Coal Combustion Flashcards
Ultimate source of energy for coal
Sun
Coal consists of
compressed altered remains of vegetation
Coal formation (as it is compressed/lowered)
- peat
- lignite
- bituminous coal
- anthracite coal
Subjected to highest temperatures/pressures and therefore burns more cleanly
Anthracite coal
Coal is considered a ___________ rock
Biochemical
Coal is mostly made of
Carbon
Combustion reaction
Hydrocarbon reacts with O2 and releases a large amount of energy in the form of light and heat and produces CO2 and H20
CH4 + 2O2 –> CO2 + 2H2O
Combustion of methane
C3H8 + 5O2 –> 3CO2 + 4H2O
Combustion of propane
Combustion reaction is exo or endothermic…why
exo - because it releases energy in the form of light and heat
Insufficient oxygen supply during combustion causes
Production of carbon monoxide
Colourless, odourless, very poisonous gas
Carbon monoxide
Why is carbon monoxide poisiounous
Takes the place of O2 in hemoglobin molecule in blood supply of lungs - causing asphyxiation (suffocation)
Main by-product of coal combustion
CO2
How many grams of CO2 is produced for every 12g of Carbon burnt
44
Contributes to the formation of acid rain
sulfur oxide released by coal burning
Datong Coal Mining Group location
China
Proportion of CO2 emissions from China
1/5 of world