Alexis Belonio, Tran Binh, Doan Thi Minh Nguyet, and Bui Dinh Hai
VINASILIC SJ, Socialist Republic of Vietnam and Center for Rice Husk Energy,
Philippines January 24, 2010

MJA Biomass Gas Stove
Alexis Belonio, July 23, 2008
MJA Biomass Gas StoveMJA Biomass Gas Stove Burning Coal

Alexis Belonio writes (edited and annotated by Paul Anderson and Tom Miles):

Attached is a picture of my latest coal gasifier stove. This
is the same basic TLUD stove I have for wood charcoal and wood chunks.

For domestic use, I use carbonized coal (or coke) as fuel instead
of the raw coal. Coal can be used for the stove, but we don't want to promote
this as a fuel since it emits poisonous gas. I would prefer to use coal for
industry application where gas can be cleaned before it is released to the

I provide only a small amount of coal fuel in the gasifier stove, enough
for cooking. This mean that the power output is only small and the
metal I use is a stainless steel.

I ignite the carbonized coal by using a wood charcoal that has been soaked in
kerosene as igniter. [This is a TLUD stove, so ignition is at the top.]

[In the Belonio TLUDs, the fan only blows the primary air. The
secondary air is
pre-heated as it rises naturally between the fuel cylinder and the outer
cylinder, finally exiting into the rising flow of combustible gases.]
The smoke in the coal gasifier I have was eliminated [combusted] by mixing
preheated air with the gas generated from the reactor. I think
there is no need of [forced] mixing the secondary air by creating turbulence
with the combustible gases. Because in that case, you will need a
slightly bigger fan with enough pressure to push the air.
MJ Biomass Gas StoveMJ Biomass Gas Stove

Alexis Belonio

Top Lit Updraft (TLUD) Gasifier for Carbonized Coal
by Alexis Belonio, Immanuel Ginting, Djoewito Atmowidjojo, and Bony Minang
TLUD for Carbonized CoalTLUD for Carbonized Coal

Continuous-Flow Rice Husk Gasifier for Small-Scale Thermal Applications
Alexis T. Belonio, Appropriate Technology Center, Central Philippines University, Iloilo City, Philippines, November 11, 2006

Super Turbo Rice Husk Quasi Gasifier Stove
Alexis T. Belonio, Appropriate Technology Center (APPROTECH), Central Philippine University, Ioilo City, Philippines October 30, 2006

Select images to enlage.

Rice Husk Quasi Gasifier Stove with Center-in Steam Injector for Small-Scale Processing Industry
Alexis Belonio, Central Philippine University Iloilo City, Philippines, October 15, 2006

Alexis Belonio and Djoewito Atmowidjojo, Central Philippines University and Approtech Indonesia, August 30, 2007

Rice Husk Furnace for Recirculating Type Paddy Dryer (pdf)
Alexis Belonio, Central Philippine University, Iloilo, Philippines May 2006


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