US3845813A - Water cooling of wall surfaces - Google Patents

Water cooling of wall surfaces Download PDF

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Publication number
US3845813A
US3845813A US00364722A US36472273A US3845813A US 3845813 A US3845813 A US 3845813A US 00364722 A US00364722 A US 00364722A US 36472273 A US36472273 A US 36472273A US 3845813 A US3845813 A US 3845813A
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US
United States
Prior art keywords
water
wall surface
wall
nozzles
supply container
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.)
Expired - Lifetime
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US00364722A
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English (en)
Inventor
Georges Bougard
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Holcim Belgique SA
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Individual
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Filing date
Publication date
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Publication of US3845813A publication Critical patent/US3845813A/en
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Classifications

    • 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
    • C21C5/38—Removal of waste gases or dust
    • C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/20—Apparatus in which the axial direction of the vortex is reversed with heating or cooling, e.g. quenching, means
    • 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
    • F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • ABSTRACT The outer surface of a conical wall of a cyclone separator is cooled by collecting a supply of cooling water at a regulated constant pressure, delivering the water under this pressure in a series of water jets to the wall surface by an annular array of springling nozzles circling the surface, the distance of the nozzle outlets from the wall surface being so adjusted that the jets impinge upon the wall and spread out thereon to form an adherent sheet of water, and adjacent water jets being so spaced that the sheets of water are joined into a single, uninterrupted water curtain is permitted to flow down along the wall surface and the spent and warm water is collected at a level of the wall surface where the water temperature becomes too high for moved.
  • the present invention relates to an improved process and apparatus for cooling the conical walls of a cyclone separator, such as used, for instance, in the manufacture of cement.
  • a series of superposed cooling jackets are mounted on the conical separator wall and surround the same, a container of cold water is mounted to feed water to the lowest one of the jackets at the bottom thereof, the water fed into the chamber definedby the lowest jacket rises upwards in the chamber and is fed therefrom through a connecting conduit into the next higher jacket wherewithin it rises again to be finally removed therefrom into a water collecting vessel, whence it is evacuated.
  • This cooling system has various disadvantages among which are the formation of foul puddles of water in the pockets of the jackets at the bottom thereof and scale deposits on the walls of the chambers defined by the jackets.
  • Another disadvantage is the poor distribution of the cooling water over the wall surface to be cooled. in effect, water currents are formed between the inlet and the outlet of the water into the jacket chambers. Therefore, relatively warm zones separate adjacent cool zones of water currents in these chambers. This reduces the cooling efficiency.
  • jacket walls are subjected to considerable water pressure in view of the height of the water column produced in such a cooling system.
  • This static pressure may cause the walls to be deformed or even to break.
  • a breakage occurs in a cyclone separator wherein cement is treated, for instance, large amounts of cement would be lost.
  • This invention has the primary object to overcome these and other disadvantages and to provide a new and useful process and apparatus for cooling the conical walls of cyclone separators.
  • FIG. 1 illustrates a conventional cooling system for a conical wall of a cyclone separator
  • FIG. 2 is a similar side elevational view of such a system according to this invention.
  • the cyclone separator is illustrated by conical wall 1 whose outer surface is to be cooled.
  • a series of jackets 2,2 are mounted on wall 1 to surround the outer surface thereof.
  • a toroidal container 3 is mounted concentrically around the conical separator wall and receives cold water under pressure, the container 3 being mounted adjacent the base or bottom of the lowest jacket 2 and cooling water being fed from container 3 into the cooling chamber defined by jacket 2 through a connecting conduit.
  • a toroidal. container 9 is mounted concentrically around the upper edge of conical separator wall 1 to be cooled and receives cooling water through conduit 10.
