Power

Coal Power Plants

Gravimetric Dosing Solutions for coal-fired Power Plants

State-of-the Art: Gravimetric Dosing of Coal Dust

Pfister® rotor weighfeeders have set a new standard for gravimetric dosing of crushed coal into the hammer mills of the boiler firing process in coal-fired power plants.

What is gravimetric dosing technology and how does it work? 
In gravimetric dosing integrated load cells are measuring the weight of the dosed fuel or material and dispatch the material based on this data. In the more outdated way of volumetric dosing just volume or mass is weighed. One of the benefits of gravimetric dosing is that
unavoidable variations in densitiy and/or humidity of the material or fuel can be considered.

For coal-fired power plants FLSmidth Pfister has developed a range of high-performance gravimetric dosing solutions which base on the patented rotor weighfeeder principle.

DOWNLOAD YOUR FREE BROCHURE ON GRAVIMETRIC DOSING SOLUTIONS FOR THE COAL POWER PLANT INDUSTRY WITH APPLICATION EXAMPLES HERE:

Title Image Brochure Power Industry

 

How do PfisterĀ® rotor weighfeeders with gravimetric dosing technology work?

Pfister® rotor weighfeeders are a quantum leap in continuous, gravimetric dosing of granular and lump coal or coke into a mill. The dosing system is completely enclosed and explosion-proof and is a "one in all" solution for  

  • extraction
  • weighing
  • dosing
  • feeding

 

Crushed coal is transported in the rotating wheel of the Pfister® rotor weighfeeder from the inlet to the outlet. The weighing axis is located through both bearings and through the middle of both inlet and outlet. The gravimetric force of the coal in the feeder is measured by the load cell. The measured value provides information on the coal mass in the rotor weighfeeder before material discharge. The required speed of the motor for the time of the discharge is calculated electronically. Due to this control strategy (prospective control ProsCon®) a highly accurate fuel dosing at the feeder outlet is achieved.

All Pfister® rotor weigheeder solutions support a more reliable and thus more efficient operation of coal power plants and help to increase your ROI.

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