Fired heaters

Advantages

  • lower energy costs
  • reduced maintenance
  • extended performance life
  • high thermal resistance
  • resistance to chemical attack

Insulation systems to optimise operational efficiency

A fired heater, sometimes referred to as a furnace or process heater, is a direct-fired heat exchanger that uses the hot gases of combustion to raise the temperature of a process fluid feed flowing through coils of tubes aligned throughout the heater. Some heaters simply deliver the feed at a predetermined temperature to the next stage of the reaction process; others perform reactions such as thermal cracking where high temperatures (up to 750 °C)break up large hydrocarbons into smaller, more useful components.

The heater design can be very flexible and utilizes both radiant and convective heat transfer.The most common configurations for these heaters are horizontal chamber and vertical cylindrical. Fired heaters are extremely demanding applications and because of the very high energy demands they need high quality insulation systems to optimise operational efficiency. High thermal resistance for the high operational temperatures and resistance to chemical attack and mechanical stresses are necessary in any insulation solution.

Promat HPI supply a range of products that ensure lower energy costs, reduced maintenance, and extended performance life. For the lowest thermal conductivity we offer MICROTHERM® and PROMALIGHT® microporous insulation products. Other products include PROMACAST® and PROMACRETE® light and medium weight insulating castables, and PROMATON® insulating firebricks. ALSITHERM® and PROMAGLAF® are low thermal mass modular fibre systems, and PROMASIL® is a high performance low density calcium silicate with the addition of opacification for enhanced thermal conductivity.

MICROTHERM® and PROMALIGHT® microporous ranges offer enhancement in insulation efficiency in the lining when combined with a hot facing material to effectively reduce heat loss and shell temperature.