What is coal tar what are its uses? - PowerPoint PPT Presentation

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What is coal tar what are its uses?

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Coal tar what are its uses : Coal tar is a thick black liquid that is a by-product of the production of coal gas and coke. It contains many biochemicals such as benzene, naphthalene, phenols and aniline. – PowerPoint PPT presentation

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Title: What is coal tar what are its uses?


1
What is coal tar what are its uses?
  • What is coal tar?
  • Coal tar is a thick black liquid that is a
    by-product of the production of coal gas and
    coke. It contains many biochemicals such as
    benzene, naphthalene, phenols and aniline. It
    gets used for medical and industrial purposes.
    However, coal is also known as Mulch, Balnet,
    Alcohol Carbonis detergents, and Alcohol
    Carbonaceous Carbonis.

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2
What are the uses of coal tar?
  • Coal tar is a remedy for itching, scaling and
    skin diseases.
  • It gets used to treat dandruff and lice and gets
    used for medicated shampoos and soaps.
  • Various phenolic coal tars have analgesic
    properties.
  • Coal tar gets used to protect and beautify
    pavements, roads and parking lot seal-coat
    products.
  • Coal tar is flammable. Therefore, it gets used
    for heating.
  • Coal tar is one of the binders used for making
    green blocks in the graphite industry.
  • Coal tar gets used in construction paints,
    synthetic dyes and photographic materials.

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3
What are the properties of coal tar?
  • The characteristics of coal tar are
  • The colour is black.
  • It is semi-solid and semi-liquid in nature and is
    highly permeable.
  • Its density is very thick and has a
    characteristic odour.
  • Tar is insoluble in water.
  • It has a boiling point between two hundred and
    fifty degrees Celsius.
  • It is fuel resistant and is subject to higher
    temperatures than asphalt cement

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4
What is coal gas?
  • Coal gas is one of the most useful fossil fuels.
    The mixture of gases obtained by distillation of
    coal got used for lighting and heating
    historically.
  • It has many applications like domestic heat
    generation, industrial generator firing, and cast
    iron manufacturing. These byproducts are also
    beneficial for us.

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5
What are the uses of coal gas?
  • Uses of coal gas are
  • Most commonly, it is used as fuel.
  • Coal gas gets used for lighting.
  • It gets used for heating.
  • Most of the people use this gas for cooking.
  • Coal gas is also used as a lighter material.
  •  

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6
What is the formation of coal gas?
  • Coal gas gets extracted from the distillation of
    soft coal, a by-product of coke. It has no
    definite structure. Most coal gases contain some
    hydrogen methane and other hydrocarbons, such
    as carbon monoxide (carbon dioxide), carbon
    dioxide and nitrogen.

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7
Coal oil and gas production
  • Plants and animals decompose to produce fossil
    fuels. These fuels are found in the Earths crust
    and contain carbon and hydrogen. We can burn
    these fuels to produce energy. Oil first got
    discovered as a solid between layers of
    shale-like debris.
  • Fossil fuels include crude oil, coal and
    natural gas. They got created over millions of
    years from the remains of dead organisms (coal
    formed from dead trees and other plant waste).
    Dead sea creatures also got used to generate
    crude oil and gas. Petroleum is a fossil fuel
    also known as crude oil.
  • Petroleum gets produced from the remains of
    ancient marine life such as plants, algae and
    bacteria, and coal and natural gas. It is a
    fossil fuel composed of microscopic plants and
    animals. When these species die, they sink to the
    bottom of the ocean and become trapped under
    several layers of sand and silt.

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8
What is the structure of coal gas?
  • Coal gas, also known as a gas mixture, is the
    fuel for hydrogen, methane, and carbon
  • monoxide, produced by destructive distillation
    (continuous heating in the absence of
  • air) of bituminous coal. Coal is composed of
    carbon with varying proportions of
  • additional elements such as hydrogen, sulphur,
    oxygen and nitrogen. Coal gets
  • produced when dead plant matter gets
    theoretically decomposed. Then the
  • decomposed matter gets converted into coal by the
    heat and pressure of a deep grave
  • over millions of years.
  • The general composition of coal gas is as
    follows
  • Hydrogen 50
  • methane 35
  • carbon monoxide 10
  • ethylene 5

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9
What are coke and its uses?
  • Coke is a high carbon product obtained by
    destructive distillation of coal. Coke is high
  • in carbon, which is said to be an almost pure
    form of carbon. Coke is grey-black, thick
  • and porous.
  • Uses of Coke
  • The most common use of coke is as a fuel for
    stoves, furnaces and kilns. It is sometimes
    preferred over coal because burning coal produces
    far less smoke.
  • It is also used for the production of iron in
    blast furnaces.
  • Coke is used to make steel and many other
    materials.

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10
Frequently asked questions (FAQ)
  • 1. What is producer gas?
  • Producer gas is the product of burning coal or
    coke with a small amount of air and a limited
    amount of moisture. Producer gas is a gaseous
    mixture of carbon monoxide, hydrogen, carbon
    dioxide and nitrogen.
  •  
  • 2. What is the difference between coal gas and
    natural gas?
  • Coal gas is a flammable gaseous fuel that is
    produced from coal and supplied to the end
    consumer. Natural gas is a fossil fuel used for
    heating, cooking and generating electricity.
  •  
  • 3. Why is coal gas poisonous?
  • The nitrogen in coal, like sulfur, reacts with
    oxygen in the air to form nitrogen oxides.
    Nitrogen oxides can react with them to produce
    ozone and other pollutants. Humans and other
    animals and plants are at risk from these toxins.

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11
Frequently asked questions (FAQ)
  • 4. Is coal gas still used?
  • Coal gas is combustible and was used for heating
    and municipal lighting prior to the large-scale
    extraction of natural gas from oil wells. In
    current practice, large-scale coal gasification
    installations are primarily intended for power
    generation or chemical production.
  •  
  • 5. What is coal made of?
  • Coal is a waste rock that is black or grey-black
    in colour and can be burned for fuel or used to
    generate energy. It is primarily composed of
    carbon and hydrocarbons, both of which contain
    energy that can be released during combustion
    (burning).

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