The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 2010
Filed:
Jul. 02, 2008
Claudia Maria DE L. Alvarenga Baptista, Rio de Janeiro, BR;
Elizabeth M. Moreira, Rio de Janeiro, BR;
Henrique Soares Cerqueira, Rio de Janeiro, BR;
Claudia Maria de L. Alvarenga Baptista, Rio de Janeiro, BR;
Elizabeth M. Moreira, Rio de Janeiro, BR;
Henrique Soares Cerqueira, Rio de Janeiro, BR;
Petroleo Brasileiro S.A. - Petrobras, Rio de Janeiro, BR;
Abstract
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—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—secondary riser ().