Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1987-12-17
1990-04-24
Nozick, Bernard
Gas separation
Means within gas stream for conducting concentrate to collector
55131, B03C 100
Patent
active
049196901
ABSTRACT:
Continuous production of ultra-pure helium and neon gases is achieved by utilizing the fact that these gases have the highest ionization and excitation potentials of all chemical substances. The helium
eon gas stream to be purified is excited by, for example, a corona discharge not only to directly ionize some of the impurities but also to produce noble gas ions and metastable atoms. These ions and metastables subsequently collide with and ionize impurities. A polarizing field is used to draw the impurity ions out of the main gas flow and into a subsidiary flow bled from the main flow. In a preferred embodiment, the polarizing field is established between a central rod-shaped anode (13) and a surrounding tubular cathode (10) through which the main gas flow passes. The cathode is made of a porous material so that positive impurity ions can be removed by the radial outwards flow of gas therethrough.
REFERENCES:
patent: 1333790 (1920-03-01), Bradley
patent: 2000020 (1935-05-01), Heinrich
patent: 3154682 (1964-10-01), Hartz et al.
patent: 4313739 (1982-02-01), Douglas-Hamilton
Hewlett--Packard Company
Nozick Bernard
Schuette Richard F.
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