YQL series gas-fired horizontal thermal fluid heater

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  YQL series gas and oil-fired thermal fluid heater adopts 3-trips round coil tube structure. The coil tube end adopts beam port to effectively protect the furnace all at boiler end, is equipped with advanced combustion device, and with fully automatic operation. After furl ignition from burner, it forms a flame full fill into the round furnace tube, and through the furnace tube wall, the heat is transferred by radiation, which is the first pass. The high temperature flue gas after combustion gathers at rear furnace door and then turns into the second trip, which is convection tube area. After convection heat exchange, the flue gas temperature is going lower and comes to front furnace door, and from here it turns into the third trip ether into the tube bundle area, then through economizer its emitted into atmosphere through chimney.

  This type of heater is delivered in one whole body, and after erection at site, it only needs to connect thermal gas(oil) piping and electricity to start operation. The heater has 4 heating areas: furnace radiation heating area, the first convection tube heating area, the second convection tube heating area and economizer (waste heat boiler)

  • Parameter
  • Characteristics
  • System flow chart
  • Related Case
Model Rated thermal power(KW) Rated thermal power(x10 4kcal/h) Design working temperature(≤℃) Rated working pressure(MPa) Thermal efficiency(≥%) System installation power(KW)
YQL-7000Q 7000 600 320 0.8 90 140
YQL-8200Q 8200 700 320 0.8 90 140
YQL-9400Q 9400 800 320 1 90 200
YQL-10500Q 10500 900 320 1 90 200
YQL-12000Q 12000 1000 320 1 90 240
YQL-14000Q 14000 1200 320 1 90 320
YQL-16500Q 16500 1400 320 1 90 380
YQL-18000Q 18000 1600 320 1 90 450
YQL-21000Q 21000 1800 320 1 90 520
YQL-23300Q 23300 2000 320 1 90 600
YQL-26000Q 26000 2200 320 1 90 700
YQL-29200Q 29200 2500 320 1 90 825


Digitized manufacture
  • The laying-off of steel tube adopts CNC 3D laser cutting machine.
  • The manufacture of square coil pipe in pipe bender to pre-bend and then butt joint. No forced shaping.
  • Digitized manufacture


    full argon arc welding
    Square coil pipe and coil pipe all adopt argon arc welding technique and the weld line will be done 100% radiographic inspection.full argon arc welding


    Easy operation
  • Heater is wholly assembled and delivery, it is easy for installation, commission and operating.
  • Fully automatic operating, burning, high slot oil level, output temperature and flow rate are adjusted automatically and self-protected.
  • Easy operation


    Less fuel consumption
  • External side adopts good insulation material, outside use stainless steel plate, which can mostly reduce heat lost, make working environment better.
  • Multilayers solid matter tube bundle and steel rod is used to seal and fix completely eradicate flue gas short circuit.
  • Before delivery, the residue moisture is removed completely, so the system draining period is reduced to 2 days from 12 days.
  • Less fuel consumption


    Safely operation
  • inner coil pipe has bigger flow amount, so it is more stable under high temperature operation.
  • Conical coil, effectively protects the furnace wall at the end of heater and burner on top.
  • Safely operation




    YQL series gas-fired horizontal thermal fluid heater-System flow chart

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