Process for catalytic cracking of a biomass

Abstract

A process for converting a biomass comprising contacting the biomass with a catalytic cracking catalyst at a temperature of more than 400° C. in a catalytic cracking reactor to produce a product stream containing one or more cracked products and supplying a biomass to the reactor via a feed nozzle having a feed nozzle outlet located between a first section and a second section of the reactor and downstream of an opening of a catalyst supply pipe connected to the first section, wherein the second section comprises a fluid connection to and located downstream of the first section, the second section having an inner diameter which decreases in a downstream direction.

1 . A process for converting a biomass comprising
 contacting a biomass with a catalytic cracking catalyst at a temperature of more than 400° C. in a catalytic cracking reactor to produce a product stream containing one or more cracked products, and   supplying a biomass to the reactor via a feed nozzle having a feed nozzle outlet located between a first section and a second section of the reactor and downstream of an opening of a catalyst supply pipe connected to the first section, wherein the second section comprises a fluid connection to and located downstream of the first section, the second section having an inner diameter which decreases in a downstream direction.   
     
     
         2 . The process of  claim 1 , wherein the biomass comprises a pyrolysis oil derived from a biomass material. 
     
     
         3 . The process of  claim 2 , wherein the pyrolysis oil is a pyrolysis oil derived from a cellulosic or lignocellulosic material. 
     
     
         4 . The process of  claim 2 , wherein the pyrolysis oil is an at least partially deoxygenated pyrolysis oil. 
     
     
         5 . The process of  claim 1 , wherein the first section comprises an essentially constant inner diameter. 
     
     
         6 . The process of  claim 1 , wherein the reactor comprises a third section having a fluid connection to and located downstream of the second section, said third section comprises an essentially constant inner diameter that is smaller than the smallest inner diameter of the first section. 
     
     
         7 . The process of  claim 1 , the reactor comprises a third section having a fluid connection to and located downstream of the second section, said third section comprises an inner diameter which increases in a downstream direction, and wherein the most upstream inner diameter of the third section is smaller than the smallest inner diameter of the first section. 
     
     
         8 . The process of  claim 1 , wherein the reactor further comprises a catalyst supply pipe connected to a fluid passage in a side wall of the first section. 
     
     
         9 . The process of  claim 1 , wherein the catalytic cracking reactor is a fluid catalytic cracking reactor and the catalytic cracking catalyst is a fluid catalytic cracking catalyst. 
     
     
         10 . The process of  claim 1 , wherein the catalytic cracking reactor is a riser reactor. 
     
     
         11 . The process of  claim 1  further comprising supplying an additional hydrocarbon co-feed to the first section. 
     
     
         12 . The process of  claim 1  further comprising supplying a fluidizing medium to the first section to fluidize the catalytic cracking catalyst and/or the biomass, wherein the fluidizing medium flows from the first section in a downstream direction to the third section. 
     
     
         13 . The process of  claim 12 , wherein the fluidizing medium comprises at least one of steam, nitrogen, liquefied petroleum gas, gasoline, diesel, kerosene or naphtha. 
     
     
         14 . A catalytic cracking reactor comprising
 a first section;   a second section having a fluid connection to and located downstream of the first section, the second section having an inner diameter which decreases in a downstream direction;   a third section having a fluid connection to and located downstream of the second section;   a catalyst supply pipe being connected to the first section for supplying a fluid catalytic cracking catalyst to said first section between a first level and a second level, said second level being located downstream of the first level; and   a feed nozzle having a feed nozzle outlet for supplying a feed to the reactor, the feed nozzle outlet being located between the second level and the fluid connection between the first section and the second section.   
     
     
         15 . The reactor of  14 , further comprising
 a fluidizing medium supply and/or an additional hydrocarbon-cofeed supply having an outlet in the first section.   
     
     
         16 . The reactor of  claim 14 , wherein the first section comprises an essentially constant inner diameter. 
     
     
         17 . The reactor of  claim 14 , wherein the third section comprises an essentially constant inner diameter that is smaller than the smallest inner diameter of the first section. 
     
     
         18 . The reactor of  claim 14 , wherein the third section comprises an inner diameter which increases in a downstream direction, and wherein the most upstream inner diameter of the third section is smaller than the smallest inner diameter of the first section.