Question: Hydrogen. How do you get it out of an exhaust stream?

[dmhst...@gmail.com]

How do you get Hydrogen out of an exhaust stream and into a fuel
cell? Anyone have any ideas about how this might work?

[dmhst...@gmail.com]

Seems after some discussion with Chad at NRCS that the issue of
hydrogen capture might only be possible when we are not incinerating
the gases created by the pyrolysis. Therefore maybe hydrogen capture
could happen during the summer months when heat generation is less of
an issue. Or perhaps hydrogen could be captured when the oxygen added
to the wood gases to promote the burn is not operating, essentially
while the wood is smouldering. This might cause a need for a second
escape for flue gases. One that avoids the oxygenation part of the
furnace. Thoughts?

[dmhst...@gmail.com]

My thoughts are now to incorporate the charcoal making process as an
accessory to the wood gasification furnace. Essentially having two
separate exhaust streams which can be changed as heat demands change.
The primary exhaust method would provide heat for the house by passing
the heated gases through a heat exchanger. This is how a standard
gasification furnace works. A secondary exhaust would enter the
charcoal production chamber. This chamber would produce the charcoal/
agrichar. The wood gases from this process could be collected
separately from the firebox thereby preventing incineration in the
burn chamber. The charcoal production would occur when the house
heating system is not demanding heat. This will improve the
efficiency of the wood furnace by utilizing heat that would otherwise
be going up the chimney or into a dump zone.

Any thoughts?