US3036720A

US3036720A - Horizontal coke-oven charging apparatus

Info

Publication number: US3036720A
Application number: US789295A
Authority: US
Inventors: Malkomes Walter
Original assignee: Koppers Co Inc
Current assignee: Beazer East Inc
Priority date: 1959-01-27
Filing date: 1959-01-27
Publication date: 1962-05-29
Anticipated expiration: 1979-05-29

Description

May 29, 1962 w. MALKoMl-:s 3,036,720

HORIZONTAL COKE-OVEN CHARGING APPARATUS Filed Jan. 27, 1959 United States p Filed Jan. 27, 1959, Ser. No. 789,295

2 Claims. (Cl. 214-18) The invention relates to a horizontal coke-oven charging apparatus provided with lid lifting devices coordinated with each of the charging-hole covers or lids of the oven chamber of a battery and with each lid lifting device arranged in a closed housing on the conventional larry car, with a charging gas suction line arranged in the vicinity of the individual coal outlets of the larry car.

For preventing annoyance to the operating personnel by the charging gases and smoke escaping from the oven chamber during the charging, it is already known to lift each lid cover otf of the charging holes by means of a lifting device arranged inside a closed housing of the coal outlet of the coke-oven larry charging apparatus and to take it out of the reach of the to-be-charged coal by introduction of the lid into a chamber laterally connected with the housing.

Such a larry charging apparatus indeed prevents the necessity for a displacement of the coke-oven larry charging apparatus, after lifting the lid cover, for the purpose of moving it aside and also prevents an annoyance to the operating personnel by the escaping coal charging gases. However, such an apparatus requires considerable time for performing the various operations and also necessitates complicated drive means. Because of the considerable time required for lifting the lid cover of the coal charging hole considerable amounts of valuable distillation gases are lost through the charging-gas suction line connected to the coke-oven charging apparatus.

The object of the invention is to shorten considerably the time required for lifting the cover of the charging hole out of the path of the coal from the charging apparatus and for again replacing it after completed charging of the oven chamber.

The invention consists in arranging each of the lifting devices for the lid covers of the charging holes of the oven chambers in a space constructed as a lower coal guide hopper and located underneath an upper charging bin or hopper of the larry car for said oven chambers.

In this way the coke-oven charging apparatus needs -only to be moved once over the closed charging holes of the oven chamber to be charged7 and then the covers of the charging holes are lifted by lowering the lifting device and then raising the lifting device lfor the covers of the charging holes inside each lower coal hopper, and immediately thereafter, lower closures -for the upper charging bin or hopper are opened for the purpose of charging the coal into the oven chamber so that the coal can go around the lifting device and the covers, through the lower guide hopper, into the oven chamber.

The lifting device for the covers preferably consists of a magnetic device which magnetically grasps the lid cover of the roof coal charging hole without auxiliary special mechanical gripping means. However, it is also possible to provide the lifting means for the lid covers with a gripping device which, when lowered, engages in the form of a grapple or tong grasping hooks under a ledge of the lid cover of the charging hole. The drive means for lowering the magnetic ltfing device or a lowerable rod connected with the tong lifting device for grapsing the cover of the oven roof coal charging hole, advantageously, thus can be constructed in various optional manner. It can be, for instance, operated electrically as well as pneumatically or hydraulically.

l arent ice Another object yof the invention is to provide the lid frame of the coal charging-hole in the oven roof, at a level above the level for the cover ofthe charging hole, with a detachable or rigidly connected, funnel terminated at its top flush with the top of the oven roof or projecting above the latter, in which funnel the drop sleeve coal outlet of the lower guide hopper yof the charging device can be lowered before lifting the lid cover of the charging hole.

In this way a direct, essentially gastight, connection is provided by the sleeve part of the guide-hopper outlet when lowered into this funnel part of the frame of the charging hole, which prevents any collection or retention of coal on the edge of the oven roof charging hole and permits a free lifting of the lid cover of the charging hole in the guide hopper of the charging apparatus.

A preferred embodiment of the invention is illustrated inthe accompanying drawing.

