Petroleum and why you might be redneck

1. Petroleum and why you might be redneck Petr- “rock” Oleum - “oil”

2. It’s important to conserve petroleum resources • But what is it made of? • Crude oils underground have to be processed A petri dish of light crude oil A blob of crude washed up onto a beach after seeping out from underground 

3. We separate the crude oil by transporting it to refineries • Refined petroleum is a mix of hydrocarbons • Just H & C On oil tankers carrying 4.1 mil barrels (140 bil gallons) the crew uses bikes to get around. Cost around 1.4 bil to make

4. Cheapest way to transport • TransAlaskan Pipeline 800 mile • Prudhoe bay - Valdez • Crosses mtn. ranges, fault lines, permafrost • Nixon authorized • Oil travels warm

5. Maintenance • Can be surveyed by air in ~2 hours • Has been attacked • 1978 explosion • Forest fires, earthquakes • Used to be frequent spills, less now Pipeline on sliders where it crosses Denali fault

6. Signs you might be a redneck • 2001 drunken local man Dan Lewis • Shot hole in weld • Leak ruined 2 football fields of land, • 10K fine, 10 years in jail • Cost 17 mil to clean up • "I'll shoot it if I want. I'll put a hole right through it"

7. Plans for Alaskan Natural Gas Pipeline • Could we pipe oil from Alaska to Washington? • 1977 Justice Berger’s report  • From Vancouver • 5 mil. • 40K pages • Political, social, and envi impact • Conclusion: Probably shouldn’t, but wait ten years.

8. Today • Should gov’t give Alaska & Canada money to pay for such a pipeline? • Political MESS. I mean MESS • Indians have a big stake • ExxonMobil, BP, and ConocoPhillips want it • Texas Oil companies & ChevronTexaco don’t want $ going to support gas from Canada So Bush is against it. • More gas, but aren’t we too dependant already?

9. Burning petrol = ½ of U.S. E needs • An avg. U.S. Car travels 14,000 miles/ year • Heating and making electricity • Raw Material for stuff If both your dog and your wallet are on a chain…

10. From your experience What % of petrol is used for burning? What % is used for raw materials?

11. 89% of petrol is used as fuel • 7% is used for products and medicines • 4% lubricants, road-paving • For every gallon used to make something permanent and useful 5 gallons are burned

12. Combustion rxns • Burning hydrocarbons means reacting them with O2 and producing carbon dioxide gas, water vapor, and E • These end up in Atm. • It happens in your body

13. Burnt hydrocarbons are used up • They take millions of years to reform • It’s a nonrenewable resource

14. We have about 5% of the world’s reserve of oil but use 31%, Asia uses 27%, Europe uses 19% • The middle east has 66% of the reserves.

15. Seperation by distillation • If two mixed liquids have separate boiling points you can separate them. • Usually smaller molecules are easier to boil.

16. Dif. sizes of hydrocarbons boil at dif. temps. and are refined by fractional distillation • 15 story towers

17. As the boiling vapors rise they condense back into liquid form as they cool higher up • The heaviest hydrocarbons never boil, • Called bottoms • Petroleum jelly, and road asphalt

18. Fractional distillation towers

19. L.A. refinery

20. Last year there was a fire at the world’s largest refinery • Place employees 10s of thousands

21. World’s largest refinery • Venezuela 940,000 barrels per day (bpd) • Exxon owns one in Baytown U.S. (pictured right) • 557,000 bpd • If your mother has “ammo” on her Christmas list you might be from texas

22. Close by oil refineries • In PA most refineries are by Philly • Some are in top middle of state • Historical One in Venango county  • One in WV across the border from Aliquippa right on the Ohio river • 19,400 bpd

23. Components of petrol • Part’s of petroleum have boiling points lower than 40o C. • They only have 1-4 carbons • Weak intermolecular forces. • Used as heating fuels, plastics • Gas, kerosene, oils • 5-20 carbons If you have ever been in a fight over a hunting dog…

24. Carbon has 6 electrons • 2 filling in first shell • 4 valence open for bonding • Gives it versatility • Typically covalent bonds • Sharing electrons If you have ever stolen toilet paper…

25. Alkanes • A string of carbon atoms each forming a single covalent bond with 4 other atoms • Methane is simplest • Tetrahedron shape • Branched chains are possible • Isomers – same formula dif. shape If you have ever shot an animal on a golf course…

26. Fuels and Climate • Cold vs. hot means dif. fuel consumption • Transport, storage issues • What physical property of petroleum should engineers consider in this issue?

27. PA and Petrol History • Titusville, 1859 first U.S. oil well • Edwin Drake owned it  • Boom Town • At one time had more millionares per K of people than anywhere else If you take a fishing pole into Sea World…

28. Energy Trace • Take anything, a paper clip • What events took place to produce one and get it into your hands? • Where did the energy come from? • Is the cost of paper clips related to the materials used or the energy used? • Take a new car.

