Niutech: Continuous Pyrolysis Technology Drives Innovation in Chemical Recycling of Waste Plastics

Global plastic production exceeds 400 million tons annually, but less than 10% is recycled through mechanical methods. Low-value plastics (e.g., agricultural film, packaging bags) account for over 40% of total plastic waste. Due to high sorting costs and low recycling value, they are often landfilled or incinerated. While traditional mechanical recycling is mature, it only works for single-material plastics and faces "downcycling" issues. Chemical recycling technologies like pyrolysis and catalytic cracking convert mixed plastics into fuel or chemical feedstocks, offering high-value solutions for low-value waste plastics.

1. Core Breakthroughs in Continuous Pyrolysis Technology  
Niutech's continuous pyrolysis technology decomposes waste plastics into pyrolysis oil, combustible gas, and solid residue in an oxygen-free, temperature-controlled environment. Compared to traditional batch processes, Niutech's system achieves three innovations:  
- Efficient continuous production: Modular reactor design enables automated feeding after crushing. Continuous operation delivers an annual processing capacity of 10,000-30,000 tons per unit with low energy consumption.  
- High-value outputs: Pyrolysis oil has a high calorific value, directly replacing fossil fuels or refining into diesel. Combustible gas powers the system, creating an energy loop.  
- Enhanced eco-friendliness: Integrated flue gas purification (desulfurization, denitrification) meets EU emission standards. Solid residue (carbon content <5%) serves as raw material for construction.  

2. Niutech's Benchmark Projects & Data Validation  
The technology has been deployed globally with diverse applications:  
- Denmark project: Processes 20,000 tons of waste plastics annually. Pyrolysis oil supplies BASF for new plastic production, achieving "closed-loop recycling" as an EU chemical recycling model.  
- Thailand project: A 30,000-ton plant operating for over 10 years converts mixed plastics into gasoline/diesel fractions for fleet fuel, proving long-term stability.  
- Medical waste treatment: Henan, China's first continuous medical plastic waste plant safely processes hazardous waste while producing pyrolysis oil, filling an industry gap.  
Challenges & Outlook  
Despite progress, hurdles remain: complex sorting, high impurity levels (e.g., metals, PVC), fragmented collection systems, and policy uncertainties. IDTechEx predicts global pyrolysis capacity will surpass 17 million tons/year by 2034. Niutech aims to lead the chemical recycling sector, expanding its "pyrolysis plant" network worldwide to combat plastic pollution and transform waste into "white resources," advancing the industry's sustainable growth.