/004—Cooling of furnaces the cooling medium passing a waterbox
    • F27D2009/0043—Insert type waterbox, e.g. cylindrical or flat type

Definitions

  • the cooling means comprises [51 1 1m. (:1.
  • the cooling means is adapted for insertion in a blast furnace casing or cooling box to define a circu- [56] References Cited lation passage for the cooling fluid, said passage including a helical outer supply portion arranged concentrically about an UNITED STATES PATENTS inner return P 3,l75,8l7 3/1965 Smith et al.
  • This invention relates to a device for cooling an enclosure subjected to high'tem'pe ratures. More particularly, the present invention relates to means for cooling elongated enclosures, such as blast furnace tuyeres and cooling boxes or cases for blast furnaces.
  • Blast furnace tuyeres and cooling boxes normally extend into the interior of the blast furnace where a high temperature prevails.
  • the shape and position of these two members thus present similarities, although their functions are different.
  • the tuyeres are slightly conical and serve to conduct the airblast and possibly other injections, whereas the cooling cases have various cross sections, generally rectangular. Tuyeres and cases are traversed by water on their inner surfaces. In both cases, the idea is to cool a high-temperature enclosure.
  • these tuyeres are of copper and are subjected to temperatures on the order of l,700-2,000 C., their lifetime being only on the order of 150-300 days.
  • the hot-blast temperatures have been increased in recent years from 700 C. to l,000-1,l00 C., and now the temperatures are heading toward l,300-l,400 C.
  • injections of liquid or gaseous hydrocarbons furthermore tend to increase the temperatures'to which the tuyeres are subjected.
  • the heat flow to be absorbed by the tuyere walls, both on the outside and on the inside, thus becomes greater all the time and this results in more and more of a reduction in the lifetime of the tuyeres which are very expensivemembers.
  • the primary object of the present invention is to remedy the above-mentioned inconveniences by eliminating the causes producing the calefaction phenomenon, by creating on the wall to be cooled sufficient circulation speeds and by making these speeds uniform and easily controllable in each transversal section of the circuit.
  • the invention relates to a cooling boxes or device for an enclosure subjected to high temperatures, for example, blast furnace tuyeres and cooling cases.
  • the invention is characterized by the fact that it involves at least one cooling conduit in a serpentine form against the wall of the enclosure to be cooled from the coldest point up to the hottest point, said conduit being connected to return via a spiral conduit.
  • the present invention includes one or more of the following features:
  • a. transverse cross section of the conduits presents a progressively variable area, said area diminishing from the entry of the cooling fluid toward the hottest point of the enclosure and increasing from said point toward the outlet of the cooling fluid;
  • the device is shaped in such a way that the speed of the fine water streams is essentially uniform in each cross section of the cooling conduits;
  • the device is independentof or separate from the enclosure to be cooled and whereby the cooling device can be introllable, and-a great disparity existed between the speeds of serted and withdrawn, as desired;
  • the device is made of any material that is inert with respect to the cooling fluid used;
  • the device is made of a substance or a metal that is electronegative with respect to the metal of the enclosure to be cooled;
  • the device is so shaped as to be introduced into or withdrawn from the double wall of the blast furnace pipe;
  • the device includes grooves on its outer and inner lateral surfaces that cooperate with the inner face of the outside wall of the tuyere to define a first helicoidal conduit and with the inside of the inner face wall of said tuyere to define a second helicoidal conduit, the two above conduits having an inverse pitch, the connection between the two conduits being accomplished in the region of the nose of the tuyere by means of a spiral groove;
  • the device is so shaped as to be capable of being introduced into a blast furnace cooling box or case and withdrawn from it if necessary;
  • the device presents a groove with a generally helicoidal form on the outside and a drill hole on the inside, a connection in the form of a spiral being provided on the side of the bottom of the cooling case between the generally helicoidal groove and the drill hole.
  • FIG. 1 is an axial cross section view of a tuyere equipped with a conventional cooling device
  • FIG. 2 is a cross section along IIII in FIG. 1;
  • FIG. 3 is an axial cross section of a tuyere equipped with a cooling device according to the present invention
  • FIG. 4 is a cross section along IV-lV in FIG. 3;
  • FIG. Si is a cross section along VV in FIG. 3;
  • FIG. 6 is an axial schematic cross section of a cooling box according to the invention.
  • FIG. 7 is a cross section along VII-VII in FIG. 6.
  • the tuyere is provided with conventional cooling means and includes an outer wall I an inner wall 2, both generally of copper, said walls being connected at the nose end 3 to define a jacket for the circulation of the water.
