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A facility used to manufacture coal gas, carburetted water gas (CWG), and oil gas is today generally referred to as a manufactured gas plant (MGP). In the early years of MGP operations, the goal of a utility gas works was to produce the greatest amount of illuminating gas.
Coal gas is combustible and was used for heating and municipal lighting, before the advent of large-scale extraction of natural gas from oil wells. In current practice, large-scale coal gasification installations are primarily for electricity generation (both in conventional thermal power stations and molten carbonate fuel cell power stations ...
The oldest type, introduced in 1798 by Murdoch, et al.; when the term "manufactured gas" or "town gas" is used without qualifiers, it generally refers to coal gas. Substantially greater illuminant yield with use of special "cannel coal", which may be modern oil shale, richer in hydrocarbons than most regular gas coal (bituminous coal). Wood gas
Because the slate of chemical products that can be made via coal gasification can in general also use feedstocks derived from natural gas and petroleum, the chemical industry tends to use whatever feedstocks are most cost-effective. Therefore, interest in using coal tended to increase for higher oil and natural gas prices and during periods of ...
At the same time, gas lights using natural gas or coal gas were coming into wide use. The invention of the internal combustion engine and its use in automobiles and trucks greatly increased the demand for gasoline and diesel oil, both made from fossil fuels. Other forms of transportation, railways and aircraft, also require fossil fuels.
Blue water-gas: Air, water or producer gas produced from clean fuels such as coke, charcoal and anthracite which contain insufficient hydrocarbon impurities for use as illuminating gas. Blue gas burns with a blue flame and does not produce light except when used with a Welsbach gas mantle. Lowe's Water Gas: Water gas with a secondary pyrolysis ...
The International Energy Agency says the share of coal, oil, and natural gas in global energy supply, stuck for decades around 80%, will start to edge downward and reach 73% by 2030.
Underground coal gasification converts coal to gas while still in the coal seam (in-situ). Gas is produced and extracted through wells drilled into the unmined coal seam. Injection wells are used to supply the oxidants (air, oxygen) and steam to ignite and fuel the underground combustion process. Separate production wells are used to bring the ...