Systems and processes for production of fuel and fuel blends

1. A method for producing a butanol blended gasoline, comprising:

(a) operating an oil refinery to produce a light distillate product from crude oil, wherein the oil refinery comprises one or more octane upgrading units;

(b) feeding a naphtha feedstock to the one or more octane upgrading units to convert the naphtha feedstock to an upgraded naphtha product having a higher octane than an octane of the naphtha feedstock, wherein the light distillate product comprises the upgraded naphtha product; and

(c) forming a blend of at least the light distillate product and an amount of butanol to produce a butanol blended gasoline, wherein the amount of upgraded naphtha product in the butanol blended gasoline is from about 10% to about 50% by volume of the gasoline,

wherein throughput for the octane upgrading unit is less than throughput for the octane upgrading unit when the oil refinery is operated to produce a different light distillate product which is an automotive-grade gasoline free of alcohol.

2. The method of claim 1 , wherein the amount of upgraded naphtha product in the butanol blended gasoline is from about 10% to about 45% by volume of the gasoline.

3. The method of claim 1 , wherein the amount of upgraded naphtha product in the butanol blended gasoline is from about 15% to about 45% by volume of the gasoline.

4. The method of claim 1 , wherein the amount of upgraded naphtha product in the butanol blended gasoline is from about 20% to about 45% by volume of the gasoline.

5. The method of claim 1 , wherein the amount of upgraded naphtha product in the butanol blended gasoline is from about 25% to about 45% by volume of the gasoline.

6. The method of claim 1 , wherein the amount of upgraded naphtha product in the butanol blended gasoline is from about 30% to about 45% by volume of the gasoline.

7. The method of claim 1 , wherein the amount of upgraded naphtha product in the butanol blended gasoline is from about 30% to about 43% by volume of the gasoline.

8. The method of claim 1 , wherein the light distillate product comprises gasoline.

9. The method of claim 1 , wherein the butanol comprises isobutanol.

10. The method of claim 1 , wherein the upgraded naphtha product comprises the throughput product of a catalytic reformer unit.

11. The method of claim 1 , wherein the upgraded naphtha product comprises the throughput product of an isomerization unit.

12. The method of claim 1 , wherein the amount of butanol that is blended with the light distillate product is at least about 5 vol % of the butanol blended gasoline.

13. The method of claim 1 , wherein the amount of butanol that is blended with the light distillate product is at least about 7 vol % of the butanol blended gasoline.

14. The method of claim 1 , wherein the amount of butanol that is blended with the light distillate product is at least about 10 vol % of the butanol blended gasoline.

15. The method of claim 1 , wherein the amount of butanol that is blended with the light distillate product is from about 10 vol % to about 16 vol % of the butanol blended gasoline.

16. The method of claim 1 , wherein the amount of butanol that is blended with the light distillate product is from about 16 vol % to about 24 vol % of the butanol blended gasoline.

17. The method of claim 1 , wherein the amount of butanol that is blended with the light distillate product is about 16 vol % of the butanol blended gasoline.

18. The method of claim 1 , wherein the butanol blended gasoline is an automotive-grade gasoline.

19. The method of claim 1 , wherein the butanol comprises biobutanol.

20. The method of claim 1 , wherein the blending is at the refinery.

21. The method of claim 1 , wherein the blending is in close proximity to the refinery.

22. The method of claim 1 , wherein the butanol-gasoline blend satisfies vapor pressure regulatory requirements.