Processes

Pyrolysis

Recycling process in the context of polymer recycling

A more extensive way of obtaining virgin grade monomers for circular polymer production is chemical recycling through the combination Pyrolysis and Refinery.

The advantage of pyrolysis is that a wide range of rather unspecific waste mixtures can be converted. Additionally, it is the appropriate chemical recycling route for most polyolefines with uniform non-polar covalent bonds. The resulting products need to be upgraded, refined and reformed to close the cycle back to the virgin monomer.

Your material

  • Carbohydrates from plastic waste

Our Solution

  • Continuous (catalyzed) Pyrolysis within LIST KneaderReactor without using solvents and Recovery of naphtha, diesel, aromatics or other hydrocarbons from high-viscous pyrolysis pitches

  • Compensation of low heat conductivity of polymers through large internal surface and intensive mixing

  • Eliminating the necessity for solvents by using Kneader intrinsic robust high-viscosity design which, in contrast, additionally introduces heat through dissipation.

  • Dosing and heating of the polymer and stoichiometric mixing of the catalysts

  • High separation efficiency and controlled residence time due to optimal interfacial renewal and plug-flow behavior

  • Fouling-free reactor design and trouble-free discharge of the residue

  • Evacuation of vapor products without product entrainment

  • Extensive testing facilities in our test centers in Switzerland and Korea, for targeted process development

  • Industrialization experience for scales up to 10 t/h polymer

Interested in our Knet Reactor-based solution?

Pyrolyzer

1
  • interconnected gas headspace, large vapour cross sections
2
  • Geschlossene, sichere Bauweise
  • Große Heizfläche
  • Optional mit Vakuumfunktion
  • Robuste Allphasen-Bauweise
3
  • viscous or solid discharge

Learn more about polymer recycling

More about us

LIST KneaderReactor

Where viscosity cannot be a limitation. LIST kneader reactors operate in the concentrated phase—self-cleaning, vacuum-compatible, and capable of handling the highest energy inputs. From lab-scale kneaders to large-scale industrial plants, for the chemical, fiber, polymer, and recycling industries.

Service

LIST services ensure maximum plant availability through maintenance, modernization, and technical support throughout the entire lifecycle.

About Us

The BUSSLIST Group combines three process technologies that cover the most demanding stages of material processing—from high-viscosity reactions and temperature-sensitive compounding to precise solidification.