Mixed immiscible liquids vacuum, separation, and disposal method and system (Mod 1)
US7172688B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 8, 2003 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Oct 27, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D17/085
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system to collect by vacuum conveyance, separate, and discharge two mixed immiscible liquids with different specific gravities comprising a prefilter vessel 200, a vacuum tank 100, an optional heavy phase intermediate separation stage 40, and an optional light phase intermediate separation stage 30. Vacuum tank 100 is under a constant regulated vacuum, which sucks mixed immiscible liquids with different specific gravities from their respective remote source(s) through conduit(s) connected to vacuum tank 100. Collection conduits can have manually, mechanically, or electro-mechanically controlled valves at their source ends. Any grit, sediment, particles, and/or floatable debris in the collection conduits is first removed, and then any entrained air in the mixed liquid stream is removed, from the mixed liquid stream prior to undergoing any phase separation stages. Initial phase separation occurs automatically in vacuum tank 100 without any phase interface detection devices. Vacuum tank 100 provides quiescent conditions for gravity separation of mixed immiscible liquids. Gravity separation is further enhanced by low grade dissolved air flotation separation which is induced by the va…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.