What is coal And there importance in daily life
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Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams.
Coal is primarily used as a solid fuel to produce electricity and heat through combustion.
Worldwide natural gas generated power has increased from 740 TW in 1973 to 5140 TW in 2014, generating 22% of the worlds total electricity, approximately half as much as generated with coal.
Coke is a solid carbonaceous residue derived from coking coal (a low-ash, low-sulfur bituminous coal, also known as metallurgical coal), which is used in manufacturing steeland other iron products.[63] Coke is made from coking coal by baking in an oven without oxygen at temperatures as high as 1,000 °C (1,832 °F), driving off the volatile constituents and fusing together the fixed carbon and residual ash.
Coal gasification can be used to produce syngas, a mixture of carbon monoxide (CO) and hydrogen (H2) gas.
Coal can also be converted into synthetic fuels equivalent to gasoline or diesel by several different direct processes (which do not intrinsically require gasification or indirect conversion)
Refined coal is the product of a coal-upgrading technology that removes moisture and certain pollutants from lower-rank coals such as sub-bituminous and lignite (brown) coals.
Finely ground bituminous coal, known in this application as sea coal, is a constituent of foundry sand.
Coal is an important feedstock in production of a wide range of chemical fertilizers and other chemical products.[
Coal is primarily used as a solid fuel to produce electricity and heat through combustion.
Worldwide natural gas generated power has increased from 740 TW in 1973 to 5140 TW in 2014, generating 22% of the worlds total electricity, approximately half as much as generated with coal.
Coke is a solid carbonaceous residue derived from coking coal (a low-ash, low-sulfur bituminous coal, also known as metallurgical coal), which is used in manufacturing steeland other iron products.[63] Coke is made from coking coal by baking in an oven without oxygen at temperatures as high as 1,000 °C (1,832 °F), driving off the volatile constituents and fusing together the fixed carbon and residual ash.
Coal gasification can be used to produce syngas, a mixture of carbon monoxide (CO) and hydrogen (H2) gas.
Coal can also be converted into synthetic fuels equivalent to gasoline or diesel by several different direct processes (which do not intrinsically require gasification or indirect conversion)
Refined coal is the product of a coal-upgrading technology that removes moisture and certain pollutants from lower-rank coals such as sub-bituminous and lignite (brown) coals.
Finely ground bituminous coal, known in this application as sea coal, is a constituent of foundry sand.
Coal is an important feedstock in production of a wide range of chemical fertilizers and other chemical products.[
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