Method and device for capturing fine particles by trapping in a solid mixture of carbon dioxide snow type
US6821429B2 · kind B2 · utility
3Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Jul 23, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/66
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a method for capturing very fine particles present in a fluid flux in liquid, gaseous or supercritical state and a device therefor. The method is characterized in that it comprises steps which consist in: causing said flux to pass through a filtering element (13); stopping the emission of said flux; countercurrent clearing of the filtering material (31) with a carbon dioxide flow under pressure, so as to drive the particles deposited on the filtering material (31); countercurrent expanding of the flux, so as to trap the particles within a solid carbon dioxide snow-type mixture formed during its expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.