254 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1947 



GASOLINE 



TEST DISTILLATE 



—THERMAL CRACKING - 



-GAS TO FUEL 

 -AGIO TREAT — 

 -TAR 



r— GAS OIL— ' 



_ LIGHT _ 

 NEUTRAL 



- PRESS -r-'"'' o^L^°-* RERUN - 



-TREAT ►FILTER 



^ HEAVY _ 

 NEUTRAL 



SLACK 

 WAX 



PRODUCTS 



_^ GASOLINE 

 (HI-TEST) 



FURNACE 



"distillate 



-TREAT -FILTER- 



.LIGHT 

 NEUTRAL OIL 



HEAVY 



'neutral oil 



-ACID TREAT-^ REFINED WAX 



. cylinder stock 

 "or fuel oil 



PUMP ( 1 



Q CRUDE ^ 

 1 oTl^I-^ 



FLOW DIAGRAM CRUDE OIL REFINING, 1926 



FiGUBB 5. 



