[Gasification] CO2 recycling

[Daniel Chisholm]

On Tue, 2007-02-10 at 22:27 -0400, gfwhell at aol.com wrote:
> ... CO2 as "recyclable" ... seems to have been missed by most.
> The addition of steam in the proximity of hot carbon is about all that
> is needed to produce CO.+H2
> Maintaining the  temperature is crucial for this reaction which is,in
> itself,  endothermic. I have been researching the possibility of
> providing the additional heat necessary to maintain this reaction
> which will allow the hot exhaust gas from an engine to be returned for
> recycling. I believe it will be possible to eliminate much of the
> nitrogen entirely from the reaction zone.. For some years now,  gases
> have been refined and processed with the use of microwave plasma. the
> temperature of which can reach 10000K,.

Just be sure that your process makes sense when operating under the
following rules:

2 - heat flows from high temperature to lower temperature (so the heat
in a 400-600C engine exhaust gas stream won't flow into an 800-900C
reaction zone - but it can be used to preheat incoming reactants)

3 - non-thermal energy is more valuable than thermal energy, typically
by a factor of 3X-7X.  (So any electricity, shaft power, etc that your
process uses must produce more than 3X-7X as much heat in the end, in
order for your process to be profitable).





-- 
- Daniel
Fredericton, NB  Canada