Rotary vacuum precoat filter
US4303524A · kind A · utility
11Cited by
10References
10Claims
0Family size
Inventors
Key dates
| Filing date | May 28, 1980 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | May 28, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D35/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved rotary vacuum precoat filter apparatus comprises a nozzle positioned for spraying a displacing liquid on the outer surface of the filter cake. Connected to the nozzle is a supply conduit for delivering the displacing liquid under pressure to the nozzle. Included along the supply conduit is a temperature control for regulating the temperature of the displacing liquid. The temperature of the displacing liquid is regulated for providing a spray of the displacing liquid about the temperature of the filter cake. Such temperature regulation minimizes thermal shock to the precoat of filter aid forming the filter cake.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.