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Descripción
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| Fossil fuels satisfy more than 80% of the world primary energy demand; up to 29% of this amount comes from coal, only surpassed by oil with about 31% of the total. In the present time, coal is the most intensive resource used to generate electricity and heat but also used for the industry to produce chemicals and materials. Around 40% of the world power generation stands on coal, even this ratio appears much higher or lower depending on the country. Currently, coal is still the main source of energy employed to generate electricity, and its use represents the most competitive form of energy to increase the standard of living of any group or society, especially in non-developed or developing countries. However, climate policy has emerged particularly as a major driver for the future of coal for power generation in large parts of the world, especially in USA, Europe and, more recently, China, which may involve coal¿s share power generation globally fall to 36%. Coal extraction globally results in the associated production of around 10 ? 40% of waste coal, where higher values of waste coal correspond to underground than opencast mining. According to the type and origin of coal bed configuration, waste coal production mainly vary on quantity, calorific value or energy content, ash, volatiles and different forms of sulphur content. Waste coal is principally obtained during coal mining and coal washing activities, resulting in about 15% and 85% of the total waste coal produced respectively, depending on the coal country producer and technology used for. As a result, significant large amounts of waste coal with important energy content remains available and are piled throughout coal country producers. This paper evaluates the use of waste coal in a waste-to-energy system for improving the energy recovery to clean power generation and maximise the sulphuric acid (H2SO4) production by deployment of available technology. It includes an assessment of the most convenient implementation and integration of technology, maximising the contribution of waste coal in the waste coal-based fuel feedstock with minimum environmental impact, achieving and assuring emission limit values of critical pollutants comply with the most recent and strictest regulation. Sulphuric acid is used to make hundreds of compounds required by the industry in a variety of industrial and technical applications. The major end-use market is the fertiliser industry, the production of phosphates in particular. The suitable integration of available technology brings a potential reduction of CO2 emissions up to 60% in the proposed waste-to-energy system, also removes over 99% of sulphur content in the waste coal-based fuel recovered in the production of H2SO4. The waste-to-energy concept assessed and developed in the present research study results to be a sustainable solution of waste coal management, by minimising the environmental impact, being economically feasible and bringing a benefit to society. | |
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Internacional
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Si |
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Nombre congreso
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EUCHEMS |
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Tipo de participación
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960 |
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Lugar del congreso
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Sevilla, Spain |
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Revisores
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Si |
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ISBN o ISSN
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978-84-6088-219-0. |
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DOI
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Fecha inicio congreso
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11/09/2016 |
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Fecha fin congreso
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15/09/2016 |
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Desde la página
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1 |
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Hasta la página
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9 |
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Título de las actas
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Proceedings EUCHEMS |