E-mail sinonshseo@gmail.com
Time：2025-03-25 13:45:27 Reading volume：
Heavy Fuel Oil Purifier is a purification equipment specially used for processing high-viscosity and high-pollution heavy fuel oil (such as marine fuel HFO, residual oil, asphalt oil, etc.). Through multi-stage filtration, separation and heating treatment, it removes impurities such as water, solid particles, colloids and sulfides in the fuel to ensure that the fuel meets the use requirements of combustion equipment (such as ship engines, industrial boilers, etc.).
- High viscosity: poor fluidity at room temperature, and requires heating (usually to 90~150℃) to be effectively purified.
- High pollution: contains a large amount of sulfur, asphaltene, metal particles and seawater (common in ship fuel).
- Easy to emulsify: water and fuel are easy to form a stable emulsion, which is difficult to separate.
- Corrosive: sulfides and acidic substances will corrode the fuel system.
| Functional modules | Function | Technical implementation |
|-------------------|-------------------------------------------------------------------------|-----------------------------------------------------------------------------|
| Preheating system | Reduce fuel oil viscosity and improve fluidity | Electric heater/steam heater, temperature control accuracy ±5℃ |
| Coarse filter | Intercept large particles (>50μm) | Self-cleaning scraper filter or metal mesh filter |
| Fine separation | Remove tiny particles (<10μm) and free water | Centrifuge or coalescer |
| Dehydration and desulfurization | Separate emulsified water, dissolved water and some sulfides | Vacuum dehydration tower or chemical additive injection system |
| Viscosity adjustment | Dynamically adjust fuel oil viscosity to meet combustion requirements | Online viscometer + heater closed loop control |
1. Pretreatment: The fuel oil is heated to 80~120℃ to reduce viscosity.
2. Primary filtration: Remove large particles of impurities (such as rust and carbide) through a self-cleaning filter.
3. Deep purification:
- Centrifugal separation: High-speed rotation separates water and tiny particles (up to 0.1% water content).
- Coalescing filtration: Make tiny water droplets gather into large droplets and then separate.
4. Post-treatment: Add neutralizers (such as Ca(OH)₂) to reduce the risk of sulfur corrosion.
- Centrifugal purifiers (such as Alfa Laval S series): Suitable for high-moisture and high-impurity fuels, with a separation efficiency of ＞95%.
- Vacuum dehydration system: Remove dissolved water through negative pressure evaporation, which can reduce the moisture content to below 0.05%.
- Electrostatic oil purifier: Use electric field force to adsorb colloid and carbon particles, suitable for ultra-low sulfur fuel oil (ULSFO).
- Shipping industry: Processing of marine fuels such as IFO 180/380 to protect engine high-pressure fuel pumps and injectors.
- Power plants: Purify heavy oil to reduce boiler carbon deposition and exhaust pollution.
- Refineries: Pretreatment of residual oil (Bunker C) to improve subsequent processing efficiency.
- Flow matching: ｓｅｌｅｃｔ the processing capacity according to fuel consumption (such as 10m³/h~100m³/h).
- High-temperature resistant design: Sealing materials and filter elements must withstand temperatures above 150℃.
- Automation level: PLC-controlled equipment is preferred, which can monitor viscosity, moisture and pressure differences in real-time.
- Frequent clogging of filter elements → Check whether the preheating temperature is insufficient or the impurities in the fuel exceed the standard.
- Poor dehydration effect → It may be due to severe emulsification, and demulsifiers need to be added or the centrifuge speed needs to be upgraded.
- Corrosion increases → Sulfur content needs to be detected and a desulfurization module needs to be installed.
Heavy fuel oil purifier is the key to ensuring the stable operation of highly polluting fuel equipment. Solutions need to be customized according to fuel characteristics (such as ISO 8217 standards) and operating conditions.
