Temperature Required for Pyrolysis Oil Refining

Temperature Required for Pyrolysis Oil Refining

The temperature for pyrolysis oil refining varies depending on the process type, raw materials, and target products, and can be categorized as follows:

1. General Thermal Pyrolysis Temperature

Conventional thermal cracking: 450–500°C (840–930°F), mainly used for viscosity reduction and lightening of heavy oil.

Deep pyrolysis (e.g., for olefin production in petrochemicals): 700–900°C, and can even exceed 1000°C, aiming to produce short-chain gaseous hydrocarbons.

2. Temperature for Batch-Type Oil Refining (waste tire/plastic oil refining)

Core reaction temperature: 330–400°C, during which the raw materials begin to crack and produce oil in large quantities.

Late-stage deep pyrolysis: Can be increased to 450–500°C to improve oil yield and process residues.

3. Temperature Reference for Other Processes

Delayed coking: Approximately 500°C, used to convert residual oil into light oil and coke.

Catalytic cracking (waste oil regeneration): 325–400°C, reducing reaction temperature and improving efficiency with the help of catalysts.