Making fuel from wood.

Discussion in 'Propulsion' started by StianM, Dec 12, 2010.

  1. StianM
    Joined: May 2006
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    StianM Senior Member

    I'm building a syngas generator and was planing to run a duel fuel generator of it and was planing that I could make some diesel from the woodgas produced.
    If I could use woodgas to power the generator that produce the power needed to do the process I might be able to use woodgas as gas and the diesel produced as the second fuel and maybe a little extra to pour into my tractor and boat.

    I was reading that this could be done under 1-10bar pressure and with some steam and temperatures 150-300C and come iron (fe) as a catalysis.
    I was wondering what happens here and my guess is that carbons in the woodgas is forming hydrocarbons with the hydrogen in the water after the iron and oxygen has reacted with each other creating good old rust.

    Any experts on this mater?
    Any resources? goggle only provided me with formulas and not a good idea how to make a plant.
     
  2. Submarine Tom

    Submarine Tom Previous Member

    SM,

    I don't have your answer I'm afraid. Did you try typing your question into Google? The whole question? You may be surprised at the results. Changing the way you ask the question, even just one word, may make all the difference.

    Good luck, and don't forget, wood is fuel.

    -Tom
     
  3. wardd
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    wardd Senior Member

  4. StianM
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    StianM Senior Member

    Yes

    Tried and tried and did not get any practical out of it.'
    Just theory.

    Thanks Tom

    And this is helping me how? I already know how to make the gas.
     
  5. wardd
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    wardd Senior Member

    if there was an easy way to make diesel from wood it would be done
     
  6. StianM
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    StianM Senior Member

    The Germans did it in big scale 70 years ago.
    Most of the fuel they used during WW2 vas from syngas.
     
  7. wardd
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    wardd Senior Member

    they did it out of necessity because they had no oil

    not because it was cost effective
     
  8. SamSam
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    SamSam Senior Member

    A remarkably busy forum, maybe it's full of nuts. I haven't looked for years....

    http://tech.groups.yahoo.com/group/WoodGas/

    Maybe you're talking something different. I always thought woodgas was a gas like air, not a liquid like gasoline. But there was talk of an ethanol distillery around here that will use wood chips.
     
  9. Ike
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    Ike Senior Member

    Actually the Germans use anything they could get their hands on to make fuel. Wood, potatos, coal.
     
  10. cthippo
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    cthippo Senior Member

    There is, and there are a number of pilot scale plants in operation and a commercial scale one being built in Germany.

    It's called Fischer - Tropsch (FT) Diesel and it's made by reforming syngas into longer chain molecules in the presence of a catalyst. The wiki link provides a pretty good overview of the process and it's applications. The Air Force has done a lot of development work on it and nearly all jet aircraft in the fleet are certified to run on FT jet fuel. FT diesel is more stable than biodiesel and therefore easier to store and run.

    http://en.wikipedia.org/wiki/Fischer–Tropsch_process

    FT fuels can also be made from coal and this has been suggested as a way to reduce dependence on foreign oil since the US is coal rich and relatively oil poor. Running on coal doesn't do anything to help global warming, but once built the plants can also be run on biomass which is carbon neutral.
     
  11. CDK
    Joined: Aug 2007
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    CDK retired engineer

    You may find useful info starting here: http://www.biodieseldiscussion.com/ .

    The best place to look for details is the alt.sci.chem forum on usenet. There used to be a brilliant chemist called "uncle Al", extremely rude towards stupid questions but helpful in other cases. Several petrochemical engineers frequent that forum.

    What you are contemplating involves heating pressurized inflammable mixtures far beyond their combustion temperatures. That's the 'don't do this at home' category!
     
  12. sdowney717
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    sdowney717 Senior Member

  13. CatBuilder

    CatBuilder Previous Member

    I read briefly into this as a result of this thread and I am left scratching my head.

    They said on one of these links that a hundred something gallon tank of syngas pressurized to 3000lbs pressure (or something like that), could only move a car a couple miles.

    Why is this something worthy of pursuit?

    I would imagine just using a turbine or two and a real wood fire would be more efficient, no?
     
  14. TeddyDiver
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    TeddyDiver Gollywobbler

    For some it's a hobby.. http://www.juhasipila.fi/7 The pages are in finnish but maybe Google translates something understandable. He's my former boss from 20 years back and one kind of enthusiast for woodgas..
     

  15. CatBuilder

    CatBuilder Previous Member

    Ok, that makes sense. I thought people were looking at it for marine propulsion for some reason.
     
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