One small but signKicant source of N20 is that of adipic acid Levels o~ N~O are found to be increasing bringing with it increased concern for itsĪccumulation. O analogous in affect to carbon dioxide but far more potent. To ozone layer depletion, and in part from its acting as a greenhouse gas, The levels associated with such 'naturalN emissions are not an environmentalĬoncern, a concern which arises in part from its relatNe unreactivity contributing Although ~rmed in nature from bactsrial action in soils and oceans, Nltrous oxide, N20, frequantly referred to as laughin~ gas, recently hasĥ been increasingly investigated as an undesirable component of gaseousĮmissions. 'PROCESS FOR CONTROLLED N~O DECOMPOSITIC31N Gas stream also contains oxygen at a concentration of at least 0.5 volume The process of any one of Claims 1 to 6 further characterized in that the The process of any one of Claims 1 to 5 further characterized in that theħ. Stream contains N2O at a concentration up to 35 volume percent.Ħ. The process of any one of Claims 1 to 4 where the N2O-containing gas The process of Claim 1, 2 or 3 where the N2O-containing gas streamĬontains N2O at a concentration up to 65 volume percent.ĥ. Has been subjected to an NOX-removal step prior to passage into the N2O-Ĥ. The process of Claim 1 or 2 where the N2O-containing gas stream

Temperatures in the N2O-decomposition zone below Tmax.ģ. (d) any combination thereof, where said algorithm maintains all (c) the amount of cooled effluent gas stream recycled to the N2O. (b) the degree of cooling of the portion of the effluent gas stream, or (a) the rate of passing the N2O-containing gas stream into the N2O. Temperature of the zone controlled by means of a predetermined algorithim using The process of Claim 1 further characterized in that the temperature atĪt least one point within the N2O-decomposition zone is measured and the N2O-decomposition zone so as to maintain all temperatures in theĢ. Into nitrogen and oxygen to afford an effluent gas stream depleted in N2Oī) cooling at least a portion of the effluent gas stream to afford aĬ) recycling at least a portion of the cooled effluent gas stream to the N2O-decomposition conditions with a catalyst effecting decomposition of N2O Tmax, where said N2O-containing gas stream is brought into contact under N2O-decomposition zone, having a permissible maximum temperature of A process for the controlled decomposition of N2O in a gas streamĪ) passing the N2O-containing gas stream into a catalytic

Dimension 5 transdimensional rar files