Method for Producing Olefins from Synthesis Gas in a Reaction Column

Abstract

Process for the synthesis of olefins from synthesis gas in the presence of at least one Fischer-Tropsch catalyst in a reaction column, wherein the synthesis gas is introduced into the reaction column below a zone A of the reaction column and the olefins formed are taken off below the inlet for the synthesis gas.

1 - 14 . (canceled) 
   
   
       15 . A process for the synthesis of olefins from synthesis gas in the presence of at least one Fischer-Tropsch catalyst in a reaction column, wherein the synthesis gas is introduced into the reaction column below a zone A of the reaction column and the olefins formed are taken off below the inlet for the synthesis gas, wherein the zone A comprises at least one combined reaction and distillation zone (combination zone). 
   
   
       16 . The process according to  claim 15 , wherein the Fischer-Tropsch catalyst is localized in the reaction zone. 
   
   
       17 . The process according to  claim 15 , wherein the Fischer-Tropsch catalyst is localized in the combination zone. 
   
   
       18 . The process according to  claim 15 , wherein the zone A comprises at least one combination zone and at least one physically separate distillation zone. 
   
   
       19 . The process according to  claim 15 , wherein the zone A comprises at least one physically separate reaction zone and distillation zone. 
   
   
       20 . The process according to  claim 15 , wherein the olefins are α-olefins. 
   
   
       21 . The process according to  claim 15 , wherein the olefins formed are taken off via the bottom zone of the reaction column. 
   
   
       22 . The process according to  claim 15 , wherein synthesis gas is introduced at one or more points within the zone A in addition to the introduction of synthesis gas below the zone A. 
   
   
       23 . The process according to  claim 15 , wherein the catalyst forms a fixed bed, a fluidized bed, a suspension or a bubble column in a reaction or combination zone. 
   
   
       24 . The process according to  claim 15 , wherein the Fischer-Tropsch catalyst comprises at least one metal of group VIIIB. 
   
   
       25 . The process according to  claim 15 , wherein an α-olefin or a mixture of α-olefins whose number of carbon atoms is at least 1 less than that of the olefin mainly formed which is separated off below the zone A is introduced into the zone A during start-up of the reaction. 
   
   
       26 . A mixture of olefins obtainable by the processes according to  claim 15 .