Gas sparging method for removing volatile contaminants from liquids
US5531904A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Mar 20, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00166
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus for removing volatile contaminant compounds from a liquid by sparging a cleaning gas therethrough comprises a volatile contaminant extraction assembly including a hollow porous tube surrounded by an outer jacket defining a gas plenum between the jacket and the porous tube; a contaminated liquid feed assembly including a nozzle for injecting liquid into the porous tube in a spiraling flow pattern around and along the porous tube; a gas-liquid separator assembly including a nonporous degassing tube coaxially aligned with and connected to the porous tube, a separator tube coaxially aligned with and connected to the degassing tube and flaring outwardly in diameter from the degassing tube, and a gas duct coaxially aligned with the separator tube and extending into the separator tube to collect and convey cleaning gas therefrom; a clean liquid collection assembly; and a gas discharge assembly. A method of removing volatile contaminants from a liquid comprises the general steps of introducing a stream of contaminated liquid to the hollow interior of a cylindrical porous tub in a thin film following a spiral flow pattern around and along the wall of the tube; controlling the phys…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.