[Gasification] CO2 recycling

[gfwhell at aol.com]

Ferruccio.


Your suggestion of recycling hot CO2 from an I.C. Engine
through the unburned fuel as a means of preparation for combustion is an
excellent idea.



After passing through the fuel, the gas will pick up
moisture providing some of the water required for making water gas. Because this reaction is endothermic, tending to lower the thermal reactivity in the hot zone. An additional aid is needed.




This is where;
an electrically maintained Plasma, should be employed, with the means of: delivering additional H2O
through hollow carbon burning rods.



The metered admission, of super heated steam, through the
rods, and into the plasma could be adjusted to provide the exact amount of
water required.



With the addition of H2O, for combination with the recycled
CO2 and the carbon being provided by the fuel. The gas will be converted to CO
+ H



Some power from the engine will be required for providing
the Plasma.



This can be obtained from a 100amp Delco or Bosch alternator.






GF





 


 


 

-----Original Message-----
From: Benjamin Domingo Bof <benjaminbof at yahoo.com.ar>
To: Ferruccio Pittaluga <pittalug at unige.it>; Discussion of biomass pyrolysis and gasification <gasification at listserv.repp.org>
Sent: Sat, 8 Sep 2007 1:57 pm
Subject: Re: [Gasification] CO2 recycling










Dear Ferruccio, recycling exhaust gases efficiency is poor because is present an 
half part of Nitrogen. Is very good to reuse CO2; britons was discover algae for 
transform this product in biomass. report says an device loaded over the car 
recovering all dioxide.
   Regards; Beniamino Bof

Ferruccio Pittaluga <Ferruccio.Pittaluga at unige.it> escribió:
  Dear all,
I have just read the following statements on a Jan 1942 paper by Torsten Kaelle 
(paper available at: http://www.hotel.ymex.net/~s-20222/gengas/kg_eng.html#fig6) 
referred to a coal gasifier for mobile applications:

"One could say, that the carbon-dioxide (CO 2 ) is the `fuel' from which 
producer gas, that is carbon monoxide (CO) is made. It could thus be considered 
a pure waste to generate carbon dioxide from charcoal, when the former ---as the 
final product of combustion in the motor---is available in sufficient quantities 
from the exhaust gases! It also goes without saying, that the larger portion of 
the CO 2 in the exhaust that can be reused for producing carbon monoxide, the 
more economically the gasifier operates, and the longer one can drive on the 
same amount of charcoal, and the cheaper the driving is. I therefore decided to 
mix a certain portion of the exhaust gases from the motor into the primary air. 
The combustion gases, passing from the combustion zone to the reduction zone 
will thereby contain more carbon dioxide than what corresponds to the consumed 
charcoal. The excess of heat will be consumed for reducing the excess CO 2 . If 
the portion of exhaust gases is small, the
 reaction will become complete and the producer gas becomes entirely free from 
CO 2 . In practice it is however better to let the producer gas contain one or 
two percent CO 2 . The heat value of the gas will not be significantly lowered 
by it, but it guarantees that all the heat is made useful. Further experiments 
showed, that the best effect was gained by an adding of about 17% CO 2 to the 
gasifier, which, under the condition that all of that was turned into CO, 
results in a significant saving of charcoal."

Has anyone got any experience on CO2 recycling within downdraft biomass 
gasifiers?
Many thanks.
Ferruccio Pittaluga

DIMSET/SCL - Savona Combustion Lab 
pittalug at unige.it 
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