US3367844A - Apparatus for quenching coke from horizontal coke ovens - Google Patents

Description

Feb. 6, 1968 w. CREMER 3,367,844

APPARATUS FOR QUENCHING COKE FROM HORIZONTAL COKE OVENS Filed Sept. 5, 1963 2 SheQLs-Sheei l I ll R INVENTOR. W4L 7f? CREME? 2 Sheets-$nee W. CREMER Feb. 6, 1968 APPARATUS FOR QUENCHING COKE FROM HORIZONTAL COKE OVENS I Filed Sept. 5

N mm INVENTOR. W41 TEA CPL-"MEX? United States Patent Ofiice 3,367,844 Patented Feb. 6, 1968 3,367,844 APPARATUS FCR QUENCHING COKE FROM HORIZUNTAL COKE OVENS Walter Cremer, Essen, Germany, assignor, by mesne assignments, to Koppers Company, Inc., Pittsburgh, Pa,

a corporation of Delaware Filed Sept. 5, 19-63, Ser. No. 306,734 7 Claims. (Cl. 202-427) ABSTRACT ()1? THE DHSCLOSURE Apparatus for quenching coke comprises an inclined rotatable vessel that is movable along a coke battery and is communicable with a coking chamber about to be pushed. Quenching water is sprayed onto the hot coke in the vessel and the generated steam, containing dust particles, passes through a dust separator to remove the dust particles. The quenched coke discharges onto a moving belt conveyor.

The present invention relates to an apparatus for quenching coke from horizontal coke ovens in an inclined vessel which may be moved in front of the oven battery and is provided with a stack for the quenching steam.

The coke is quenched in the usual manner by transferring the glowing coke from the oven chamber through a coke guide means into a quenching car which may be moved in front of the oven battery. The coke is then quenched in the quenching car with large amounts of water in a coke quenching apparatus.

Large amounts of dust and smoke are formed when the coke is pushed into the quenching car. This pollutes the surroundings. Another pollution of the surroundings occurs by the quenching of the coke in the quenching apparatus, in the course of which the quenching steam suddenly produced in large amounts entrains large amounts of coke particles which go into the atmosphere it special apparatus are not provided in the quenching tower for precipitation of these particles of coke.

The coke guide apparatus has been lined with a jacket to prevent an escape of dust. A prerequisite for a complete freedom of dust, however, is the covering of the quenching car. This is difficult and expensive as a result of the slow transfer for the purpose of a uniform distribution of the coke.

It is also known that the coke may be introduced into an inclined vessel, which is connected directly with the coke guide. The coke is sprayed with water in this inclined vessel and a stack is connected to it for discharge of the quenching steam. However, the problem of transferring the coke without dust into the quenching apparatus and of preventing a discharge of coke particles from the stack for the quenching steam during the quenching is not solved by this. 7

The present invention now consists in using as quenching vessel a rotary drum which is connected with the opening of the oven chamber with intermediate position of a retaining chamber which receives at least the contents of one oven chamber. The retaining chamber is connected essentially gas-tightly to the sealing frame of the oven with a sealing edge.

The quenching of the coke in the rotary drum, into which the coke is transferred in thin layers, takes place according to the present invention by means of nozzles which are mounted in the front part. The main amount of quenching water is sprayed through these nozzles.

The smaller pieces of coke that are saturated with large amounts of water come in contact with the larger pieces of coke by the slow, regulable rotary motion of the rotary drum. This results in a comparatively rapid exchange of heat and liberation of the water. According to the invention, a spray means is arranged in the back part of the rotary drum. The residual amount of water necessary for a satisfactory quenching is sprayed through this spray device.

According to another characteristic of the invention, the amount of residual quenching water is controlled by a temperature regulator which measures the temperature of the coke before this quenching zone, so that the amount of quenching water may be held to the minimum amount necessary for a lowest possible content of water and the water content of the quenched coke is adjusted at a minimum amount.

The coke is then continuously discharged from the outlet of the rotary drum through a sluice corresponding to the output of the drum.

The invention is illustrated in the accompanying drawings by way of example.

FIGURE 1 illustrates a quenching apparatus which moves in front of the oven chamber.

FIGURE 2 is a side view of FIGURE 1, showing a cross-section through the oven battery.

The oven battery 1 consists in the usual manner of a number of oven chambers 2 arranged side by side. A coke quenching apparatus 4 is movably arranged in front of the oven battery on guide wheels 3. The coke quench-ing apparatus consists essentially of an inclined rotary drum 5 and a retaining chamber 6 lined with fireproof structural material and connected to drum 5. Chamber 6 receives all of the coke to be pushed from oven 2.

Chamber 6 has a telescopic part 8 that is capable of being pressed against the sealing frame 7 of the oven. A gas-tight connection with oven chamber 2 is provided by this telescopic part 8. Chamber 6 is tapered at the bottom and proceeds in this tapered part [9 inclinedly in the stationary headpiece 10 of the rotary drum 5, into which the coke is gradually introduced corresponding to the rotary motion. The headpiece 10 is also provided with an opening 11 to which is connected a stack 12 for the quenching steam. A dust separator 13 of any optional structure is connected with discharge stack 12. An exhauster 14 is, in turn, connected to the dust separator 13 and i provided with a discharge pipe 15.

