Catalyst for producing monocyclic aromatic hydrocarbons, and method for producing monocyclic aromatic hydrocarbons

Abstract

A catalyst for producing monocyclic aromatic hydrocarbons of 6 to 8 carbon number from a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and an end point temperature of not more than 400° C., or a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and a 90 volume % distillation temperature of not more than 360° C., wherein the catalyst contains a crystalline aluminosilicate, gallium and/or zinc, and phosphorus, and the amount of phosphorus supported on the crystalline aluminosilicate is within a range from 0.1 to 1.9% by mass based on the mass of the crystalline aluminosilicate; and a method for producing monocyclic aromatic hydrocarbons, the method involving bringing a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and an end point temperature of not more than 400° C., or a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and a 90 volume % distillation temperature of not more than 360° C., into contact with the above-mentioned catalyst for producing monocyclic aromatic hydrocarbons.

1 . A catalyst for producing monocyclic aromatic hydrocarbons, used for producing monocyclic aromatic hydrocarbons of 6 to 8 carbon number from a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and an end point temperature of not more than 400° C., or a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and a 90 volume % distillation temperature of not more than 360° C., wherein
 the catalyst comprises a crystalline aluminosilicate, gallium and/or zinc, and phosphorus, and the amount of phosphorus supported on the crystalline aluminosilicate is within a range from 0.1 to 1.9% by mass based on the mass of the crystalline aluminosilicate. 
 
     
     
         2 . A catalyst for producing monocyclic aromatic hydrocarbons, used for producing monocyclic aromatic hydrocarbons of 6 to 8 carbon number from a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and an end point temperature of not more than 400° C., or a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and a 90 volume % distillation temperature of not more than 360° C., wherein
 the catalyst comprises a crystalline aluminosilicate, gallium and/or zinc, and phosphorus, and the amount of phosphorus is within a range from 0.1 to 5.0% by mass based on the mass of the catalyst. 
 
     
     
         3 . The catalyst for producing monocyclic aromatic hydrocarbons according to  claim 1  or  2 , wherein the crystalline aluminosilicate is a pentasil-type zeolite. 
     
     
         4 . The catalyst for producing monocyclic aromatic hydrocarbons according to  claim 1  or  2 , wherein the crystalline aluminosilicate is an MFI-type zeolite. 
     
     
         5 . A method for producing monocyclic aromatic hydrocarbons of 6 to 8 carbon number, the method comprising bringing a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and an end point temperature of not more than 400° C., or a feedstock oil having a 10 volume % distillation temperature of at least 140° C. and a 90 volume % distillation temperature of not more than 360° C., into contact with the catalyst for producing monocyclic aromatic hydrocarbons according to  claim 1  or  2 . 
     
     
         6 . The method for producing monocyclic aromatic hydrocarbons of 6 to 8 carbon number according to  claim 5 , wherein a cracked gas oil produced in a fluid catalytic cracking is used as the feedstock oil. 
     
     
         7 . The method for producing monocyclic aromatic hydrocarbons of 6 to 8 carbon number according to  claim 5 , wherein the feedstock oil is brought into contact with the catalyst for producing monocyclic aromatic hydrocarbons in a fluidized bed reactor.