Process for obtaining a renewable hydrocarbon stream suitable as a component of gasoline formulations, renewable hydrocarbon stream, and gasoline formulation

Abstract

The invention relates to a process that comprises dehydration of by-products from ethanol production from sugar cane, by fluidized bed catalytic cracking, for obtaining a renewable hydrocarbon stream, preferably consisting primarily of olefins with 5 carbon atoms, for use in gasolines, and to the and to the hydrocarbon stream and gasoline formulations thus obtained.

1 . Process for obtaining a renewable hydrocarbon stream suitable as a component of gasoline formulations, characterized in that it comprises:
 a dehydration reaction of a feed of by-products from ethanol production from sugar cane, using fluid catalytic cracking (FCC) in the presence of an acid catalyst,   the dehydration reaction occurring at a temperature in the range 350-550° C. and a pressure in the range of from 0 kgf/cm 2  (0 KPa) to 2 kgf/cm 2  (196.13 KPa), and   wherein the catalyst/feed ratio by weight is between 3 and 10.   
     
     
         2 . Process according to  claim 1 , further comprising distillation of the liquid product obtained from the dehydration reaction at a temperature in the range of from 20 to 70° C., preferably from 20 to 50° C. 
     
     
         3 . Process according to  claim 2 , further comprising obtaining a hydrocarbon stream consisting primarily of olefins with 5 carbon atoms. 
     
     
         4 . Process according to  claim 3 , wherein the degree of conversion of the by-products from ethanol production from sugar cane into olefins with 5 carbons is in the range from 80 to 100%. 
     
     
         5 . Process according to  claim 2 , wherein the liquid product obtained from the dehydration reaction is cooled before continuing to the distillation. 
     
     
         6 . Process according to  claim 1 , wherein the by-product from ethanol production from sugar cane is fusel oil, and more preferably the isoamyl alcohol present therein. 
     
     
         7 . Process according to  claim 3 , characterized in that the stream consisting primarily of olefins comprises a percentage of isoamylenes between 60 and 80%. 
     
     
         8 . Process according to  claim 1 , wherein the temperature of the dehydration reaction is in the range 450-500° C. 
     
     
         9 . Process according to  claim 1 , wherein the pressure of the dehydration reaction is in the range from 1 kgf/cm 2  (98.07 KPa) to 1.8 kgf/cm 2  (176.52 KPa). 
     
     
         10 . Process according to  claim 1 , wherein the acid catalyst is alumina, silica-alumina, zeolite Y and/or mixtures of any or all thereof. 
     
     
         11 . Process according to  claim 1 , characterized in that the catalyst/feed ratio by weight is between 4 and 8. 
     
     
         12 . Process according to  claim 1 , characterized in that the degree of conversion of the by-product from ethanol production from sugar cane into olefins with 5 carbons is in the range from 90 to 100%. 
     
     
         13 . Renewable hydrocarbon stream, obtained by the process as defined in  claim 1 . 
     
     
         14 . Gasoline formulation, comprising the renewable hydrocarbon stream of  claim 13 .