Charging of coke ovens and method

• US 4,412,770 A
• Filed: 03/01/1982
• Issued: 11/01/1983
• Est. Priority Date: 05/04/1979
• Status: Expired due to Fees

• Current Assignee: Bergwerksverband GmbH, Didier Engineering GmbH
• Original Assignee: Bergwerksverband GmbH, Didier Engineering GmbH
• Inventors: Galow, Manfred, Stefancik, Nikolaus
• Primary Examiner(s): Sheridan, Robert G.
• Application Number:
  US06/353,587
• Time in Patent Office: 610 Days
• Field of Search: 414/162-164, 414/167, 414/171, 414/199-205, 414/786, 202/262, 193/31 R, 222/154
• US Class Current: 414/162
• CPC Class Codes: C10B 31/04 coke ovens with horizontal chambers
• CPC Class Codes: E21C 27/02 solely by slitting rods, drums, for same E21C25/10; saws, discs, wheels E21C25/18; chains, chain guides, for same E21C25/28
• CPC Class Codes: E21C 29/02 by means on the machine exerting a thrust against fixed supports

Abstract

A method and an apparatus is provided for charging particulate coal through ceiling holes into a coke oven. A conveyor above the coke oven ceiling is connected with each ceiling hole by a conduit. Mounted in the conduit is a first closure member which is movable to and from a position in which it permits gravity flow of coal from the conveyor to the ceiling hole. Also mounted in the conduit is a second closure member movable to and from a position in which it blocks the escape of gas from the ceiling hole. To charge, the second member is first moved to open position and thereupon the first member; when charging is completed the members are moved in reversed sequence to their closing positions.

Claims

1. Apparatus for charging particulate coal into charging holes in the ceiling of a coke oven from a conveyor above the ceiling and through passages formed by depending funnels having their lower ends connected to charging tubes, comprising first means for compensating stresses acting between the conveyor and the coke oven ceiling, said first means being a compensator interposed between the funnel and charging tube of a respective passage;

second means in said passages for selectively permitting and blocking the flow of coal to the charging holes;

third means also in said passages for blocking the escape of gases from the charging holes, said second and third means comprising respective closure elements each having a surface which faces away from, and also tapers in direction away from, the respective charging hole, said closure elements of said second means being mounted in the vicinity of the lower ends of the funnels, said charging tubes each having an upper cylindrical part communicating with the lower end of the funnel, and a plurality of lower tubular chute parts connected to a lower end portion of said cylindrical part and merging with each other in the vicinity of said lower portion; and

a diverter flap movable between a plurality of diverting positions in which it diverts coal from the funnel to different ones of said lower chute parts.

2. Apparatus as defined in claim 1, said closure elements being of substantially conical shape.

3. Apparatus as defined in claim 1, said closure elements being substantially bell-shaped.

4. Apparatus as defined in claim 1, wherein the charing tubes have lower ends extending into the respective charging holes, and wherein said third means comprise closure elements located forwardly of said lower ends and movable to and from a position in which they sealingly abut the respective lover ends.

5. Apparatus as defined in claim 1, the charging tubes having lower end portions proximal to the charging holes, and said closure elements of said third means being mounted in said lower end portions adjacent the respective charging hole.

6. Apparatus as defined in claim 5, said lower end portions defining a chamber of part-spherical shape and said closure elements of said third means being movable therein between a first and a second position in which they respectively open and close the associated charging hole.

7. Apparatus as defined in claim 6, said lower end portions each having an inner diameter sufficiently large to define with an outer periphery of the respective closure element of the third means a relatively narrow annular gap when the closure element is in said first position thereof.

8. Apparatus for charging particulate coal into charging holes in the ceiling of a coke oven from a conveyor above the ceiling and through passages formed by depending funnels having their lower ends connected to charging tubes so that particulate coal flow via said funnels and charging tubes in a predetermined direction, the apparatus comprising first means for compensating stresses acting between the conveyor and the coke oven ceiling;

second means in said passages for selectively permitting and blocking the flow of coal to the charging holes; and

third means also in said passages for blocking the escape of gases from the charging holes, said first, second and third means being arranged successively one after the other in the direction of coal flow, so that said first means is located immediately downstream of the respective funnel, said second means is located downstream of said first means and said third means is located downstream of said second means and in immediate vicinity to the respective charging hole, each charging tube having a lower end portion in which said third means are located, and wherein each lower end portion includes a wall portion pivotable to and from a position in which it exposes the interior of the respective lower end portion to access from the exterior thereof, the respective wall portions being detachable from the associated charging tubes.

9. Apparatus for charging particulate coal into charging holes in the ceiling of a coke oven from a conveyor above the ceiling and through passages formed by depending funnels having their lower ends connected to charging tubes so that particulate coal flow via said funnels and charging tubes in a predetermined direction, wherein each charging tube has an upper cylindrical part communicating with the lower end of the funnel, and a plurality of lower tubular chute parts connected to a lower end portion of the cylindrical part and merging with each other in the vicinity of the lower portion;

the apparatus comprising first means for compensating stresses acting between the conveyor and the coke oven ceiling;

second means in said passages for selectively permitting and blocking the flow of coal to the charging holes; and

third means also in said passages for blocking the escape of gases from the charging holes, said first, second and third means being arranged successively one after the other in the direction of coal flow, so that said first means is located immediately downstream of the respective funnel, said second means is located downstream of said first means and said third means is located downstream of said second means and in immediate vicinity to the respective charging hole; and

a diverter flap movable between a plurality of diverting positions in which it diverts coal from the funnel to different ones of said lower chute parts, said third means comprising respective closure elements each movable between a charging-hole opening position and a charging-hole closing position and operatively connected with said flap to move between said opening and closing position in response to movement of said flap to different ones of said diverting positions.

