How does tire oil decolorize?

Writer： Kaiqian Oil Purifier Release time：2024-01-30 15:27 Clicks：

The decolorization of tire oil refers to the process of changing it from its original black or dark color to colorless or light color. The following are several common tire oil decolorization processes:

Active soil decolorization method: Active soil is a substance with strong adsorption performance, which can adsorb impurities and pigments in tire oil, so as to achieve the purpose of decolorization. In the process, the active soil is usually mixed with tire oil, and after the active soil has adsorbed the pigment, the active soil and impurities are separated by filtration or centrifugal separation to obtain the decolorized tire oil.

Acid-base refining method: The process is mainly decolorized by pickling and alkali refining. First, the tire oil is added to the acid for pickling, which can remove impurities and pigments in the tire oil. Then, the pickling tire oil is alkali refined, and the acidic substances remaining in the pickling are neutralized by adding an appropriate amount of alkali, and the pigments and impurities are further removed.

Oxidative decolorization method: Oxidative decolorization method uses oxidants to decompose the pigments in tire oil, so as to achieve the purpose of decolorization. Commonly used oxidants include hydrogen peroxide, potassium permanganate, etc. In the process, the oxidizer is added to the tire oil, and after the appropriate temperature and time, the pigment oxidation decomposition reaction occurs, and finally the decolorized tire oil is obtained.

Activated carbon adsorption method: Activated carbon is a material with high adsorption capacity, which can absorb impurities and pigments in tire oil, so as to achieve the purpose of decolorization. In the process, activated carbon is in contact with tire oil to remove pigments and impurities through adsorption. Usually, the method of centrifugal separation or filtration is used to separate the activated carbon and the adsorbed impurities to obtain the decolorized tire oil.

It should be noted that the selection of different processes and specific operating parameters (such as temperature, time, material ratio, etc.) will have an impact on the decolorization effect. Therefore, in practical applications, it is necessary to choose a suitable decolorization process according to the characteristics and requirements of tire oil, and carry out reasonable regulation. In addition, in order to avoid pollution to the environment, the wastewater and waste residue after decolorization should be treated in accordance with relevant regulations.