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So far, pyrolysis and gasification are the only two chemical recycling pathways described to work for mixed plastic waste streams. There is a third way – cracking. A solid waste cracker operates at temperatures between a pyrolysis reactor and a gasifier and produces a product gas that is rich in C2 to C7 molecules, very similar to a Naphtha steam cracker furnace. It therefore enables a significantly shorter recycling loop than pyrolysis and gasification to produce the targeted circular monomers, avoiding additional reaction steps and the associated plastic-to-plastic yield losses. Operating at the “just right” temperature also ensures that unwanted heteroatoms present in the waste like O, N, S, and Cl end up predominantly in small molecules, that can be separated from the circular monomer streams using industry-proven gas-cleaning technologies. Our CEO Joerg Krueger will be speaking about this unique chemical recycling solution developed by SYNOVA and its partners at ERTC 2023 (https://lnkd.in/dwASgmH). Don’t miss it! #SynovaTech #temperature #cracking #pyrolysis #gasification #chemicalrecycling #circulareconomyforplastics #sustainability #technology #advancedrecycling #ERTC23 #ERTC #conference

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Better make sure the metalurgical choice can withstand all the chlorides and bromides from a corrosion standpoint!

Frédéric Vogel

The world needs exergy, not energy

10mo

You forgot chemolysis (or solvolysis), which is a much more selective way to recover much more valuable intermediates from mixed plastics than these gas phase technologies.

Tom Housmans

CTO @ Fuenix Ecogy Weert

9mo

I would postulate that which temperature is "just right", depends on the nature of the product you wish to produce. Production of light C2-C7 components may be advantageous from an energy point of view and indeed does have positive effects on contaminants, it does imply a Centralized model, where large quantities of plastic waste is shipped to a single location to be converted into a product slate akin to that of a naphtha cracker. In a decentralized model, where waste is processed locally, pyrolysis technology producing liquid which can be shipped easily may be preferred. Having said that, I think both pathways can coexist and I am a HUGE fan of the SYNOVA technology as it basically creates a plastic waste to virgin-like polymer cracker! I am rooting for your success!

Armando Ariza, Sr ChE TU

SENIOR CONSULTAN AT CONSULTING ENERGY

9mo

#Synova #Tech ✌ So far, pyrolys Hasta ahora, la pirólisis y la gasificación son las dos únicas vías de reciclaje químico descritas que funcionan para los flujos de residuos plásticos mixtos. Hay una tercera forma: el agrietamiento. Un craqueador de residuos sólidos funciona a temperaturas entre un reactor de pirólisis y un gasificador y produce un gas producto rico en moléculas de C2 a C7, muy similar a un horno de craqueo de vapor de nafta. 

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Han Raas

Chemical Engineer at Enssim Software

10mo

What can be said about the chemical inertia of the ashes for the three waste processing technologies?

Larry Schwartz

Principal at LS Consulting Houston

9mo

How about the feedstock cleanup before entering the reactor? How do we efficiently perform that process?

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Mark-Olof Dirksen

Senior Technical Projectlead Advanced Developments, Materials & Finishings, Recycling expert, DfR

10mo

Also de-polymerisation is a chemical recycling route for PET, PA etc.

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Chandrashekhar Abhyankar

Consultant in packaging and plastics and package testing and development.

9mo

Thank you for Information👍

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Jan Willem Slijkoord

Entrepreneur in climate neutral materials & molecular recycling of plastics

10mo

What about the yield of the cracking process compared to pyrolysis?

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Is no one adding hydrogen to the process? Seems like the best catalyst.

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