Several chemical products can be produced from the by-products of coal. Refined coal tar is used in the manufacture of chemicals, such as creosote oil, naphthalene, phenol, and benzene. Ammonia gas recovered from coke ovens is used to manufacture ammonia salts, nitric acid and agricultural fertilisers.
What are the products of coal?
Coal And Its By – Products: Coke, Tar And Coal Gas
- Coke: Coke is a high-carbon product obtained by the destructive distillation of coal. …
- Uses of Coke:
- Coal tar: It is obtained as a by-product in the process of making coke.
Which of the following is obtained from coal?
Naphthalene balls used to repel moth and other insects are also obtained from coal tar. Note: These days bitumen a petroleum product is used in place of coal tar for metalling the roads. (3) Coal Gas: Coal gas is mainly a mixture of hydrogen, methane and carbon monoxide.
What are the products obtained by the destructive distillation of coal?
The process breaks up or ‘cracks’ large molecules. Coke, coal gas, gas carbon, coal tar, ammonia liquor, and coal oil are examples of commercial products historically produced by the destructive distillation of coal.
What is the finished product of coal?
In addition to coke, coal processing results in aromatic hydrocarbons (benzene and phenol), coke-oven gas and coal tar, which are transported to specialist enterprises for further treatment and processing to produce crude benzene, benzene for synthesis, ammonium sulphate, coal tar electrode pitch, naphthalene, etc.
Is coke obtained from coal?
By distilling bituminous coal in retorts to obtain gas for illumination, or by burning it in kilns or pits, the residue left behind is called coke, which is simply coal charcoal, and is nearly pure carbon.
Why is coal still used?
That’s largely because of the shale gas revolution, which suddenly made natural gas cheaper than coal for generating electricity. … Global coal use continues to rise, especially in developing economies. About 38 percent of global electricity comes from coal, and in many countries it’s a mainstay for industrial uses, too.
Is petrol obtained from coal tar?
Clean liquid fuel was produced from the catalytic hydrogenation of coal tar using two serial fixed beds. … The analysis results of the products indicated that raw coal tar could be promisingly upgraded by catalytic hydrogenation in the serial fixed beds.25 мая 2012 г.
What kind of fuel is coal?
Coal is a solid fossil fuel formed over millions of years by decay of land vegetation. When layers are compacted and heated over time, deposits are turned into coal. Coal is quite abundant compared to the other two fossil fuels.
Which gas is produced when coal is burnt in air?
carbonic oxide (CO)
How is coal gas obtained where is it used?
Coal gas, gaseous mixture—mainly hydrogen, methane, and carbon monoxide—formed by the destructive distillation (i.e., heating in the absence of air) of bituminous coal and used as a fuel. … Coal tar and coke (qq. v.) are obtained as by-products.
Which is the best type of coal?
What are the types of coal?
- Anthracite: The highest rank of coal. …
- Bituminous: Bituminous coal is a middle rank coal between subbituminous and anthracite. …
- Subbituminous: Subbituminous coal is black in color and dull (not shiny), and has a higher heating value than lignite.
How is coal tar formed?
Coal tar is obtained by cooling the gas that is formed during the destructive distillation of coal to approximately ambient temperature. It is a black, viscous liquid composed primarily of a complex mixture of condensed-ring aromatic hydrocarbons.
Why is coal bad for the environment?
The burning of fossil fuels releases greenhouse gases into the atmosphere, increasing levels of CO2 and other gasses, trapping heat, and contributing to global climate change. … Coal-fired power plants release more greenhouse gases per unit of energy produced than any other electricity source (1).
Where is the coal found?
The largest coal reserves are in the United States, Russia, China, Australia, and India. In the United States, coal is mined in 25 states and three major regions. In the Western Coal Region, Wyoming is the top producer—about 40% of the coal mined in the country is extracted in the state.
What are the advantages of coal?
Advantages of using coal to produce electricity:
- Coal energy is an affordable energy source because of the coal’s stable price compared to other fuel sources.
- Coal is easy to burn.
- Coal produces high energy upon combustion.
- Coal energy is inexpensive.
- Coal is abundant.
- Coal energy is a reliable energy source.