Coke oven wall with a plurality of flue cavities

Details Coke oven wall with a plurality of flue cavities Coke oven wall with a plurality of flue cavities

1998-05-11

2000-05-23

Knode, Marian C.

Distillation: apparatus

Apparatus

Systems

202220, 202223, 110336, 110338, C10B 106, C10B 100, F23M 500, F23M 502

Patent

active

060662360

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

This invention relates to a coke oven.
More particularly, the invention relates to novel coke oven wall structures and methods for making coke oven walls.
Coke ovens traditionally comprise massive refractory brick structures in which there are batteries of adjacent parallel walls made up from a large variety of differently shaped refractory bricks. The bricks must be able to withstand high temperatures and strong mechanical loading. At the same time, the interior of the walls contains flue ducts, burners, flue gas control passages and the like. The detailed design of the oven is usually quite complicated in order to obtain the necessary heat distribution within the oven and gas flows through the walls.
It follows from the above that coke ovens are relatively costly structures and any downtime for servicing and repairs can represent a significant economic loss for an operator.
Further, the production of ceramic bricks from which the walls are made is relatively costly and there is accordingly a need to generally reduce the number of different types of bricks which are used in a wall. It is undesirable, however, to have a design concept which utilises relatively large ceramic bricks in the construction. Excessively large bricks cannot be handled without the use of mechanical lifting devices. Further, bricks having a dimension greater than 650 mm machined pressed to form a fused silica product are generally unavailable. Bricks greater than this size can be hand cast but these are much more expensive. Large bricks can be machine pressed from conventional silica, but conventional silica bricks would have a very serious disadvantage in that a wall made therefrom would need a heat up time which is many times greater than that for fused silica bricks.
The object of the invention is to provide a new coke oven wall construction which overcomes a number of disadvantages of the prior art.


BRIEF SUMMARY OF THE INVENTION

According to the present invention there is provided a coke oven wall comprising a plurality of bricks laid so as to define first and second wall faces, and a plurality of flue cavities extending therein characterised in that at least part of the wall is made first, second and third bricks which are laid together and define in part the first and second faces and said flue cavities wherein the fist brick comprises a first body portion and an inwardly projecting first leg the second brick comprises a second body portion and an inwardly projecting second leg the third brick comprises a flue wall brick which is located between and aligned with the first and second legs.
Preferably, one end of the flue brick includes a first interlocking formation and the end of the second leg includes a second, complementary formation.
Preferably further, the other end of the flue wall brick is shaped so that it can be trimmed to length so as to abut the end of the first leg whereby the walls taper depending on the amount trimmed from the other ends of the flue bricks.
Preferably, the first and second bricks include upper and lower formations on upper and lower faces thereof whereby successive courses of bricks interlock with one another. Preferably the upper and lower formations are shaped so that they can be used in an existing expanded battery.
Preferably further, the first and second body portions have the same length and the first leg is offset by a predetermined amount relative to the length of the first body portion and the second leg is offset by the same predetermined amount relative to the length of the second body portion but in the opposite direction, the arrangement being such that the first face of the wall has alternate courses of first and second bricks whereby a bond pattern is formed.
Preferably further, the flue brick includes a third interlocking formation on its upper face and a fourth generally complementary formation on its lower face, said third and fourth formations having a relatively loose fit when said flue bricks are laid on top of each other to thereby accommodat

REFERENCES:
patent: 1782638 (1930-11-01), Totzek
patent: 2141035 (1938-12-01), Daniels
patent: 3359184 (1967-12-01), Thiersch et al.
patent: 3809620 (1974-05-01), Wackerbarth et al.
patent: 4196052 (1980-04-01), Szurman et al.
patent: 4347106 (1982-08-01), Wackerbarth
patent: 4364798 (1982-12-01), Costa
patent: 4452749 (1984-06-01), Kolvek et al.

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