Maximizing Monomer Yields: PyroCon™ for PS and PMMA Depolymerization
- jesusrangel3
- Jun 6
- 2 min read

Introduction
As the demand for high-quality recycled plastics grows, chemical recyclers are seeking innovative ways to boost monomer recovery from polystyrene (PS) and polymethyl methacrylate (PMMA). The key to maximizing yield and profitability lies in precise process control and advanced quenching technology. Sulzer’s PyroCon™ offers a breakthrough solution, enabling recyclers to achieve higher monomer yields and more sustainable operations.
The Challenge: Efficient Monomer Recovery in Chemical Recycling
Polystyrene and PMMA are widely used plastics, but their recycling via depolymerization presents unique challenges:
Rapid degradation: If not cooled quickly and precisely, valuable monomers degrade or recombine into unwanted byproducts.
Fouling risks: Traditional quenching systems often suffer from fouling, which disrupts separation and lowers yield.
Product purity: Inefficient cooling can lead to contamination with oligomers and other impurities.
The PyroCon™ Advantage in PS and PMMA Depolymerization
PyroCon™ is specifically engineered to address these challenges and deliver superior results:
1. Controlled, Rapid Quenching
PyroCon™ enables immediate and precise cooling of depolymerization gases, preventing further breakdown of monomers and preserving their value.
2. Effective Oligomer Separation
The system’s advanced cooling approach separates oligomers from monomer-rich gases, ensuring higher monomer purity and minimizing contamination.
3. Fouling Prevention
With its anti-fouling design, PyroCon™ ensures continuous operation and consistent product quality, even when processing challenging feedstocks.
Real-World Results: Higher Yields, Greater Profitability
Facilities using PyroCon™ for PS and PMMA depolymerization have reported:
Significantly higher monomer yields compared to traditional quenching systems
Consistent product quality with fewer impurities and byproducts
Reduced downtime and maintenance, thanks to fouling-resistant engineering
These benefits translate directly into improved profitability and a more sustainable recycling process.
Why Monomer Yield Matters
Maximizing monomer recovery is essential for:
Economic viability: Higher yields mean more valuable product from the same feedstock.
Sustainability: Efficient recycling reduces demand for virgin plastics and supports the circular economy.
Regulatory compliance: Producing high-purity monomers helps meet stringent industry and environmental standards.
Conclusion
Sulzer’s PyroCon™ is redefining what’s possible in chemical recycling of PS and PMMA. By delivering precise, rapid quenching and effective oligomer separation, PyroCon™ empowers recyclers to maximize monomer yields and profitability.
Ready to boost your monomer yields? Contact Sulzer Chemtech to learn how PyroCon™ can transform your PS and PMMA recycling process.




