[Gasification] Adobe Updraft Charcoal Gasifier

Mon Feb 25 16:22:29 CST 2008

Dear Andy and list. 
  We discuss with Oscar Baldoni also charcoal gaisfier builder about clay gasifier. 
  Our question was about load hatch and joints between metal and clay in tubes and cap. 
  For us to cool with water inlet tube is incomplete because if you obtain hot water probably is to produce steam to inject to gasifier. 
  Using white cast iron nozzles you dont need water. 
  "Chichin" Mascolo in Paysandu , Uruguay tells me in 1991 when we go to search charcoal gassers to drive cars. 
  Be careful; charcoal runs well in hot regions and I dont know why is not good for cool regions.
  Mysters of universe. 
  For run in firewood furnace ; theory and practice are completely different. Design of adobe is from the beginning of times. It is named "blast furnace" for iron ore, "cuba" furnace, "cupola" for melting gray iron. 
  Fundamentals is countercurrent mass flow and gasses producing high recovery of heat.
This kiln is used in limestone calcination for calcium oxide obtention.
  We study this and we are now in a region of Guapiara SP with enormous amount of lime kilns. 
  They use eucalyptus firewood to produce calcium oxide used in building and chemical industrys.
   Also is useful to dry wet ethanol to anhidrous.
   We make test last year. 
  But now we are thinking to "recarburizing" carbon dioxide generated in kilns. This is obtained adding charcoal to limestone charge. 
  When charge down take hot gasses to form carbon monoxide. 
  We must to make calculations of mass balance and thermal amounts . 
  For give the necessary heat we propose saw dust injected to one third high from bottom and cool air countercurrent to recover heat from calcium oxide.
   Our hot gasses and cool air blaster probably will made from two turbos in series. 
  Recently we buy one Lacom-Schwitzer from Mercedes truck and have another Holset Turbo for Volvo 12 liter.
   First stage is fueled with waste motor oil.
   Hot gasses pressure goes to exhaust turbine in first stage.
  This hot gasses  dry and pyrolizes saw dust.
   These gasses passes through second turbo giving force to blast cool air.

  We named our device "Multi-Firing/PETROGAS"

  Regards, Ben
andy schofield <scothebuilder at hotmail.com> escribió:

Dear Dr. Anderson, I Agree, This system is very interesting. Senior Benjamin Boff has since contacted Senior Danillo the builder, and encouraged him to post a description on a yahoo group. Senior Danillo shows a cut-away elevation of the reactor. It is a bottom-lighted updraft (BLUD), fueled with charcoal. 

My friend Mike LaRosa in Wisconsin, suggested he drip water into the hot char-bed. Senior Danillo later replied that it made a big improvement in engine power! Senior Danillo noted it is in mid-run that the H2 effect is the highest.

Senior Danillo has plans to construct an adobe Imbert-type for raw wood. This is a technically challenging project, and would be a great advance to the art. However, harvest time is approaching, and Senior Danillo has his skilled masons improving the coffee-drying facilities.

So far as I have learned, these are the answers to the questions you have asked: 1. Note the two green hoses connected to the water-jacketed air-blast pipe. This is thermo-siphon cooling so the nozzle won't burn up. 2. These are a series of chambers to cool the gas, and remove dust. They largely remain a mystery to me. No specific details as yet. 3. The instrument measures Ampere, Paul. I read ~30A. If the three wires you saw, were phases from the alternator, it would be a convenient way to harvest, and cook tasty and nutritious wild animals, however this is not the case. It would not be safe! Senior Danillo uses flexible power-cable to connect to his modern farm circuit. 4. Senior Danillo only uses clean charcoal in this system.

I can't wait to see what he builds next!

Andrew SchofieldPaul Anderson Wrote: > Benjamin and all,> > VERY interesting.> > What I think I see on the video:> > 1. This is an updraft gasifier. Looks like a hairdryer is the blower for the> primary air. There is a small water tank probably providing a mist of > H2O into> the bottom of the hot char bed, causing the water-gas reaction on the red-hot> char with much H2 and CO production.> > 2. Gases exit from the top of the gasifier and enter the top of what is> probably some filter and/or cooler and/or cyclone. Probably exit near the> bottom into a third but shortest "clay hump" furthest to the left in > the video,> coming upward to a horizontal pipe.> > 3. The horizontal pipe has several by-pass valves, but eventually goes to a> Chevrolet 261 engine that is driving a generator or reversed motor to produce> the electric current that is sent to an electrified fence. The reading on the> meter (is that amps?) is not clearly visible.> > 4. Fuel is not discussed, but the
 ignition is of charcoal in the bottom. If> this is fueled ONLY by charcoal, the gases could be clean enough for the> engine. But if fueled by raw biomass, I seriously wonder if they can get the> gases clean enough for long-term running and/or shut-down with cool off and> then restart.> > Benjamin, how much more info can you get for us? Fuel. Operation time. What> it looks like when reopened. How it is refueled. Diagrams or photos > of what> is inside the three clay humps. Who made it and where? etc.> > As I said, VERY interesting.> > Paul> > > Quoting Benjamin Domingo Bof :> > > http://www.youtube.com/watch?v=wlCzJj39cMM> > This is the video of gasifier made from clay in Brazil. Motor > > Chevrolet 261 drive an electric generator.> > Regards, Benjamin
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