Steam-cracking in a fluid bed reaction zone
US5039395A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1988 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | May 11, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G51/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention is directed to steam-cracking in a fluid bed reaction zone, of a charge of hydrocarbons having at least two carbon atoms per molecule. In this process the charge (3) circulates with steam (2) and inert solid particles, heated at a temperature T.sub.1 from 500.degree. to 1,800.degree. C., through at least one enclosure (7). A gas effluent is separated from the particles in the enclosure and fed to a quenching zone (8) opening into said enclosure. Said effluent is circulated with cooling second solid particles which are at a temperature T.sub.2 lower than T.sub.1 and at most equal to 800.degree. C. A steam-cracking effluent is then recovered through line (15). This process can be used in petrochemistry, particularly for producing ethylene and propylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.