Petroleo Brasileiro S.a. - Petrobras

Luis Fernando Soares De Azevedo

Andrea De Rezende Pinho

Jefferson Roberto Gomes

Mauro Silva

Julio Amilcar Ramos Cabral

Fabio Leal Mendes

Keiji Maeshiro

Júlio Amílcar Ramos Cabral

Antonio Wahib Bogossian Khalil

Daniel Santos De Albuquerque

Julio Amílcar Ramos Cabral

The present invention relates to a method for the production of ethene, CO, and hydrogen in a reactor with a circulating fluidized bed with two independent sections, from feedstocks that contain hydrocarbons with at least 11 carbon atoms or from feedstocks with a high oxygen content, using a catalyst in particulate form. The method teaches that in one of the sections of the reactor, in the absence of oxygen, a catalyst containing a dehydrogenation metal promotes the cracking of the said feedstocks, facilitating the subsequent endothermic reactions. In the other section, the coke is burned with air and the heating of the catalyst is controlled, for the adjustment of the appropriate amount of energy that the heated catalyst will convey to the section in which the endothermic reactions take place. The total ethene yield of the process according to the present invention is approximately 20% by weight in relation to the feedstock.

Method for the production of ethene and synthesis gas in circulating fluidized bed

The process combines hydroconversion and catalytic cracking starting from a feed containing triglycerides, at concentrations of fatty acids above 85%, which maximizes the yields of light olefins, chiefly ethylene and propylene, while reducing the yield of gasoline, with conversion greater than 80 wt. %.

Process for producing light olefins from a feed containing triglycerides

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Rio de Janeiro, Brazil

Luis Fernando Soares De Azevedo