Antifreeze Recycling

Sequoia’s Technology for Antifreeze Recycling

Sequoia offers advanced coolant (antifreeze) recycling systems based on vacuum distillation technology. Our process separates waste coolant into distilled water and >95% pure glycols (ethylene or propylene glycol), suitable for reuse in industrial and automotive applications. A small residue (typically 3–10%) is collected, containing trace oil, spent additives, and sludge from the original antifreeze.

Modular Plant Design
Sequoia manufactures fully modular distillation units . Each module includes:

  • Process equipment
  • Steel support structures
  • Interconnecting piping
  • Instruments
  • A state-of-the-art control system for safe and efficient operation

The plant is designed to be operated by just one operator and can run 24/7, typically for 8000 hours per year. It also can be quickly started up and shut down, making it suitable for operating just one shift per day if desired.

Throughput & Space Requirements

  • Capacity: 30–1200 gallons/hour (115–4500 liters/hour)
  • Footprint: 1500 ft2 (140 m2), including boiler, cooling tower, and control room
  • Tanks: Supplied separately based on customer needs
AntiFreeze

Construction Features

Sequoia’s antifreeze recycling plants are designed for durability, efficiency, and compliance with international standards.

  • Modular design: 8’ × 10’ × 26’ H units for flexible installation
  • Low installation costs with options for indoor or outdoor setup
  • Stainless steel wetted parts for long service life and corrosion resistance
  • Built to meet industry codes: ASME (vessels, piping), API (safety valves), and ANSI (pumps)

Operation & Maintenance Benefits

Our systems are engineered for safe, automated, and cost-effective operation.

  • Lower water disposal costs through efficient separation from oil and glycol.
  • Automated controls reduce operator error and simplify plant management.
  • No chemicals added during the process
  • Recovered products can be sold in premium markets
  • Flexible operation: run continuously for 330+ days per year or shutdown daily as needed
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