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You seem to be an expert on this topic. I wouldn't expect them to have the exact same characteristics. Kerosene as it is used in aviation today is distilled f
by mulmen 4y ago
You seem to be an expert on this topic. I wouldn't expect them to have the exact same characteristics. Kerosene as it is used in aviation today is distilled from crude oil extracted from the ground. This is synthesized gas that is then refined. My question is how much of NOx and particulate emission is from impurities and what the differences are between the synthetic and conventional kerosene.
Is there a way to make a kerosene with less NOx and particulate emission that simply isn't practical today? Since we need to ramp up renewable energy sources to synthesize this fuel can that economy of scale justify some currently impractical process?
The way I read the Wikipedia article on NOx [1] it sounds like NOx comes from nitrogen in the fuel. Is it possible to reduce or eliminate this nitrogen and then emit less NOx? I also parse the Wiki article to suggest the nitrogen is from coal and oil based fuels, which the technology in the article is not.
[1]: https://en.wikipedia.org/wiki/NOx#Fuel https://en.wikipedia.org/wiki/NOx#Fuel
- gumby 4y agoSyngas can be made from various sources, and of course the feedstock can affect the resulting composition. Atmospheric chemistry also plays a role. So reduction in NOx and in particular SOx are possible. But they are also high pressure, high temperature reactions, in particular in a turbine, and the principal component of the atmosphere is N2. So I think we’d have to see what happens. On particulate pollution: soot and other particulates result from incomplete combustion, so I doubt there would be much change. Note that particulate and SO2 pollution in the upper atmosphere reflect sunlight before it reaches the surface of the earth. So reduction in SOx and soot has actually allowed the earth to heat more! (It still was good that action was taken, and continues to be taken, on those pollutants)
- deleted 4y ago[deleted]
- deleted 4y ago[deleted]
- bluGill 4y agoThis is a really complex question and I don't think chemists completely know the answer. If nothing else because we can directly control the molecules coming from this process we can design an engine and the fuel around each other such that we minimize what is produced. The only way to complete remove NOx production is some sort of N2 filter in the air intake. While it is easy to propose such a thing on the internet, it is not known how to create such a thing in the real world.