塑料“变废为油”转化效率超95%

Core Insights - The global plastic industry has produced over 10 billion tons of plastic, with approximately 80% ending up as waste, leading to significant resource wastage and environmental crises [1] - A breakthrough in plastic waste management has been achieved through a novel room-temperature catalytic conversion technology developed by a collaborative team of international researchers, enabling the conversion of mixed waste plastics into high-value fuels with over 95% conversion efficiency [1][3] Group 1: Plastic Waste Management Challenges - China, as the largest producer and consumer of plastics, faces severe challenges in waste plastic management, with domestic waste plastic stock exceeding 1 billion tons and an annual increase of over 6 million tons [2] - The composition of waste plastics shows that PE and PP account for 50%, while PVC accounts for 10%, indicating significant recycling potential [2] - Traditional waste plastic treatment methods, primarily landfilling and incineration, pose environmental risks, including soil and groundwater contamination and toxic emissions [2] Group 2: Innovative Recycling Technology - The new "plastic catalytic cracking-alkylation coupling reaction" concept integrates traditional oil refining processes, achieving three major innovations: reducing conversion temperature to room temperature, integrating multiple steps into a single process, and utilizing petrochemical by-products as reaction media [3] - This technology significantly lowers energy consumption by over 70% compared to traditional methods and enhances the economic viability of plastic recycling [3] Group 3: Industrial Application and Benefits - The new technology is highly compatible with existing refining processes, featuring low energy consumption, simple equipment, and high conversion efficiency, making it suitable for promotion in current refining facilities [4] - The use of ionic liquids as catalysts allows for nearly complete conversion of mixed waste plastics into high-quality fuels, effectively blocking chlorine pollution and converting it into harmless hydrochloric acid [4] - The technology transforms the economic value of waste plastics from negative returns associated with landfilling or incineration to positive returns, truly achieving the concept of "turning waste into treasure" [4]