US3033764A - Coke quenching tower - Google Patents

Coke quenching tower Download PDF

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US3033764A
US3033764A US819091A US81909159A US3033764A US 3033764 A US3033764 A US 3033764A US 819091 A US819091 A US 819091A US 81909159 A US81909159 A US 81909159A US 3033764 A US3033764 A US 3033764A
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coke
quenching
stack
spray nozzles
steam
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US819091A
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Hannes Paul
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Beazer East Inc
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Koppers Co Inc
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    • 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
    • C10B39/08—Coke-quenching towers

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  • the invention relates to a coke quenching tower for horizontal coke oven batteries and more particularly those towers of the general type of Patent No. 1,848,818 of March 8, 1932, which are provided with a spray device for quenching the coke and a stack provided with spray nozzles for precipitating the particles of coke entrained by the quenching steam.
  • the resistance to upflow of steam is so great due to the downfiow of spray liquid that the draft effect on the steam in the stack is more or less annulled so that the steam leaves at the bottom of the tower through the entrance passageway for the quenching car to the quenching tower.
  • the object of the invention is a coke quenching tower having the stack constructed in the form of a venturi and in which spray nozzles, which spray liquid across the entire section of the stack, are arranged above the throat constriction of the venturi in the gradually widening upper section of the venturi.
  • a better suction efiect on the quenching steam immediately over the coke in the quenching car is achieved as a result of the high velocity of flow in the constricted throat part of the venturi stack, which velocity is again reduced in the upwardly widening part by such venturi construction of the stack of the coke quenching tower.
  • the invention also consists in providing in the region of the stack above the venturi throat and below the level spray nozzles, jalousie-like baffles which deflect the liquid from the spray nozzles to the walls of the quenching stack.
  • the sprayed water descending from the upper part of the stack is prevented from flowing down on to the coke in the quenching car and oversaturating the coke with water in an undesired manner.
  • a practically uniform quenching of the coke can be achieved with cleaning of the quenching steam in this manner by the use of separate spray nozzles in the lower venturi section which produce a very fine spray of the water suitable for spraying the coke, so that oversaturation of the coke with water in individual localized areas is prevented.
  • FIG. 1 is a longitudinal vertical cross section
  • FIG. 2 is a transverse vertical cross section through a coke quenching tower constructed in accordance with the invention.
  • the quenching tower 2 has in the lower part a car receiving quenching space corresponding essentially to the size of the coke quenching car 1.
  • a spraying device 3 is arranged above quenching tower 2 and is provided with spray nozzles 4 for spraying water to the top surface of coke on the inclined bottom of a quenching car 1 where it is loaded with incandescent coke to be quenched.
  • Spray nozzles 4 are so constructed that they bring the water on to the coke in the form of a very fine spray and thus effect a uniform quenching.
  • the end walls 5 of the lower part of a stack 8 are connected to quenching tower 2 so as to considerably converge towards the top of the stack to form a venturi throat 6 which is a narrow cross section and to which is connected an upper stack section with outwardly diverging end walls 7, whereby the effective cross section is increased towards the top of the stack 8 where it discharges the clean quench steam into the upper atmosphere.
  • Jalousie-like baiiies 12 are arranged upwardly alongside of the side walls 13 under the spray nozzles 10, starting from both sides of a central roof-like covering 11.
  • the steam flows laterally through the baffles.
  • the water from the spray nozzles is deflected to flow down along the walls 13 of the upper section 8a of the stack 8.
  • the bilaterally arranged jalousie-like baffles 12 there are arranged, below the throat 6 at the base of wall 13 of the stack 8, collecting grooves or troughs 14 from which grooved pipelines 15 lead to the bottom 16 of the quenching tower 2 so that the water flowing down from the spray nozzles 10 cannot pass to the quenching car along with the water from nozzles 4, thus avoiding waterlogging of the quenched coke.
