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Nimitta Trading Pvt. Ltd. (NTPL)
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COAL FLY ASH
Category: Energy/Coal
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The fly ash produced from the burning of pulverized coal in a coal-fired boiler is a fine-grained, powdery particulate material

The fly ash produced from the burning of pulverized coal in a coal-fired boiler is a fine-grained, powdery particulate material that is carried off in the flue gas and usually collected from the flue gas by means of electrostatic precipitators, baghouses, or mechanical collection devices such as cyclones.

In general, there are three types of coal-fired boiler furnaces used in the electric utility industry. They are referred to as dry-bottom boilers, wet-bottom boilers, and cyclone furnaces. The most common type of coal burning furnace is the dry-bottom furnace.

When pulverized coal is combusted in a dry-ash, dry-bottom boiler, about 80 percent of all the ash leaves the furnace as fly ash, entrained in the flue gas. When pulverized coal is combusted in a wet-bottom (or slag-tap) furnace, as much as 50 percent of the ash is retained in the furnace, with the other 50 percent being entrained in the flue gas. In a cyclone furnace, where crushed coal is used as a fuel, 70 to 80 percent of the ash is retained as boiler slag and only 20 to 30 percent leaves the furnace as dry ash in the flue gas.(1) A general flow diagram of fly ash production in a dry-bottom coal-fired utility boiler operation is presented 

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  • Company Name:Nimitta Trading Pvt. Ltd. (NTPL)
  • Contact Person:Mr. Nitin Mittal
  • Telephone:91-22-41238822
  • Fax:91-22-27668811
  • Email:info@nimittatrading.com
  • Website:www.nimittatrading.com
  • Country/Territory:India
  • Address:512, Thacker Tower, Sector 17, Vashi, Navi Mumbai, Maharashtra, India
  • Zipcode:400703
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