Thank you for the information about Harald Steppat and his collection
of gasifiers. I will be in touch with him to see if he can provide me
some specific details about the Kalle gasifier, specifically the wind
sieve for conveying the solids from the cyclone back to the gasifier. I
have been trying to make the calculations work out, but they don't seem
to, so there must be more to the story.
I have not worked with char gasifiers before, but my present opinion is
that using gasifiers for transportation fuel makes the most economic
sense, and hence the best application to explore. In order to make
gasifiers a viable option, their operation needs to be made as
consistent and predictable as possible and "refining" the fuel by using
charcoal, you would have improved storage and handling characteristics
of the fuel, hence making the system more consistent and user friendly.
I am in Southern Minnesota and do a lot of work with material processing
and handling technology, such as pellet mills, kilns and grinders. An
area I have explored extensively is flow characteristics of bulk solids,
such as sawdust flow patterns in a storage bin. I have not seen any
research on design concepts for a gasifier to facilitate mass flow of
the fuel to improve performance and reliability. My feeling is that
with mass flow design and electronic sensors and controls, gasifier
operation could be simplified and become a viable option in applications
such as construction and agricultural equipment. Ideas and advice are
always welcome.
John Zander
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