| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a desulfurizing agent capable of stably desulfurizing a hydrocarbon raw material in a high grade for a long time by a small amount, by adding an aqueous alkali substance solution to a mixture containing a copper compound and a zinc compound. SOLUTION: This method for producing a desulfurizing agent comprises mixing a mixture containing a copper compound (e.g. copper nitrate or copper acetate) and a zinc compound (e.g. zinc nitrate or zinc acetate) with the aqueous solution of an alkali substance (e.g. sodium carbonate or potassium carbonate) under agitation, calcining the obtained precipitates preferably at 270-400 deg.C, adding water to the calcination product, processing the obtained slurry into molded products comprising the copper oxide-zinc oxide mixture, impregnating the molded products with iron and/or nickel preferably in an amount of 1-10 wt.%, further calcining the products, and subsequently hydrogenating the obtained oxide calcination products with a diluted hydrogen gas preferably having a hydrogen concentration of <=6 vol.% at 150-300 deg.C. The copper compound and the zinc compound are preferably mixed in a ratio of 1:(1 to 2.3).</p> |
