E. Answer the following questions.
1.
Describe, in brief, the process of 'coal formation'.
2.
Differentiate between lignite and bituminous coal.
Answers
Answer:
The formation of coal begins in areas of swampy wetlands where groundwater is near or slightly above the topsoil. Because of this, the flora present produces organic matter quickly - faster in fact than it can be decomposed. In these areas, layers of organic matter are accumulated and then buried. It is these layers of organic material that then form coal. The energy in coal initially comes from the Sun, and is energy from sunlight trapped by dead plants.
Lignite is easier to ignite while bituminous coal is easier to burn out.
Effect of temperature higher than 700 °C on coking characteristics is small.
Lignite LW tends to slag due to its mineral content forming amorphous eutectics.
Coking tends to keep alkaline oxides stay in the char and reinforce slagging.
Hope it helps u
Answer:
coal formation : Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. ... Some iron and steel making and other industrial processes burn coal. The extraction and use of coal causes many premature deaths and much illness.
difference between lignite and bituminous coal : Lignite is easier to ignite while bituminous coal is easier to burn out. Effect of temperature higher than 700 °C on coking characteristics is small. Lignite LW tends to slag due to its mineral content forming amorphous eutectics.