Petrochemical processes

Abstract

Petrochemical processes, including reforming processes are described herein. The reforming processes generally include introducing an input stream to a reforming unit having a reforming catalyst disposed therein, wherein the input stream includes a naphtha having an N+2A value of from about 65 to about 85 and contacting the input stream with the reforming catalyst and hydrogen to form an output stream.

1 . A reforming process comprising: 
 introducing an input stream to a reforming unit comprising a reforming catalyst disposed therein, wherein the input stream comprises a naphtha comprising a N+2A value of from about 65 to about 85; and    contacting the input stream with the reforming catalyst and hydrogen to form an output stream.    
   
   
       2 . The process of  claim 1 , wherein the napththa is supplied from naphtha cracking raffmate.  
   
   
       3 . The process of  claim 2 , wherein the naphtha cracking raffinate comprises a N+2A value of from about 75 to about 85.  
   
   
       4 . The process of  claim 1 , wherein the output stream comprises a naphtha having an output research octane number that is higher than an input research octane number of the input stream.  
   
   
       5 . The process of  claim 1 , wherein the reforming catalyst comprises a Group VIII noble metal.  
   
   
       6 . The process of  claim 5 , wherein the reforming catalyst comprises platinum.  
   
   
       7 . The process of  claim 1 , wherein the reforming catalyst comprises a promoter selected from gallium, tin, copper, chromium, rhenium, iridium and combinations thereof.  
   
   
       8 . The process of  claim 7 , wherein the reforming catalyst comprises from about 0.01 wt. % to about 5 wt. % promoter.  
   
   
       9 . The process of  claim 1  further comprising supplying hydrogen to the reforming unit.  
   
   
       10 . The process of  claim 9 , wherein the hydrogen is supplied at a rate of from about  1  mole of hydrogen/mole of input stream to about  10  moles of hydrogen/mole of input stream.  
   
   
       11 . The process of  claim 1 , wherein the reforming unit comprises a weight hourly space velocity of from about 0.5/hour to about 20/hour.  
   
   
       12 . A petrochemical process comprising: 
 introducing a first input stream to a cracking unit, wherein the first input stream comprises a naphtha feedstock;    cracking the naphtha feedstock within the cracking unit to form a first output stream comprising light olefins and pygas;    passing the pygas from the cracking unit to an extraction unit;    separating benzene and toluene from the pygas within the extraction unit;    recovering a raffinate from the extraction unit;    passing the raffinate from the extraction unit to a reforming unit having a reforming catalyst disposed therein;    contacting the raffmate with the reforming catalyst to form a second output stream; and    recovering the second output stream from the reforming unit.    
   
   
       13 . The process of  claim 12 , wherein the napththa feedstock comprises straight run naphtha.  
   
   
       14 . The process of  claim 13 , wherein the straight run naphtha comprises a N+2A value of from about 40 to about 55.  
   
   
       15 . The process of  claim 12 , wherein the cracking unit comprises a steam cracker.  
   
   
       16 . The process of  claim 12  further comprising hydrogenating the pygas prior to extraction.  
   
   
       17 . The process of  claim 12 , wherein the raffmate comprises a N+2A value of from about 75 to about 85.  
   
   
       18 . The process of  claim 12 , wherein the reforming catalyst comprises a Group VIII noble metal.  
   
   
       19 . The process of  claim 12 , wherein the reforming catalyst comprises a promoter selected from gallium, tin, copper, chromium, rhenium, iridium and combinations thereof  
   
   
       20 . The process of  claim 12  further comprising supplying hydrogen to the reforming unit.