| 摘要 |
<p>PURPOSE:To drastically increase the sulfur absorptivity of the above desulfurizing agent by preparing a copper oxide-zinc oxide-aluminum oxide mixture from a copper compd., a zinc compd., and an aluminum compd. by coprecipitation, and reducing the mixture with hydrogen to produce the desulfurizing agent. CONSTITUTION:An aq. soln. of the copper compd., zinc compd., and aluminum compd. and an aq. soln. of sodium carbonate are added dropwise into pure water kept at about 80 deg.C while agitating, hence the compds. are neutralized at a fixed rate, and a mixed slurry is obtained. The formed precipitate is washed, dried at about 110-120 deg.C, compression-molded, and then sintered at about 300 deg.C. The obtained copper oxide-zinc oxide-aluminum oxide mixture is reduced at about 150-300 deg.C in the presence of a gas consisting of 0.5-4vol.% inert gas and hydrogen, and a desulfurizing agent is obtained. The org. sulfur and inorg. sulfur compds. in various gases and oils can be reduced to <=0.1ppb with the desulfurizing agent.</p> |
