Charging hole cover seal

Details Charging hole cover seal Charging hole cover seal

1981-12-28

1983-06-21

Garris, Bradley

Distillation: apparatus

Apparatus

Elements

202251, 202269, C10B 2520, C10B 2524

Patent

active

043892841

ABSTRACT:
A charging hole cover sealing structure in which a disc-shape cover is superimposed over the charging hole and an annulus-shaped charging hole frame. The frame has on its top surface a peripheral medial groove and an inner planar surface. The cover has a lip with a terminal downwardly projecting peripheral tongue that engages the medial groove on the frame as the lip abuts its inner planar surface so that dual gas tight seals are established. A primary continuous seal is established at the point where the lip abuts the inner planar surface on the frame. The groove is filled with a heat resistant particulate material which will cause any coke oven gases escaping through this primary seal to be condensed so as to form a particularly effective sealant material made up of a mixture of the resultant tarry condensation with the particulate material. A secondary seal is thereby established between the tongue of the cover and the lid, and the need to manually apply a sealant composition to the charging hole cover is avoided.

REFERENCES:
patent: 1124607 (1915-01-01), Gardner
patent: 2203698 (1940-06-01), Schmidt
patent: 3689369 (1972-09-01), Tucker
patent: 3900369 (1975-08-01), Irie et al.
patent: 4145259 (1979-03-01), Leumann
patent: 4186056 (1980-01-01), Muller et al.

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