Method of optimizing the operation of a xylene separation unit using simulated countercurrent
US7192526B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2003 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Feb 3, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D15/1821
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method of optimizing the operation of a unit intended for separation of the components of a feed (xylenes) by simulated countercurrent in hybrid operating mode.The method allows to minimize the solvent ratio and to maximize the capacity of the separation unit while keeping product specifications such as purity and yield constant. It has been verified that these two objectives cannot be reached simultaneously and it is recommended to operate with a minimum solvent ratio while guaranteeing a high capacity compatible with stable operation of the separation unit. These optimization objectives are reached while keeping good stability around the optimum point thus defined, by using a known operation control process such as the one described in patent EP-875,268 for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.