US3519256A - Method and apparatus for insulating a heating wall of a coke oven battery - Google Patents

Description

July 7, 1970 w. HEISTERKAMP & 2

METHOD AND APPARATUS FOR INSULATING A HEATING WALL OF A COKE OVEN BATTERY Filed March 14. 1968 INVENTOR. W/LHELM HE/STEP/(AMP BY 5% S i /m %lame United States Patent 01 hee 3,519,256 METHOD AND APPARATUS FOR INSULATING A HEATING WALL OF A COKE OVEN BATTERY Wilhelm Heisterkamp, Essen, Germany, assignor, by mesne assigments, to Koppers Company, Inc., Pittsburgh, Pa., a corpo-ation of Delaware Filed Mar. 14, 1968, Ser. No. 713,230 Claims priority, application Germany, May 27, 1967, 1,671,322 Int. Cl. F23m 5 U.S. Cl. 263-46 4 Claims ABSTRACT OF THE DISCLOSURE The invention comprises a rail fastened to the roof over a coke oven chamber to which are attached a plurality of movable rollers that support downwardly hanging insulating slabs. The slabs of insulating material are movable into and out of a particular coke oven chamber.

BACKGROUND OF THE INVENTION Up to now, a group of six ovens have had to be taken out of operation for restoration of a single coke oven heating wall, The walls at the right and at the left of the to-be-repared wall were allowed to go cold and each next adjacent wall was insulated by engaging insulating bricks together. The building of such an insulating wall is very difiicult and time consuming, and it can be injurious to the health of the masons working on it. Moreover, the two heating walls that are to be protected cool unilaterally to a considerable extent as a result of the long time required to build these insulating walls, so that Cracks and even substantial deformations in many cases are the result. Therefore, the restoration of a heating wall is associated with a danger that four previously undamaged walls can be extensively damaged; narnely, the two walls that have been allowed to go cold and the two insulated walls. To avoid this risk, therefore, a repair of the heating walls has often been relinquished and instead of this particular oven chamber has been filled with brick refuse.

SUMMARY OF THE INVENTION The invention comprises fastening a rail underneath the top over a coke oven chamber on which is movably suspended an insulating curtain or wall formed by a plurality of individual insulating slabs that are connected together. The insulating wall extends from the roof to the floor of the coke oven chamber.

For a further Understanding of the invention and for advantages and features thereof, reference may be made to the following description in conjunction with the drawing which shows an embodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWING The drawing llustrates structure in accordance with the invention and that is suitable for practicing the method of the invention.

DETAILED DESCRIPTION Rail 1, e.g, an I-beam, is Suspended underneath the top 2 of the oven With chains 3` on steel supports 4. The latter are placed over the charging holes 5 of the oven chamber. The insulating wall hangs on the rail and it consists of a plurality of about 25 mm. thick insulating slabs 6 and reaches to the oven floor 7. Another piece of rail 8 is screwed on rail 1 outside of the oven chamber for erection of the insulating wall. Rail 8 makes it possible to join together vertical strips of insulating slabs (four in the present case) by means of clamps 9 in front of the oven chamber and then to push them into the oven with the aid of rollers 10. The individual vertical strips can in turn be connected with one another with clamps 9a. A flexible insulating wall is formed in this way and a slab can be removed therefrom at any place if needed.

Commercially available insulating slabs of comparatively slight thickness can be used with the apparatus according to the invention. This has the advantage that there is still sufiicient space in the oven chamber to be able to elfect the repairs there. It is possible, therefore, to insulate the walls adjacent to the heating wall to be restored, so that only the first cited walls need to be allowed to go cold and only four ovens have to be taken out of operation It is obvious that the drop of production during the repairing period is maintained essentially lower and also that two of the previously four endangered heating walls are removed from the danger zone.

As has been indicated, however, damage no longer appears on the. two heating walls adjacent to the repaired wall. This relies on the fact that the insulating walls according to the invention can be erected more rapidly and more simply than was the previously built insulating masonry, and a noteworthy unilateral cooling can absolutely not take place. In addition to the saving of work, the invention also results in a considerable saving of material so that special reference must be made to the fact that an insulating wall is still available for further applications after it is dismantled. If necessary, some few damaged insulating slabs would have to be replaced. On the contrary, only a slight portion of the bricks were again usable in the previously used insulating masonry.

Beyond that, the invention provides a very important facility in the production of heating wall nsulation, since an access to the oven chamber is no longer necessary for this purpose. On the contrary, the insulating slabs can -be assembled outside of the oven to form vertical strips, which are then pushed successively into the oven by means of rollers coordinated with them. Therefore, it is recommended to extend beyond the oven chamber the rail, which is Suspended according to another characteristic of the invention on steel supports, which are placed over the charging holes of the oven chamber. An additional piece of rail can be screwed onto the rail for this purpose for the duration of the erection and dismantling and the length of this piece of rail should correspond approximately to one strip of insulating slabs. Since access to the oven chamber is not necessary, the temperature of the to-be-nsulated heating wall does not have to be lowered nearly as much, for example only to about 800-850 C. To rcduce the danger of a cooling of the heating wall to a greater extent, furthermore, it is advantageous first to advance the insulating wall from one side to the center of the oven chamber and then, after complete nsulation of this half of the oven, to remove the oven door on the other side and to complete the nsulation from there.

What is claimed is:

1. Apparatus for insulating the hot heating walls of coke oven chambers so that repairs to an adjacent wall can be effected comprising:

(a) rails temporarily mounted to the tops of the coke oven chambers on opopsite sides of said to-be-repaired wall;

(b) a movable wall comprised of insulating sections Suspended from rollers cooperating with each said rail within said coke oven chambers whereby heat radiating from said hot heating wall is partially absorbed by said insulating material; and

(c) a removable rail section that is attachable to the rail within each one of said chambers, and that extends outside of said coke oven chamber, said insulating movable wall sections being assembled on said temporary rail section prior to being moved into said chamber to form a complete insulating wall.

2. The invention of claim 1 including:

(a) rail supporting means passing through the charging holes of said coke oven chamber that are con nected to said rails and that are supported by the roof of said coke oven and (b) means for removing said rail supporting means when said temporary walls and said rails are removed.

3. In the method for repairing a heating Wall in a coke oven, the improvement comprising the steps:

(a) removing from production two coke chambers on each side of the to-be-repaired wall;

(b) maintaining the adjacent walls immediately on each side of said to-be-repaired wall at a temperature in the range of 800-850 C.;

(c) temporarily mounting rails to the tops of the coke oven chambers on opposite sides of said to-be-repaired wall;

(d) suspending individual insulating wall sections from rollers coacting with said rails;

(e) rolling said insulatng wall sections into each one of the immediately adjacent oven chambers on opposite sides of said to-be-repaired wall; and

(f) removing said temporary walls from said coke oven chambers when the repairs to said wall are etfected.

4. The invention of claim 3 wherein:

(a) said wall sections are moved into said chambers from oposite ends of said chambers.

References Cited UNITED STATES PATENTS 228,549 6/ 1880 McDonald 263-50 621,577 3/1889 Lanyon 263-50 2,179,635 11/1939 Kimmel 263-50 X JOHN J. CAMBY, Primary Examiner U.S. Cl. X.R.

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