摘要 |
<p>The production of acrylic acid (I) and/or its esters comprises; (a) catalytic gas-phase oxidation of propene and/or acrolein to give a gaseous product containing (I), (b) absorption of the reaction product with a solvent, (c) distillation in a column to give crude (I) and solvent, (d) purification of (I) by crystallisation and optionally (e) esterification of crystallised (I). Also claimed is an apparatus for the process, comprising reactor(s) for stage (a), an absorption column, a distillation column, dynamic crystalliser(s) and static crystalliser(s), and container(s) for intermediate storage.</p> |
申请人 |
BASF AG, 67063 LUDWIGSHAFEN, DE |
发明人 |
MACHHAMMER, OTTO, DR., 67281 KIRCHHEIM, DE;DOCKNER, TONI, DR., 67149 MECKENHEIM, DE;ENGERT, GERD-JUERGEN, DR., 67069 LUDWIGSHAFEN, DE;PROLL, THEO, DR., 67098 BAD DUERKHEIM, DE |