Inert gas generators

Chemical Incompatibility Hazards While N2 and C02 may act as inerts with respect to many combustion reactions, they are far from being chemically inert. Only the noble gases (eg., Ar and He) can, for practical purposes, be regarded as true inerts. Frank (Frank, Inerting for Explosion Prevention, Proceedings of the 38th Annual Loss Prevention Symposium, AIChE, 2004) lists a number of incompatibilities for N2, C02, and CO (which can be present in gas streams from combustion-based inert gas generators). Notable incompatibilities for N2 are lithium metal and titanium metal (which is reported to burn in N2). C02 is incompatible with many metals (eg., aluminum and the alkali metals), bases, and amines, and it forms carbonic acid in water,... 

Research Centers (IUCRC), 24 395 Inelastic mean free path (IMFP), 24 87 Inert fluids, 11 877 properties of, 11 879 Inert gas dilution, 11 456 Inert gases, 13 456 17 376-377. See also Helium- group elements Noble gases narcotic potency and solubility of, 17 377 Inert gas generators, 17 280 Inertial confinement fusion targets, microcapsules as, 16 460 Inertial impaction, in depth filtration theory, 11 339... 

In a comparative cost analysis of the electron vs. thermal curing stystems, a maintenance cost should be assigned to each system. In the case of the eb unit, it is about one dollar per hour for thermal ovens of this size, it is of the same order. Water costs for the inert gas generator are not included, but would add about 400/hr. 

Epstein, Kostrin, and Alpert (1978). The feedstock was pyrolyzed in a 0.5-m ID fluid-bed reactor containing sand and an inert gas generated from compressed air-natural gas combustion with a slight excess of air (about 0.2 to 0.6%). The fluidizing velocities were 0.3 to 1 m/s. The products were low-energy gas (3.89-11.78 MJ/m- (n)), pyrolytic oil (23.3-27.9 MJ/kg), and charcoal. Feed rates were 50-200 kg/h. The moisture contents of the feedstocks were not specified. The balance of the yield for each feedstock is water. 

Table 12-17 Operating Data for Inert-gas Generator with Molecular-Sieve Gas Purification (Clark, 1958) ...

Beaver, E. R., Graham, T. E., Johannessen, T., and Kvivik, H., 1986, Inert Gas Generation Systems for Offshore Platforms, Energy Prog., September, pp. 149-154. 

Internal combustion engines and turbines Air compressors Inert gas generators Forced draft furnaces Electrical equipment boxes Occupied buildings... 

Dry Nitrogen Seal. The dry gas seal for the offshore platforms and LNG terminals use portable inert gas generators to reduce the emission of the greenhouse gases like methane. Compact membrane systems have been designed by various vendors for use in these hazardous environments. 

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