  • the quenching car 1 when loaded with incandescent coke from one of the horizontal ends of a coking chamber of a battery of horizontal coke ovens, is run into the quenching tower 2 through one longitudinal end thereof which operation, as conventional, also automatically sets the spray heads 3 and 10 into operation to suddenly quench the coke in the car.
  • the car is run out of the tower to discharge the quenched coke onto a coke wharf or conveyor belt, and the car returned to the battery to receive the next coke oven charge to be quenched.
  • the water from sprays 4 drains through the coke on the car to the inclined bottom which discharges the quench water to the floor and sump, not shown.
  • the quench steam suddenly evolved as a result of the water from sprays 3 meeting incandescent coke, rises to enter the throat 6.
  • the convergence of the walls 5 to the throat increases the velocity of flow of the quench steam under the pressure of the steam developed by the heat of the coke.
  • the quench steam leaves the throat 6 to enter the upper atmosphere it expands, thus decreasing its velocity due to the divergence of the walls 7 of the upper section 8a of stack 8.
  • the quench steam is sprayed with water from spray nozzles 10 in the form of fine globules which precipitate dust from the quench steam or vapors.
  • This spray water and its precipitated dust is deflected to the longitudinal side walls 13 by the baflies 12.
  • the water and dust flows down the side walls, out of the path of rise of the greatest portion of the quench vapors to enter the collecting troughs 14, from which the water and dust flows through drain pipes 15 to the floor or sump to which the water from sprays 4 flows after leaving the inclined bottom of the car 1.
  • the water in pipes 15 thus bypasses the coke in the car 1.
  • a coke quenching tower adapted to receive in the lower part thereof a quenching car loaded with coke to be quenched from a battery of horizontal coke ovens and provided with a stack above said lower part; a lower set of spray nozzles above said lower part for discharge of quenching water on top of coke in a car in the tower for quenching of the coke; and an upper set of spray nozzles at a higher level in the stack than the level of said lower set of nozzles for precipitation of the particles of coke entrained by the steam evolved in said quenching; characterized by: said ,stack being constructed as a venturi having a lower upwardly converging section composed of oppositely disposed upwardly converging walls disposed above the lower set of spray nozzles, an upper upwardly diverging section enclosing said upper spray nozzles disposed above said lower converging section and composed of oppositely disposed downwardly converging walls for discharge of quench vapors at its top into the upper atmosphere, and
  • a coke quenching tower as claimed in claim 2 which includes a collecting trough disposed below the constricted throat at the base of the upper section to receive the water deflected by the baifies, and a conduit for draining the trough and disposed to by-pass the quenching car with the water from the trough.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)

Description

May 8, 1962 P. HANNES 00x5: QUENCHING TOWER Filed June 9, 1959 INVENTOR.
Paul. IL/HA/A/E'S.
H 7- TaJEA E.
United States Patent 3,033,764 COKE QUENCHING TOWER Paul Hannes, Essen-Steele, Germany, assignor, by mesne assignments, to Koppers Company, Inc., Pittsburgh, Pa., a corporation of Delaware Filed June 9, 1959, Ser. No. 819,091 Claims priority, application Germany June 10, 1958 3 Claims. (Cl. 202-227) The invention relates to a coke quenching tower for horizontal coke oven batteries and more particularly those towers of the general type of Patent No. 1,848,818 of March 8, 1932, which are provided with a spray device for quenching the coke and a stack provided with spray nozzles for precipitating the particles of coke entrained by the quenching steam.
The quenching of the coke, pushed from the coke oven, usually occurs in a quenching car by introduction of considerably large amounts of water onto the coke in a quenching car while the car is in a quenching tower provided with a spraying device therein and a stack above the spraying device.
The large amounts of steam produced, especially in the first period of the quenching, under high pressure entrain considerable amounts of small particles of coke or coke ash which leave the stack with the quenching steam and contaminate the surroundings.
