Method for the vacuum distillation of a liquid product, particularly oil stock, (variants) and system for realizing the same
US6346173B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 6, 2001 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Apr 6, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/11
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention essentially relates to a method for vacuum distillation of liquids that includes feeding a polar liquid into a vacuum-producing liquid-gas jet apparatus as a motive liquid if evacuation of a nonpolar gas-vapor medium is to be effected. Further, the method includes condensing the nonpolar gas-vapor medium, forming a gas-liquid mixture, disengaging a gaseous phase from the mixture, forming a liquid emulsion containing the polar liquid and a nonpolar condensate, separating the emulsion into continuous layers, withdrawing the nonpolar condensate and recycling the polar liquid by pumping it back into the liquid-gas jet apparatus. A nonpolar liquid is to be used as the motive liquid of the liquid-gas jet apparatus if evacuation of a polar gas-vapor medium is required. There is another variant of the method applicable when an evacuated gas-vapor medium contains both polar and nonpolar components. As distinct from the previous variants, in this case, the method comprises forming a liquid emulsion containing a polar liquid, a polar condensate and a nonpolar condensate, mixing of the polar substances and forming a polar liquid medium, separation of the emulsion into layers of t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.