Black Panther 1,581 Posted November 7, 2019 Share Posted November 7, 2019 What are the by products? Quote Link to post Share on other sites
wheels 543 Posted November 8, 2019 Share Posted November 8, 2019 If you mean waste, non.By Products are not really such either. They are simply fractionating Hydrocarbon chains to whatever lengths (products) they want. Quote Link to post Share on other sites
Black Panther 1,581 Posted November 8, 2019 Share Posted November 8, 2019 A hydrocarbon consists of hydrogen and carbon. Isolating hydrogen will leave carbon, if the splitting of the hydrocarbon involves a catalyst it will be carbon and something else. Quote Link to post Share on other sites
Dtwo 157 Posted November 8, 2019 Share Posted November 8, 2019 Hydrogen + Oxygen = Water. That is the result of hydrogen "combustion". It isn't a Hydrocarbon. Quote Link to post Share on other sites
wheels 543 Posted November 8, 2019 Share Posted November 8, 2019 BP, there is no catalyst. It's simply a fractionating tower at a refinery. They make what they want depending on how they control the process. The differing products come off at different levels. Gasses are at the very top of the Tower. They are working with simple Hydrocarbon chains at the very top. Hydrogen and Carbon. The combinations of such make what they are after. All kinds of products are made at refineries. Not just oil, petrol and gas. Left overs of one molecule are added to another to make something different.Lets just say though, that there was an excess of pure carbon left over. There is a huge market for pure Carbon. So everything can be used. There is no stream of black waste being trucked to the local landfill or dumped somewhere if that is what you think. Quote Link to post Share on other sites
wheels 543 Posted November 8, 2019 Share Posted November 8, 2019 Hydrogen + Oxygen = Water. That is the result of hydrogen "combustion". It isn't a Hydrocarbon. Not what we are talking about Dtwo. Quote Link to post Share on other sites
Black Panther 1,581 Posted November 8, 2019 Share Posted November 8, 2019 Lets just say though, that there was an excess of pure carbon left over. There is a huge market for pure Carbon. So everything can be used. There is no stream of black waste being trucked to the local landfill or dumped somewhere if that is what you think. Thats what I'm after, what happens to the carbon? I doubt it comes out pure, but where does it go? Quote Link to post Share on other sites
Black Panther 1,581 Posted November 8, 2019 Share Posted November 8, 2019 Is this what you mean? methane reforming reaction CH4 + H2O (+ heat) → CO + 3H2 Water-gas shift reaction CO + H2O → CO2 + H2 (+ small amount of heat) Quote Link to post Share on other sites
Island Time 1,233 Posted November 8, 2019 Share Posted November 8, 2019 Last Sunday was privileged to go for a test drive in a Tesla model 3,0 to 100 in 3 seconds,full charge 650km apparently and if charged at home $2. $90k though. battery they say will last at least 300thousand kms before replacement.Hmm,Tesla specs dont agree with that. Longest range model is the 2wd long range, (just discontinued) claimed 512km on a 75kwh battery. At nz average power costs of round 20c per kwh, that's about 15 odd dollars...Still a cool car though, I'd have one . Quote Link to post Share on other sites
harrytom 642 Posted November 9, 2019 Share Posted November 9, 2019 Hmm,Tesla specs dont agree with that. Longest range model is the 2wd long range, (just discontinued) claimed 512km on a 75kwh battery. At nz average power costs of round 20c per kwh, that's about 15 odd dollars... Still a cool car though, I'd have one . https://www.edmunds.com/tesla/model-3 There's ample thrust from the 258-horsepower electric motor, and it moves out in a smooth, seamless way with no shifting interruptions. The rear-wheel-drive layout adds poise and confidence when you lay into it. Ours reached 60 mph in 5.3 seconds at our test track, which is properly quick. Dual-motor Model 3s are even quicker. Our panic stop from 60 mph took 123 feet, but this one has a range over 300miles (480 ish) One of the Model 3's big selling points is its range, and we think most buyers should strongly consider the Long Range Battery version. It,you know what salesman are like Quote Link to post Share on other sites
khayyam 68 Posted November 9, 2019 Share Posted November 9, 2019 Hmm,Tesla specs dont agree with that. Longest range model is the 2wd long range, (just discontinued) claimed 512km on a 75kwh battery. At nz average power costs of round 20c per kwh, that's about 15 odd dollars... Still a cool car though, I'd have one . Our night-rate EV power is ~11c/kwh, and some areas are lower. But you're right that it's not $2 (but still way less than ~$100 for petrol). Quote Link to post Share on other sites
wheels 543 Posted November 12, 2019 Share Posted November 12, 2019 Sorry for the delay BP. Your example is one way. But being a reaction, it may take more energy to produce than you get back. Catalysts can help, if one exists for the particular reaction. Fractionating Hydrocarbons simply takes heat. The steam process is a controled form of applying the Heat. As a Hydrocarbon chain is heated, it moves around violently and eventually breaks creating two shorter chains. More heat causes the shorter chains to break and so on, till eventually if you apply enough heat, the shortest chain divides. But interestingly, the long chains are the ones that need higher temperatures to break them, so in fact, as the chains break and become shorter, they do not require as much heat to continue the process as you would expect. Yet another process is being discussed here https://m.phys.org/news/2019-08-scientists-hydrogen-gas-oil-bitumen.html Quote Link to post Share on other sites
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