It has already been suggested, as in the aforesaid patent, that the solid material entrained by the quenching steam be removed from the quenching steam in the stack by spraying the steam with water in the stack. However, a large amount of water must be sprayed into the stack in order to achieve a thorough separation of the solid material from the steam before it leaves the stack to pass into the atmosphere.
The resistance to upflow of steam is so great due to the downfiow of spray liquid that the draft effect on the steam in the stack is more or less annulled so that the steam leaves at the bottom of the tower through the entrance passageway for the quenching car to the quenching tower.
Now the object of the invention is a coke quenching tower having the stack constructed in the form of a venturi and in which spray nozzles, which spray liquid across the entire section of the stack, are arranged above the throat constriction of the venturi in the gradually widening upper section of the venturi.
A better suction efiect on the quenching steam immediately over the coke in the quenching car is achieved as a result of the high velocity of flow in the constricted throat part of the venturi stack, which velocity is again reduced in the upwardly widening part by such venturi construction of the stack of the coke quenching tower. By the arrangement of nozzles producing a very fine spray of water in the upper part of the venturi stack, a thorough cleaning of the quenching steam of its solid particles is achieved, since neither the danger of an escape from entrainment of the separated solid materials nor too great a resistance which would prevent the removal of the steam by suction exists in this upper part of the stack as a result of the slight flow velocity of the steam.
The invention also consists in providing in the region of the stack above the venturi throat and below the level spray nozzles, jalousie-like baffles which deflect the liquid from the spray nozzles to the walls of the quenching stack.
In this way, the sprayed water descending from the upper part of the stack is prevented from flowing down on to the coke in the quenching car and oversaturating the coke with water in an undesired manner. A practically uniform quenching of the coke can be achieved with cleaning of the quenching steam in this manner by the use of separate spray nozzles in the lower venturi section which produce a very fine spray of the water suitable for spraying the coke, so that oversaturation of the coke with water in individual localized areas is prevented.
A preferred embodiment of the invention is illustrated in the drawing, in which FIG. 1 is a longitudinal vertical cross section and FIG. 2 is a transverse vertical cross section through a coke quenching tower constructed in accordance with the invention.
As apparent from FIG. 1, the quenching tower 2 has in the lower part a car receiving quenching space corresponding essentially to the size of the coke quenching car 1. A spraying device 3 is arranged above quenching tower 2 and is provided with spray nozzles 4 for spraying water to the top surface of coke on the inclined bottom of a quenching car 1 where it is loaded with incandescent coke to be quenched. Spray nozzles 4 are so constructed that they bring the water on to the coke in the form of a very fine spray and thus effect a uniform quenching.
The quench water flowing out from the bottom of the quenching car 1, flows in the customary manner into a quenching water sump (not shown) from which it is again delivered after separation of the solid materials to spraying device 3, by means of a high tank (also not illustrated). The end walls 5 of the lower part of a stack 8 are connected to quenching tower 2 so as to considerably converge towards the top of the stack to form a venturi throat 6 which is a narrow cross section and to which is connected an upper stack section with outwardly diverging end walls 7, whereby the effective cross section is increased towards the top of the stack 8 where it discharges the clean quench steam into the upper atmosphere.
By this venturi throat construction of stack 8, the steam produced with attendant high pressure by heat absorbed in the quenching of the coke in car 1 is rapidly removed by high velocity of the throat section 6, and it issues from the constricted throat section 6 through which the quenching steam flows with a rather high velocity of flow, into upper section 8a of the stack 8 in which the velocity of the flow of the quenching steam is progressively reduced due to the divergence of its end walls 7. In the upper part of the stack of upper section 8a there is arranged a distributing line 9 with spray nozzles '10, which spray water in a very finely distributed condition across the entire cross section of the upper section 8a of the quenching stack 8. The fine particles of coke entrained by the off flowing quenching steam during the quenching of the coke, are precipitated by this very fine spray of water without essentially hindering the rising motion of the quenching steam out into the upper atmosphere.
