Rinsing apparatus in a simulated moving bed adsorption unit, and the use thereof
US6149874A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1997 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jul 10, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D15/1842
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rinsing apparatus used in a simulated moving bed feed adsorption unit includes a plurality of beds of an adsorbent, each being connected by a fluid distribution arrangement comprising a line for distributing fluids to at least one feed inlet. The apparatus includes at least one desorbent (or solvent) inlet, at least one outlet for an extract and at least one outlet for a raffinate. Each is characterized in that each distribution line for each bed comprises at least one rinsing valve, all of the rinsing valves being connected to a line for circulating displaced fluid. The distribution line comprises a fluid circulation pump and a regulator for the flow rate of the fluid delivered by the pump. Each of the rinsing valves is connected to a controller for controlling the opening or closing of said valves. The apparatus is used for the separation of aromatic hydrocarbons containing 8 carbon atoms, and in particular for the production of very high purity para-xylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.