Fly Ash
From Fly Ashes
THE PROBLEM: From 1970 to 2030 world coal consumption will double. Asia is the leading continent in this increase. India is currently producing 140 million tons of ash generated by its existing coal fired power stations. The shortage in the electricity supply to fuel the growth of Indian industries requires more power stations. Coal is readily available in India and most of the planned power stations will be again coal fired.
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Technology Overview
Ash production will raise to 200 million tons/year by 2030. Approximately 80 % of all generated ash is Pulverized Fuel Ash (PFA) trapped in electrostatic precipitators to reduce the air pollution. Approximately 20% of all ash is Furnace Bottom Ash (FBA). In 2006 Indian statistics claimed that 50 million tons/year of PFA had not been disposed of but utilized in one way or the other. This means that 90 million tons of ash per year are disposed of into lagoons or on ash heaps. Large areas of arable land are covered with PFA deposits creating environmental pollution.
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