  • the water pressure in container 9 is regulated so that it remains at a predetermined, constant level by control valve 11 in conduit 10.
  • a like container 9 is similarly mounted around about the middle of wall 1 for cooling the lower half thereof.
  • Container 9 receives cooling water through conduit 10 and the water pressure in container 9 is similarly controlled by valve 11.
  • the cooling water for both containers comes from a common supply 18.
  • the water containers 9, 9 carry a series of sprinkling nozzles 12 arrayed annularly around the wall 1.
  • the nozzles comprise telescopically mounted sleeves 13 so that the distance 14 between the outlets of sleeves l3, i.e., of the nozzles, and wall 1 may be adjusted. This adjustment is so selected that the resultant water jets from the nozzles impinge upon the outer surface. of wall 1 and spread out thereon to form a sheet of water.
  • the spacing between adjacent nozzles in the annular array is so regulated that the sheets of water produced by the nozzles are joined into a single, uninterrupted sheet on the wall. The uninterrupted sheet of water thus formed will flow down along the wall as a cooling curtain of water.
  • annular trough 15,15 is mounted to surround the wall at a level at which the water temperature becomes too high for cooling the wall.
  • the warm water is collected in these troughs, a removable annular shield 17,17 beingmounted on a respective one of the troughs.
  • An overflow pipe 16 is mounted on top of the toroidal water containers whence the cooling water is fed under constant pressure to nozzles 12.
  • Cooling water is delivered from main 18 through conduits 10,10 into containers 9,9, the water pressure being so adjusted by valves ll, 11 that the overflow pipes 16 on the-containers permit a small amount of water to escape. In this manner, a relatively low water pressure is established in containers 9, 9'. Under this low, constant pressure, the cooling water is delivered through nozzles 12 and nozzle sleeves 13 as water jets impinging upon the outer surface of wall 1. The distance 14 between the nozzle outlets and the wall surface is regulated so that the ejected water will cling to the wall surface and spread out thereon in a sheet.
  • the lateral distances between the nozzles surrounding the wall in an annular array are so selected that the sheets of water produced by each jet will join into an uninterrupted curtain of water flowing down the wall surface and cooling it.
  • the water is received in troughs 15, 15 at a point where its temperature becomes too high to operate as an effective cooling medium.
  • the warm water collected in the troughs is removed therefrom through evacuating pipes 19 and 20, the water from pipe 19 flowing into trough 15 at the bottom of the conical wall whence the entire spent water is removed through pipe 20.
  • the pressure conditions in the water containers 9,9 are so controlled that a laminar flow of water will emanate from nozzle sleeves 13.
  • a cooling system of the type illustrated in FIG. 2 will eliminate the disadvantages described in connection with the convention system of FIG. 1, the collection of foul puddles of water in troughs 15,15 and of scale on wall 1 being considerably reduced and, when formed, being readily removable by removing the shields 17 to have access to the fouled areas. Furthermore, the distribution of the cooling water over the surface of wall 1 is greatly improved since the water forms an uninterrupted curtain running down the wall surface. Finally, there is no static pressure exerted upon the separator wall by the cooling water.
  • An apparatus for cooling the outer surface of a conical wall of a cyclone separator, the wall having an upper edge comprising 1. a supply container of cooling water mounted adjacent the upper wall edge and laterally spaced therefrom,
  • an overflow pipe mounted on top of the supply container, (4) an array of sprinkling nozzles oriented towards the wall surface and mounted to deliver the water from the supply container under a constant pressure through nozzle outlets in a series of water jets to the wall surface, the water pressure at the level of the sprinkling nozzles being determined by the height of the water column between said level and the level of the overflow pipe,
  • the means for adjusting the distance of the nozzle outlets from the wall surface comprises an outlet sleeve telescopingly mounted on each of the nozzles.
  • the array of sprinkling nozzles comprises an annularly arranged series of said nozzles spaced apart a distance regulated to form the water jets into an uninterrupted curtain of water on the wall surface
  • the means for collecting the water comprises an annular trough circling the wall surface, and further comprising a removable shield mounted between the trough and the supply container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
US00364722A 1973-01-10 1973-05-29 Water cooling of wall surfaces Expired - Lifetime US3845813A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE793816 1973-01-10
BE126261 1973-01-10

