Fuel from pine needles
Posted 13 June 2011 - 01:58 PM
I was initially thinking of pelletizing them and posted a thread at http://www.permies.c...hp?topic=8635.0 to get some ideas. The result has been very good. I am now leaning toward the idea of making briquettes rather than pellets.
Still at the research stage but I felt "permies" offered some good information. The community is large and responsive.
Posted 27 June 2011 - 08:47 PM
If I were faced with using pine needles as my primary fuel, I would consider to do something to pre-dry and lower the tar level before using them, sort of like either torrifying or charcoal making.
Some ideas to ponder / experiment with:
- warm up the needles to about 100 - 150 C to drive off the moisture and soften the tar
- press the still warm needles into a briquette
- drive the bulk of the tar off in a charcoal making process
- use the waste tar as fuel for the charcoal process
- expect a size shrink of about 2 - 3 x after charcoal making
- Press them into briquettes and see if it holds together
- warm to dry, then on to charcoal
If you are really ambitious, you could potentially capture some of that tar from the needles for other uses. At temperatures around 250 - 300C, you can sometimes obtain fairly good quality resins. In some countries, this has a market.
As you go hotter to drive off the harder to extract tars, the liquid gets more stiff - sort of like road tar.
At least this up-front work for fuel preparation testing can be done with almost no tools, as you can make a simple briquette press from a pipe, wood blocks, and a lever. There are a lot of videos about marking charcoal on youtube.
Posted 13 March 2012 - 05:35 AM
He has a number of youtube videos creating pellets from material sent to him from clients. He could probably tell you how pine needles pellet from experience and sell you a pellet mill that will match a power pallet.
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