Jalousie-like baiiies 12 are arranged upwardly alongside of the side walls 13 under the spray nozzles 10, starting from both sides of a central roof-like covering 11. The steam flows laterally through the baffles. As a result of the inclined arrangement of the baffles 12, the water from the spray nozzles is deflected to flow down along the walls 13 of the upper section 8a of the stack 8. Underneath the bilaterally arranged jalousie-like baffles 12 there are arranged, below the throat 6 at the base of wall 13 of the stack 8, collecting grooves or troughs 14 from which grooved pipelines 15 lead to the bottom 16 of the quenching tower 2 so that the water flowing down from the spray nozzles 10 cannot pass to the quenching car along with the water from nozzles 4, thus avoiding waterlogging of the quenched coke.
In operation, the quenching car 1, when loaded with incandescent coke from one of the horizontal ends of a coking chamber of a battery of horizontal coke ovens, is run into the quenching tower 2 through one longitudinal end thereof which operation, as conventional, also automatically sets the spray heads 3 and 10 into operation to suddenly quench the coke in the car. At the completion of the quenching operation, the car is run out of the tower to discharge the quenched coke onto a coke wharf or conveyor belt, and the car returned to the battery to receive the next coke oven charge to be quenched.
The water from sprays 4 drains through the coke on the car to the inclined bottom which discharges the quench water to the floor and sump, not shown.
The quench steam suddenly evolved as a result of the water from sprays 3 meeting incandescent coke, rises to enter the throat 6. The convergence of the walls 5 to the throat increases the velocity of flow of the quench steam under the pressure of the steam developed by the heat of the coke.
As the quench steam leaves the throat 6 to enter the upper atmosphere it expands, thus decreasing its velocity due to the divergence of the walls 7 of the upper section 8a of stack 8. At this decreased velocity the quench steam is sprayed with water from spray nozzles 10 in the form of fine globules which precipitate dust from the quench steam or vapors. This spray water and its precipitated dust is deflected to the longitudinal side walls 13 by the baflies 12. The water and dust flows down the side walls, out of the path of rise of the greatest portion of the quench vapors to enter the collecting troughs 14, from which the water and dust flows through drain pipes 15 to the floor or sump to which the water from sprays 4 flows after leaving the inclined bottom of the car 1. The water in pipes 15 thus bypasses the coke in the car 1.
The invention as hereinabove set forth is embodied in a particular form of construction, but may be variously embodied within the scope of the following claims.
I claim:
l. A coke quenching tower adapted to receive in the lower part thereof a quenching car loaded with coke to be quenched from a battery of horizontal coke ovens and provided with a stack above said lower part; a lower set of spray nozzles above said lower part for discharge of quenching water on top of coke in a car in the tower for quenching of the coke; and an upper set of spray nozzles at a higher level in the stack than the level of said lower set of nozzles for precipitation of the particles of coke entrained by the steam evolved in said quenching; characterized by: said ,stack being constructed as a venturi having a lower upwardly converging section composed of oppositely disposed upwardly converging walls disposed above the lower set of spray nozzles, an upper upwardly diverging section enclosing said upper spray nozzles disposed above said lower converging section and composed of oppositely disposed downwardly converging walls for discharge of quench vapors at its top into the upper atmosphere, and a constricted throat intermediate and communicably connecting the lower and upper sections at a level between the levels of the upper and lower spray nozzles.
2. A coke quenching tower as claimed in claim 1, and in which the upper section of the stack is provided with bafiies between the upper spray nozzles and the constricted throat and disposed therein in a manner for deflecting the liquid from the upper spray nozzles to a Wall of the upper section of the stack, to deliver such liquid out of the path of the fiow of quench steam to and from the throat.
3. A coke quenching tower as claimed in claim 2, and which includes a collecting trough disposed below the constricted throat at the base of the upper section to receive the water deflected by the baifies, and a conduit for draining the trough and disposed to by-pass the quenching car with the water from the trough.
