Helical dry screw expander with sealing gas to the shaft seal sy

Details Helical dry screw expander with sealing gas to the shaft seal sy Helical dry screw expander with sealing gas to the shaft seal sy

1993-04-26

1994-09-20

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Vent or non-seal means prevents working and non-working...

418104, 4182011, 277 3, 277 53, F01C 116, F01C 1900, F01C 2102, F01C 2104

Patent

active

053484568

ABSTRACT:
An improved helical dry screw expander particularly suited for cryogenic service and its use in a cryogenic rectification system. The improved helical dry screw expander is particularly advantageous in a cryogenic waste expansion cycle particularly for nitrogen production.

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