Petroleo Brasileiro S.a. - Petrobras

Petróleo Brasileiro S.a. - Petrobas

Jose Antonio Vidal Vieira

Wilson Kenzo Huziwara

Donizeti Aurelio Silva Belato

Jorge Roberto Duncan Lima

Ademaro Marchiori

Wladmir Ferraz De Souza

Vitor Loureiro Ximenes

Marcio De Figueiredo Portilho

Sonia Maria Cabral De Menezes

Mauro Iurk Rocha

Shelton Rolim Cercal

William Victor Carlos Candido

Angelo Jose Gugelmin

Michele Sabba Da Silva Lima

Adriana Moret Borges

Bruna Santiago Dias

Jorilvaldo Medeiros

Roberto Ruva

Carla De Araujo Ferreira

Marcelle Vensão Camargo Foschiani

Roberto Ricardo Rangel

Alinson Francisco Geros

Fabricio Torres

Carlos Otavio Brito

Roberto Lopes Carvalho

Carolina Ludwig Quintani

Marcelo Vieira Alves

Michele Sabba

Sonia Maria Cabal De Menezes

The present invention describes a process for purifying biodiesel without using a filter aid, in which purification of the biodiesel takes place by a sequence of washing operations after the reaction section, with stirring that is sufficiently vigorous to assist in the transformation of the molecules of esterified steryl glycosides, in order to convert them to a chemical form that can be removed by the process.

Process for purifying biodiesel

The present invention relates to a process of obtainment of aviation biokerosene and a composition of aviation kerosene containing the aviation biokerosene thus produced. The process consists of simultaneously combining three basic conditions: raw material selection, processing conditions, and control of specific properties of the product. The composition is classified as a semisynthetic composition of aviation kerosene and may contain up to 20% by weight of aviation biokerosene, satisfying the limits determined in the international specifications for aviation kerosene.

Process for the production of aviation biokerosene and aviation kerosene composition

A process for producing biodiesel from natural oils and/or fats, a low molecular weight C-Calcohol and catalyst is described. The process preferably uses vegetable oils and is specifically configured for producing biodiesel from castor oil.

Process for producing biodiesel

A multiphase multifunctional reactor, system and method is described which has the capacity to effect extractive oxidation of sulfur and nitrogen compounds and unstable unsaturated compounds that are present in raw hydrocarbon streams, in such a way that the reaction conditions are adjusted and avoid losses of yield of the treated hydrocarbon in the stages of the extraction and/or absorption. The objective is achieved by means of the conception of a reactor which comprises a column divided into five sections which can be classified as two reaction sections () two decantation sections () and an inert gas section () under pressure.

Multiphase multifunctional reactor

The present invention relates to a device and respective process for distribution of mixed charges comprising a flat tray in the form of a disc drained by a series of drainage tubes located above the surface of fixed beds of catalysts, capable of promoting the homogenisation and distribution of charges by means of said device. Such drainage tubes mounted in said manner have the objective of restricting and reorienting the flow of mixed charges, multiplying the points whereon they fall, principally of the liquid phase, onto said beds of catalysts. For the purpose of doing so said drainage ducts, being segments of tubes, distributed on the entire surface of said tray possess caps affixed at the upper extremity thereof impeding the direct flow of charge onto the bed of catalyst, creating a reservoir of liquid on the tray, subsequently being drained down such device in a more controlled manner.

Device and process for distribution of mixed charges onto fixed beds of catalyst in descending-flow reactors

A distributor nozzle for a two-phase charge, to be used in fixed-bed reactors in order to increase the area over which the mixture is dispersed and to make its flow rate the same over the whole area of the bed in the reactor. The device includes a number of fixing bars and a deflector cone frustum. The deflector cones or cone frusta may have more than one angle in order to improve the distribution, and they have a number of apertures or slits and a number of vertical directing elements or a directing cage or frame to direct the stream of the two-phase charge in order to increase the area over which the mixture is dispersed and to make its flow rate the same over the entire area of the bed in the reactor.

Distributor nozzle for a two-phase charge in fixed-bed reactors

Growing community of inventors

Rio de Janeiro, Brazil

Jose Antonio Vidal Vieira