Petroleo Brasileiro S.a. - Petrobras

Nelson Patricio Junior

Emanuel Freire Sandes

Paulo Sergio Freire

Wilson Kenzo Huziwara

Aurélio Medina Dubois

José Geraldo Furtado Ramos

Andrea De Rezende Pinho

José Mozart Fusco

Mauro Silva

Paulo Sérgio Freire

Jorivaldo Medeiros

Luiz Carlos Casavechia

Shelton Rolim Cercal

Claudio Fonseca Machado Dos Santos

Sergio Roberto Barreiros Neves

Geovani Aliatti

Andréa De Rezende Pinho

Cláudio Fonseca Machado Dos Santos

Walcondiney Pereira Nunes

Jose Geraldo Furtado Ramos

Paulo Sérgio Moreira Assumpção

Raphael Coelho Schiavo

Naiara Dos Santos Lages

Ricardo Serfaty

Diana Albani Siqueira

Emmanuel Freire Sandes

A telescopic joint for connecting two pipes in a separating vessel of a fluid catalytic cracking unit includes a first pipe and a second pipe; wherein the two pipes are connected together at their ends by a sliding ring comprising a first portion extending substantially parallel to the first and second pipes, and a second portion extending substantially perpendicular to the first and second pipes, to thereby form an L profile; the first pipe comprises a fitting seat fixed at its end, and a flanged ring, the flanged ring and the fitting seat being configured to surround at least partially the second portion of the sliding ring; and the telescopic joint comprises a first plurality of gaskets positioned in a first space between the second portion of the sliding ring and the fitting seat and distributed in a direction parallel to the second portion of the sliding ring.

Telescopic joint

A combustion device for meeting the energy demand of processes for producing light olefins (ethylene and propene) in fluidized-bed catalytic cracking units. The combustion device is used to burn heating oil and to keep burning the coke deposited on the catalyst, with a view to heating it to meet the energy demand of the reaction, combustion taking place smoothly and uniformly, preventing the formation of hotspots within the catalytic bed and in the dilute phase following combustion (afterburning), thereby minimizing deactivation of the catalyst and the risk of damage to the equipment inside of the combustion device.

High-performance combustion device and fluid catalytic cracking process for the production of light olefins

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 fluid flow inversion chamber comprises a spray nozzle () which has a coaxial configuration of feed flow () and steam flow () streams capable of providing increased contact of the two streams within the reaction zone, and, as a consequence of the inversion of the coaxial configuration of feed flow () and steam flow () streams, avoids the formation of coke, which facilitates inspection and replacement of nozzles worn by erosion.

Fluid flow inversion chamber for feed spray nozzles in FCC unit risers

An apparatus for downflow fluid catalytic cracking is described, which comprises a regenerated catalyst riser carrying regenerated catalyst and a carrying fluid, those being directed through a crossover section to a distributor that will centrifuge gas and separate catalyst from carrying fluid, the catalyst being directed to a downflow reactor through a distributing basket provided with perforations. The upper part of the reactor is provided with feed injectors, which atomize the feed so that feed vaporization and feed and catalyst admixture is optimized. After the cracking reaction in downflow reactor, reaction products are separated and spent catalyst is directed to stripping and regeneration sections. The FCC process carried out in the apparatus is also described.

Apparatus and process for downflow fluid catalytic cracking

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Rio de Janeiro, Brazil

Nelson Patricio Junior