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Sulfur dioxide is an intermediate in the production of sulfuric acid, being converted to sulfur trioxide, and then to oleum, which is made into sulfuric acid. Sulfur dioxide for this purpose is made when sulfur combines with oxygen. The method of converting sulfur dioxide to sulfuric acid is called the contact process. Several million tons are ...
In 2014, approximately 100 Tg/S of sulfur dioxide (SO 2) was released, over half of which was from burning coal. [147] After release, the sulfur dioxide is oxidized to H 2 SO 4 which scatters solar radiation, hence its increase in the atmosphere exerts a cooling effect on the climate. This beneficially masks some of the warming caused by ...
The by-products of coal gas manufacture included coke, coal tar, sulfur and ammonia and these were all useful products. Dyes, medicines such as sulfa drugs , saccharine , and dozens of organic compounds are made from coal tar.
Fossil fuels such as coal and oil can contain a significant amount of sulfur. When fossil fuels are burned, about 95 percent or more of the sulfur is generally converted to sulfur dioxide (SO 2). Such conversion happens under normal conditions of temperature and of oxygen present in the flue gas. However, there are circumstances under which ...
Sulfur dioxide (SO 2) Typically coal contains anywhere from 0.2 to 5 percent sulfur by dry weight, which converts to H 2 S and COS in the gasifiers due to the high temperatures and low oxygen levels. These "acid gases" are removed from the syngas produced by the gasifiers by acid gas removal equipment prior to the syngas being burned in the gas ...
The nitrogen oxides are derived from the nitrogen in the ambient air, as well as from any nitrogen-containing compounds in the fossil fuel. The sulfur dioxide is derived from any sulfur-containing compounds in the fuels. The particulate matter is composed of very small particles of solid materials and very small liquid droplets which give flue ...
The sulfide is oxidized to a sulfite (PbSO 3), which thermally decomposes into lead oxide and sulfur dioxide gas (PbO and SO 2). The sulfur dioxide is expelled (like the carbon dioxide in the previous example), and the lead oxide is reduced as below.
The gas, upon burning, would form sulfur dioxide, which would be quickly oxidized to sulfur trioxide, and subsequently would react with the water vapor produced by combustion to form sulfuric acid vapour. In a dwelling-house, this could lead to the formation of irritating, poisonous and corrosive atmospheres where and when burnt.