Closure device for upper head of coking drums

Details Closure device for upper head of coking drums Closure device for upper head of coking drums

1994-06-13

1995-05-23

Woodard, Joye L.

Distillation: apparatus

Apparatus

Elements

196122, 196137, 202250, 202269, C10B 104

Patent

active

054178118

ABSTRACT:
A closure device adapted for attachment onto the upper head of a coking drum to prevent hot vapors escaping during drum decoking operations. The closure device includes a cylindrical-shaped housing having a rotatable ball valve and horizontal elongated stem provided in its lower portion, and a cover unit including a packing gland provided at the housing upper end. A rotatable cutting tool provided within the housing above the ball valve has a drive rod extending upwardly through the cover unit packing gland. During operations, the ball valve is opened and the drive rod and its attached cutting tool can be extended downwardly through the ball valve cylindrical-shaped opening into the coking drum and rotated, so as to cut and dislodge coke deposited in the drum.

REFERENCES:
patent: 380910 (1888-04-01), McGee
patent: 2326525 (1943-08-01), Diwoky
patent: 3143302 (1964-08-01), Carlson et al.
patent: 5259930 (1993-11-01), Barker et al.

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