Petroleo Brasileiro S.a. - Petrobras

Petroleo Brasileiro S.a.

Luiz Carlos Casavechia

Wilson Kenzo Huziwara

Andrea De Rezende Pinho

Aurélio Medina Dubois

Carlos Nagib Khalil

José Mozart Fusco

Emanuel Freire Sandes

José Geraldo Furtado Ramos

Nelson Patricio Junior

Mauro Silva

Paulo Sérgio Freire

Paulo Sergio Freire

Waldir Pedro Martignoni

Julio Amilcar Ramos Cabral

Lúcia Cristina Ferreira Leite

Shelton Rolim Cercal

Amilcar Pereira Da Silva Neto

Eduardo C De Melo Guerra

Raul De Carvalho Silva

Júlio Amílcar Ramos Cabral

Lucia Cristina Ferreira Leite

Amílcar Pereira Da Silva Neto

Pinho Andrea De Rezende Rezende

Aurélio Medina Dubios

Nelson Junoir Patricio

The present invention comprises a thermocatalytic cracking process for the production of diesel oil from a charge of vegetable origin made from seeds of oleaginous plants in refineries possessing at least two FCC reactors. At least one of such reactors processes heavy gas oil or residue under conventional conditions while at least one of such reactors processes the charge of vegetable origin made from seeds of oleaginous plants under conditions suitable, for production of diesel oil. Said process employs the same catalyst utilized in the fluid catalytic cracking process which, simultaneously, processes a conventional charge. The diesel, or biodiesel, oil produced by means of said process is of superior quality having a cetane number exceeding 40 given that the cracking reactions occur at low temperatures and the products obtained are less oxidized and consequently purer than products obtained by means of existing technology.

Catalytic cracking process for production of diesel from seeds of oleaginous plants

The present invention relates to a system for the separation of suspensions of spent catalysts and hydrocarbons formed in an FCC unit with multiple ascending flow reaction tubes, comprising interconnections between each of the ascending flow reaction tubes and the separator vessel, each interconnection also comprises two sections. The outside sections of the separator vessel are inclined and are connected to a single vertical section, which penetrates into the interior of the separator vessel, and which has at its lower end an open device for draining the spent catalyst from the suspensions separated in this sector. In the same vertical section, at the end of its internal part at the separator vessel, a series of two sets of cyclones are installed, the first set containing cyclones without sealing legs, and the second set containing conventional cyclones of the first stage. The present invention also relates to a process for the separation of suspensions of spent catalysts and hydrocarbons using the said separation system.

System and process for the separation of suspensions of spent catalysts and hydrocarbons formed in a fluid catalytic cracking unit with multiple ascending flow reaction tubes

A second stage cyclone dipleg termination device for cyclones that operate under conditions in which the pressure in the top of the cyclone dipleg is lower than the external pressure where fine particulate matter is collected and discharged. The second stage cyclone dipleg termination device operates in a separator vessel () or a vessel of the regenerator of a fluid catalytic cracking (FCC) converter to reverse the pressure conditions commonly found in this type of equipment. One end of a cyclone dipleg () is joined to a collector vessel (), in such a way that a portion of the dipleg () enters into the inside of the collector vessel (). The end of the dipleg () is connected to the conventional, normally used sealing device () in second stage cyclone () diplegs (). The collector vessel (), in turn, has on its bottom an outlet in the form of the dipleg (). On the inside of this outlet an injector device is introduced () through which a fluid under high pressure is discharged, associated with a 'venturi' type nozzle (), which moves or drags the particulate matter discharged by the dipleg () of the cyclone () through the sealing valves (), inside the collector vessel () the exterior of the collector vessel ().

Second stage cyclone dipleg termination device in FCC units

Growing community of inventors

São Mateus do Sul, Brazil

Luiz Carlos Casavechia