US3862015A - Quenching tower for quenching coke and similar materials, and a quenching device as part of such a tower - Google Patents

Quenching tower for quenching coke and similar materials, and a quenching device as part of such a tower Download PDF

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Publication number
US3862015A
US3862015A US218418A US21841872A US3862015A US 3862015 A US3862015 A US 3862015A US 218418 A US218418 A US 218418A US 21841872 A US21841872 A US 21841872A US 3862015 A US3862015 A US 3862015A
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United States
Prior art keywords
quenching
coke
tower
water
ducts
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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
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US218418A
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English (en)
Inventor
Johannes H W Ouwerkerk
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Koninklijke Nederlandsche Hoogovens en Staalfabrieken NV
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Koninklijke Hoogovens En Staal
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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
    • F28F25/00—Component parts of trickle coolers
    • F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
    • F28F25/06—Spray nozzles or spray pipes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B39/00—Cooling or quenching coke
    • C10B39/04—Wet quenching
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2713—Siphons
    • Y10T137/2774—Periodic or accumulation responsive discharge

Definitions

  • the syphon tubes may have inside diameters of about 17 mm, and mouth opening diameters of about 14 mm located about 1.5 meters above the coke surface and spaced about 20 cm, substantially uniformly above the entire surface of the coke bed.
  • the arrangement improves the uniformity and efficiency of quenching by reducing deflection, carry-over and evaporation of quenching water by the rising steam in the region above the coke bed and assures a more uniform distribution of water over the mass of coke, so that more of the water reaches and is uniformly distributed on the coke bed to be vaporized in contact therewith.
  • the invention relates to the quenching device used in such a quenching tower.
  • the hot coke from the coke oven batteries is first loaded onto special rail cars, the so-called quenching cars, which thereafter are moved on rails into the lower part of a stack-shaped tower.
  • a quantity of water is sprayed onto the coke, said quantity being sufficient to cool the coke down entirely.
  • About half of the water sprayed onto the coke is vaporized in the process, the other half being discharged by passing through the coke and through the bottom of the quenching car.
  • the car is moved out of the quenching tower and the quenched coke is discharged onto a sloping surface. From this slope the coke is discharged, usually by a belt conveyor system.
  • the spraying system for the quenching water to be sprayed onto the coke often consists of a number of downwardly directed spray nozzles, spraying water in a conical jet or spray onto the hot coke. It is, however, also known to supply the quenching water through a system of tubes extending above the quenching car, from which tubes the water is sprayed through simple openings in the wall thereof onto the coke.
  • the quality of the quenched coke depends on the speed of quenching. Quenching periods of 110 sec. per charge or more are usual, but it has appeared that a considerable improvement of quality is obtainable if the quenching time can be shortened to about 1 minute or less.
  • a further advantage of a shorter quenching time consists in that the entire cycle of loading the coke onto the quenching car, the rolling of the cars to the quenching tower, the quenching, the rolling of the cars to the sloping surface, the discharging of the coke onto said surface and the moving of the cars back to the coke oven battery can be shortened.
  • the quenching system is embodied as a set of syphon tubes arranged in a regular pattern above the space in the tower, into which the cars are moved, said pattern extending over the entire upper surface of the charge of material to be quenched on said cars, the said system of syphon tubes being connected to a supply system for water.
  • the pitch of the pattern is less than 25 cm and preferably about cm. With a pitch of the pattern, decreasing below 20 cm, the water distribution in practice will improve only very slightly with smaller pitch, whereas the capital investment for the quenching system will increase considerably.
  • the syphon tubes in different manners and to connect them in different manners to a supply system for quenching water. It is moreover possible to connect such tubes to a system of mutually connected concentric annular ducts or to a spiral shape supply duct. It is also possible to connect the syphon tubes to supply pipes, which extend in longitudinal direction of the quenching tower. It has appeared, however, that such solutions in practice are not the best solutions possible, mainly because they have to be heavy in order to be sufficiently rigid.
  • an arrangement is preferred, in which the syphon tubes are mounted onto a grid of ducts extending transversely to the longitudinal direction of the tower, said transverse ducts being connected to main supply tubes extending outside the tower.
  • the present invention not only relates to a quenching tower, but also to a quenching device to be used in such a tower.
  • This quenching device comprises a set of syphon tubes positioned in a regular pattern, as described above.
  • Such a quenching device can be mounted simply in existing quenching towers or can even, for particular applications, be used without any quenching tower at all.
  • FIG. 1 shows diagrammatically a quenching tower in longitudinal vertical section.
  • FIG. 2 is a transverse vertical section along the line II-II in FIG. 1.
  • FIG. 3 is a view at a considerably larger scale of part of the detail surrounded by a dotted line and indicated by III in FIG. 1.
  • FIG. 4 is a view from above of the detail of FIG. 3.
  • FIG. 5 is a same detail as FIG. 3, but in a somewhat different embodiment.
  • reference numeral 1 indicates the lower part of a quenching tower shown only diagrammatically. At the upper end this tower has an upwardly converging part 2.
  • This tower is of a structure known per se, so that it need not be described in detail. It is possible to roll a quenching car 3 in longitudinal direction into and out of the lower part of said tower on rails, so that it becomes positioned between two side walls 8 and 9 (FIG. 2). Above the open top surface of the quenching car, at about 1.5 m above the upper edge thereof, there is a grid of ducts 4, each supported by brackets on the upper edge of the walls 8 and 9. The ducts 4 are disconnectably connected to main supply ducts 5 and 6. After being disconnected the ducts 4 can be removed in their longitudinal direction from the tower, so as to be replaced by other ducts.
  • syphon tubes 7 Onto the ducts 4 a large number of syphon tubes 7 is mounted.
  • FIG. 3 two of the ducts 4 are shown with syphon tubes 7 from detail III in FIG. -1 at an enlarged scale.
  • FIG. 4 this detail is shown in a view from above.
  • the syphon tubes 7 extend from the upper edge of the ducts 4 first vertically upwardly and thereafter they bend outwardly and downwardly into the vertical downward direction alongside the duct 4.
  • Each set of four openings of the syphon ducts forms a substantially square pattern with a side of the square of 20 cm.
  • the total field of such openings of the syphon tubes covers the entire upper surface of the quenching car between its upstanding edges and sidewalls.
  • another regular pattern is also possible, for instance according to equilateral triangles, but squares seem to be preferable.
  • FIG. 5 shows an alternative structure in which it is possible to have the syphon tubes 7 with their openings cover an accurately square pattern. However, in this case it is necessary to apply connecting points of these syphon tubes 7 to the ducts 4, which are at an angular distance along the periphery of said ducts. It will be clear that several other embodiments and connecting points of the syphon tubes with respect to the ducts 4 are possible.
  • An advantageous arrangement is also one in which the vertical planes through each syphon duct are not exactly perpendicular to the longitudinal axes of the ducts 4, but are at a small angle thereto, so that it is possible to have the openings of the syphon tubes cover exactly a pattern of squares with their connections to the ducts 4 being exactly along the upper line of the ducts 4 as in FIG. 3.
  • a standpipe 10 at one or both ends of each duct 4.
  • Such a standpipe 10, open at its top, is shown in the right part of FIG. 2.
  • the syphon action of the syphon tubes will go on syphoning water from the ducts 4 during a very short period and thereupon air will be able to flow into the ducts 4 through the standpipe(s) 10, so that this air in the ducts 4 interrupts the syphon action and terminates the water discharge through the syphon tubes 7.
  • This also makes the system ready for a new spraying cycle for a following mass of coke in a very short time as only a very small quantity of water has to be supplied to have the system operate uniformly again.
  • a quenching tower for receiving in the lower part thereof a quenching car loaded with coke or like material which is to be quenched therein, and having means for applying quenching water to the surface of the coke to effect a quenching thereof
  • means for applying quenching water which comprises syphon tube means mounted in said tower above the space in which the car will be positioned for delivering the quenching water vertically downwardly in a multiplicity of narrowly restricted, compact jets of water in an essentially laminar pattern so that the water will be distributed uniformly over the entire layer of coke in the car, the pitch of said jets in said pattern being less than 25 cm between adjacent jets, said syphon tube means being mounted onto a grid of ducts extending transversely to the longitudinal direction of the tower with their respective delivery portions extending vertically downwardly, said transversely extending ducts being connected to the main tubes extending outside the tower.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US218418A 1971-01-28 1972-01-17 Quenching tower for quenching coke and similar materials, and a quenching device as part of such a tower Expired - Lifetime US3862015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7101162.A NL156436B (nl) 1971-01-28 1971-01-28 Blustoren voor het natblussen van cokes, voorzien van een uit een buizenrooster bestaand watersproeisysteem.

