Gasification Vs Pyrolysis

Gasification and pyrolysis are both thermal routes for shredder residue, but they are not interchangeable. The difference comes down to temperature, oxygen and what you want back from the process — and that difference decides which one fits a given project.

Pyrolysis heats the material in the near-absence of oxygen at moderate temperature, producing oil, gas and char. Gasification adds a controlled amount of oxidant at higher temperature, driving the conversion further toward a synthesis gas and leaving an inorganic ash that can be melted into a glassy slag.

What Each Route Recovers

The practical split is in the outputs. A pyrolysis-first approach keeps more of the carbon in the char and oil, which then need further upgrading. A gasification-and-melting approach converts the organic fraction to syngas for power and melts the mineral fraction into a stable, inert slag, with metals recovered along the way.

For a heterogeneous feed like automotive shredder residue — energetic polymers mixed with glass, minerals and trapped metals — the integrated gasification route separates the material cleanly in one platform, which is why Klean’s reference plant combines fluidized-bed gasification with ash melting.

The Decision Is an Output Decision

There is no universally better process, only the process that matches the operator’s product strategy. Once the desired outputs are defined — power, metals, aggregate — the right thermal route follows directly.

Learn More About Choosing Your Process

• Automotive Shredder Residue Gasification Plant
• Solid Waste Recycling
• What Is Gasification?
• Feasibility Studies

Partner With The KleanTeam to Choose the Right Route

Safe. Clean. Profitable. One Proven Partner.

Klean Industries helps operators match their shredder-residue stream to the process that recovers the most value — with a commercial reference plant demonstrating the gasification-and-melting path at scale.

Klean’s Key Advantages:

• ✅ An operating ASR gasification reference plant treating up to 20 t/h of shredder residue.
• ✅ Thirty-plus years engineering commercial gasification and waste-to-energy plants.
• ✅ 3 recovered carbon black (rCB) plants built in India over the past 2 years.
• ✅ KleanLoop blockchain provides end-to-end feedstock traceability.

Ready to match the process to your residue?

Speak with a Solid Waste Expert at Klean Industries » GO.