  • Walls 1 and 2 are integral with the base portion 4 in which are secured a pair of supply tubes 5. Consequently, a turbulent circulation is produced in the region of the nose, the water following the trajectory of the arrows f and being evacuated through an opening 7.
  • this known device is not at all efficient. While similar known devices (for example, devices with concentric circulation in thin layers, or with internal circulation in the interior of a massive piece with great thickness) have produced better results, nevertheless they are still quite unsatisfactory in operation.
  • the device according to the present invention as represented in FIG. 3 is placed inside the water jacket. More particularly, the tuyere includes outer and inner walls 1 and 2', respectively, connected by the annular transverse wall defined by nose portion 3 and soldered on the base portion 4'.
  • This base made of steel or copper, is used for attachment on the jacket or shell 8 of the blast furnace and does not require any major cooling because it is exposed to very little heat.
  • nose 3' and wall 1 are subjected to very high temperatures ranges, the maximum temperature being at the nose portion where the blast comes out into the blast furnace.
  • a cooling member 9 which cooperates with the inner face of the outside wall I to define a first helicoidal conduit 10 for the cross-sectional area of which diminishes gradually from the base portion to the nose portion.
  • the cooling member 9 cooperates with the inner face of internal wall 2 to define a second helicoidal conduit 11 whose pitch is the inverse of that of the first conduit and whose cross-sectional area diminishes in the same direction as that of the first conduit.
  • the connection between the two conduits is accomplished in the region of the nose by means ofa spiral groove 12 which we can see in FIG. 5.
  • 3 and 4 illustrate the pair of water inlets 13 that communicate with the base end of the internal helicoidal groove I1, and the pair of water outlets I4 that communicate with the base end of the outer helicoidal groove 10.
  • the inlets and outlets are separated by the screen or divider 15 formed in the base.
  • the water enters the base through openings 13 and first of all penetrates into a region 16 constituted between the screen and the inside wall of the base. It thus enters the internal helicoidal groove and progresses up to the nose end of the tuyere. From there, it is conducted by spiral groove 12 up to helicoidal groove 10 in order to reach region 17 between the screen and the outside wall of the base from whence it is evacuated via outlets 14 toward the outside.
  • the temperature which we find at the outlet represents only a temperature included between that of the liquid having been in contact with the outside wall of the water jacket and that of the liquid which has never been in contact with that outside wall. Thus the temperature is not representative of the temperature of the outside wall of the water jacket.
  • the water output temperature is representative of the temperature on the inner face surface of the outside wall of the water jacket, and thus the flow rate may be regulated in such a way as to adapt the speeds at any moment to the heat flow to be evacuated, thereby obtaining the exchange of heat by convection while avoiding calefaction. Furthermore, the centrifugal effect due to the helicoidal form of the conduit promotes the separation of the steam bubbles.
  • the device described above which in summary is a regulator and, in certain places, an accelerator of circulation, permits simple transformation of conventional tuyeres into tuyeres according to the invention, since it suffices to insert the cooling device into the water jackets of the tuyeres.
  • This device can be made up of different materials, such as metal, rubber, plastics, etc., provided these materials are not deteriorated by the cooling liquid or by the temperatures and the operating pressures. on the other hand, since the device required relatively little pressure to obtain large circulation speeds, one can arrange several tuyeres in series on the same water supply line.
  • the device can also be applied to blast furnace cooling boxes or cases which are subjected to temperatures that increase as they enter more deeply into the furnace.
  • the cooling box includes an envelope 18 having the general form of a parallelepiped.
  • This envelope is attached in a manner not shown (for example, by welding) to the shell 19 of a blast furnace.
  • a removable cooling means 20 Inside the envelope there is provided a removable cooling means 20 whose outside portions are so shaped as to adapt with a technological minimum clearance to the inside of cooling box 18.
  • This device is attached to the case in a conventional manner to compress O-ring 21 to assure a watertight seal.
  • the outside surface is so shaped as to presentwhen it is in position in the cooling box-a helicoidal conduit 22 whose cross-sectional area decreases regularly from the entrance at 23 up to the end at the bottom of the cooling box.
  • the end of the cooling means 20 cooperates with the adjacent end wall 18' to define a conduit of spiral form, as indicated at 24 in FIG. 7.