Quenching water supply pipes 16 pass through the headpiece 10 of the rotary drum 5. Spray nozzles 17 are provided on the ends of supply pipes 16. These spray nozzles are arranged in the front part of the rotary drum. One or more spray nozzles 18 are arranged in the back of the rotay drum and are connected to a water line 20 which passes through the discharge part 19. A discharge means 21 is arranged in the stationary discharge part 19. Discharge means 21 may consist of a bucket wheel or the like and transfers the coke to a conveyor belt 22 in accordance with the capacity of the rotary drum. The quenched coke is transferred from the conveyor belt 22 by another conveyor belt 23 either to an existing coke whart or directly to the screening apparatus.

The amount of water that is introduced through the quenching-water nozzles 17 is slightly below the amount that is necessary for the complete quenching. The quenching begins immediately with the pushing of the coke from oven 2 by pusher rod 24. All pieces of coke are alternately brought in contact with one another during the rotary motion of the rotary drum 5, so that an exchange of heat occurs. The amount of residual water, which is still required for the coke, is determined by a temperature measurer 25 which projects in the coke shortly before the quenching zone of the spray nozzles 18. The supply of the amount of residual water is then regulated by regulating means 26 arranged in the quenching water line 20. The quenching vapors are exhausted by means of exhauster 14 with separation of entrained coke particles in the dust separator 13. If desired, the quenching steam may be utilized in a heat exchanger and then discharged into the atmosphere through discharge pipe 15. The amount of quenching steam to be exhausted in a unit of time and the pressure in the rotary drum determined thereby are automatically regulated by a pressure regulator either by throttle valve 27 or by regulation of the number of revolutions of exhauster 14. After the pushing of the coke is completed, the quenching apparatus is closed essentially gas-tightly by a valve 28.

A quenching-water channel 29 is arranged along the oven battery. The exhaust connections 30 of a line 32 provided with a quenching-water pump 31 proejct in channel 29.

A discharge 36 is connected to dust separator 13 and is provided with a sluice 37, through which the separated coke dust is conveyed into the rotary drum.

A customary door lifting device 33 may be connected with the quenching apparatus. After removing the door from the oven chamber, the door is swung aside by 90 by means of the door lifting device 33, in order to bring the telescopic end 8 of the retaining chamber 6 adjacent to the oven chamber.

The revolving speed of the rotary drum 5 is regulable corresponding to the desired rate of transferring the coke.

I claim:

1. Apparatus for receiving and quenching hot coke being pushed from a horizontal coking chamber of a coke battery comprising:

(a) a receptacle that is movable to a position adjacent a respective coke chamber and having an inlet opening for passing into the receptacle hot coke being pushed from said coke chamber;

(b) an inclined rotatable vessel having one end communicating with said receptacle so that said coke discharges from the receptacle into said inclined rotatable vessel, the vessel being movable with said receptacle into a position adjacent a respective coke chamber;

(c) means for rotating said inclined vessel whereby said hot coke, entering said inlet end and producing solid particulate matter in the atmosphere, moves downwardly and away from said inlet end toward a lower discharge end;

((1) means for closing the discharge end of said vessel;

(e) means within said inclined vessel to wet and quench said hot coke thereby producing steam within said inclined vessel;

(f) means for temporarily sealing gas tightly the receptacle inlet to the coke chamber while said receptacle is located adjacent said coke chamber;

(g) means for conducting the steam and the solid particulate matter out of said inclined vessel;

(h) means in communication with said conducting means for separating the solid particulate matter from the steam;

(i) an exhauster communicating with said separating means for removing said steam and dust particulate material from said vessel; and

(j) means for removing the quenched coke from said inclined rotatable vessel.

2. The apparatus of claim 1 including:

(a) a temperature measurer disposed at a location in said vessel intermediate said first and second zones for sensing the temperature of said coke subsequent to first quenching; and

(b) a regulator disposed outside of said vessel and responsive to said temperature measurer for controlling the amount of residual quenching water supplied to second sprays whereby the amount of said residual water supplied is a minimum.

3. The apparatus of claim 1 wherein:

(a) said means for discharging the quenched coke from said vessel includes a rotary bucket wheel; and including (b) a belt conveyor for receiving said discharged coke and conveying it away from said vessel.

4. The apparatus of claim 1 wherein:

(a) said means for conducting steam and solid particulate matter is a stack.

5. The apparatus of claim 1 wherein:

(a) the means for sealing gas tightly the receptacle inlet to said coke oven includes (i) a first tubular element fixed to said receptacle and a second tubular element that telescopes within said first element and abuts against the face of said coke oven chamber, and

(ii) a valve that is movable and positionable in said second tubular element to prevent the passage of gases through said first and second tubular elements.

6. The apparatus of claim 1 wherein:

(a) the means to wet and quench said hot coke includes first water sprays disposed in a first zone in said vessel near the inlet end thereof for supplying a major amount of water to quench said hot coke as it is first introduced into said vessel;

(b) second water sprays disposed in a second zone in said vessel near the discharge end thereof for supplying a residual amount of quenching water to said coke; and including (c) means to close the inlet opening of said receptacle after coke has been pushed therethrough to make said chamber substantially gastight.

7. The apparatus of claim 6 wherein (a) said means to close the inlet of said receptacle includes a movable valve.

References Cited UNITED STATES PATENTS 1,602,819 10/ 1926 Jakowsky 202227 X 2,785,115 3/1957 Borch 202227 X FOREIGN PATENTS 14,511 3/1929 Australia. 20,144 10/ 19 10 Great Britain.

JOSEPH SCOVRONEK, Primary Examiner.

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