Surface flash cracking for high-quality wax production with inductive heating

Overview

This innovative process leverages surface flash cracking technology coupled with inductive heating to transform HDPE into high-purity waxes and lighter oils. By preheating HDPE to 400°C and spraying it as fine droplets onto a superheated cone, the process ensures efficient vaporization and minimal secondary cracking. The resulting vapors are passed through a high-temperature filter and a multi-stage condenser, achieving wax yields of 60-80% with minimal contaminants, ensuring high market value.

Technical specifications

• Preheating: HDPE is heated to ~400°C using an extruder.
• Spraying: Droplets are formed using inert gas (e.g., Nitrogen) and processed on a superheated cone (470–550°C).
• Vaporization: Flash cracking occurs, forming vapor-phase hydrocarbons.
• Filtration and Condensation: Vapors are filtered and condensed to separate heavy waxes (C20–C50) and oils.
• Residue Management: Fillers and solid residues are continuously scraped away.
• Recycling and Safety: Residual gases are recycled or treated.
• Purity: High-purity waxes with minimal fine solids or oil.

Technology readiness level

Currently at TRL 3, this technology has been validated in a lab setting, demonstrating feasibility and industrial potential. Ongoing efforts focus on optimizing wax recovery and scaling up the process for commercial application, with a strong emphasis on environmental impact and system integrity.