| 摘要 |
<p>1,200,390. Oxidation of sulphide compounds. UNIVERSAL OIL PRODUCTS CO. 22 Dec., 1967 [27 Dec., 1966], No. 58290/67. Heading C1A. A process for the oxidation of soluble sulphides wherein an aqueous solution of said sulphides together with oxygen is introduced into a reaction zone containing a bed of solid oxidizing catalyst capable of catalysis of the oxidation of sulphides when oxygen is the oxidizing agent, and wherein said solution and said oxygen are contacted with the catalyst under oxidizing conditions such that elemental sulphur is produced and tends to be deposited on and to deactivate the said catalyst is characterized in that the build up of deposited sulphur on said solid catalyst is eliminated by contacting said catalyst with a sulphur solvent under conditions to remove the resulting liberated sulphur from the catalyst, thereby decreasing catalyst deactivation. The sulphide solutions may be waste solutions from the petroleum or chemical industries in an aqueous, alcoholic, or polar solvent. The catalyst may be the phthalocyanine of Fe, Co, Ni, Mo, Mn, or W or the sulphide of Fe, Co, or Ni, and may be composited with a carrier material such as alumina, charcoal, or other highly porous inorganic material (a list is given) by conventional means. The solvent may be CS 2 or any suitable organic solvent (a list is given) preferably immiscible with water, benzene toluene and xylene being the most preferred solvents. The oxygen may be supplied pure or diluted with carrier gases, in approximately the stoichiometric amount required for effecting the desired conversion. Following the oxidation at a temperature of 0‹ to 200‹ C. the sulphur is separated from its solvent as by distillation or crystallization and the solvent may be recycled.</p> |