Publications (1)

Publication Number Publication Date
US3862015A true US3862015A (en) 1975-01-21

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US218418A Expired - Lifetime US3862015A (en) 1971-01-28 1972-01-17 Quenching tower for quenching coke and similar materials, and a quenching device as part of such a tower

Country Status (8)

Country Link
US (1) US3862015A (enExample)
JP (1) JPS5218721B1 (enExample)
BE (1) BE778625A (enExample)
DE (1) DE2203639B2 (enExample)
FR (1) FR2123489B1 (enExample)
GB (1) GB1370531A (enExample)
IT (1) IT951105B (enExample)
NL (1) NL156436B (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344822A (en) * 1979-10-31 1982-08-17 Bethlehem Steel Corporation One-spot car coke quenching method
US4396461A (en) * 1979-10-31 1983-08-02 Bethlehem Steel Corporation One-spot car coke quenching process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975106A (en) * 1956-06-04 1961-03-14 Koppers Co Inc Coke quenching stations and methods
US3033764A (en) * 1958-06-10 1962-05-08 Koppers Co Inc Coke quenching tower

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975106A (en) * 1956-06-04 1961-03-14 Koppers Co Inc Coke quenching stations and methods
US3033764A (en) * 1958-06-10 1962-05-08 Koppers Co Inc Coke quenching tower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344822A (en) * 1979-10-31 1982-08-17 Bethlehem Steel Corporation One-spot car coke quenching method
US4396461A (en) * 1979-10-31 1983-08-02 Bethlehem Steel Corporation One-spot car coke quenching process

Also Published As

Publication number Publication date
DE2203639A1 (de) 1972-08-17
FR2123489A1 (enExample) 1972-09-08
GB1370531A (en) 1974-10-16
FR2123489B1 (enExample) 1974-06-28
NL156436B (nl) 1978-04-17
DE2203639B2 (de) 1974-01-17
IT951105B (it) 1973-06-30
JPS5218721B1 (enExample) 1977-05-24
BE778625A (nl) 1972-07-26
NL7101162A (enExample) 1972-08-01

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