| 摘要 |
A process for the production of ethylene oxide and recovery of nitrogen comprises feeding ethylene and air to a reaction zone, reacting the ethylene with the oxygen to produce ethylene oxide, withdrawing a gaseous effluent containing ethylene oxide, nitrogen, carbon dioxide and combustible carbonaceous material from the reaction zone, separating ethylene oxide from the gaseous effluent, e.g. by water scrubbing, adding oxygen or combustible carbonaceous material to residual gaseous effluent in an amount sufficient to bring the ratio of oxygen to combustible carbonaceous material to within 20% of the stoichiometric ratio for complete conversion of the oxygen and combustible carbonaceous material to carbon dioxide and water, catalytically reacting the mixture in the vapour phase at a temperature of at least 600 DEG F. to convert substantially all the combustible carbonaceous material and oxygen to carbon dioxide and water, separating the carbon dioxide and water and recovering the residue which is substantially nitrogen. The examples include the use of a supported silver catalyst, chlorinated hydrocarbon inhibitor, temperature 150 DEG to 400 DEG C. U.S.A. Specifications 2,693,474, 2,752,362, 2,785,186, 2,777,862, 2,766,861 and 2,814,628 are referred to.ALSO:A process for the production of ethylene oxide and recovery of nitrogen comprises feeding ethylene and air to a reaction zone, reacting the ethylene with the oxygen to produce ethylene oxide, withdrawing a gaseous effluent containing ethylene oxide, nitrogen, carbon dioxide and combustible carbonaceous material from the reaction zone, separating ethylene oxide from the gaseous effluent, adding oxygen or combustible carbonaceous material to residual gaseous effluent in an amount sufficient to bring the ratio of oxygen to combustible carbonaceous material to within 20% of the stoichiometric ratio for complete conversion of the oxygen and combustible carbonaceous material to carbon dioxide and water, catalytically reacting the mixture in the vapour phase at a temperature of at least 600 DEG F. to convert substantially all the combustible carbonaceous material and oxygen to carbon dioxide and water, separating the carbon dioxide and water and recovering the residue which is substantially nitrogen. U.S.A. Specifications 2,693,476, 2,752,362, 2,766,861, 2,777,862, 2,785,186 and 2,814,628 are referred to. |
