Steam-cracking in a fluid bed reaction zone

Details Steam-cracking in a fluid bed reaction zone Steam-cracking in a fluid bed reaction zone

1988-05-11

1991-08-13

Mc Farlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 72, 208 99, 208130, 208132, 208155, C10G 932

Patent

active

050393952

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.

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