Optimized process for the preparation of olefins by direct conversion of multiple hydrocarbons
US6420621B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 19, 1998 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Oct 19, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/923
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for hydrocarbon conversion to prepare lower olefins such as ethylene, propylene, etc., and light aromatics by bringing hydrocarbons into contact with a solid granular catalyst. In order to optimize the reaction conditions and product structure and save the capital and operating costs, a piston flow reactor is used in this process and multiple groups of feed inlets, which allow hydrocarbons with different properties to enter the device from different feed inlets and proceed pyrolysis under different operation conditions, are set on the reactor. This process is usable for individual pyrolysis or co-feed pyrolysis of hydrocarbons from refinery gases, liquid hydrocarbons, to heavy residues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.