Plastic Pyrolysis Reactor Zones for Industrial-Scale Recycling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There are few effective options for recycling mixed polyolefin streams of post-consumer and post-industrial plastics into value-added chemical and refinery feedstock products at an industrially significant scale.
Innovation Solution
A reactor system is used to pyrolyze plastic feedstock, comprising post-consumer and/or post-industrial plastics, capable of producing hydrocarbon-based compositions by heating the feedstock to temperatures between 200° C. and 1,000° C., with an average output of 0.30 pounds of pyrolyzed product per hour per gallon of reactor volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pyrolysis is used to convert plastic waste into hydrocarbon compositions, then recycling effectiveness is improved, but industrial scalability remains limited
Solution Approach 1:
The reactor system is divided into multiple heating zones with independent temperature control, allowing different sections to operate at optimized temperatures for specific pyrolysis stages. This segmentation enables continuous processing while maintaining high conversion efficiency, addressing both recycling effectiveness and industrial scalability
Solution Approach 2:
The system implements continuous feedstock injection and product collection rather than batch processing. The reactor maintains steady-state operation with continuous plastic waste feedstock input and hydrocarbon composition output, enabling industrial-scale productivity while preserving high recycling effectiveness through consistent process conditions
2Productivity
If heating temperature is increased to improve pyrolysis efficiency, then product output increases, but energy consumption increases
Solution Approach 1:
Different sections of the reactor are maintained at different temperature zones, with higher temperatures in the pyrolysis zone for efficient product output and lower temperatures in other zones. This local quality approach maximizes product output while minimizing overall energy consumption by heating only necessary areas to high temperatures
Solution Approach 2:
The system dynamically adjusts heating temperature parameters based on feedstock composition and desired product specifications. By optimizing temperature parameters rather than maintaining constant high temperatures, the system achieves high product output with reduced energy consumption through precise parameter control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively converts plastic waste into valuable hydrocarbon compositions, addressing the recycling challenge and enabling the production of improved products at an industrially significant scale.
Implementation Method 1
one or more heaters configured for heating the feedstock in the reactor vessel's internal volume to a temperature between 200° C. and 1,000° C.
Data Source
AI summary
Disclosed herein are reactors for pyrolysis of plastic feedstock comprising post-consumer and/or post-industrial plastics. In various implementations, the reactors include a reactor vessel, and one or more heaters configured for heating the feedstock in the reactor vessel's internal volume.