Method for drying sludge
US8387275B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2008 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jul 13, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B2200/18
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for drying sludge comprising the following steps: (a) Dry dehydrated sludge to obtain a carrier for drying sludge (6); (b) Transport the carrier for drying sludge (6) and dehydrated sludge to be dried (1) to a stirring and mixing apparatus (2) for stirring and mixing and thereby obtain mixed sludge; (c) Transport the mixed sludge (3) to a drying apparatus (4) for drying; (d) Repeat steps (b) and (c); characterized in that in said step (d) a portion of the mixed sludge (3) obtained from the stirring and mixing apparatus (2) which is in an amount determined by amount of sludge carrier (6) required for drying is extracted and transported to the drying apparatus (4) for drying and the rest of the mixed sludge is discharged as final product (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.