Liquid-phase adsorption process for removing and concentrating heteroatom compounds in hydrocarbons
US6790344B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2000 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Dec 11, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/4056
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a liquid phase adsorption process for removing and concentrating heteroatom compounds in hydrocarbons (HCH), comprising the steps of adsorption, copurging and regeneration. In the adsorption step, a liquid hydrocarbon stream is fed to an adsorber, which adsorbs HCH and returns adsorption effluent. In the copurging step, HCH, which are extracted from the previous regeneration, are applied to the adsorber, displacing the copurging effluent. In the regeneration step, a polar solvent is flowed through the adsorber, purging HCH. Most of the HCH are then set aside for use in the next copuring step, while a small amount of the HCH are taken out from the process as HCH product. The present invention is economically advantageous in effectively removing HCH from hydrocarbon streams and increasing the concentration of HCH within an HCH product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.