Most industries have always had to trade off between high fuel costs and a clean working environment. Gasification, refers to the process of converting solid fuel to its gaseous components in limited air and controlled temperature conditions. Typical wood contains about 44% carbon which is oxidized to carbon monoxide (a flammable gas), 6% hydrogen (a flammable gas), 42% oxygen (supports combustion), and less than 0.5% non-combustible elements such as silica, calcium etc (ash). These flammable gases are produced under controlled conditions in the Gasifier Chamber, where for example, 1 kg of wood plus approximately 2 kg of air chemically combines to approximately 3 KG of flammable gas (producer gas) plus a trace of ash. The producer gas can be piped to the furnace and burnt in place of liquid fuels.
Reduced Energy cost - Replace expensive liquid fuels by low cost solid fuels. Typically the cost of replacing one litre of liquid fuel works out to between Rs. 5-10, depending on the application & type of fuel used for gasification.
Extremely fuel-efficient combustion
High combustion temperature (cleanliness and efficiency)
Exceptional ease of control - the heat can be increased/reduced by just adjusting a valve.
Fuel Flexibility: can combust cleanly and efficiently, fuels from 6% to 45% M.C., (We Basis)
Clean working environment at the system is' situated away from the load.
Less dirt left on heat exchanging surfaces
|Liquid Fuel||Wet Wood 40-45% moisture||Dry Wood 25-30% moisture||Briquette||Charcoal|
|I 1 Litre||4-5 kg||3-4 kg||3-3.5 kg||2-2.5 kg|
The producer gas from the gasified can be used to replace liquid petroleum fuels like diesel, LDQ, furnace natural in most thermal applications. However, gasification is most suited for industries that require low and medium grade heat up to 400- 500 cop. The potential application are an be broadly categorized into the following three groups