The difference between heavy oil and light oil

1.Fuel Handling System: From "Ready-to-Use" to "Refined"

Heavy oil: solidifies like asphalt at room temperature. A complex heating and insulation system (oil storage tank heating, oil pipeline tracing, secondary heating before the burner) must be equipped to achieve a temperature that can pump and atomize (about 110-130 ℃).
Light oil: low viscosity, can flow at room temperature. The processing system is mainly a conveying and filtering system, which is simple and reliable.

2.Burner and combustion method: technological differences

Heavy oil burner: Usually steam atomization or compressed air atomization must be used. Accurate control and heating of oil and atomizing medium (steam) are required.
Light oil burner: relatively simple mechanical pressure atomization or air atomization can be used. Easy ignition and sensitive combustion regulation.

3.Boiler body and operation maintenance: different design logic

Heavy oil boilers: Due to their combustion characteristics, large water pipe structures such as SZS and SHS boilers are often used, resulting in larger furnaces.
Light oil boiler: usually using the same WNS quick installation design as gas boilers, with a compact structure and high degree of automation

Parameter

Model

Rated

Evaporating

Capacity

(t/h)

Rated

Working

Pressure

(MPa)

Saturated

Steam

Temperature

(℃)

Thermal

Efficiency

(%)

Natural gas

Consumption

(kg/h)

SZS20-1.25-Y

1.25

194

90-92

1240-1360

SZS35-1.6-Y

1.6

204

90-92

2170-2380

(*For reference only)

Economic advantages of fuel

1.Extremely low fuel cost: Heavy oil is a by-product of refining, and its unit calorific value price is much lower than that of light oil and natural gas.
2.Stable fuel source: The supply is guaranteed for refining enterprises or areas near ports.
3.High calorific value: high volumetric energy density

Mainly used in industries

Large scale heavy industry self owned power plants/thermal power plants	Utilize cheap heavy oil or residue produced by oneself to achieve energy self use
As a backup or supplementary energy source	In a very small number of factories that are extremely sensitive to fuel costs and already have heavy oil infrastructure.