Method for removing a filter cake
US5178777A · kind A · utility
5Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Nov 18, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D33/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method for removing a filter cake from a liquid-saturated suction surface, when the liquid in the creation of the filter cake is sucked through the filter surface of the filter element. According to the invention, on the filter surface of the filter element (1) there is formed a liquid film (3) by means of reversed pressure effected through the filter element (1). Essentially immediately after the creation of the liquid film, at least one gas blowing is directed to the filter surface of the filter element (1) in order to detach the filter cake (2) located on the filter surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.