Process and device for simulated moving bed separation with a reduced number of large diameter valves
US7582207B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2007 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Jan 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a simulated moving bed (SMB) separation device and process comprising a column, beds Ai of adsorbent separated by plates Pi with a single distribution and extraction network for fluids, in particular feed F, desorbant D, raffinate R and extract E, and a plurality of two-way valves for distribution of said fluids, said valves being limited in number and in particular with dimensions that are smaller than in the prior art. According to the invention, the column is divided into a plurality of sectors Sk with 2 superimposed plates, each sector Sk comprising an external principal bypass line Lk connected to each plate P1 of Sk via a large diameter plate valve V1 and an external secondary bypass line Mk comprising a small diameter valve VMk connected to the adjacent sector Sk−1. Each line Lk comprises a flow limitation means, and is connected to each of the fluid networks F, D, R, E via a single large diameter valve for sequential supply or withdrawal of the corresponding fluid F, D, R or E to or from the sector Sk under consideration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.