Petroleo Brasileiro S.a. - Petrobras

Petroleo Brasileiro S.a.

Petroleo Brasiliero S.a - Petrobras

Elizabeth Marques Moreira

Henrique Soares Cerqueira

Andrea De Rezende Pinho

Jefferson Roberto Gomes

Mauri Jose Baldini Cardoso

Oscar René Chamberlain Pravia

Cláudia Maria De L Alvarenga Baptista

Raquel Campos Cauby Coutinho

Mauri José Baldini Cardoso

Patricia Suemar Mello Duarte Da Cunha

Gabriele Poly Alt Pereira Naves

Paulo César Peixoto Bugueta

Claudia Maria De Lacerda

A process is described for fluid catalytic cracking of hydrocarbons with high levels of basic nitrogen, where hydrocarbon feedstocks A and B with different levels of basic nitrogen are injected in a segregated fashion, into different risers of a multiple riser FCCU that possesses at least two risers. The injection of the feedstocks is made in such a way that feedstock A, to be injected in the riser with greater volume&#x2014;main riserpossessing a level of basic nitrogen at least 200 ppm lower than the level of feedstock B to be injected into the riser with lower volume&#x2014;secondary riser ().

Process for fluid catalytic cracking of hydrocarbon feedstocks with high levels of basic nitrogen

A process to reduce acidity of hydrocarbon mixtures () is described, that includes sending a hydrocarbon stream to a Microwave Treatment Unit (MTU), with a fixed stream or mud bed of microwave absorbent materials, pure or in mixtures, such as coke fines, spent catalysts that have already been used in FCC units or hydrotreatment (HDT) in a refinery, or even new catalysts which may be sulfided or not, under processing conditions.

Process for reducing the acidity of hydrocarbon mixtures

A process for reducing the naphthenic acidity of petroleum oils or their fractions is described, said process comprising providing a hydrocarbon feedhaving between 0.1 and 99 wt % of emulsified/dispersed water in oil, said feed containing salts and a content of naphthenic acids measured as TAN between 0.1 and 10 mg KOH/g oil; directing the said petroleum oil feed and emulsified/dispersed water towards an energy emitter device in the microwave range and submitting said feedin liquid phase, under pressure between 0.7 and 4.5 MPa at temperatures between 50&#xb0; C. and 350&#xb0; C. to the microwave radiation, applied in the range of 1 mm to 30 cm to said feed so that the presence of salts, the applied temperature and the high dielectric constant of the water droplets make that the heat is absorbed on the spot by the water and heat said water preferentially to the oil, while the naphthenic compounds at the interface between the droplets and the oil catch said heat; effecting the decomposition of the carboxylic acids responsible for the naphthenic acidity in the petroleum feed at temperatures around 320&#xb0; C. and generating CO; separating with the aid of any known deviceany gas phase generated, water and oil; and recovering the hydrocarbon oil streamhaving a reduced content in naphthenic acids. The process is designed to be applied to the reduction of naphthenic acids in feeds of petroleum oils and their fractions in the oil production step, in refineries or any industrial installation.

Process for reducing the naphthenic acidity of petroleum oils or their fractions

A process for reducing the naphthenic acidity of petroleum oils, or their liquid fractions, is described, the process comprising a thermal treatment of the petroleum oils, or their liquid fractions, in the presence of an adsorbent the surface of which is covered by high molecular weight carbon compounds. Preferred adsorbents are the spent or coked FCC catalysts.

Process for reducing the naphthenic acidity of petroleum oils

Growing community of inventors

Rio de Janeiro, Brazil

Elizabeth Marques Moreira