Catalytic converter
US5480620A · kind A · utility
Inventor
Key dates
| Filing date | Aug 17, 1994 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Aug 17, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/765
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A catalytic converter for converting sulfur dioxide to sulfur trioxide comprising an exterior shell of a heat resistant weldable metal; foundations from which the shell vertically extends; an interior tube of same metal vertically disposed within the shell and defining a passage; the interior tube having i. a first inlet aperture through which the passage receives a first portion of a sulfur dioxide-containing gas from a source of such gas; ii. a second inlet aperture through which the passage receives a second portion of the sulfur dioxide-containing gas; and iii. an outlet aperture; at least one catalyst bed including an annular bed extending fully between the shell and the interior tube; wherein the annular bed is in direct gaseous communication within the shell with the first passage through the outlet aperture; a plurality of axial heat exchange tubes within the interior tube for conducting hot sulfur trioxide-containing gas from the catalyst bed through the heat exchange tubes to effect heat transfer with and to heat the first and second portions of the sulfur dioxide-containing gas and to cool the hot sulfur-trioxide containing gas; structure for directing the hot sulfur tri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.