Mercaptan removal using microreactors
US9267083B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2013 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Dec 3, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/70
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Processes are provided herein for producing naphtha boiling range products with a desired sulfur content by reducing the mercaptan content of the naphtha boiling range products after the products exit a hydroprocessing stage. Due to mercaptan reversion, naphtha boiling range products that contain even small amounts of olefins can have a higher than expected sulfur content after hydroprocessing. In order to reduce or mitigate the effects of mercaptan reversion, microchannel reactors (or microreactors) can be placed in a processing system downstream of a reactor that produces a low sulfur naphtha product. The microreactors can include a coating of metals that have activity for hydrodesulfurization. By passing at least a portion of the naphtha product through the downstream microreactors, the mercaptans formed by reversion reactions can be reduced or eliminated, resulting in a naphtha product with possessing a very low sulfur content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.