Why a Dewaxing Tank is Needed for Waste Plastic Oil Refining

Why a Dewaxing Tank is Needed for Waste Plastic Oil Refining

The addition of a dewaxing tank in waste plastic oil refining is mainly to solve the problem of wax in the "crude oil" produced by the pyrolysis of waste plastics. It not only ensures the oil quality and safety in use but also enhances economic benefits, which is a key link to improve the added value of waste plastic oil refining. The specific reasons are as follows:

1.Remove wax to improve oil fluidity and low-temperature performance: The crude oil produced by the pyrolysis of waste plastics contains a large amount of wax (mainly long-chain alkanes). This type of wax has a high melting point and poor solubility. When the temperature is lower than 30℃, it is easy to crystallize and precipitate, resulting in turbid and solidified oil, which cannot be normally transported and used. It especially affects the use effect in winter or low-temperature environments and may even block equipment pipelines. The dewaxing tank can effectively remove wax through processes such as freezing crystallization and filtration separation, allowing the oil to maintain good fluidity even in low-temperature environments and adapt to different application scenarios.

2. Improve oil purity and reduce the impact of impurities: Wax is an ineffective impurity in oil. It not only affects the appearance of the oil (turbid color) but also reduces the combustion efficiency of the oil. During combustion, it is prone to produce carbon deposits and black smoke, increasing equipment wear and maintenance costs, and may also cause the oil to have a pungent odor. The dewaxing tank can simultaneously filter some fine impurities, making the oil clearer and purer, reducing adverse phenomena during combustion, and extending the service life of subsequent equipment.

3. Increase oil added value and expand application scenarios: The undewaxed crude waste plastic oil can only be used as low-price heating oil with limited profit space. After dewaxing treatment, the oil quality is greatly improved, and it can be further refined into high-quality fuel fractions such as diesel and gasoline, even meeting strict emission standards such as Euro 6. It can be applied to a wider range of scenarios such as vehicles and industrial boilers, greatly increasing product prices and profit space.

4. Recycle wax to realize secondary utilization of resources: The wax separated by the dewaxing tank is not a waste. It can be further processed into special wax products such as rubber protective wax and phase change energy storage wax, which are widely used in tire manufacturing, cold chain transportation, beauty and physical therapy and other fields. It forms a dual profit closed loop of "waste plastic → oil + wax", improving resource utilization and overall project benefits.

In short, the dewaxing tank is an essential equipment for waste plastic oil refining to convert from "crude oil" to "high-quality products". It can not only solve the pain points in oil use but also maximize the economic value of waste plastic resource utilization, especially suitable for waste plastic oil refining projects pursuing large-scale and high-quality production.