Pressure vessel closure device

Details Pressure vessel closure device Pressure vessel closure device

B - Operations, Transporting

01

J

B01J 3/03 (2006.01) C10B 25/10 (2006.01) C10B 33/00 (2006.01) F27D 1/18 (2006.01)

Patent

CA 2093852

26 Abstract of the Disclosure There is disclosed a flange or pressure vessel closure device and method for deheading a coke drum. The coke drum deheading device has an annular retaining element spring biased from a lower flange of a coke drum, and a plurality of hooks which extend from the retaining element to engage a cradle holding the bottom head against the flange. When it is desired to disengage the head from the flange, the hook retaining element is moved by a first set of cylinders toward the flange to release tension from the hooks so that they can be disengaged from the bottom head by pivoting them outwardly using a second set of cylinders or other hook pivoting means. The bottom head can then be disengaged from the flange, lowered and moved laterally away from the coke drum on a hydraulic table.

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