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Negative Impacts of Coal and Clean Coal Technology - Research Paper Example

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[Submitted to] [Course] Negative Impacts of Coal and Clean Coal Technology Coal is naturally present inside Earth, it is usually black in color and sometimes brownish black (Merriam-Webster). Records show that coal started to form more than 300 million years ago through the burried plant fossils especially trees located near the lakes…
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Negative Impacts of Coal and Clean Coal Technology
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Download file to see previous pages Different types of coal are found inside the Earth in collective form which are then extracted and used for different purposes (The formation of Coal: Planete Energies ). CLASSIFICATION Classification of coal is done on the basis of transformation of the plants. The more transformed plant material the better is the form of coal. The type of coal is determined by a process known as Proximate Analysis. In this process the constituents of coal are analyzed for classification. Various constituents of coal are water, volatile substance, carbon and dust. Coal is mainly classified on the basis of carbon present in it and the relative heat energy it can produce. There are two ranks of coal; lower rank consists of lignite and sub-bitunimous and the higher rank consists of bitunimous and anthracite. Lower rank coal has low carbon and energy levels. They are soft and friable in nature with somewhat brownish appreance. The higher rank coal has high carbon and energy level. They are hard and strong in nature with complete black apprence. However, along with coal, peat is also present with is not classified as coal because of its characteristics yet it plays a very important role in the formation of coal (The Energy Library: Types of coal). Peat It is not coal but it is related to the process of formation of coal. It has a soft apprence and it consists of deposited plant substances along with other chemicals. They are present in the wetland areas of Northern Hemisphere. Lignite It is also known as brown coal because of its apprence. It contains upto 60% carbon and 50% volatile substance. It can not produce high level of energy and therefore it is not traded in the market. It is usually used in power stations and industry boilers which are close to the coal mines. Since it has a soft texture therefore it is easily converted into gas or petrolem. Sub-bitunimous Next layer after lignite is of Sub-bitunimous coal which is formed by the plant fossils that are burried deeper in the soil. It is hard and dark in color as compared to lignite and it can produre high level of clean energy as it has lower sulphur composition. Bitunimous It has upto 80% carbon and produces higher level of energy. It is also known as sedimentary rock because it possess deeper plant fossils and minerals. It generates smoke and dust when burned. The appearance of the coal is either dark brown or black with fine texture. It is significantly used in electric producing plants and industries and it is very appropriate for steel making. Anthracite It is ranked as the highest type of coal because it contains higher level of carbon. It is very hard and completely balck in color. It produces less smoke and lower flame. Anthracite is also known as blue coal, stone coal, black diamond, etc. It is found usually in the mountain ranges. USES Coal is substantially required to fulfil the present and future energy demands. Following are the most important uses of coal (World Coal Association: uses of coal): It is used as liquid fuel in production of steel, cement and electricity. Coal plays a major role in paper manufacturing, chemical industry, pharmaceutical sector and in rifnery of aluminia. The coal by-products are also used in production of certain chemicals. Coke ovens produces Amonia gas which is then used to produce ammonia salts, ferilizers and acids. Products of daily usage such as soap also contains coal. ...Download file to see next pagesRead More
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