Process and installation for recovery and purification of ethylene produced by pyrolysis of hydrocarbons, and gases obtained by this process
USRE40124E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2004 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Mar 31, 2024 |
Classification
- Technology area (CPC —)General
Abstract
A process for the high-yield recovery of ethylene and heavier hydrocarbons from the gas produced by pyrolysis of hydrocarbons in which the liquid products resulting from the fractionated condensation of a cracking gas for the recovery of almost all the ethylene, are supplied to a distillation column, called a de-ethanizer, at different intermediate levels. At the top of the de-ethanizer the vapor of the column distillate is treated directly in an acetylene hydrogenation reactor, the effluent containing virtually no acetylene being separated by a distillation column called a de-methanizer, into an ethylene- and ethane-enriched tail product, while the head product is recycled by compression or treated for subsequent recovery of ethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.