Fluidized bed system for removing particulate contaminants from a gaseous stream
US4973458A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | May 9, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method for removing particulate contaminants, and optionally gaseous contaminants, from a hot gaseous stream where a vessel is provided containing a fluidized bed zone and the gases are passed through the fluidized bed zone containing a fluidized bed of granular media prior to passage of a major portion of the gas through a plurality of first hollow, ceramic, barrier filter elements at least partially disposed in the fluidized bed, and a minor portion thereof through a plurality of second hollow, ceramic, barrier polishing filter elements removed from the fluidized granular media. The plurality of first filter elements are scoured by the granular media to remove collected deposits while fine particulates collected on the plurality of second filter elements are removed by back flushing of a gas therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.