Asphalt oxidation process using liquid jet ejection
US9447327B2 · kind B2 · utility
3Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2014 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Apr 17, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a process for increasing the softening temperature of asphalts by use of liquid jet ejector with a diptube connected to the discharge connection of the liquid jet ejector for ejecting an air/asphalt mixture below a liquid level in an oxidizer vessel. The liquid jet ejector is used as both an air compressor and an air/oil mixer. The liquid jet ejector motive fluid is hot asphalt and the entrained vapor is air. The combined liquid jet ejector with a diptube process provides for an improvement in asphalt air blowing efficiency by requiring less cumulative air to produce a given asphalt softening temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.