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YLL Series Coal/Biomass Fuel Thermal Oil Boiler

  • Rated power  700-3500kw
  • Working pressure  1.1Mpa
  • Fuel  coal, biomass, wood chips, rice hull, peanut shell, etc
  • Application fields Chemical, Plastic, Textile and Food industry, etc
  • Certification  SGS , BV, CCC, ISO

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Coal or biomass fuel thermal oil boiler is a new type of heating equipment, with coal, oil, gas, biomass as fuel and flue gas as heat source, heat conduction oil (such as L - QB, L - QC, L - QD, etc.) as the heat carrier, through the circulating pump to force heat transfer medium to circulate in liquid phrase , and transfer heat to heat user equipment, then return to the heating furnace for re heating high temperature, low pressure, energy-saving equipment. Heating temperature can be as high as 340 ℃, and generally under working pressure of 1.1MPa, because of working in liquid state, safe and reliable.

Application Scopes

Owing to its characteristics of high heating temperature , low working pressure ,energy saving, thermal oil boiler can be widely used in a variety of industrial heating process. Instead of electricity, steam heating, and it can improve the productivity.
1. Paper industry: dry, corrugated paper processing, calender, glue roller.
2. Wood industry: plywood, density board, hot pressing molding, wood drying, steaming equipment.
3. Building materials industry: plasterboard drying, asphalt heating, emulsified asphalt, asphalt concrete, concrete component maintenance, drying equipment, linoleum production line.
4. Machinery industry: spray drying of printing, assembly processing, dry cleaning.
5. Food industry: baking bread and baking cookies, cooking pot, autoclave, conveyor dryer.


1. Strong adaptability of different fuels
    Separated design for combustion equipment and upper furnace, according to the different nature of the solid fuel, furnace can be design individually .
2. Highly degree of grate automation
    The structural grate is full automatic chain grate .
3. Large diameter combustion chamber
    Boiler combustion chamber is composed of vertical large diameter circular tube, large fuel combustion space, complete combustion, high thermal efficiency.
4. Best coil design
    Furnace internal and external spiral coil is made of bulls, small diameter steel pipe coil thermal expansion of good performance, low stress, safe and reliable.
5. The optimal process design
    Three return flue gas, medium flows through the inside and outside coils, with uniform velocity, safe and stable operation
6. Sufficient output
    Reasonable heating surface layout, large area, good heat transfer effect, high efficiency, stable output, sufficient.
7. Perfect automatic control measures
    Precision control on outlet oil temperature, multiple protection and control are set on medium temperature, pressure and smoke temperature to ensure safe and
    reliable operation.
8. Leading technology in automatic control
    Boiler controller adopts Siemens/delixi electric components, reliable in performance. Controller has three forms: normal, LCD display in both Chinese and English
    menu, touch screen man-machine dialogue remote control.


Model Rated power(kw) Thermal efficiency(%) Design pressure (Mpa) Working pressure(Mpa) Highest working temperature (℃) L(mm) W(mm) H(mm)
YLL-700MA 700 75 1.1 0.8 <350 4830 2500 5500
YLL-1000MA 1000 75 1.1 0.8 <350 4830 2500 5500
YLL-1200MA 1200 75 1.1 0.8 <350 5300 2620 5700
YLL-1400MA 1400 75 1.1 0.8 <350 5650 2650 6000
YLL-1800MA 1800 75 1.1 0.8 <350 5650 2700 6400
YLL-2400MA 2400 75 1.1 0.8 <350 6000 2700 6400
YLL-3000MA 3000 75 1.1 0.8 <350 6000 2800 6500
YLL-3500MA 3500 75 1.1 0.8 <350 6200 2800 6500
Transaction Process
Customer Inquiry -- Offer Professional Consulting Service -- Place Order -- Customize Boiler Based on Customers’ needs --Production-manufacturing -- Payment -- Impeccable After Sale Service (installation and debugging, periodic maintenance, etc.)

Offered Technical Documentations
Installment and Operation Instruction
Quality Certificate
Inspection Certificate of Boiler quality
General Drawing of Boiler
Foundation Drawing
Boiler Body Drawing
Boiler Room Design Drawing
Drawing of Valves, Instruments and Accessories

Company Strength
Sitong boiler is a national approved and designated enterprise, with design and manufacture license permits of Class A boiler and D1, D2 pressure vessel. The company has passed ISO 9001 international quality system certification, and gained the international certificates of CE, SGS, and BV, etc. The boiler products are exported to more than 60 countries. The factory covers an area of 120 thousands㎡, equipped with plenty of international advanced manufacture equipment, such as CNC cutting machine, automatic submerged arc welding machine, X-ray detection machine, etc.
company strength of Sitong Boiler


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