Filtration apparatus with integral drying by electromagnetic radiation
US4979315A · kind A · utility
7Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Aug 2, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B5/041
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Subsequent to formation of a filter cake upon the surface of belt and further vacuum filtration (via vacuum trays), the cake passed below and is covered by an impervious sheet, and is dried by application of radiation, e.g. microwaves, radio waves, through the sheet, along with further evacuation (via vacuum trays) below the sheet. Because the cake is under suction pressure, the evaporation temperature of the filtrate is lowered to a level which will not adversely affect the cake, and which can be reached very rapidly by application of this form of radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.