Info Centre >> Fuel and Lube Oil Technical Manual >> 1. The Basic Building Blocks >> Summary
Crude oil refining
Produces a range of useable products ranging from gases through base oils, distillates to residual products.
Straight run refining
Only uses distillation process, atmospheric and vacuum, and residue known as straight run fuel.
Secondary refining
Additional processes after distillation to increase yield of distillate products and reduce amount of residual fuel.
Fuel from secondary refining compared to straight run fuel:
1. Increase in density
2. Increase in micro-carbon value
3. Possible increase in compatibility and sediment problems
4. Possibility of contamination by catalyst fines