Furnace Oil is a dark viscous residual fuel obtained from crude distillation. Bunker Oil and Fuel Oil are the other names for Furnace Oil. Viscosity is the most important characteristic in Furnace Oil specification. It influences the degree of pre-heat required for handling, storage and atomization. 180 cSt grade is Bunker Fuel with maximum viscosity of 180 Centistokes (Thinner). 380 cst grade is Bunker Fuel with maximum viscosity of 380 Centistokes (Thicker).

It is used primarily for steam boilers in power plants, aboard ships, and in industrial plants for boilers and furnaces. Commercial fuel oils usually are blended with other petroleum fractions to produce the desired viscosity and flash point.

Below listed are the uses of Furnace oil:

  • It is much used as a backup fuel for peaking power plants.
  • Furnace oil is used to heat fuel tanks.
  • It is utilized to produce steam for industrial uses.
  • It is an integral part of generating electric energy.
  • It is used to light up furnaces.
  • It is used as fuel for Power Generation in DG Sets.
  • Furnace oil is used as fuel for bunkering.
  • Furnace oil is also used as a feedstock in fertilizer plants.
  • It can power many types of engines, lamps, heaters, stoves, and lanterns.

Benefits of Furnace Oil:

  • Furnace oil is light fuel oil. It is Sulphur-free, clean, and stands solid in the most demanding conditions.
  • Furnace oil is easy to handle, regulate and control.
  • It can be stored easily.
  • It is very cheap in price. Furnace oil is the most affordable liquid fuel available.
  • It requires less maintenance.
  • Furnace oil has proven to perform great in extreme cold.
  • It is a pretty much stable, combustible, non-explosive product.
  • The fuel oil is much safer, more efficient, and gives more warmth than natural gas.
  • It gives you a longer furnace and boiler life, so you face less depreciation.
  • Apart from that, furnace oil is also more common and cost-effective to use.

Specification For Furnace Oil:

Sl No Parameter Specification Std.method Typical Analysis
1 Density @ 15°C g/ml 0.9900 Max ASTM D 1298 0.9800
2 Flash Point (PMC),°C 66 Min. ASTM D 93 / IP 34 70
3 Pour Point °C +18 Max. ASTM D 97 / IP 15 -9
4 Gross Calorific Value 10500 Kcal/Kg - -
5 Ash (% by Mass.) 0.15 Max ASTM D 482 / IP 4 0.04
6 Water content (% by Mass). 1 Max. ASTM D 95 / IP74 <0.05
7 Sulphur, Total (% by Mass) 3.5 Max ASTM D 4294 3.20
8 Sediment (% by Mass) 0.25 Max. ASTM D 473 / IP 53 0.04
9 Vanadium (ppm) 250 UOP 391 / 91 170
10 Sodium, ppm) 50 UOP 391 / 91 20
11 Viscosity, Kinematic 50°C, cSt 380 Max. ASTM D 445 / IP 71 370
12 Potential Sediment(% by ageing) - - 0.5