[Gasification] "Continuous analysis of elemental emissions fromabiofuel gasifier"

[Jeff Davis]

Dear Doug & Tom,

Well, maybe there is some hope for reducing slagging of ag waste by
carbonizing it.

I would have liked to use the IDD (T-LUD) gasifier but I fear that as the
FP zone (flaming pyrolysis) moves downward the charcoal would condense and
store some of problem elements fore mentioned.

Maybe the old tried and true 55 gallon drum kiln, start the fire on the
bottom...

Maybe I can use my Gas-of-Fire 1000 to make the charcoal. Just run it in a
modified mode of operation. It would be cool if one could use the same
gasifier to make the fuel that will use the fuel. Of course later (if it
worked) a larger version for charcoal making gasifier might be in order.

Thanks for the replies,

Jeff



> Jeff, Doug,
>
> We dreamed about making this split with pyrolysis and with gasification.
> In
> both cases some stays with the char but most of the water soluble
> inorganic
> elements, like sodium, potassium, chlorine and sulfur go with the vapors
> or
> gas.
>
> Tom

> Hi Jeff,
>
> You raise an interesting point:
>
>> One of my books state that when gasifiing ag waste you need to carbonize
>> it
>> first (make charcoal). I have some major doubts, I think the problem
>> will
>> stay with the charcoal.
>
> Cannot comment on Ag waste, but it seems that there is validity for some
> elements to leave  the biomass as pyrolysis gas, leaving the carbon to
> then
> combust or gasify without problems. I refer to mainly woody biomass, but
> doubt if the same could be achieved with Ag waste , which can have a high
> silica content.
>
>> The question is: is it possible to vaporize and remove these problem
>> elements
>> when making charcoal?
>
> It is all theory until you try it with your choice of waste, so have a
> try,
> it beats reading about it (:-)
>
> Doug Williams,
> Fluidyne Gasification.


-- 
Jeff Davis

Some where 20 miles south of Lake Erie, USA