29. Fossil Fuels • Petroleum, Natural Gas, Coal • Carbon pressed from living matter in ancient seas 500 mya • Lots of potential E • We transduce the chemical E into movement, heat, light, sound • Law of Conservation of E: energy is neither created nor destroyed. • No reaction is 100% perfect some E is lost as heat. That’s why you’re 98.6

30. Automobile E conversions • What kind of energy change happens from the gas tank to Engine Cylinder? • Cylinder to Piston? • Piston to Crankshaft? • Crankshaft to Wheels?

31. Only 25% of the E in gas is converted to useable horse power. The rest becomes heat we have to deal with Exhaust, engine frictions, cylinder cooling A car on the free way could generate enough heat to fill 2 houses How do cars lose E

32. intake/induction stroke Gas/air mixture is sucked in • compression stroke Mixture is compressed • power stroke Mixture is ignited, expands • exhaust stroke Burnt mixture is expelled

34. Assignment • Show the work for determining how far one family car drives in a week. • How many miles can the car go on 1 gal? • How much gas does the car use in a year?

35. If an avg. car uses 23 mpg and travels 14,000 miles a year… • How much fuel is used in a year? • If gas is 3.00 a gallon how much is spent? • If gas increases 10 cents how much more is spent? • See http://www.fueleconomy.gov/feg/bestworst.shtml • See PetroleumFuelEconomy Worksheet • Collect each classes mileage and award class with lowest mpg

36. Altering Fuels • A barrel of crude is ~ 18% gasoline • It can be altered so that its 47% • Cracking • Heat 16 C Kerosene to 600o and it breaks into 2, 8 C octanes. • With a catalyst it’s only 500 • Catalytic Cracking Unit (Cat) 

37. Engine Knock • Gas is straight chain alkanes • Some times in the cylinder the compressed gas blows from the pressure before the spark plug ignites it. • Piston bangs against crankshaft at wrong time • “pinging” or “knocking”

38. An isomer of octane 2,2,4-trimethylpentane or isooctane for short is added and it doesn’t ping at all Why do you think its called 2,2,4-trimethylpentane To fix engine knock

39. Octane Scale • 100 is isooctane • 0 is straight chain heptane • Researchers test engines and engines under a load (towing) with dif. fuels to get an octane rating. • Usually 80s -90s • An 80 rating gas has the same knock as 80% isooctane 20% heptane

40. Thomas Midgely the Horrible • Working for GM he discovered tetraethyl lead reduced engine know • Improved octane rating by 3 or 4 • Lead is a neurotoxin and bad for you • Drove King George mad • One of those things that isn’t in nature normally, we introduce a lot.

41. They knew it was unhealthy but • GM, Du Pont, and Standard Oil started selling as much leaded gas as people would buy. • Workers at plants got poisoned • Spokesman said, “They probably went insane from working too hard.” If you have trophies for winning spitting contests…

42. Midgely had been severely poisoned • Only handled the stuff when in front of reporters. • Midgely went on to make CFC’s which caused the hole in the ozone layer. • Single organism whose had the biggest impact • Also from Beaver Falls

43. Oxygenated fuels • Replaced adding lead • Deliver less E per gallon • But increase octane number while reducing pollutants • More complete combustion, lower emissions

44. Methanol is a common additive • Can be made from corn, grass, wood • Saves oil • 10 % ethanol 90% gas mixture: Gasohol • AKA E10 • Viable energy alternative • But how much E does it take to grow the corn? • Getting popular in tropical regions where its easy to grow • About ½ gas in U.S. Contains Ethanol

45. E85 • 85% ethanol 15% gas • Used in midwest and Minnesota • 70 cents cheaper per gallon for cars that can burn it. • 27% less E per gallon but burns more efficiently.

46. MTBE • Methyl tertiary-butyl ether has an octane number of 116. • Reduced air pollutants • Was most common additive in 90’s but • Mixes easy with water • Leakage from underground storage contaminated groundwater • Bad taste & odor • Smells like turpentine • A spoonful would ruin a swimming pool

47. Diesel fuel • Density 850 g/L • Gas 720 g/L • 15% less • Also releases 15% less Joules • Easier to refine • Pollutes more per unit, but burns more efficiently so less polluting over all • Also more sulfur Rudolf Diesel

48. Laws for Diesel are becoming more strict

49. 6K gallons used during NEXTEL cup • 216,000 gal during 2006 season • A NASCAR Gets 3 mpg • Unregulated by EPA • What if rules changed? An organic farmer is going to hate Monsanto & the big farms. And customers might not want GMO Other customers might want whatever is cheap.

50. How long’s oil going to last • Controversy! • Idea of peak oil (Hubbert, ’56), based on production rates, reserves and the history of discovery you can predict when we’ll have found as much oil as we’re going to find. • But which #’s to use? • www.peakoil.net