FIG. 1 illustrates a horizontal coke oven battery with the apparatus conforming to the invention, the view being partly in plan view and partly in vertical section above an oven chamber to be charged, the top of which is indicated in a longitudinal vertical cross section.

FIG. 2 is a partial section through an amplified showing of a charging hole of the oven chamber as shown in FIG. 1, with the lower sleeve part of a larry charging apparatus.

In the modification of a horizontal coking retort oven battery, as illustrated on the drawings, the roof top 2 of each oven chamber 1 is provided with four roof charging holes 3. As apparent from FIG. 2, on the upper end of each charging hole 3 there is rigidly built in the top of the roof of the oven battery a cast iron charging-hole yframe 4 which has a lateral annular flange 5 embedded in the roof and a funnel extension 7 forming an inclined surface 6. The upper terminal edges of this funnel extension 7 are preferably higher than the flange 5 and at the same level as the upper level of the lill at the top of the roof of the oven as indicated by line 25. The lid cover 8 of the charging hole 3 fits against the inclined surface 6 of lid frame 4 of the charging hole. A free annular space 10, which can be tilled with a sealing or luting composition, for example clay, for the purpose of preventing an escape of gas during the coking in chamber 1, is formed above and between the downwardly deflected edge 9 of the lid cover 8 of the charging hole and frame 4.

On a car frame 11a mounted on wheels 11b to run on tracks 11c along the top of the ybattery roof top 2, an upper charging bin or hopper 1-1, the lower outlet 12 of which can be closed by means of a conical seal in the form of a bell 13, is coordinated with each charging hole 3. Conical seal in the form of a bell .'13 is rigidly connected with a reciprocable pipe 24 projecting out of the upper charging bin 11. Pipe 24 can be raised and lowered by means of any suitable drive means not illustrated.

A lower guide hopper 14, having a larger cross-section than the lower outlet 12 of the upper hopper or charging bin 11, is connected with each of the upper charging bins 11 and each is tapered to narrow downwardly toward a still lower narrow cylindrical continuation 15 coaxial with the lower outlet 12 of the upper hopper 11. Inside the lower guide hopper 114 there is arranged coaxially of the conical bell seal 13 a `cover lifting device 16 4which may be in the form of a magnetic device which magnetically grasps the cover of the charging hole without special grasping means which is mounted on reciprocable means, and which may be in the form of a rod 17, chain, or the like. extending through separately reciprocable pipe 24 so that the cover lifting means or device 16 can be raised or lowered. Cover lifting means or device 16 is raised and lowered by means of the rod 17 through a drive means suitable therefor but not illustrated in the drawing, for example by means of a chain moving on rollers or the like (not illustrated) or by means of a rack projecting from guide hopper 14 (also not illustrated). However, it is also possible to arrange the drive of the cover lifting means 16 in a closed housing inside lower guide hopper 14 and to effect the lifting by means of a lowerable rod connected with the lifting device and which can be raised and lowered, and which projects downwardly from the drive means, and which is provided with grasping means.

The cylindrical continuation of the lower guide means 14 has such a cross-section that the cover 8 of the charging hole and also the lifting means in case the entire lifting means is to be lowered, can be raised or lowered through continuation 15 with play.

A telescopic sleeve pipe 19 is connected to the cylindrical continuation 15 of the lower guide hopper 14. Telescopic sleeve pipe 19 is provided on the bottom with a conical converging continuation 20 corresponding to the conical surface 10 of the frame of the charging hole. Conical continuation 20 fits essentially gastightly against conical surface 10 of the charging hole frame 4 on lowering telescopic pipe 19.

A charging-gas suction line 21 is connected to the top of each guide hopper or funnel 14. Each charging-gas suction pipe 21, or each two such pipes of adjacent charging hoppers are communicably connected with a vertical oiftake pipe 22 for discharging or burning, as conventional, the smoke and other charging gases evolved during charging in of the coal. However, the charging-gas pipes 21 of all charging bins or hoppers 11 can be connected each one with another and have a common discharge pipe or combustion pipe 22. d

The cover lifting means 16 is preferably constructed as a magnetic cover lifting means. An annular space 23 is formed, between lifting means 16 and the wall of the upper wider part guide funnel or hopper 14, of such dimensions that after lowering the conical seal 13 of the upper charging bin or hopper 11 into the position illustrated by the broken line, a suiciently large annular space 23 is formed for the coal to fall down around 16 to the hole 3.

