Exhaust Carbonization with 12/1 Listeroid
Submitted by Tom Miles on Thu, 2008-08-21 00:49
Exhaust Carbonization with 12/1 Listeroid
Rolf, Energies Naturales, August 15, 2008
Exhaust Carbonization: Exchanger screws into cyl. head left side, muffler comes on the right
-------------
Hallo friends of black magic,
just to make shure it works (or not) I made a little experiment in exhaust carbonization of granulated biomass .
It is a " quick and dirty " one ,I must admit but it gives a qualitative insight.
I run a 12/1 Listeroid on pure old veg oil. It puts out typically 2.5 kW el at 750 rpm, perhaps 1/3 load. The exhaust temp is around 360°C.The gas vol. of the 1.7 l engine should be around 10 l/s. I took the original muffler off and inserted a 1 1/2 steel pipe surrounded by a 50 mm square steel perfile.(pic ..28)All insulated with normal foam neoprene. The muffler went back on at the end of this exchanger
Beginning of carbonization
In the gap between the two pipes I filled almond shell bits and dust from a production line we run.(pic 36) it ranges from dust to 3 mm.
The engine runs and after a few min. the granulate begins to smolder.(pic 28) .I cover the upside, too and set a funnel fumes collector on top which leads the fumes into the engine´s intake(30)
Fumes to Engine Intake
Heavy fumes rise and the fuel pump rack moves in.
Temp. of the carbonizing biomass rises to 270 °C , measured with a thermopar. It eventually comes still higher since the whole granulate converts into fine black charcoal.(pic 35)
Charcoal
Compare the materials:(pic 33)
Charcoal and Shells
This was a crude experiment and not well prepared.
I measured the exhaust temp while on and it only dropped about 50 °C, which tells me that the exchange area is too small.
It is not hermetic, either.
I guess a properly loaded engine comes up to 420 °C and with a better xchanger we can heat the granulated biomass to 320 or more.
It won´t take much electrical energy in a ceramic(?) afterheater to raise the char , or just the fumes to a level where cracking of most long chain molecules occur.
Than cool it , take the dust out and feed it to the engine in dual fuel mode.
Who wants to make a quantitative experiment, since my time is too limited ?
Rolf
energiesnaturals@gmx.de
System