References Cited in the file of this patent UNITED STATES PATENTS 796,304 Eba Aug. 1, 1905 1,848,818 Becker Mar. 8, 1932 2,234,826 Koppers Mar. 11, 1941 2,837,470 Hayden June 3, 1958 FOREIGN PATENTS 419,146 Germany Sept. 21, 1925 OTHER REFERENCES Rish et al.: Design and Selection of Hyperbolic Cooling Towers, from Combustion, January 1960, presented before the Amer. Soc. of Civil Engineers Symposium on Thermal Power Plants, October 1958 (pages 42-54).

Claims (1)

1. A COKE QUENCHING TOWER ADAPTED TO RECEIVE IN THE LOWER PART THEREOF A QUENCHING CAR LOADED WITH COKE TO BE QUENCHED FROM A BATTERY OF HORIZONTAL COKE OVENS AND PROVIDED WITH A STACK ABOVE SAID LOWER PARAT; A LOWER SET OF SPRAY NOZZLES ABOVE SAID LOWER PARTA FOR DISCHARGE OF QUENCHING WATAER ON TOP OF COKE IN A CAR IN THE TOWER FOR QUENCHING OF THE COKE; AND AN UPPER SET OF SPRAY NOZZLES AT A HIGHER LEVEL IN THE STACK THAN THE LEVEL OF SAID LOWER SET OF NOZZLES FOR PRECIPITATION OF THE PARTICLES OF COKE ENTAINED BY THE STEAM EVOLVED IN SAID QUENCHING; CHARACTERIZED BY: SAID STACK BEING CONSTRAUCTED AS A VENTURI HAVING A LOWER UPWARDLY CONVERGING SECTION COMPOSED OF OPPOSITELY DISPOSED UPWARDLY CONVERGING WALLS DISPOSED ABOVE THE LOWER SET OF SPRAY NOZZLES, AN UPPER UPWARDLY DIVERGING SECTION ENCLOSING SAID UPPER SPRAY NOZZLES DISPOSED ABOVE SAID LOWER CONVERGING SECTION AND
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Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806032A (en) * 1971-11-02 1974-04-23 Otto & Co Gmbh Dr C Coke quenching tower
US3862015A (en) * 1971-01-28 1975-01-21 Koninklijke Hoogovens En Staal Quenching tower for quenching coke and similar materials, and a quenching device as part of such a tower
US4294663A (en) * 1980-06-18 1981-10-13 Munters Corporation Method for operating a coke quench tower scrubber system
US4373997A (en) * 1979-01-02 1983-02-15 Didier Engineering Gmbh Apparatus for the transfer and quenching of coke
US8394242B2 (en) * 2010-05-19 2013-03-12 Westbrook Thermal Technology, Llc Wet quenching tower for quenching coke
CN104937075A (en) * 2013-03-15 2015-09-23 太阳焦炭科技和发展有限责任公司 Methods and systems for improved quench tower design
US9193913B2 (en) 2012-09-21 2015-11-24 Suncoke Technology And Development Llc Reduced output rate coke oven operation with gas sharing providing extended process cycle
US9193915B2 (en) 2013-03-14 2015-11-24 Suncoke Technology And Development Llc. Horizontal heat recovery coke ovens having monolith crowns
US9200225B2 (en) 2010-08-03 2015-12-01 Suncoke Technology And Development Llc. Method and apparatus for compacting coal for a coal coking process
US9238778B2 (en) 2012-12-28 2016-01-19 Suncoke Technology And Development Llc. Systems and methods for improving quenched coke recovery
US9249357B2 (en) 2012-08-17 2016-02-02 Suncoke Technology And Development Llc. Method and apparatus for volatile matter sharing in stamp-charged coke ovens
US9273249B2 (en) 2012-12-28 2016-03-01 Suncoke Technology And Development Llc. Systems and methods for controlling air distribution in a coke oven
US9321965B2 (en) 2009-03-17 2016-04-26 Suncoke Technology And Development Llc. Flat push coke wet quenching apparatus and process
US9359554B2 (en) 2012-08-17 2016-06-07 Suncoke Technology And Development Llc Automatic draft control system for coke plants
US9580656B2 (en) 2014-08-28 2017-02-28 Suncoke Technology And Development Llc Coke oven charging system
