Method of optimizing feed concentration in a sedimentation vessel
US8123955B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 5, 2009 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | May 10, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D21/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A feed system is used in a sedimentation vessel. The feed system includes an inlet for receiving a quantity of feed slurry and an outlet for delivering the feed slurry to a separation zone within the sedimentation vessel. The feed slurry includes a mixture of solids and liquids that are to be separated in a separation zone within the sedimentation vessel. An airlift pump is used to cycle at least a portion of either the separated solids or the separated liquids from the separation zone and return it to the feed system. This returned portion mixes with the feed slurry and may operate to dilute the feed slurry to a concentration for optimal separation. Additionally, feed conditioning chemicals may be mixed into the feed slurry prior to or after the mixing of the feed slurry with the returned portion of the separated products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.