10. Apparatus for charging particulate coal into charging holes in the ceiling of a coke oven from a conveyor above the ceiling and through passages formed by depending funnels having their lower ends connected to charging tubes so that particulate coal flow via said funnels and charging tubes in a predetermined direction, the apparatus comprising first means for compensating stresses acting between the conveyor and the coke oven ceiling;

a second means in said passages for selectively permitting and blocking the flow of coal to the charging holes; and

third means also in said passages for blocking the escape of gases from the charging holes, said first, second and third means being arranged successively one after the other in the direction of coal flow, so that said first means is located immediately downstream of the respective funnel, said second means is located downstream of said first means and said third means is located downstream of said second means and in immediate vicinity to the respective charging hole, each charging tube having a lower end portion in which said third means are located, and each lower end portion being pivotable as a whole together with said third means therein to and from a position in which it exposes the interior of the respective lower end portion to access from the exterior thereof.

11. A method of charging particulate coal into charging holes in the ceiling of a coke oven from a conveyor above the ceiling and through passages formed by depending channels connected to charging tubes through which particulate coal flows in a predetermined direction and extending from the conveyor to the charging holes and each having a stress compensating element, a coal-flow controlling element and a gas outflow-controlling element therein, and wherein each charging tubes has an upper cylindrical part communicating with the lower end of the funnel, and a plurality of lower tubular chute parts connected to a lower end portion of the cylindrical part and merging with each other in the vicinity of the lower portion, the method comprising the steps of compensating stresses acting between the conveyor and the coke oven ceiling at a location immediately downstream of the funnels in the coal flow direction;

moving the respective gas outflow-controlling element, at a location downstream of the coal-flow controlling element and in immediate vicinity of the respective charging hole, to a position in which the respective charging hole is unblocked;

thereupon moving the coal-flow controlling element, at a location downstream of the stress compensating element in the coal flow direction and upstream of the gas outflow-controlling element, to a position in which coal can flow from the conveyor into the charging holes;

moving the coal-flow controlling element to a position in which the flow of further coal is blocked, upon completion of the charging;

returning the gas outflow-controlling element to a position in which the charging hole is blocked to prevent the escape of raw gas from the coke oven; and

moving a diverter flap between a plurality of diverting positions in which it diverts coal from the funnel to different ones of the lower chute parts; and

operatively connecting the respective gas outflow-controlling elements with the flap to move between the blocking and unblocking positions in response to movement of the flap to different ones of said diverting positions.

12. A method of charging particulate coal into charging holes in the ceiling of a coke oven from a conveyor above the ceiling and through passages formed by depending channels connected to charging tubes through which particulate coal flows in a predetermined direction, and extending from the conveyor to the charging holes and each having a stress compensating element, a coal-flow controlling element and a gas outflow-controlling element therein, wherein the gas outflow-controlling element is located in a lower end portion of the respective charging tube, the method comprising the steps of compensating stresses acting between the conveyor and the coke oven ceiling at a location immediately downstream of the funnels in the coal flow direction;

moving the respective gas outflow-controlling element, at a location downstream of the coal-flow controlling element and in immediate vicinity to the respective charging hole, to a position in which the respective charging hole is unblocked;

thereupon moving the coal-flow controlling element, at a location downstream of the stress compensating element in the coal flow direction and upstream of the gas outflow-controlling element, to a position in which coal can flow from the conveyor into the charging holes;

moving the coal-flow controlling element to a position in which the flow of further coal is blocked, upon completion of the charging;

returning the gas outflow-controlling element to a position in which the charging hole is blocked to prevent the escape of raw gas from the coke oven; and

pivoting each lower end portion of said charging tube as a whole together with said third means therein to and from a position in which it exposes the interior of the respective lower end portion to access from the exterior thereof.

13. Apparatus for charging particulate coal into charging holes in the ceiling of a coke oven from a conveyor above the ceiling and through passages formed by depending funnels having their lower ends connected to charging tubes, the charging tubes having lower end portions proximal to the charging holes and defining a chamber of part-spherical shape, the chambers each having an upper opening and a registering lower opening which communicates with the associated charging hole, the apparatus comprising first means for compensating stresses acting between the conveyor and the coke oven ceiling;

second means in said passages for selectively permitting and blocking the flow of coal to the charging holes; and

third means also in said passages for blocking the escape of gases from the charging holes, said second and third means comprising respective closure elements each having a surface which faces away from, and also tapers in direction away from, the respective charging hole, said closure elements of said third means being mounted in said lower end portions adjacent the respective charging hole and movable between a first and a second position in which they respectively open and close the associated charging hole, said chambers each accommodating an element of said second means and therebelow an element of said third means, said element of said second means being upwardly concave so that the element of said third means can at least partially nest therein, said elements being jointly and severally movable between the respective positions thereof.

14. Apparatus as defined in claim 13, said element of said third means having a height and a diameter corresponding at least substantially to the height and diameter of the concavity in the element of the second means.

15. Apparatus as defined in claim 13;

further comprising a hollow vertically displaceable first rod slidable in said chamber and carrying said element of said second means, and a second rod slidably extending through said first rod and carrying said element of said third means below said element of said second means.