Separation processes using divided columns
US9724619B2 · kind B2 · utility
4Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Dec 2, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D3/322
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The claimed invention provides a technique wherein the two column system is combined into a single column. The light components are concentrated on the prefractionation side (feed side) of the column, where they are removed as an overhead top product. The middle boiling components are removed as an overhead product on the opposite side of dividing wall. For the same product specifications, top divided column requires substantially lower capital and operating cost than a conventional two-column system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.