| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for producing acrylic acid in a high yield from an acrolein-containing composition, and to provide the acrolein-containing composition. SOLUTION: The method comprises the refining step of removing phenol and/or 1-hydroxyacetone from an acrolein-containing composition and the oxidation step of producing the objective acrylic acid by oxidizing acrolein in the acrolein-containing composition after the refining step. The apparatus for the method comprises a refiner to be used in the refining step and an oxidation reactor for producing the objective acrylic acid by oxidizing acrolein. The acrolein-containing composition is such as to be 0.020 or less in the mass ratio of phenol to acrolein and 0.020 or less in the mass ratio of 1-hydroxyacetone to acrolein. COPYRIGHT: (C)2008,JPO&INPIT
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