[Gasification] gasifier type updraft

Tom Miles tmiles at trmiles.com
Sat Dec 17 10:00:01 CST 2011



The pyromid looks like a good  in-woods approach to converting slash to biochar.


Do you think that the pyrolysis blanket that is being developed by Carbon Cultures (Jenny Knoth U Washington) can be used to improve the performance of the pyromid? 


See video and story at: 








Tom Miles


From: gasification-bounces at lists.bioenergylists.org [mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of Thomas Reed
Sent: Saturday, December 17, 2011 6:43 AM
To: Discussion of biomass pyrolysis and gasification; STOVES
Subject: Re: [Gasification] gasifier type updarft use rice husk


Dear gassers and Stovers


Using any size TLUD device including an open PYROMID, and any junk biomass, we all have easy access to as much charcoal as we could ever need, for the first time in history.


Furthermore, Hugh McLaughlin tells me that, while it's not true activated charcoal, made with steam or CO2 at 800C, it has significant absorption capacity (iodine no 400?) since it is made at 500-800 C.  I hope Hugh or Frank will comment.  


So we really have no excuse for cleaning up TLUD gas if we wish to.  


I'm waiting for a good analysis of TLUD gas.  I suspect after cleaning it will have significantly more energy than the typical 5.5 MJ/m3 or 150 Btu/ scf of downdraft Woodgas, since the air fuel ratio for pyrolysis is only 1-1.5, rather than the 3.5 for complete gasification of the cellulose lignin package that is wood.   So, as a first guess, with 1/3 the A/F ratio, I'm guessing 3x the energy content, of 4.5 MJ/m3 or 450 Btu/scf.  Compare to natural gas at 1000 Btu/ scf. 


I'd sure like to see some comments from all you practical guys (and dolls?) out there.  




Tom Reed.   Dr WoodGas



Dr Thomas B Reed 

The Biomass Energy Foundation


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