Compact ceramic tube filter array high-temperature gas filtration
US4904287A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Dec 22, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2273/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a hot gas filter system employing ceramic tube filters, or candles, in which the ratio of filter surface to system cross-section can exceed 50. The system includes a pressure vessel having an internal wall dividing the pressure vessel into first and second vessel portions, a gas inlet for directing a hot gaseous stream having particulate matter entrained therein into the first portion and a gas outlet for exhausting a filtered gaseous stream from the second vessel portion, a plurality of gas filter units supported by the internal wall and extending into the first vessel portion. Each filter unit includes a central gas plenum having an outer wall with one end of the outer wall attached to the internal wall, and a plurality of filter modules supported by the central gas plenum. Each module includes a ceramic tube, and support structure extending from the central gas plenum for supporting the ceramic tube and communicating gas between the ceramic tube and the central gas plenum. A backflow of gas is provided through the plurality of gas filter units to the ceramic tubes for periodically dislodging particulate matter from the outer surface of the tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.