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Wood gasification and high resin wood  RSS feed

 
Elliott Harrah
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My concern is about wood gasification is being able to use the wood here that is abundant and free pine sticky sappy pine high resin even when dry. Does your design have the capability to handle high resin wood to produce clean syngas. That is a major sticking point I have come across on several other designs.
 
Ben Peterson
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Elliot,

Without using your wood I can't say for sure, but a trick you could use is to heat up the wood in a metal drum over a fire to get those sappy volatiles to boil off. Have them shoot out into the flame below. Gently prechar the wood to de-sap it.

Are you getting problems with the wood sticking together inside the feed hopper or is the gas becoming tarry from that type of wood?

 
Elliott Harrah
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I get like a creosote build up I know if can get those volatile gasses to Crack there a huge amount of energy there to help boost production of clean gas
 
Ben Peterson
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You are right, there is alot of energy there. One time me and some of the guys tried putting kindling in a small gasifier so see what would happen. The damn thing ran 45 minutes in that test and it shouldn't have. I opened it up and the wood was barely charred off at the bottom, but it was the saps that had been boiled off the wood to power the single cylinder engine.

Creosote in the hopper is just part of the deal. Kinda the same as a fireplace. One trick you could use is to mix in charcoal with your sappy wood chunks so that the extra energy and the reactive surface of the charcoal can break those saps down. Try a load with 30% char and 70% sapwood and see if it smoothes things out.
 
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