Refrigeration – Processes – Circulating external gas
Patent
1982-06-21
1984-12-04
Sever, Frank
Refrigeration
Processes
Circulating external gas
62 28, 62 30, 62 31, 62 34, 62 39, F25J 302
Patent
active
044862091
ABSTRACT:
The gaseous mixture to be split is dehydrated and condensed under a high pressure by sending the gases, separated in a first separator (4), to the first stage of an expansion turbine (16) and the condensates are sent to a fractionating column (49), the gases exiting the first stage of the turbine are mixed with the gases exiting a second separator (19), said mixture being sent to a third separator (26) the bottom liquid whereof is sent to the column (49), and the separated gas is mixed with the head gas of the column (49), whereafter it is cooled and sent to a medium-pressure fourth separator (32). The gas coming from the latter separator (32) feeds the second stage of the turbine (16) while the condensate is admixed with the gas discharged from the second stage and sent to an ultimate low-pressure separator (41) wherefrom the condensate is sent to the column (49) head and the residual gas is cooled and compressed (43, 44), the condensates being recovered from the bottom of the column (49).
REFERENCES:
patent: 3702541 (1972-11-01), Randall
patent: 4163652 (1979-08-01), Gazzi et al.
patent: 4203741 (1980-05-01), Bellinger et al.
Bellitto Gianfranco
Fabbri Cesare
Failla Biagio
La Mantia Giuseppe
Sever Frank
Snamprogetti S.p.A.
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