Introduction:
Coal, a fossil fuel, is the biggest source of energy for the generation of electricity worldwide, as well as one of the largest worldwide anthropogenic sources of carbon dioxide emissions. Gross carbon dioxide emissions from coal usage are higher than those from petroleum and about double the amount from natural gas. Coal is extracted from the ground by mining or either underground or in open pits.
Properties:
Coal is a easily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. The harder forms like as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed of carbon along with variable quantities of other elements, chiefly sulfur, hydrogen, oxygen and nitrogen.
Types of coal:
Peat:
Peat is considered as the precursor of coal, has industrial importance as a fuel in some regions, for example, Ireland and Finland. In dehydrated form, peat is a effective absorbent for fuel and oil spills on land and water
Lignite:
Lignite, also referred to as brown coal, is the lowest rank of coal and used almost exclusively as fuel for electric power generation. Jet is a form of lignite, is polished and has been used as an ornamental stone since the Iron Age
Sub-bituminous coal:
Sub-bituminous coal, whose properties ranges from those of lignite to those of bituminous coal are used primarily as fuel for steam-electric power generation. Additionally, coal is an important source of light aromatic hydrocarbons for the chemical synthesis industry.
Bituminous coal:
Bituminous coal, thick mineral, black but sometimes dark brown, often with well-defined bands of bright and dull material, used primarily as fuel in steam-electric power generation, with substantial quantities also used for heat and power applications in manufacturing and to make coke
Steam coal:
Steam coal is a stage between bituminous coal and anthracite, once widely used as a fuel for steam locomotives. In this specialized use it is sometimes called as sea-coal in the U.S. Small steam coal (dry small steam nuts or DSSN) was used as a fuel for domestic water heating
Anthracite:
Anthracite, the highest rank; a harder, glossy, black coal used primarily for residential and commercial space heating. It may be classified further into metamorphically altered bituminous coal and petrified oil, as from the deposits in Pennsylvania
Graphite:
Graphite, technically the toppest rank, but difficult to ignite and is not so commonly used as fuel: it is mostly used in pencils and, when powdered, as a lubricant.
Understanding Molar Mass of Cs2 is always challenging for me but thanks to all math help websites to help me out.
Coal, a fossil fuel, is the biggest source of energy for the generation of electricity worldwide, as well as one of the largest worldwide anthropogenic sources of carbon dioxide emissions. Gross carbon dioxide emissions from coal usage are higher than those from petroleum and about double the amount from natural gas. Coal is extracted from the ground by mining or either underground or in open pits.
Properties:
Coal is a easily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. The harder forms like as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed of carbon along with variable quantities of other elements, chiefly sulfur, hydrogen, oxygen and nitrogen.
Types of coal:
Peat:
Peat is considered as the precursor of coal, has industrial importance as a fuel in some regions, for example, Ireland and Finland. In dehydrated form, peat is a effective absorbent for fuel and oil spills on land and water
Lignite:
Lignite, also referred to as brown coal, is the lowest rank of coal and used almost exclusively as fuel for electric power generation. Jet is a form of lignite, is polished and has been used as an ornamental stone since the Iron Age
Sub-bituminous coal:
Sub-bituminous coal, whose properties ranges from those of lignite to those of bituminous coal are used primarily as fuel for steam-electric power generation. Additionally, coal is an important source of light aromatic hydrocarbons for the chemical synthesis industry.
Bituminous coal:
Bituminous coal, thick mineral, black but sometimes dark brown, often with well-defined bands of bright and dull material, used primarily as fuel in steam-electric power generation, with substantial quantities also used for heat and power applications in manufacturing and to make coke
Steam coal:
Steam coal is a stage between bituminous coal and anthracite, once widely used as a fuel for steam locomotives. In this specialized use it is sometimes called as sea-coal in the U.S. Small steam coal (dry small steam nuts or DSSN) was used as a fuel for domestic water heating
Anthracite:
Anthracite, the highest rank; a harder, glossy, black coal used primarily for residential and commercial space heating. It may be classified further into metamorphically altered bituminous coal and petrified oil, as from the deposits in Pennsylvania
Graphite:
Graphite, technically the toppest rank, but difficult to ignite and is not so commonly used as fuel: it is mostly used in pencils and, when powdered, as a lubricant.
Understanding Molar Mass of Cs2 is always challenging for me but thanks to all math help websites to help me out.