Refining crude oil is a very complicated and EXPENSIVE process. To achieve financial solvency, even a small refinery would cost millions. The aromatic fuels you desire are only one fifth of the typical plants output, so you have to enter the distribution market to sell off the 'by-products' you don't need. More complication.
Yes, you can build you own home grown gear but the cost in energy to 'crack' crude will NEVER make it a viable home remedy. With electricy costs going to double or triple here shortly, there is not a cheap energy source for the cracking process. Its a catch-22 situation for the small guy. Even small refineries or synthetitc fuels plants have to be very efficient in order to be cost effective.
One last thing, petro-chemical enegineers with this skill are hinding under every rock! NOT! So finding one to help you may cost you and I'm not aware of any 'Mother Earth News" publication with articles on how to take home stuff from the dump and make your own syn-fuels.
FWIW....Geno
P.S. I share you concern on energy prices, especially after doing a $36 fill-up tonight, the first ever for my 8 year old truck! Wow.