Method of cleaning a filter unit, and a filter unit for filtering gas
US6149716A · kind A · utility
28Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Sep 21, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/79
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter unit (1) has a plurality of filter elements (7) extending from a plate (6, 32) which divides the unit into a lower inlet side (9) for gas carrying product and an upper outlet side (8) for filtered clean gas. A cleaning-in-place of the filter elements is performed by supplying cleaning liquid in a sequence of several separate liquid pulses which are mixed with the pressurized gas pulses. The ejection of the individual pulse of pressurized gas is initiated at the earliest simultaneously with or after initiation of ejection of the corresponding pulse of cleaning liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.