US9683740B2 (en) 2012-07-31 2017-06-20 Suncoke Technology And Development Llc Methods for handling coal processing emissions and associated systems and devices
US10016714B2 (en) 2012-12-28 2018-07-10 Suncoke Technology And Development Llc Systems and methods for removing mercury from emissions
US10041002B2 (en) 2012-08-17 2018-08-07 Suncoke Technology And Development Llc Coke plant including exhaust gas sharing
US10047295B2 (en) 2012-12-28 2018-08-14 Suncoke Technology And Development Llc Non-perpendicular connections between coke oven uptakes and a hot common tunnel, and associated systems and methods
US10053627B2 (en) 2012-08-29 2018-08-21 Suncoke Technology And Development Llc Method and apparatus for testing coal coking properties
US10526542B2 (en) 2015-12-28 2020-01-07 Suncoke Technology And Development Llc Method and system for dynamically charging a coke oven
US10526541B2 (en) 2014-06-30 2020-01-07 Suncoke Technology And Development Llc Horizontal heat recovery coke ovens having monolith crowns
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DE419146C (en) * 1924-11-22 1925-09-21 Wladislaus Heyden Coke extinguishing system
US2234826A (en) * 1938-07-22 1941-03-11 Koppers Co Inc Quenching tower for coking plants
US2837470A (en) * 1955-08-17 1958-06-03 Hayden And Company Coke quenching

Cited By (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862015A (en) * 1971-01-28 1975-01-21 Koninklijke Hoogovens En Staal Quenching tower for quenching coke and similar materials, and a quenching device as part of such a tower
US3806032A (en) * 1971-11-02 1974-04-23 Otto & Co Gmbh Dr C Coke quenching tower
US4373997A (en) * 1979-01-02 1983-02-15 Didier Engineering Gmbh Apparatus for the transfer and quenching of coke
US4294663A (en) * 1980-06-18 1981-10-13 Munters Corporation Method for operating a coke quench tower scrubber system
US9321965B2 (en) 2009-03-17 2016-04-26 Suncoke Technology And Development Llc. Flat push coke wet quenching apparatus and process
US8394242B2 (en) * 2010-05-19 2013-03-12 Westbrook Thermal Technology, Llc Wet quenching tower for quenching coke
US9200225B2 (en) 2010-08-03 2015-12-01 Suncoke Technology And Development Llc. Method and apparatus for compacting coal for a coal coking process
US9683740B2 (en) 2012-07-31 2017-06-20 Suncoke Technology And Development Llc Methods for handling coal processing emissions and associated systems and devices
US11692138B2 (en) 2012-08-17 2023-07-04 Suncoke Technology And Development Llc Automatic draft control system for coke plants
US10947455B2 (en) 2012-08-17 2021-03-16 Suncoke Technology And Development Llc Automatic draft control system for coke plants
US9249357B2 (en) 2012-08-17 2016-02-02 Suncoke Technology And Development Llc. Method and apparatus for volatile matter sharing in stamp-charged coke ovens
US10041002B2 (en) 2012-08-17 2018-08-07 Suncoke Technology And Development Llc Coke plant including exhaust gas sharing
US9359554B2 (en) 2012-08-17 2016-06-07 Suncoke Technology And Development Llc Automatic draft control system for coke plants
US11441077B2 (en) 2012-08-17 2022-09-13 Suncoke Technology And Development Llc Coke plant including exhaust gas sharing
US10053627B2 (en) 2012-08-29 2018-08-21 Suncoke Technology And Development Llc Method and apparatus for testing coal coking properties
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