Environmental & Health Hazards of Fly Ash & SOx from FBC Power Plant at Khanote
Lakhra coal reserves are estimated to about 1328 million tones. Most of mined Coal in Pakistan has been used for power generation in addition to some other uses. Lakhra coal (lignite) reserves are very high in sulphur content, moisture and ash that not only cause environmental pollution but also cause operational problems. In order to avoid environmental & operational problems, clean coal technology (FBC technology) has been used globally because of its merits. In FBC power plant, sulphure is captured by using limestone. In Pakistan, 3x50MW power plant was installed at Khanote to utilize the lakhra coal for the first time. The present study is focused on formation of ash & sulphur. In the FBC power plant at khanote, the generation rate of fly ash & bottom ash was 55680 m3/hr and 16550 m3/hr respectively. Unexpected huge amount of ash causes environmental problem in shape of particulate matter that causes respiratory diseases in the workers. It also affects nearby villages by polluting agricultural land, cattles & habitants. The present research not only indentifies the risks on the basis of extensive experimental analysis, but also proposed solution for its proper disposal.
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