On June 12, 2026, Mingjie Group completed the shipment of the MJZ-20 Plastic Pyrolysis Oil Distillation Plant for Sale to Vietnam. This customer had previously purchased Mingjie pyrolysis equipment and successfully converted waste plastics into crude pyrolysis oil. The distillation plant is a core refining device at the back end of pyrolysis plastic to fule oil production line. It uses negative pressure vacuum fractionation technology to deeply purify low-quality crude plastic pyrolysis oil.
Untreated crude pyrolysis oil from plastics generally suffers from various problems, such as cloudy color, high impurities, high viscosity, low flash point, and strong odor. Crude pyrolysis oil can only be sold at a low price as low-end heavy oil. Its market value is low, its application scenarios are limited, and its transportation is restricted.
Plastic pyrolysis oil distillation plant can separate light diesel oil, gasoline components, and a small amount of heavy oil residue. This enables the upgrading, standardization, and commercialization of crude oil. Crude oil distillation plant is an essential piece of equipment for current waste plastic recycling projects. It can increase the output value of plastic pyrolysis oil, raise profits, and connect with high-end markets.
Structure of a Plastic Pyrolysis Oil Distillation Plant
A plastic pyrolysis oil distillation plant mainly comprises the following core systems.
Crude Oil Pretreatment Filtration System: The filtration device intercepts carbon black, solid impurities, and gum deposits in the crude oil. It prevents impurities from entering the distillation tower and causing coking and blockage.
Vacuum Distillation Reaction System: Composed of a distillation kettle, heating system, and vacuum unit. It stably maintains a negative pressure, low-temperature distillation environment, ensuring uniform vaporization of the oil and stable separation of components.
Rectification and Fractionation Tower System: It achieves precise stratification of light and heavy oils, with high separation accuracy, effectively increasing the yield of light oils.
Circulating Condensation System: A high-flow-rate circulating cooling device rapidly cools and liquefies the oil vapor. It boasts high cooling efficiency and high oil vapor recovery rate, maximizing oil yield.
Decolorization, Deodorization, and Refining System: Through adsorption, filtration, and refining processes, it removes gums, sulfides, impurities, and odors from the oil. It results in a clear oil color and stable indicators.
Electrical Control and Safety System: PLC control allows for real-time adjustment of temperature, pressure, vacuum, and feed rate. Equipped with multiple safety interlock devices including overpressure, overtemperature, shutdown, and negative pressure protection, ensuring safe and stable operation.
How Distillation Equipment Purifies Pyrolysis Oil
Plastic pyrolysis oil distillation equipment employs a low-temperature negative pressure vacuum distillation process, distinct from traditional atmospheric pressure high-temperature distillation. The entire process is characterized by low oxygen, low temperature, and anti-coking, ensuring oil quality and production safety from a process perspective.
Negative pressure distillation avoids secondary cracking, coking, and carbonization of oil caused by high temperatures. This significantly reduces the risk of oxidative deterioration, while also reducing energy consumption and improving oil yield and stability.
Plastic pyrolysis oil distillation equipment is highly adaptable and widely compatible. It can process various types of plastic pyrolysis oil, tire pyrolysis oil, and crude oil from mixed solid waste pyrolysis. It also can process waste engine oil, waste transformer oil, and waste lubricating oil.
Waste oil distillation plant utilizes the boiling point differences of different hydrocarbon components to significantly lower the oil’s boiling point under vacuum negative pressure. This allows for precise stratification and separation of light oil, medium oil, and heavy residue in the crude plastic oil.
The crude oil undergoes a complete process including preheating, temperature rise, vaporization, fractionation, condensation, and decolorization to effectively remove impurities and odors. The final product is clear and transparent high-quality fuel oil. The remaining small amount of heavy oil residue can be recycled or used as a byproduct.
Summary
Adding plastic pyrolysis oil distillation equipment is a crucial step in improving the quality, efficiency, and upgrading pyrolysis projects. Through distillation and refining, pyrolysis oil can achieve a value upgrade from crude oil to refined oil, expanding the high-end industrial fuel market.
For solid waste circular economy projects, plastic pyrolysis oil distillation equipment truly realizes a complete closed-loop resource utilization of waste plastics—pyrolysis crude oil—high-end refined fuel. It is the core equipment driving the development of plastic solid waste treatment towards refinement, high-end, and high-value.
