Aromatic and naphthenic solvents based on ethanol

Abstract

The invention relates to a preparation method for hydrocarbon cuts, said method comprising:a) providing a hydrocarbon feedstock originating from ethanol having an initial boiling point and a final boiling point in the range from 20 to 250° C. and comprising:from 20 to 60% by weight of aromatic compounds;from 20 to 60% by weight of non-cyclic paraffins; andfrom 2 to 20% by weight of naphthenes,with respect to the total weight of the hydrocarbon feedstock,b) optionally, a step of hydrogenation of the hydrocarbon feedstock originating from ethanol provided during step a) in order to obtain a hydrogenated hydrocarbon feedstock;c) a distillation step (i) of the hydrocarbon feedstock originating from ethanol during step a) or (ii) of the hydrogenated hydrocarbon feedstock according to step b), in order to obtain at least one hydrocarbon cut having a difference of less than 100° C. between the final boiling point thereof and the initial boiling point thereof.

1 .- 14 . (canceled) 
     
     
         15 . A method for the preparation of hydrocarbon cuts, said method comprising:
 a) providing a hydrocarbon feedstock originating from ethanol comprising:
 from 20 to 60% by weight of aromatic compounds; 
 from 20 to 60% by weight of non-cyclic paraffins; and 
 from 2 to 20% by weight of naphthenes, 
   with respect to the total weight of the hydrocarbon feedstock,   b) optionally, a step of hydrogenation of the hydrocarbon feedstock originating from ethanol provided at step a) in order to obtain a hydrogenated hydrocarbon feedstock;   c) a distillation step (i) of the hydrocarbon feedstock originating from ethanol of step a) or (ii) of the hydrogenated hydrocarbon feedstock of step b), in order to obtain at least one hydrocarbon cut having a difference of less than 100° C. between the final boiling point thereof and the initial boiling point thereof,   the hydrocarbon feedstock of step a) having an initial boiling point and a final boiling point in the range going from 20 to 250° C.   
     
     
         16 . The method according to  claim 15 , wherein step a) comprises a preparation step for preparing the hydrocarbon feedstock. 
     
     
         17 . The method according to  claim 15 , wherein the hydrocarbon feedstock of step a) has one or a plurality of the following features:
 a content of aromatic compounds ranging from 30 to 60% by weight with respect to the total weight of the hydrocarbon feedstock, and/or   a content of non-paraffins ranging from 20 to 60% by weight with respect to the total weight of the hydrocarbon feedstock, and/or   a naphthene content ranging from 2 to 20% by weight with respect to the total weight of the hydrocarbon feedstock, and/or   an initial boiling point in the range going from 20 to 250° C., and/or   a final boiling point in the range going from 150 to 400° C., and/or   a boiling range having an extent greater than or equal to 100° C.   
     
     
         18 . The method according to  claim 15 , wherein the hydrocarbon feedstock of step a) has an initial boiling point and a final boiling point in the range going from 30 to 230° C. and has a difference greater than or equal to 150° C. between the final boiling point thereof and the initial boiling point thereof. 
     
     
         19 . The method according to  claim 15 , wherein the hydrocarbon feedstock of step a) has a biocarbon content greater than or equal to 90% by weight with respect to the total carbon weight of the hydrocarbon feedstock. 
     
     
         20 . The method according to  claim 15 , wherein the hydrogenation step b) is present and wherein it is carried out at a temperature ranging from 60 to 180° C. and a pressure ranging from 20 to 160 bar. 
     
     
         21 . The method according to  claim 20 , comprising a recycling of part of the hydrogenated hydrocarbon feedstock obtained at the end of the hydrogenation step b) in order to be mixed with the hydrocarbon feedstock provided in step a). 
     
     
         22 . The method according to  claim 20 , wherein the hydrogenated hydrocarbon feedstock obtained at the end of the hydrogenation step comprises less than 500 ppm by weight of aromatics relative to the total weight of the hydrogenated hydrocarbon feedstock. 
     
     
         23 . The method according to  claim 20 , wherein at least two hydrocarbon cuts are prepared. 
     
     
         24 . The method according to  claim 15 , wherein the distillation step is carried out directly on the hydrocarbon feedstock, without hydrogenation, and wherein at least two hydrocarbon cuts are prepared. 
     
     
         25 . A hydrocarbon cut having a difference of less than 100° C. between the final boiling point and the initial boiling point, said hydrocarbon cut comprising:
 a) a biocarbon content greater than or equal to 90% by weight with respect to the total weight of carbon atoms, 
 b) a naphthenes and aromatics content selected from:
 b1) a naphthene content ranging from 2 to 20% by weight and a content of aromatics ranging from 30 to 60% by weight, with respect to the total weight of the hydrocarbon cut or 
 b2) a naphthene content of 40 to 80% by weight and a content of aromatics of 500 ppm by weight or less, with respect to the total weight of the hydrocarbon cut, 
 
 c) a content of non-cyclic paraffins ranging from 20 to 60% by weight. 
 
