Patent ID: 7802694

Claim:
A rotatable pressure vessel assembly having a closure, the vessel comprising an enclosed volume of about 30 to about 90 m 3 capable of maintaining an internal pressure of about 10 to about 4200 kPa, a temperature of about 20 to about 200° C. and a relative humidity up to about 100%, and the vessel defining a closure surface that cooperates with a closure to seal the vessel; the closure comprising a circular door, and a split ring locking assembly, wherein the split ring locking assembly comprises a split ring and a means to change the diameter of the split ring, the split ring having a first diameter comprising a locked position and a second diameter comprising an unlocked position, where the first diameter is different than the second diameter; a support frame having a bearing assembly configured to rotatable support the vessel; and a hinge structure coupled to the support frame and the closure, wherein the hinge structure is configured to bring the closure into contact with the closure surface to seal the vessel.