Apparatus for electrostatic filtration of N.sub.2 O.sub.4 for re

Details Apparatus for electrostatic filtration of N.sub.2 O.sub.4 for re Apparatus for electrostatic filtration of N.sub.2 O.sub.4 for re

1985-05-31

1987-04-14

Bascomb, Wilbur

Distillation: apparatus

Apparatus

Systems

202185R, 202200, 202241, 202267R, 55155, 55DIG39, 203 4, 203 41, 203 86, 203DIG2, 204308, 210243, 210446, 423400, B01D 300, B01D 1302, B01D 4600

Patent

active

046576398

ABSTRACT:
An electrostatic filtration apparatus is used to significantly reduce contaminants in N.sub.2 O.sub.4 vapor and liquid at ambient temperatures. The apparatus uses an electret vapor filter having therein a stack of layers of electret material through which the N.sub.2 O.sub.4 must pass. A flow blocking filter is added to the electret liquid filter to insure a sufficient time for removal of contaminants by said electret material. The filter is constructed of chemically inert materials to prevent additional contaminants.

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patent: 3687834 (1972-08-01), Candor
patent: 4139595 (1979-02-01), Vaseen
patent: 4264331 (1981-04-01), Klein et al.
patent: 4308105 (1981-12-01), Schiffers et al.
Jan Van Turnhout et al., "Electret Filters for High-Efficiency and High-Flow Air Cleaning," IEEE Transactions, vol. 1A-17, No. 2, Mar./Apr. 1981, 240-247.
Mahadevan, "Space Fuel Successfully Purified in Lab," Orbiter, vol. 23, No. 17, Aug. 3, 1983.
Mahadevan, Inside R & D, vol. 12, No. 33, Aug. 17, 1983.

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