Classification of coal ppt

What is the classification of coal?

Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.

What are the 4 types of coal and their carbon content?

Coal types

Coal	Dry, Carbon content (%)	Heat Content (MJ/kg)
Anthracite	86-92	32-33
Bituminous coal	76-86	23-33
Sub-Bituminous coal	70-76	18-23
Lignite	65-70	17-18

What are the characteristics of the four types of coal?

There are four different types of coal: Anthracite – contains between 86% and 98% carbon by weight and it burns in boilers slowly. Bituminous – contains between 69% & 86% carbon by weight. Sub-bituminous – contains less carbon, more water and is a less efficient source of heat for boilers.

Which is the best type of coal?

Anthracite is the best quality of coal with least ash content. Anthracite is a hard, compact variety of mineral coal that has a high luster.

What are the different types of coal and its uses?

There are six main types of coal that are regularly used by humans:

Peat. Peat is formed from decaying vegetation, and is considered to be the precursor of coal. …
Lignite. Lignite is formed from compressed peat, and is often referred to as brown coal. …
Bituminous/Sub Bituminous Coal. …
Anthracite. …
Graphite.

What is properties of coal?

Coal is a non-clastic sedimentary rock. They are the fossilized remains of plants and are in flammable black and brownish-black tones. Its main element is carbon, but it can also contain different elements such as hydrogen, sulfur and oxygen.

What are the main characteristics of coal?

Coal is composed of macerals, discrete minerals, inorganic elements held molecularly by the organic matter, and water and gases contained in submicroscopic pores. Organically, coal consists primarily of carbon, hydrogen, and oxygen, and lesser amounts of sulfur and nitrogen.

What are characteristics of coal?

black color & metallic luster. It contains between. …
slowly, with a pale blue flame & very little smoke. Bituminous coal (in Indiana), contains between.
69% & 86% carbon by weight. Sub-bituminous coal contains less carbon, more.
water & is a less efficient source of heat. Lignite coal, or brown coal, is a very soft coal that.

What are the types of coal Class 8?

There are six main types of coal that are regularly used by humans:

Peat. Peat is formed from decaying vegetation, and is considered to be the precursor of coal. …
Lignite. Lignite is formed from compressed peat, and is often referred to as brown coal. …
Bituminous/Sub Bituminous Coal. …
Steam Coal. …
Anthracite. …
Graphite.

What is a coal Class 8?

Coal: Coal is a fossil fuel, formed by the decay of vegetation which existed millions of years ago. Coal Gas: Coal gas is obtained as a by-product during the processing of coal to form coke, and is used as a fuel.

How many ranks of coal are there?

Types, or “ranks,” of coal are determined by carbon content. There are four types of coal, ordered from highest to lowest rank below. Anthracite, or “hard coal,” contains the highest amount of carbon out of all coal ranks (86%-97%)¹.

How are different types of coal formed?

There are four stages in coal formation: peat, lignite, bituminous and anthracite. The stage depends upon the conditions to which the plant remains are subjected after they were buried – the greater the pressure and heat, the higher the rank of coal.

What are the 10 uses of coal?

Uses of coal

Electricity Generation. Power generation is the primary use for coal worldwide. …
Metal Production. Metallurgical (coking) coal is a key ingredient in steelmaking. …
Cement Production. Coal is used as a key energy source in cement production. …
Gasification and Liquefaction. …
Chemical Production. …
Other Industries.

What are the used of coal?

Coal also has a myriad of other uses, including in cement production, carbon fibers and foams, medicines, tars, synthetic petroleum-based fuels, and home and commercial heating.

Who is coal?

Coal is a sedimentary deposit composed predominantly of carbon that is readily combustible. Coal is black or brownish-black, and has a composition that (including inherent moisture) consists of more than 50 percent by weight and more than 70 percent by volume of carbonaceous material.

What are the properties of coal?

black color & metallic luster. It contains between. …
slowly, with a pale blue flame & very little smoke. Bituminous coal (in Indiana), contains between.
69% & 86% carbon by weight. Sub-bituminous coal contains less carbon, more.
water & is a less efficient source of heat. Lignite coal, or brown coal, is a very soft coal that.

What are the effects of coal?

Coal impacts: air pollution

They include mercury, lead, sulfur dioxide, nitrogen oxides, particulates, and various other heavy metals. Health impacts can range from asthma and breathing difficulties, to brain damage, heart problems, cancer, neurological disorders, and premature death.

What is coal made from?

Coal is a black or brownish-black sedimentary rock that can be burned for fuel and used to generate electricity. It is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning).

What is the formula of coal?

Coal is divided into four classes: anthracite, bituminous, sub-bituminous, and lignite. Elemental analysis gives empirical formulas such as C₁₃₇H₉₇O₉NS for bituminous coal and C₂₄₀H₉₀O₄NS for high-grade anthracite.

What is the chemical of coal?

Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.