US 6,162,754 AGranted

Process for regenerating a catalyst contained within a bubble-column reactor with draft-tube and process for the production of a hydrocarbon

AssigneesAgip Petroli S.p.A., ENI S.p.A., Institut Francais du Petrole

InventorsCristina Maretto, Vincenzo Piccolo, Dominique Casanave, Pierre Galtier

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Abstract

Continuous process for the production of prevalently heavy hydrocarbons starting from synthesis gas in the presence of a gas phase, a liquid and a solid catalyst, the above process being carried out using a bubble column, characterized in that the bubble column internally has: (a) at least one draft-tube; (b) at least one device for the inlet of the synthesis gas; (c) at least one device for the inlet of the regenerating gas; (d) at least one device for activating/interrupting the stream of regenerating gas; (e) optional devices suitable for minimizing the mixing of the synthesis gas with the regenerating gas.

Claims14

Dependent claims

A continuous process for the production of a hydrocarbon, comprising:

reacting a synthesis gas in the presence of a gas phase, a liquid and a solid catalyst using a bubble column equipped with cooling devices;
and
regenerating a reversibly, partially deactivated catalyst in the presence of a regenerating gas;
wherein the bubble column comprises:
(a) at least one draft tube, having a vertical cylinder and having smaller dimensions than the bubble column, with both a lower and an upper end open, completely immersed in the liquid phase containing the solid catalyst in suspension;
(b) at least one device for an inlet for the synthesis gas;
(c) at least one device for an inlet of the regenerating gas situated at a bottom of an interspace between the draft tube and an internal wall of the bubble column;
(d) at least one device which activates or interrupts the stream of the regenerating gas;
and
(e) an optional device for minimizing a mixing of the synthesis gas with the regenerating gas.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/147,736Filed 18 Mar 1999
Priority: IT MI97A150926 Jun 1997
Granted: 19 Dec 2000
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

C10G 2/342
Apparatus, reactors: with moving solid catalysts
B01J 8/226
The particles being subject to a circulatory movement: internally, i.e. the particles rotate within the vessel
B01J 38/48
Regeneration or reactivation of catalysts, in general: liquid treating or treating in liquid phase, e.g. dissolved or suspended
C07C 1/049
Set-up of reactors or accessories; Multi-step processes: coupling of the reaction and regeneration of the catalyst