  • the water successively increases in speed toward i the bottom, is directed inwardly toward the center of the bottom of the cooling box, and isexhausted via a central drill hole 25 whose section grows progressively up to outlet 26.
  • cooling boxes are often made of steel.
  • the accelerator described above can be advantageously built of a metal that is electronegative with respect to iron, which assures the cooling box of galvanic protection, thus preventing corrosion by the water on the steel wall.
  • the surface of this wall always remains clean and retains its initial heat transfer qualities.
  • H0. 7 Although the inside cross section of the device is illustrated in H0. 7 as being circular, it is obvious that other shapes may be provided in conformance with the configuration of the cooling box. The efficiency of the device would obviously be greater if the outside form of the box were circular because the thickness of the envelope would then be uniform.
  • any number of devices according to the invention may be placed in these enclosures.
  • Apparatus for cooling a hollow enclosure having longitudinal and end wall portions the outer surfaces of which are subjected to high temperature including a separate cooling body (9, defining supply and return conduits for conducting cooling fluid longitudinally of said enclosure, the cross sections of said conduits progressively diminishing from the coolest to the hottest and progressively increasing from the hottest to the coolest wall portions of said'enclosure, respectively, said separate cooling body cooperating with the inner surface of the enclosure longitudinal wall portion to define in one of said supply and return conduits a helicoidal cooling passage; the improvement wherein said separate cooling body contains on a peripheral longitudinal surface thereof a continuous longitudinal groove that cooperates with the adjacent longitudinal wall portion of said enclosure to define said helicoidal cooling passage (10, ll, 22);
  • said separate cooling body containing on an end surface thereof a spiral groove that cooperates with the adjacent end wall portion of said enclosure to define a spiral cooling passage (12, 24) that connects said supply and return conduits.
  • said enclosure comprises a hollow cylindrical cooling box (18) closed at one end, said separate cooling body being adapted for insertion within and removal from the chamber defined within said cooling box.
  • said separate cooling body contains a central bore defining a central condu it (25), said body containing on its outer periphery a helicoidal groove (22) that cooperates with the adjacent longitudinal wall surface of said cooling box to define said helicoidal cooling passage, said body containing at one end a spiral groove (24) that cooperates with the adjacent end wall of said cooling box to define said spiral cooling passage.
  • said enclosure comprises a tuyere including spaced concentric generally cylindrical outer (1') and inner (2) walls, and a transverse wall (3) connected'between said walls at one end to define an annular jacket recess;
  • said separate cooling body being annular and concentrically arranged within said jacket recess, said body containing on its outer and inner longitudinal peripheries helicoidal grooves (l0, ll) of inverse pitch, respectively, one groove cooperating with the adjacent longitudinal surface of the corresponding cylindrical wall to define said helicoidal cooling passage, the other groove cooperating with the adjacent longitudinal surface of the other cylindrical wall to define a further helicoidal cooling passage;
  • said separate cooling body containing at one end a spiral groove (12) that cooperates with the adjacent end wall of said enclosure to define said spiral cooling passage, said spiral cooling passage being in communication at each end with said helicoidal cooling passages.
  • Fluid-cooled enclosure means adapted for insertion at one end within a blast furnace or the like, comprising an enclosure (1', 18) having at opposite ends a base end adapted for connection with a fixed support, and a nose end (3', 18') adapted to extend within the blast furnace, respectively, whereby the external longitudinal and nose end wall surfaces of said enclosure are subjected to high temperature, said enclosure body containing a chamber extending longitudinally from said base end toward said nose end;
  • said enclosure is generally tubular and contains a central through passage
  • said chamber is generally annular to define spaced concentrically arranged outer (1) and inner (2) wall portions of said enclosure
  • said cooling body is annular and concentrically arranged between said inner and outer wall portions, said cooling body including on its inner periphery a continuous helicoidal second groove that cooperates with the adjacent surface of said enclosure inner wall portion to define a further helicoidal cooling passage l l) in communication at one end with the other end of said spiral cooling passage.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Blast Furnaces (AREA)
US36084A 1969-05-14 1970-05-11 Discovery in apparatus for cooling a wall surface Expired - Lifetime US3638929A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6915586A FR2044266A5 (fr) 1969-05-14 1969-05-14

