What Types of Waste Oil Can Be Converted Into Diesel?

Writer： Kaiqian Oil Purifier Release time：2025-09-10 09:42 Clicks：

Waste oil is one of the most overlooked resources in the energy sector. Every year, millions of tons of used motor oil, hydraulic oil, and other industrial lubricants are discarded worldwide. Instead of being treated as waste, these oils can be effectively recycled through a waste oil to diesel plant, producing clean and usable diesel fuel. This process not only saves costs but also reduces environmental pollution.

Types of Waste Oil Suitable for Conversion

A modern waste oil distillation equipment can handle a wide variety of raw materials. The most common types include:

• Used Motor Oil – Generated from vehicles and machinery, it is one of the best raw materials for diesel production.

• Hydraulic Oil – Frequently replaced in heavy machinery and construction equipment, it can be efficiently refined into diesel.

• Transmission Oil and Gear Oil – High in hydrocarbons, making them suitable feedstocks.

• Industrial Lubricants – From factories and workshops, often mixed with impurities but can still be treated effectively.

• Waste Cooking Oil – Though not petroleum-based, it can also be processed with the right adjustments in the system.

Thanks to the advancement of distillation technology, even oils with high levels of contaminants can be recycled with a high recovery rate.

How the Waste Oil to Diesel Plant Works

The recycling process is based on distillation, where waste oil is heated until it vaporizes and then cooled into liquid diesel. The equipment is designed to control temperature and pressure precisely, usually between 300–450°C under low pressure, to ensure safe and efficient conversion.

Main Process Steps:

1. Preheating – Removes water and light volatile compounds.

2. Evaporation – Breaks down the oil into vapor fractions.

3. Separation – Different components are separated according to their boiling points in the distillation tower.

4. Condensation – The diesel fraction is cooled back into liquid form and collected.

On average, a waste oil recycling machine can recover 85–90% diesel from raw waste oil, making it a highly efficient solution for fuel production.

Advantages of Using Waste Oil Distillation Equipment

• Cost-effective – Refining one ton of waste oil costs less than 30 USD.

• Energy saving – Around 105 kcal of heat and 40 kWh of electricity are consumed per ton.

• Eco-friendly – No secondary pollution is generated during operation.

• High-quality output – The diesel produced has no unpleasant odor or discoloration.

• Easy operation – Fully automated system with low maintenance needs.

  
  

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Why Choose Our Waste Oil to Diesel Plant

Our equipment is designed with both efficiency and reliability in mind. We provide not only the machines but also complete service support:

• Overseas installation and training by experienced engineers.

• 12-month product tracking and lifetime technical support.

• Maintenance and spare parts supply when required.

• Special discounts for repeat customers and referrals.

• Business plan consulting for starting or expanding fuel recycling projects.

Conclusion

Whether it is used motor oil, hydraulic oil, or even waste cooking oil, all of these can be recycled into valuable diesel fuel with the right equipment. A waste oil to diesel plant turns waste into resources, helping industries cut fuel costs while protecting the environment.