     
     
         26 . The hydrocarbon cut according to  claim 25 , chosen from the following cuts:
 (i) a CA1 cut having an initial boiling point and a final boiling point in the range going from 150 to 190° C. said CA1 cut having an aromatic content ranging from 30 to 60% by weight relative to the total weight of the CA1 cut;   (ii) a CA2 cut having an initial boiling point and a final boiling point in the range going from 185 to 250° C., said CA2 cut having an aromatic content going from 30 to 60% by weight, relative to the total weight of the CA2 cut;   (iii) a CN1 cut having an initial boiling point and a final boiling point in the range going from 30 to 100° C., said CN1 cut having an aromatic content of less than or equal to 500 ppm relative to the total weight of the CN1 cut;   (iv) a CN2 cut having an initial boiling point and a final boiling point in the range going from 90 to 165° C. said CN2 cut having an aromatic content of less than or equal to 500 ppm relative to the total weight of the CN2 cut;   (v) a CN3 cut having an initial boiling point and a final boiling point in the range going from 160 to 250° C. said CN3 cut having an aromatic content of less than or equal to 500 ppm.   
     
     
         27 . A hydrocarbon cut according to  claim 25 , which can be obtained by a method for the preparation of hydrocarbon cuts, said method comprising:
 a) providing a hydrocarbon feedstock originating from ethanol comprising:
 from 20 to 60% by weight of aromatic compounds; 
 from 20 to 60% by weight of non-cyclic paraffins; and 
 from 2 to 20% by weight of naphthenes, 
   with respect to the total weight of the hydrocarbon feedstock,   b) optionally, a step of hydrogenation of the hydrocarbon feedstock originating from ethanol provided at step a) in order to obtain a hydrogenated hydrocarbon feedstock;   c) a distillation step (i) of the hydrocarbon feedstock originating from ethanol of step a) or (ii) of the hydrogenated hydrocarbon feedstock of step b), in order to obtain at least one hydrocarbon cut having a difference of less than 100° C. between the final boiling point thereof and the initial boiling point thereof,   the hydrocarbon feedstock of step a) having an initial boiling point and a final boiling point in the range going from 20 to 250° C.   
     
     
         28 . A method comprising a step of using a hydrocarbon cut according to  claim 25 , as a solvent or as a thermal fluid or as an additive in the fuel formulation. 
     
     
         29 . The method according to  claim 16 , wherein the preparation step comprises a conversion step for converting bioethanol into ethylene and an oligomerization step for oligomerizing ethylene. 
     
     
         30 . The method according to  claim 21 , wherein the mixture is carried out a with ratio hydrocarbon feedstock weight provided at step a)/hydrogenated hydrocarbon feedstock obtained at the end of step b), ranging from 50/50 to 90/10. 
     
     
         31 . The method according to  claim 15 , wherein at least two hydrocarbon cuts are prepared, said hydrocarbon cuts are:
 (i) a CA1 cut having an initial boiling point and a final boiling point in the range going from 150 to 190° C.;   (ii) a CA2 cut having an initial boiling point and a final boiling point in the range going from 185 to 250° C.   
     
     
         32 . The method according to  claim 15 , wherein the distillation step is carried out directly on the hydrocarbon feedstock, without hydrogenation, and wherein at least three hydrocarbon cuts are prepared. 
     
     
         33 . The method according to  claim 15 , wherein the distillation step is carried out directly on the hydrocarbon feedstock, without hydrogenation, and wherein at least three hydrocarbon cuts are prepared, said cuts are:
 (i) a CN1 cut having an initial boiling point and a final boiling point in the range going from 30 to 100° C., said CN1 cut having a boiling range extent preferably going from 10 to 50° C.;   (ii) a CN2 cut having an initial boiling point and a final boiling point in the range going from 90 to 165° C., said CN2 cut having a boiling range extent preferably going from 30 to 70° C.   (ii) a CN3 cut having an initial boiling point and a final boiling point in the range going from 160 to 250° C.   
     
     
         34 . The hydrocarbon cut according to  claim 25 , wherein:
 (i) CA1 cut has a boiling range extent going from 10 to 30° C.;   (ii) CA2 cut has a boiling range extent going from 20 to 70° C.;   (iii) CN1 cut has a boiling range extent going from 10 to 50° C.;   (iv) CN2 cut has a boiling range extent preferably from 30 to 70° C.;   (v) CN3 cut has a boiling range extent from 30 to 70° C.