INDIA is a Agriculture Rich country . Along the other crops Rice Husk is also widely grown throughout the Indian Sub continent.
In 1980 Rice Husk become a major fuel for Steam Boiler to take up Industrial steam and power demand.
Indian Industry is using Grate/ AFBC combustion technologies to burn Rice Husk In their steam Boiler furnaces.
Rice Husk Contains 18-20 % of Ash which further contains 95-98 % of Silica.
All steam Boiler is working with 75 to 82 % Thermal efficiency and Carbon content in ASH is 3-7 % approximate.
New Rice Husk Power Gen technology
ASH coming out of convention grates/ AFBC is Crystalline Silica which is not for any use and disposal is a Big problem, even it is carcinogenic also.
MAGO THERMAL with their Collaborator M/s Torftech Group, U.K . introduces latest combustion technologies which ensures Carbon in ASH less than 1 % and 100 % Amorphous silica in ASH.
Currently India is impoting 50 % of SIlica of Its total requirement and balance 50 % is getting extracted from SAND but in future there shall be a BIG problem in Getting Sand.
We as MAGO-TORFTECH is with latest technology which will not only reduce your fuel bill but also give you cost of your RICE HUSK ASH>
TORBED* Energy Technology Application Description Torftech ENERGY & AMORPHOUS SILICA PRODUCTION FROM
Global production of rice, the majority of which is grown in Asia, is approximately 550 million tonnes/year. The milling of rice generates a waste material-the husk surrounding the rice grain. This is generated at a rate of about 20% of the weight of the product rice, or some 110 million tonnes per year globally. The husk in turn contains between 15 and 20% of mineral
matter the majority of which is amorphous silica. There is a growing demand for finely divided amorphous silica in the production of high strength, low permeability concrete, for use in bridges, marine environments, and nuclear power plants. This market is currently filled by silica fume. IN INDIAN contest Limited supply and high demand has pushed the price of silica fume to as much as  INR 50,000/tonne in some markets. Rice husk has the potential to generate 16.5 to 22 million tonnes of ash containing over 90% amorphous silica that could be used as a substitute for silica fume.
Rice husk is currently being used for energy production through direct combustion orgasification in many areas of the world. Unfortunately, in almost all of these installations, the ash produced is not suitable for use as a silica fume substitute.
Generally there are twoshortcomings in the ash by-product from current rice husk to energy technology: first,
they cancontain unacceptably high concentrations of residual carbon; and second a portion of the amorphous
silica has been transformed into crystalline silica,cristobalite.
The second of these two problems is the more serious; cristobalite does not have the same pozzolanic (cementitious) properties, as the amorphous form, and in the particle size range at which it would be used in concrete, it is recognized as a potential human carcinogen. The transformation to the crystalline state takes place if the ash is exposed to high temperatures
and becomes even more likely if it is exposed to
these high temperatures for extended time periods. Most of the current energy generation technologies
do not control temperatures well and most allow the ash to remain at high temperatures for a relatively long residence time
TORBED Process Reactors applied to rice husk combustion
and gasification technology utilize a unique reactor configuration that completes the combustion or gasification
of husk in a short residence time at precisely controlled temperatures. It has been shown that,using the TORBED reactor technology, an ash can be produced at a moderate temperature that has zero or at mosttrace quantities of cristobalite
and a residual carbon content of 1-4 %.
Because of the moderate temperatures used in the TORBED reactor, there is a slight reduction in the usable energy that can be recovered from a TORBED reactor used as a rice husk combustor. However, in some instances this may be compensated for by achieving a much more complete combustion of the available fuel.
The TORBED reactor can be designed into a new facility to combust rice husk for energy production, or this combustor can be retrofitted into an existing facility to replace a current combustor that is producing an unusable ash waste. The capital investment in a replacement combustor will generate an attractive Return On Investment (‘ROI’) based on the benefits of
turning a waste disposal cost into a by-product credit.
Similarly,installation of new plant for energy generation will produce an attractive ROI based on both energy and ash values.

for details,  please clink on Link Below.

16-09-29 Rice Husk Power Generation Web Version

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Naveen Goswami

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