Refrigeration – Storage of solidified or liquified gas – Storing solidified gas
Patent
1980-05-07
1983-12-27
Capossela, Ronald C.
Refrigeration
Storage of solidified or liquified gas
Storing solidified gas
55 88, 55 89, 62100, 62268, 220 85VR, F17C 1300
Patent
active
044223013
ABSTRACT:
Process and apparatus for recovery of vapor which is contained with air in a space above a volatile liquid which is stored in a container, especially a petroleum distillate or other costly liquid. The process employs the pressure build up due to thermal effects on the space above the volatile liquid to drive the vapor through a heat exchanging region at which a venturi evaporative cooling unit is used to extract heat from the vapor and partially condense the vapor without significant compression. A part of the condensed vapor is recycled to the heat exchanging region and introduced as a spray for a condensation "seeding" effect. The vapor is further cooled after cooling by the venturi evaporative cooling unit in a second and even a third cooling stage; these stages can include use of a conventional refrigeration unit to chill a heat exchanger and an ultra low temperature can be achieved by expanding liquified gas such as nitrogen in an insulated cyclone to achieve high percentage recovery of the vapor.
REFERENCES:
patent: 2471559 (1949-05-01), Dolezal
patent: 2621492 (1952-12-01), Beardsley et al.
patent: 3733838 (1973-05-01), Delahunty
patent: 3800550 (1974-04-01), Delahunty
patent: 3947258 (1976-03-01), Decker
patent: 4010779 (1977-03-01), Pollock et al.
Ladd Richard H.
Watt Robert H.
Wright, deceased Walter S.
Capossela Ronald C.
Hastie William F.
Watt Robert H.
Wright Walter Stockdale
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