Process and apparatus for removing hydrogen sulfide

Abstract

One exemplary embodiment can be a process for removing hydrogen sulfide from a fractionated hydroprocessed effluent. The process can include stripping a hydroprocessed effluent from a hydroprocessing zone, fractionating the stripped hydroprocessed effluent to obtain a naphtha cut, and sending the naphtha cut to a hydrogen sulfide removal zone. The hydrogen sulfide removal zone can include an amine wash settler, an amine contacting column, or a steam stripper.

1 . A process for removing hydrogen sulfide from a fractionated hydroprocessed effluent, comprising:
 A) stripping a hydroprocessed effluent from a hydroprocessing zone;   B) fractionating the stripped hydroprocessed effluent to obtain a naphtha cut; and   C) sending the naphtha cut to a hydrogen sulfide removal zone, comprising:
 1) an amine wash settler; 
 2) an amine contacting column; or 
 3) a steam stripper. 
   
     
     
         2 . The process according to  claim 1 , wherein the naphtha cut comprises one or more C5-C10 hydrocarbons. 
     
     
         3 . The process according to  claim 1 , wherein the naphtha cut comprises one or more C5-C6 hydrocarbons. 
     
     
         4 . The process according to  claim 1 , wherein the hydrogen sulfide removal zone comprises the amine contacting column. 
     
     
         5 . The process according to  claim 4 , wherein the amine contacting column comprises a mesh, optionally coated. 
     
     
         6 . The process according to  claim 5 , wherein the amine contacting column further comprises a packing. 
     
     
         7 . The process according to  claim 1 , wherein the hydrogen sulfide removal zone comprises the steam stripper. 
     
     
         8 . The process according to  claim 1 , wherein the hydrogen sulfide removal zone comprises the amine wash settler. 
     
     
         9 . The process according to  claim 8 , wherein the amine wash settler is a first amine wash settler, and the hydrogen sulfide removal zone further comprises a second amine wash settler. 
     
     
         10 . The process according to  claim 8 , wherein the hydrogen sulfide removal zone further comprises a wash water settler. 
     
     
         11 . The process according to  claim 10 , wherein the wash water settler further comprises a coalescer. 
     
     
         12 . The process according to  claim 8 , wherein the hydrogen sulfide removal zone further comprises an alkali settler. 
     
     
         13 . An apparatus for removing hydrogen sulfide, comprising:
 A) a hydroprocessing zone for producing a hydroprocessed effluent;   B) a stripper for receiving at least a portion of the hydroprocessed effluent;   C) a fractionation column for receiving a hydrocarbon stream from the stripper; and   D) a hydrogen sulfide removal zone for receiving a naphtha cut wherein the hydrogen sulfide removal zone comprises:
 1) an amine wash settler; 
 2) an amine contacting column; or 
 3) a steam stripper. 
   
     
     
         14 . The apparatus according to  claim 13 , wherein the hydrogen sulfide removal zone comprises the amine wash settler. 
     
     
         15 . The apparatus according to  claim 14 , wherein the amine wash settler is a first amine wash settler, and the hydrogen sulfide removal zone further comprises a second amine wash settler. 
     
     
         16 . The apparatus according to  claim 14 , wherein the hydrogen sulfide removal zone further comprises a wash water settler. 
     
     
         17 . The apparatus according to  claim 14 , wherein the hydrogen sulfide removal zone further comprises an alkali settler. 
     
     
         18 . The apparatus according to  claim 13 , wherein the apparatus comprises the amine contacting column. 
     
     
         19 . The apparatus according to  claim 18 , wherein the amine contacting column comprises a mesh, optionally coated. 
     
     
         20 . A process for removing hydrogen sulfide from a fractionated hydroprocessed effluent, comprising:
 A) steam stripping an effluent from a hydroprocessing zone in a first section of a stripper;   B) fractionating the stripped hydroprocessed effluent to obtain a naphtha cut; and   C) sending the naphtha cut to a second section of the stripper for steam stripping.