Method and apparatus for liquid cryogen pressurization of contai

Details Method and apparatus for liquid cryogen pressurization of contai Method and apparatus for liquid cryogen pressurization of contai

1988-09-08

1990-08-14

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

Liquified gas transferred as liquid

53127, 53432, 53440, 53510, 141 63, 141 82, F17C 702

Patent

active

049476505

ABSTRACT:
Liquid cryogen is added to a container of particulate material (e.g. powder, flakes or granules) immediately before the container is capped as part of a process for pressurizing the container. A liquid cryogen retainer is positioned within the unsealed container above the particulate material, and the flow of liquid cryogen is directed to the retainer to substantially prevent eruption from the container of the particulate material, which may otherwise result when the liquid nitrogen penetrates the particulate material and causes the particulate material to erupt, with an unacceptable loss of the particulate material and of the liquid cryogen.

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