Method for the denitrization of hydrocarbon charges in the presence of a polymeric mass

Abstract

A process for denitrogenation of hydrocarbonated compounds containing basic and/or neutral nitrogenous hydrocarbonated compounds characterized by the fact that the hydrocarbonated compounds are placed in contact with a polymeric material including at least one polymer P obtained from at least one non-styrenic monomer A with at least one polar function generating hydrogen bonds with the nitrogenous hydrocarbonated compounds.

1 . A process for denitrogenation of hydrocarbonated compounds comprising basic and/or neutral nitrogenous hydrocarbonated compounds, comprising placing the hydrocarbonated compounds in contact with a polymeric material comprising at least one polymer P obtained from at least one non-styrenic monomer A with at least one polar function generating hydrogen bonds with the nitrogenous hydrocarbonated compounds.  
   
   
       2 . The process according to  claim 1 , wherein polymer P is a homopolymer of A or a copolymer of A with at least one monomer B different from monomer A.  
   
   
       3 . The process according to  claim 1 , wherein the polymeric material is formed by polymer P alone or supported by a solid, with this solid, in divided or aggregate form, being coated by polymer P.  
   
   
       4 . The process according to  claim 1 , wherein monomer A is selected from the group consisting of acrylates, methacrylates, phenols, acrylamides, substituted ethylene oxides, urethanes, isocyanates and acrylamides substituted or not by at least one polar function.  
   
   
       5 . The process according to  claim 1 , wherein the at least one polar function of polymer A is selected from the group consisting of alcohol, ester and ether of type RO, with R being selected from the group consisting of an alkyl group containing 1 to 18 atoms of carbon, amine, starch, imide, nitrile, thiol, thioester, urea, carbamate, thiocarbamate and epoxide.  
   
   
       6 . The process according to  claim 1 , wherein polymer P comprises 20 wt % to 100 wt % of monomer A.  
   
   
       7 . The process according to  claim 1 , wherein polymer P is selected from the group consisting of poly(acrylates), poly(methacrylates), poly(acrylamides), poly(methacrylamides), poly(ethylene glycols), poly(methanes), formo-phenolic resins and copolymers of these products.  
   
   
       8 . The process according to  claim 1 , wherein monomer A is selected from the group consisting of acrylates and methacrylates with ether and/or epoxide functions and phenols.  
   
   
       9 . The process according to  claim 1 , wherein polymer P is selected from the group consisting of polyglycidylmethacrylates and polyphenols.  
   
   
       10 . The process according to  claim 1 , wherein the denitrogenation reaction is carried out at a temperature between 0 and 300° C., and under pressure between 10 5  and 50×10 5  Pa.  
   
   
       11 . The process according to  claim 1 , wherein the weight ratio of the hydrocarbonated compound to polymer P is at least 1.  
   
   
       12 . The process according to  claim 1 , further comprising at least a first step of absorbing the nitrogenous compounds on the polymeric material, and at least a second step of regenerating the polymeric material by washing it with a polar or aromatic solvent in which the nitrogenous compounds are soluble.  
   
   
       13 . The process according to  claim 12 , wherein, in the second step, the solvent is selected from the group consisting of toluene, xylene, ethanol and aromatic petroleum cuts.  
   
   
       14 . A polymeric material comprising at least one polymer P obtained from at least one non-styrenic monomer A, wherein the polymeric material is able to absorb at most 6 wt % of aromatic hydrocarbons in the process of  claim 1 .  
   
   
       15 . The polymeric material according to  claim 14 , comprising one polymer P obtained from at least one monomer A alone or in combination with at least one monomer B, with polymer P being alone or supported by a solid, with this solid, in divided or aggregated form, being coated by polymer P, with this polymer P not absorbing over 6 wt % of aromatic hydrocarbons.  
   
   
       16 . The polymeric material according to  claim 14 , wherein monomer A is selected from the group consisting of acrylates, methacrylates, phenols, acrylamides, substituted ethylene oxides, and isocyanates, which may or may not be substituted by at least one polar function selected from the group consisting of alcohol, ether, ester, amine, starch, imide, nitrile, thiol, thioester, urea, carbamate and thiocarbamate and epoxide.  
   
   
       17 . The polymeric material according to  claim 16 , wherein monomer A is selected from the group consisting of acrylates and methacrylates with ether and/or epoxide functions and phenols.  
   
   
       18 . The polymeric material according to  claim 14  wherein polymer P is selected from the group consisting of poly(acrylates), poly(methacrylates), poly(acrylamides), poly(methacrylamides), poly(ethylene glycols), poly(methanes), formo-phenolic resins and copolymers of these products.  
   
   
       19 . The polymeric material according to  claim 14 , wherein polymer P is selected from the group consisting of polyglycidylmethacrylate and polyphenols.  
   
   
       20 . A hydrocarbon processing process, comprising employing the process of  claim 1  upstream from a part of the hydrocarbon processing process for which the nitrogenous compounds present are poisons or reaction inhibitors.  
   
   
       21 . The hydrocarbon processing process of  claim 20 , wherein the process of  claim 1  is upstream from at least one of processes selected from the group consisting of reforming, isomerization, catalytic cracking and the desulfurization.  
   
   
       22 . The process according to  claim 2 , wherein monomer B is a styrenic monomer.  
   
   
       23 . The process according to  claim 3 , wherein the solid is selected from the group consisting of another polymer, refractory oxide mineral supports, and activated carbon.  
   
   
       24 . The process according to  claim 6 , wherein polymer P comprises 25 wt % to 95 wt % of monomer A.  
   
   
       25 . The process according to  claim 6 , wherein polymer P comprises 30 wt % to 90 wt % of monomer A.  
   
   
       26 . The process according to  claim 10 , wherein the denitrogenation reaction is carried out at a temperature between 0 and 100° C.  
   
   
       27 . The process according to  claim 10 , wherein the denitrogenation reaction is carried out at atmospheric pressure.  
   
   
       28 . The process according to  claim 11 , wherein the weight ratio of the hydrocarbonated compound to polymer P is greater than 3.  
   
   
       29 . The process according to  claim 13 , wherein, in the second step, the solvent comprises aromatic petroleum cuts with a high concentration of C 9  to C 12  aromatics.  
   
   
       30 . The polymeric material of  claim 14 , wherein the polymeric material is able to absorb at most 1 wt % of aromatic hydrocarbons in the process of  claim 1 .  
   
   
       31 . The polymeric material according to  claim 15 , wherein the solid is selected from the group consisting of another polymer, refractory oxide mineral supports and activated carbon.  
   
   
       32 . The polymeric material according to  claim 15 , wherein polymer P does not absorb over 1 wt % of aromatic hydrocarbons.