The conical seal 13 of the upper charging bin or hopper 11, together with its pipe 24, are preferably also rotatably mounted so that a rotary motion is imparted to the conical seal 1'3 simultaneously with the lowering of the latter; thus effecting a twisting motion to the stream of coal flowing in annular space 23. For this purpose the upper surface of the conical seal 13 is provided with ribs 26.

The oven chambers 1 are each charged by moving the larry charging apparatus over the charging holes 3 of the oven chambers 1 to be charged, and lowering telescopic pipes 19 into the funnel part 7 of frame 4 of the charging holes 3. The cover lifting means 16 of all four charging bins 11 are now lowered on the charging-hole covers, the latter are magnetically or tong or grapple grasped and withdrawn, and the cover lifting means 16 are again lifted in the illustrated position. The conical seals 13 are then lowered by shaft 24 to the position illustrated by the broken line and the oven chamber is charged with coal from upper hopper 11.

The charging gases formed by the coal during the charging are exhausted by the charging-gas suction means 21, 22 and are burned or otherwise disposed of. The guide hopper 14 serves also as a dust separator since the charging gases undergo a reduction in their velocity in the comparatively large free space in hopper 14 so that at least a part of the solid material, coal dust, etc., entrained from the oven chamber in the case of intensive production of charging gases can precipitate in hopper 14.

After the charging is completed, the charging-hole lid cover 8 is immediately again lowered by means of the cover lifting apparatus y16, so that the charging holes are closed without requiring the otherwise customary sweeping in of the residual coal.

I claim:

1. Horizontal coke oven charging larry apparatus, comprising: a car frame mounted on wheels to run on tracks along the top of a battery of horizontal coking chambers, for charging coal through top charging holes in the roofs of the oven chambers, an upper hopper with a lower coal outlet and a closed lower hopper disposed under the upper hopper to enclose said lower coal outlet and terminating at its lower part in a bottom outlet, said hoppers being mounted on said car frame with their outlets in axial alignment and in position relative to the car frame to register in axial alignment with one of the top charging holes of each of the oven chambers of said battery; a conical bell seal for closing the lower outlet of the upper hopper and reciprocable into the top of the lower hopper, for discharge of coal through the lower hopper; and a lid cover lifting device for lifting a lid cover off of said top charging holes, arranged in said lower hopper underneath said conical `bell seal for lifting a said lid cover through said bottom outlet for the lower hopper into the latter; means for raising and lowering the lid cover lifting device relative to the conical bell seal and in axial alignment with the axis of the conical bell seal, for lifting and restoring a lid for a top charging hole in axial alignment beneath the conical bell seal and the upper hopper outlet, and a charging-gas suction line in communicable connection with the lower hopper for off-flow of smoke during charging.

2. Coke-oven charging apparatus, as claimed in claim 1, and in which the top charging-holes of the oven chambers are provided with a frame at the top of the oven roof with a seat portion below the top of the roof, for seating of the lid covers, and with a downwardly inclined funnel part above the lid cover seat portion, 4for reception of a telescopic sleeve on the bottom coal outlet of the lower hopper before the lid cover of the charging hole is lifted by the lid cover lifting device, and a telescopic sleeve on the bottom coal outlet of the lower hopper for reception in said downwardly inclined funnel as aforesaid.

References Cited in the file of this patent UNITED STATES PATENTS 1,609,919 Underwood Dec. 7, 1926 2,129,658 Drehschmidt Sept. 13, 1938 2,204,019 Koppers June 11, 1940 2,322,406 Whitcomb et al. June 22, 1943 2,477,406 Church July 26, 1949 2,488,953 Willputte et al Nov. 22, 1949 2,612,298 Wearne Sept. 30, 1952 2,646,395 Padgett July 21, 1953 'i' ill.. .im