Electrostatic precipitator |
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Electrofilter |
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| Process description |
Fly Ash Storage System |
| The electrofilter removes the incombustable parts of the coal, which are carried in the fluegas stream as flyash.The fluegases stream after leaving the steam generator, coming from the air preheater, in the lectrofilter through prallel, 30 cm wide openings. These gases are formed by plate-formed positively charged electrodes. Electrically isolated spray electrodes are suspended on which a negative voltage is applied. Undr the dinfluence of the electrical field the flow ash settles on he postiive plate electrodes. The filtered dust is shaken by an automatic, periodic vibration of a hammer mechanism from the plates, falls into the dust funnel and is subsequently lead to the flyash silos. From here ist is transported for furterh use as building material in the cement industry. The separating part in electrofilters is nearly 99,9%. The flyash collecting in the separators or discharge funnels is fine, dry and abrasive with a typical temperature of 140°C and a granulation size of up to 300 micometers. |
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