Shaped catalyst body for the catalytic oxidation of SO2 into SO3

US10307741B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Philipp GRÜNE · Mannheim, DE
• Christian Walsdorff · Ludwigshafen, DE
• Markus Schubert · Ludwigshafen, DE
• Holger Borchert · Offstein, DE
• Jacob Cornelis Van Dorland · Hemsbach, DE
• Jürgen Zühlke · Speyer, DE
• Stefan Lipp · Bad Liebenzell, DE
• Michael Kramer · Muscatine, US

Key dates

• Filing date: Mar 16, 2016
• Grant date: Jun 4, 2019
• Expiry date: Mar 16, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B17/79
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to shaped catalyst bodies for the oxidation of SO2 to SO3, which comprise vanadium, at least one alkali metal and sulfate on a silicon dioxide support material, wherein the shaped body has the shape of a cylinder having 3 or 4 hollow-cylindrical convexities, obtainable by extrusion of a catalyst precursor composition comprising vanadium, at least one alkali metal and sulfate on a silicon dioxide support material through the opening of an extrusion tool, wherein the opening of the extrusion tool has a cross section formed by 3 or 4 partly overlapping rings whose midpoints lie essentially on a circular line having a diameter of y, wherein the rings are bounded by an outer line lying on a circle having an external diameter x1 and an inner line lying on a circle having an internal diameter x2.