B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/3
B01D 59/20 (2006.01) B01D 59/18 (2006.01)
Patent
CA 1058097
ABSTRACT A method for the continuous multiplied enrichment Or gaseous iso- topes of heavy elements by means of gravity-and expanding pressure fields and gas circulation is disclosed. The method is carried out in a pipe or tube with a smooth inner surface and having an inlet and first and second discharge means One or several nozzles are arranged adjacent the inlet and extend in a plane perpendicular to the pipe axis so as to discharge tangentially rel- ative to the inside pipe circumference. The first discharge means is formed by annular slots situated at the inner circumference of the pipe or it is formed in the region of the pipe axis. In an alternative embodiment of the pipe, the first discharge means is in the form of openings extending tang- entially from the inner pipe circumference. The second discharge means is spaced from the first discharge means and is in the form of an annular aper- ture adjacent the pipe axis and in the vicinity of the inlet. According to the inventive method, a gaseous isotope mixture to be separated is forced under pressure through the nozzles and thus into the pipe, whereby a rotary flow of the gaseous mixture builds up within said pipe which is propelled by subsequently incoming amounts of gas mixture. The rotary flow extends to the first discharge means and also generates a suction force within the pipe adjacent the inlet. The gas mixture, due to the rotary flow, is divided into a first portion enriched with heavy isotopes due to the occur- ing centrifugal forces and a second portion containing lighter isotopes. The first portion exits at least partially through the first discharge means of the pipe while the second portion flows in opposite direction towards the second discharge means, whereby the second portion, at least partially, is sucked in by the suction force and thus is caused repeatedly to circulate, thereby increasing the enrichment effect.
187425
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