Pyrolysis oil from plastic waste

ORLEN Unipetrol Tests Pyrolysis Oil from Plastic Waste in Petrochemical Production

ORLEN Unipetrol has started operational testing of pyrolysis oil made from recycled plastic waste at its chemical plant in Litvínov, Czech Republic. The test marks an important step for the Central European petrochemical industry, as producers look for practical ways to reduce reliance on fossil feedstocks while keeping existing industrial assets in use.

The company is incorporating ISCC Plus-certified pyrolysis feedstock into its steam cracker, a core petrochemical unit used to produce basic building blocks for plastics and other chemical products. The aim is not simply to demonstrate that plastic waste can be converted into oil-like material. The more important question is whether that material can be safely and consistently processed in large-scale production without compromising efficiency, plant reliability or final product quality.

Why this test matters

Plastic waste remains one of the most difficult environmental and industrial challenges. Mechanical recycling works well for clean, sorted and relatively simple waste streams, but many plastic materials are mixed, contaminated, multilayered or degraded after use. These materials often cannot be recycled into new high-quality plastics through conventional methods.

Chemical recycling is being developed to address this gap. Through pyrolysis, selected plastic waste is heated in the absence of oxygen and converted into a liquid hydrocarbon feedstock known as pyrolysis oil. This oil can then be further processed and used as an alternative input in petrochemical production.

For ORLEN Unipetrol, the Litvínov test is a practical move from laboratory research and analytical work into industrial operation. It allows the company to collect real production data, evaluate technical limits and better understand how recycled feedstocks behave inside existing infrastructure.

From waste plastics to circular polymers

The key value of pyrolysis oil lies in its potential to enter the petrochemical value chain at an early stage. In a steam cracker, feedstocks are broken down into basic molecules such as ethylene and propylene. These molecules are then used to manufacture polymers including polyethylene and polypropylene, which are essential materials for packaging, automotive parts, construction products, consumer goods and industrial applications.

When pyrolysis oil from plastic waste is processed under a certified mass balance system, the resulting products can be classified as circular, provided the rules of the certification scheme are followed. This gives polymer customers a route to reduce the fossil-based share of their material sourcing while maintaining the technical performance of conventional plastics.

That point is critical. Many industrial users cannot easily switch to lower-performance materials. Food packaging, medical applications, automotive components and technical products often require strict specifications. Chemical recycling offers a pathway in which recycled carbon can be reintroduced into the system while producing materials that are designed to match virgin-quality plastics.

The role of ISCC Plus certification

ORLEN Unipetrol’s test uses ISCC Plus-certified pyrolysis oil. This matters because circular claims in petrochemicals depend heavily on traceability. In a steam cracker, recycled and fossil-based feedstocks are typically processed together. The certified recycled share must therefore be tracked through a mass balance approach.

Mass balance does not mean that every molecule in a final product can be physically separated and identified as recycled. Instead, it provides a controlled accounting system that verifies how much certified circular feedstock entered the production process and how much certified output can be attributed to it.

For customers, this creates a transparent way to purchase circular materials. For producers, it creates a framework for integrating recycled feedstocks into complex industrial systems without needing to build entirely separate production lines.

However, transparency is essential. The credibility of chemical recycling depends on clear communication, robust certification, realistic claims and verifiable data. If companies overstate the environmental benefit or fail to explain how mass balance works, circular plastics risk being perceived as another form of greenwashing.

A technical challenge, not just a sustainability story

Processing pyrolysis oil is not as simple as replacing one feedstock with another. Pyrolysis oil can contain impurities such as chlorine, nitrogen, oxygenates, metals or silicon compounds, depending on the plastic waste stream and the recycling process used. These contaminants can affect catalyst performance, corrosion risk, emissions, product quality and steam-cracker reliability.

That is why industrial testing is so important. A successful campaign must prove that pyrolysis-derived material can be introduced safely, that the plant can manage quality variability, and that the resulting petrochemical products meet market requirements.

Across the chemical industry, companies are investing in purification, upgrading, catalysts and adsorbent technologies to make pyrolysis oil more compatible with large petrochemical facilities. This is becoming one of the central bottlenecks for scaling chemical recycling: the industry does not only need more recycled feedstock; it needs feedstock of consistent and cracker-compatible quality.

Why Litvínov is strategically important

The Litvínov chemical site is one of ORLEN Unipetrol’s major industrial assets and part of the largest refining and petrochemical group in the Czech Republic. Testing circular feedstocks directly at such a site is significant because it reflects the direction of travel for European petrochemicals.

Rather than treating chemical recycling as a separate niche activity, companies are increasingly trying to integrate alternative feedstocks into established production systems. This can reduce the need for entirely new infrastructure and may accelerate the transition toward circular carbon use.

For Central Europe, the test also has a supply-chain dimension. Plastic waste is locally available, while fossil feedstocks are exposed to geopolitical risk, international price volatility and long-distance supply dependencies. Turning difficult-to-recycle plastic waste into industrial feedstock could therefore support both sustainability goals and material security.

What this means for the circular economy

ORLEN Unipetrol’s test should be seen as part of a broader transition rather than a final solution. Chemical recycling will not replace mechanical recycling, waste reduction, reuse systems or better product design. The most sustainable plastic is often the plastic that is avoided in the first place.

Still, for waste streams that cannot be mechanically recycled, pyrolysis can provide another option. If properly regulated, transparently certified and powered with attention to emissions and energy use, it can help keep carbon in the material economy rather than sending plastic waste to landfill or incineration.

The most promising model is a complementary one: reduce unnecessary plastic use, improve collection and sorting, maximize mechanical recycling where possible, and use chemical recycling for complex residual streams that would otherwise be lost.

The business signal for polymer customers

For companies that buy polymers, the ORLEN Unipetrol test sends a practical signal. Circular feedstocks are moving from research projects toward industrial campaigns. That does not mean supply will immediately become abundant or cheap, but it does show that petrochemical producers are preparing for a market in which recycled carbon content, certification and traceability become purchasing criteria.

Brand owners, packaging producers and manufacturers are under growing pressure to reduce the environmental impact of plastics. Certified circular polymers may help them meet internal sustainability targets, respond to regulation and reduce dependence on virgin fossil resources.

The challenge will be to communicate these benefits accurately. Customers and consumers need to understand whether a product contains physically recycled material, mass balance-attributed circular content, mechanically recycled content or a combination of approaches.

A cautious but important step forward

The Litvínov test is not a magic answer to plastic waste. Pyrolysis remains technically complex, and its environmental performance depends on feedstock quality, process efficiency, energy use, emissions control and the final use of the recycled output.

But the test is important because it addresses the real industrial question: can circular feedstocks be integrated into existing petrochemical production at scale, with reliable quality and certified traceability?

ORLEN Unipetrol’s campaign suggests that the answer may increasingly be yes, provided the industry keeps moving beyond pilot claims and toward transparent, data-backed implementation. For the European plastics value chain, that is a meaningful development. It shows that circularity is no longer only a design concept or a recycling target. It is becoming an operational challenge inside the steam cracker itself.

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