Process for catalytically reducing NO contained in a gas
US4847054A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1987 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Dec 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/8628
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process of catalytically reducing NO contained in a gas which contains SO.sub.2. The NO is reduced with NH.sub.3, which is admixed to the gas which contains SO.sub.2 and NO. The mixture is supplied to the catalyst at a rate of 0.2 to 20 standard liters per minute and per gram of catalyst and is reacted with the latter in a fluidized bed at a temperature between 185.degree. and 500.degree. C. and under normal pressure. The catalyst has a particle size between 0.1 and 3 mm and is composed of an acid support and an active component, which consists of V.sub.2 O.sub.5, MnO.sub.2, CuO, Fe.sub.2 O.sub.3, NiO and/or Y.sub.2 O.sub.3 and has been applied to the support in a quantity of 0.5 to 20% by weight. It is proposed that part of the catalyst is removed from the fluidized bed and is regenerated and returned to the fluidized bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.