Accession Number : ADD012885
Title : Apparatus for Electrostatic Filtration of N2O4 for Removal of Solid and Vapor Contaminants.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Personal Author(s) : Mahadevan,Parameswar ; Chang,Elfreda T ; Breisacher,Peter
Report Date : 14 Apr 1987
Pagination or Media Count : 5
Abstract : The instant invention sets forth a process and an apparatus for removing contaminants from Nitrogen tetroxide using an electret vapor filter during distillation and an electret liquid filter. Warmed Nitrogen tetroxide in a still creates a high pressure vapor phase thereover. Because of the high pressure, the vapor of Nitrogen Tetroxide and contaminants therein is forced through an electret vapor filter that removes iron contaminants but also NOC1 and volatile iron contaminants. The filtered vapor flows into a cooled receiver wherein the vapor of N2O4 condenses. One object of the present invention is to provide an apparatus for moving contaminants from N2O4. Another object of the present invention is to provide an apparatus to remove colloidal, particulate, and volatile tile iron contaminants from N2O4. Another object of the present invention is to provide an electret vapor filter for removing contaminants. Another object of the present invention is to provide a filtration process that is carried out at about ambient temperatures.
Descriptors : *PATENTS, *FILTRATION, *CONTAMINANTS, *ELECTROSTATIC PRECIPITATION, *LIQUID ROCKET PROPELLANTS, *NITROGEN OXIDES, TEMPERATURE, DISTILLATION, ELECTRETS, FILTERS, VAPORS, HIGH PRESSURE, VAPOR PHASES, NITROGEN, COOLING, RECEIVERS, LIQUID FILTERS, INVENTIONS, CONTAMINANTS, MOTION, REMOVAL, SOLIDS, ROCKET FUELS, PURIFICATION, GASEOUS ROCKET PROPELLANTS, PERFORMANCE(ENGINEERING), FUEL CONTAMINATION, GAS FILTERS, TETROXIDES, VOLATILITY, IRON
Subject Categories : Liquid Rocket Propellants
Industrial Chemistry and Chemical Processing
Distribution Statement : APPROVED FOR PUBLIC RELEASE