Questions for the chemists out there...

[Javaman]

from a single 42 gallon barrel of oil, how much diesel is produced and how much gasoline is produced?

And from a single gallon of gas burned, how much CO2 is produced? Same for diesel?

Or possible a link to website that might have these answers?

this is for a long term project I'm putting together.

Thank you in advance.

[GliderGuider]

1. Here is a link

Here's more than you ever wanted to know about cracking oil, from The Oil Drum of course.

Roughly speaking, half a barrel becomes gasoline and about a quarter becomes diesel. But that varies depending on the grade of the crude and what the refinery needs.

From this source, a US gallon of gasoline (6.3 lb) generates 20 lb of CO2 when it's burned.

[Javaman]

2. Thank you so much!!! this will help enormously. :)

I will remember to credit you. :) That is if you just want your DU name used. :)

[Xipe Totec]

3. A quick, back of the envelope calculation

Hydrocarbons are composed (mostly) of hydrogen and carbon. Methane is one carbon, four hydrogen, Ethane is two carbon and six hydrogen. Each additional carbon brings two additional hydrogens. In the limit, The ratio of of carbon to hydrogen is 1:2

Molecular weight of carbon is about 12, hydrogen is about 2, so hydrocarbons are roughly three parts carbon to one part hydrogen by weight. Put another way, crude oil is 75% pure carbon.

The specific weight of crude varies but it is close to 0.8. A gallon of water weighs 8.33 lbs, so a gallon of crude weighs 6.664 lbs. Multiplied by 42 gallons gives about 280 lbs. 75% of it is carbon, so about 209 lbs of carbon in a barrel of crude.

The molecular weight of oxygen is 16 and there are two oxygens per carbon in CO2, or a ratio of 3:8 by weight.

Burning the carbon in the crude will consume 209 * 8/3 or about 560 lbs of oxygen, yielding 769 lbs of CO2 per barrel of crude.

more or less :shrug: