Cold box and cryogenic plant including a cold box

Details Cold box and cryogenic plant including a cold box Cold box and cryogenic plant including a cold box

2004-10-25

2008-03-11

Doerrler, William C (Department: 3744)

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

C062S907000

Reexamination Certificate

active

07340921

ABSTRACT:
This disclosure discusses providing safer and more accessible insulating cold boxes for cryogenic equipment. A cold box of the current invention includes a housing partially extending out of the cold box jacket wherein equipment that may need to be accessed can be located. The housing includes a breakaway barrier between the main cold box and the external housing to allow overpressures to be relieved into the cold box. Cold boxes may contain cryogenic columns, sections of cryogenic columns, distillation columns, mixing columns, storage vessels, pressure vessels, heat exchangers, and combinations thereof. The housing may contain auxiliary elements such as rotating equipment, pumps, turboexpanders, instrument devices, valves, and piping. Placing auxiliary elements in a housing outside the main cold box allows for safer access to cryogenic equipment.

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“Tonnage Nitrogen Generation for Oil and Gas Enhanced Recovery in the North Sea”, by Goldstone and Ralston, presented in the Annual Report, Session 6 of the 9thContinental Meeting of Gas Processors Association, 1992.

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