Filtration equipment with filtrate recovery process
US5681465A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/0484
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a filtration equipment with a filtrate recovery process, in order to achieve reduction in recovery time of suspension in a tank and allow sludge such as filtration aid to be exfoliated readily from filtration elements and discharged, pressurized water is introduced into the tank which includes tubular filtration elements and a plate element provided at upper and lower locations thereof to recover the suspension as filtrate, and pressurized gas such as air or carbon dioxide is introduced into the tank from the suspension side so that water remaining on the suspension side is discharged from the tank by the pressurized gas, whereafter sludge is exfoliated from the filtration elements and then discharged to the outside of the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.