| 摘要 |
1314613 Ethylene oxide HALCON INTERNATIONAL Inc 8 July 1970 [10 July 1969] 33146/70 Addition to 1213483 Heading C2C Ethylene oxide is produced by the continuous controlled oxidation of ethylene using molecular oxygen in the presence of a silver catalyst and at least 10 mol per cent of ethane in the reaction mixture and a controlled amount of an inhibitor selected from ethylene dichloride (K = 1), vinyl chloride (K = 15), dichlorobenzene (K = 0À2), monochlorobenzene (K = 1), dichloromethane (K = 2), chlorinated phenyls, biphenyls, polyphenyls (K = 5), the amount of inhibitor continuously added to the oxidation reaction mixture being between 20 and 300 per cent of the amount determined from the equation where I is the inhibitor addition rate expressed in ppm by volume of inhibitor added to the oxidation rectaion mixture, K is a constant which depends on the actual inhibitor used and the values of which are given in brackets above and X is a factor determined by the equation wherein T = reaction outlet gas temperature expressed in degrees Kelvin, B = mol per cent ethane and E = mol per cent ethylene in the oxidation reaction mixture, F = flow rate expressed as lbs./hr./cu. ft. of catalyst, P = reaction pressure in p.s.i.a. Preferred values are T in the range 423-573‹ K., E = 4-40%, F is between 100-1000 lbs./hr. cu. ft. catalyst, P is 200-450 p.s.i.a. Examples are furnished. |
