Automatic dewaxing filter washing system and method
US5213696A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 23, 1991 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Dec 23, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S208/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is an automatic filter cleaning system which includes a solvent dewaxing filter which removes wax from a wax mix slurry and provides a filtrate. Status control apparatus is connected to the filter for affecting the operational status of the filter. Drain apparatus responsive to a control signal controls draining of the filter. Cleaning apparatus is also connected to the filter. A control network connected to the status apparatus, the draining apparatus and the cleaning apparatus controls those apparatus in a manner so as to allow selective changing of the status of the filter from an operational state to a down state to automatically drain the filter and clean the filter while the filter is in the down state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.