Saturday, March 31, 2007
This thing is still on?
(Title references this, BTW.)
I logged in to post comments elsewhere, and got a surprise: the dashboard page, which I never thought I'd see again. At least per superficial appearances, no action on my part was required to keep going past... what, exactly? Was the blog converted? Is this now a Google account? I have not the foggiest idea.
If I can still post, and if Google recovers some respect for free speech, I may just stay here. But I'll probably convert all the timestamps to an easily-converted format just in case.
In the interim, I posted two stories to The Oil Drum: That cubic mile and H2CAR: Another blind alley. I hope this is not news to you, but if it is... enjoy!
¶ 3/31/2007 12:34:00 AM
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I saw that you mentioned "torrefaction" as a method for storing/transporting biomass over at GCC. What is that exactly? Just pelletizing the biomass or pyrolyzing it first?
Torrefaction is a heat-treatment which does not involve combustion (no "pyro", thus not pyrolysis) and is done at relatively low temperature and at a low ramp rate. The biomass loses only about 10% of its energy, but 30% of its dry weight (and nearly all of its moisture); the product has very few hydroxyl groups compared to raw biomass and is relatively hydrophobic, taking up very little water. I just learned about this process recently, and it looks to be better than carbonization for immediate processing followed by long-term storage.
See http://www.techtp.com/recent%20papers/ECN-Torrefaction%20for%20biomas%20upgrading%20-2005.pdf
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See http://www.techtp.com/recent%20papers/ECN-Torrefaction%20for%20biomas%20upgrading%20-2005.pdf
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