Method for producing aromatic hydrocarbons and aromatic hydrocarbon production plant
US9656232B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 25, 2011 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Mar 25, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for producing aromatic hydrocarbons, the method including: (a) bringing a feedstock oil such as an LCO into contact with an aromatic production catalyst to obtain a reaction product containing aromatic hydrocarbons, (b) separating the reaction product into a tower top fraction and a tower bottom fraction using a distillation tower, (c) separating the tower top fraction into a crude aromatic fraction containing an LPG fraction, and an off-gas containing hydrogen, (d) separating the crude aromatic fraction containing an LPG fraction into an LPG fraction and a crude aromatic fraction, (e) separating the off-gas containing hydrogen into hydrogen and an off-gas, and (f) using the hydrogen obtained in step (e) to hydrotreat the crude aromatic fraction, thereby obtaining an aromatic fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.