Publications (1)

Publication Number Publication Date
US3845813A true US3845813A (en) 1974-11-05

Family

ID=25647625

Family Applications (1)

Application Number Title Priority Date Filing Date
US00364722A Expired - Lifetime US3845813A (en) 1973-01-10 1973-05-29 Water cooling of wall surfaces

Country Status (6)

Country Link
US (1) US3845813A (fr)
BE (1) BE793816A (fr)
DE (1) DE2400520A1 (fr)
FR (1) FR2213108B1 (fr)
GB (1) GB1397892A (fr)
LU (1) LU66894A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894726A (en) * 1974-10-29 1975-07-15 United States Steel Corp Cascade water cooler aerator-multiplyer
EP0044513A1 (fr) * 1980-07-19 1982-01-27 Fuchs Systemtechnik GmbH Procédé et dispositif pour le refroidissement des parois d'un four métallurgique, en particulier d'un four à arc électrique
US5007970A (en) * 1987-05-02 1991-04-16 Schmidt'sche Heissdampf Gmbh Process for the cleaning of steam generator heating surfaces
US6176901B1 (en) * 1997-10-24 2001-01-23 Leybold Systems Gmbh Dust precipitator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514480A1 (fr) * 1981-10-13 1983-04-15 Bechet Leon Procede de transfert thermique a travers une paroi

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US349513A (en) * 1886-09-21 James l
US2776168A (en) * 1954-09-20 1957-01-01 Rufin L Schweda Extension and telescoping attachment for nozzle of showers
US2937141A (en) * 1957-09-10 1960-05-17 Gulf Research Development Co Separating volatile components from a heavy oil by means of a venturi tube
US3030095A (en) * 1957-11-04 1962-04-17 Forges & Acieries De Dilling S Open cooling boxes of metallurgical furnaces, especially of blast furnaces
US3157228A (en) * 1961-09-01 1964-11-17 Hazen Engineering Company Apparatus for cooling metal recuperator gases
US3586304A (en) * 1969-12-08 1971-06-22 Mckee & Co Arthur G Furnace cooling system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US349513A (en) * 1886-09-21 James l
US2776168A (en) * 1954-09-20 1957-01-01 Rufin L Schweda Extension and telescoping attachment for nozzle of showers
US2937141A (en) * 1957-09-10 1960-05-17 Gulf Research Development Co Separating volatile components from a heavy oil by means of a venturi tube
US3030095A (en) * 1957-11-04 1962-04-17 Forges & Acieries De Dilling S Open cooling boxes of metallurgical furnaces, especially of blast furnaces
US3157228A (en) * 1961-09-01 1964-11-17 Hazen Engineering Company Apparatus for cooling metal recuperator gases
US3586304A (en) * 1969-12-08 1971-06-22 Mckee & Co Arthur G Furnace cooling system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894726A (en) * 1974-10-29 1975-07-15 United States Steel Corp Cascade water cooler aerator-multiplyer
EP0044513A1 (fr) * 1980-07-19 1982-01-27 Fuchs Systemtechnik GmbH Procédé et dispositif pour le refroidissement des parois d'un four métallurgique, en particulier d'un four à arc électrique
US5007970A (en) * 1987-05-02 1991-04-16 Schmidt'sche Heissdampf Gmbh Process for the cleaning of steam generator heating surfaces
US6176901B1 (en) * 1997-10-24 2001-01-23 Leybold Systems Gmbh Dust precipitator

Also Published As

Publication number Publication date
FR2213108A1 (fr) 1974-08-02
GB1397892A (en) 1975-06-18
BE793816A (fr) 1973-05-02
FR2213108B1 (fr) 1978-03-03
DE2400520A1 (de) 1974-07-18
LU66894A1 (fr) 1973-03-26

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