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Hello Mr Fujiura
I cannot answer your question of how to de-chlorinate your char for other
purposes, as chlorine isn't normally found in char residue from biomass
gasification. In fact it can be a low grade activated carbon.
Because your type of pyrolysis or gasification fuel is not stated, I can
only guess that it is a waste stream that includes P.V.Cs etc.
(MSW?)
In this situation chlorine could become fixed in the char when the
disassociation temperatures are insufficient to separate them from the
benzine ring and the whole lot carbonises fixing the chlorine into the
char.
The only safe way to dispose of these chars if you must use them, is in a
high performance throated gasifier where the chlorine will separate in the
high temperature reducing atmosphere.
Don't even consider burning this char to co-fire combustion processes as you
will then have to deal with a dioxin emission.
Hope this might help.
Doug Williams
Fluidyne Gasification.
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