Module 1: Fuels characterization and energy balance
Lecture 8: Gasification: Material and Heat Balance
H balance
H from coal+ H from Moisture of coal + H from steam + H from moist air = H in tar + H in PG
(producer gas)
c)Water in producer gas = Moisture from coal + undecomposed steam
d) Nitrogen balance for amount of air Oxygen balance if required to check the results of calculation.
e)Ash balance to know amount of ashes, if not given.
The raw hot gas from producer can be delivered through insulated mains as such to the furnaces and plants nearby.
Advantages: Both potential energy of gas (CV) and sensible heat, can be utilized. Also PE + sensible heat of tar and soot will also be available.
A more prevalent practise is to cool the gas and purify it to remove deleterious constituents. E.g. H2S and then distribute to plants.
