| 摘要 |
<p>The purpose of the present invention is to provide a method for decomposing sulfur trioxide generated from a nuclear hydrogen production process. Thus, the present invention provides a method for decomposing sulfur trioxide generated from a nuclear hydrogen production process, the method comprising the steps of: filling an iron(III) oxide catalyst in a reactor, and then supplying sulfur trioxide to the reactor at a space rate of 0.5 to 1.0 hr^-1 with respect to the iron(III) oxide catalyst (step 1); and heating the reactor to perform a decomposition reaction of SO_3 -> SO_2 + 1/2O_2 (step 2). The method for decomposing sulfur trioxide according to the present invention can raise the conversion rate of sulfur trioxide and improve the durability of the catalyst using an iron(II) oxide catalyst under the presence of low-concentration sulfuric acid and high temperature. In addition, in a sulfuric acid concentration process, low-concentration sulfuric acid operation consumes less thermal energy than high-concentration sulfuric acid during the concentrating, heating, and decomposing of the sulfuric acid, thereby skipping a concentrating process or low-concentration concentrating process of the sulfuric acid and thus improving the overall thermal efficiency and economical efficiency.</p> |
