Distillation: apparatus – Apparatus – Elements
Patent
1997-09-17
1999-07-20
Yildirim, Bekir L.
Distillation: apparatus
Apparatus
Elements
202291, 202265, 202270, C10B 3702
Patent
active
059252227
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention concerns a leveller bar for coke ovens for levelling the coke bulk charging cone forming below the charging holes of a coke oven chamber during the coal charging process. The leveller bar comprises interconnected support elements which extend over the entire length of the oven chamber and which are arranged in parallel to one another at a distance dependent on the width of the oven chamber.
BACKGROUND OF THE INVENTION
DE 40 34 341 C2 describes a prior art leveller bar consisting of vertical metal plates arranged in a longitudinal oven direction and in parallel to each other, with there being transverse coal entrainment carriers located at regular distances in the intermediate space confined by the vertical plates.
Moving of leveller bars of this type into the oven chamber during the coal charging process usually blocks the oven free space above the coal charge by approx. 60% (see FIG. 1 attached hereto). This constraint frequently involves clogging inside the oven free space by the end of the coal charging process and, associated therewith, serious emission because the charging gases can no longer be discharged to the suction point, i.e. to the standpipe or to the gas jumper pipe.
DE-A 10 58 018 describes a leveller bar for coke ovens. The part of the bar which is movable into the coke oven is provided with two side wings comprising web-type connection elements arranged at certain distances. The two side wings are shaped like closed hollow girders with evenly arched sheff plates. Clogging and emissions as a consequence thereof may occur because of the continuous lateral metal plates.
SUMMARY AND OBJECTS OF THE INVENTION
It is an object of this invention to propose a new design and construction for the coal leveller bar making it feasible to exhaust the charging gases always, if possible, in an unrestricted manner.
According to the invention a coke oven leveller bar arrangement is provided for levelling the coke bulk charging cone forming below a charging hole of a coke oven chamber during the coal charging process. The leveller bar is formed of interconnected support elements extending over an entire length of the oven chamber and arranged in parallel to one another at a distance dependent on the width of the oven chamber. The leveller bar includes at least three supporting elements which extend over an entire length of the oven chamber. The three supporting elements are arranged as an open trusswork-like construction. The open trusswork-like construction has a triangular cross-section including two lower supporting elements arranged at the same level and an upper supporting element located centrally there above.
The three supporting elements may preferably be provided to form an equilateral or isosceles cross-section of the leveller bar with a vertical symmetrical plane. The supporting elements are preferably interconnected in a longitudinal direction at regular distances through horizontal lower transverse braces and/or through connecting braces pointing obliquely upward to the supporting element. The supporting braces may be arranged diagonally between the lower supporting elements and/or the upper supporting element, between two supporting braces each. The supporting elements and/or the braces may each be provided with a closed cross-section. The supporting elements and braces may be provided with the same and/or equally sized cross-section. All supporting elements and braces may consist substantially of commercial-type tubes with a round or square cross-section.
The leveller bar which is the subject of this invention mainly represents a trusswork girder of a triangular cross-section. This only blocks the oven free space during coal levelling by approximately 25%. Thus a clogging of the oven free space with coal is largely prevented and the charging gases evolving on coal charging can be discharged unrestrictedly in the longitudinal oven direction to the relevant points of suction. Moreover, the trusswork-like design and construction comprised of transverse b
REFERENCES:
patent: 1937734 (1933-12-01), Underwood
patent: 5176489 (1993-01-01), Schroter
Thyssen Still Otto Anlagentechnik GmbH
Yildirim Bekir L.
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