Enitecnologie S.p.a.

Enichem S.p.a

Polimeri Europa S.p.a.

Massimo Romagnoli

Carlo Perego

Paolo Pollesel

Maria Angela Mantegazza

Stefano Peratello

Massimo Soprani

Sergio Sgorlon

Process for the regeneration of exhausted catalysts, containing one or more calcium aluminates, for steam cracking reactions, comprising treating said exhausted catalysts in a stream of water vapour at a temperature ranging from 700 to 950&#xb0; C., preferably from 720 to 850&#xb0; C., and at a pressure ranging from 0.5 to 2 atm.

Process for the regeneration of catalysts for steam cracking

Process for the production of propylene starting from mixtures of hydrocarbons, prevalently olefins, the above hydrocarbons having a boiling point ranging from &#x2212;15&#xb0; C. to +80&#xb0; C., preferably from &#x2212;12&#xb0; C. to +60&#xb0; C., which comprises putting the above mixture of hydrocarbons in contact, under cracking conditions, with a large-pore zeolite having a molar ratio Silica/Alumina lower than 200, preferably ranging from 50 to 150.

Process for the production of propylene from olefinic streams

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Sesto San Giovanni, Italy

Massimo Romagnoli