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US3638929A true US3638929A (en) 1972-02-01

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US36084A Expired - Lifetime US3638929A (en) 1969-05-14 1970-05-11 Discovery in apparatus for cooling a wall surface

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US (1) US3638929A (fr)
JP (1) JPS508548B1 (fr)
AT (1) AT322586B (fr)
BE (1) BE750398A (fr)
CA (1) CA931748A (fr)
CS (1) CS190312B2 (fr)
DE (1) DE2022388B2 (fr)
FR (1) FR2044266A5 (fr)
GB (1) GB1310552A (fr)
LU (1) LU60863A1 (fr)
NL (1) NL151135B (fr)
SE (1) SE360110B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826479A (en) * 1973-02-16 1974-07-30 Kurimoto Ltd Tuyere for a melting furnace
AU576270B2 (en) * 1984-11-07 1988-08-18 Rhone-Poulenc Specialites Chimiques Making metal moulds by spraying metal onto filled silicone elastomer pattern
US5795446A (en) * 1994-08-17 1998-08-18 Kirschmann; Eduard Method and equipment for heat-of-vaporization transfer
LU90644B1 (de) * 2000-09-26 2002-03-27 Wurth Paul Sa Ofenwandkuehlung mit Kuehlplatten
US20060124007A1 (en) * 2004-11-19 2006-06-15 Eduard Hoffmann Roll of a printing press having a filling of a foamed material
CN103476969A (zh) * 2011-04-08 2013-12-25 Bhp比利顿铝技术有限公司 用于在火法冶金工艺容器中使用的热交换元件
EP3480543A3 (fr) * 2017-11-03 2019-08-21 Berry Metal Company Boîtier de brûleur
US11300291B2 (en) 2016-11-03 2022-04-12 Berry Metal Company Burner housing

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479852A2 (fr) * 1980-04-02 1981-10-09 Touze Francois Perfectionnements aux dispositifs d'echanges thermiques a circulation de liquide pour le refroidissement des parois des hauts fourneaux
FR2430584A1 (fr) * 1978-07-05 1980-02-01 Solmer Boite de refroidiss
JPS5552097U (fr) * 1978-10-04 1980-04-07
DE3007202A1 (de) * 1980-02-26 1981-09-10 Linde Ag, 6200 Wiesbaden Methanol-reaktor
JP2751588B2 (ja) * 1990-07-10 1998-05-18 忠弘 大見 液冷式冷却装置
EP1380804A1 (fr) * 2002-07-10 2004-01-14 Von Roll Umwelttechnik AG Dispositif de refroidissement pour un four à fusion, four à fusion avec ce dispositif de refroidissement et procédé de refroidissement d'un four à fusion
US7483471B2 (en) * 2006-02-24 2009-01-27 Process Technology International Cooling device for use in an electric arc furnace
EP3480521A1 (fr) * 2017-11-03 2019-05-08 Berry Metal Company Brûleur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US265156A (en) * 1882-09-26 Tuyere
US2735409A (en) * 1956-02-21 Blast nozzles for melting furnaces
US3175817A (en) * 1960-11-28 1965-03-30 Union Carbide Corp Burner apparatus for refining metals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US265156A (en) * 1882-09-26 Tuyere
US2735409A (en) * 1956-02-21 Blast nozzles for melting furnaces
US3175817A (en) * 1960-11-28 1965-03-30 Union Carbide Corp Burner apparatus for refining metals

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826479A (en) * 1973-02-16 1974-07-30 Kurimoto Ltd Tuyere for a melting furnace
AU576270B2 (en) * 1984-11-07 1988-08-18 Rhone-Poulenc Specialites Chimiques Making metal moulds by spraying metal onto filled silicone elastomer pattern
US5795446A (en) * 1994-08-17 1998-08-18 Kirschmann; Eduard Method and equipment for heat-of-vaporization transfer
LU90644B1 (de) * 2000-09-26 2002-03-27 Wurth Paul Sa Ofenwandkuehlung mit Kuehlplatten
US20060124007A1 (en) * 2004-11-19 2006-06-15 Eduard Hoffmann Roll of a printing press having a filling of a foamed material
CN103476969A (zh) * 2011-04-08 2013-12-25 Bhp比利顿铝技术有限公司 用于在火法冶金工艺容器中使用的热交换元件
US11300291B2 (en) 2016-11-03 2022-04-12 Berry Metal Company Burner housing
EP3480543A3 (fr) * 2017-11-03 2019-08-21 Berry Metal Company Boîtier de brûleur

Also Published As

Publication number Publication date
DE2022388B2 (de) 1973-02-08
AT322586B (de) 1975-05-26
GB1310552A (en) 1973-03-21
NL7006937A (fr) 1970-11-17
LU60863A1 (fr) 1970-07-07
BE750398A (fr) 1970-10-16
CS190312B2 (en) 1979-05-31
JPS508548B1 (fr) 1975-04-04
NL151135B (nl) 1976-10-15
SE360110B (fr) 1973-09-17
FR2044266A5 (fr) 1971-02-19
CA931748A (en) 1973-08-14
DE2022388A1 (de) 1970-11-19

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