Extruder Decomposition Simulation for Waste Plastic Recycling
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Solution Overview
Problem
Existing simulation devices lack the capability to effectively simulate the decomposition process of raw materials in an extrusion process using an extruder, particularly for recycling processes involving waste plastics.
Innovation Solution
A simulation device, method, and program that acquire initial concentrations of to-be-decomposed components in raw materials and calculate their concentrations or amounts of decomposed substances for each region in the axial direction of the extruder, based on acquired initial data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing simulation devices are used, then general extrusion parameters (pressure, temperature, filling rate) can be calculated, but the decomposition process of raw materials cannot be simulated
Solution Approach 1:
The simulation device is enhanced to perform multiple functions: it maintains the ability to calculate general extrusion parameters (pressure, temperature, filling rate) while adding the capability to simulate decomposition processes. This is achieved by integrating both the general extrusion simulation functions and the specific decomposition simulation functions into a single unified system, allowing the device to handle both types of calculations simultaneously or independently based on user needs.
2Loss of information
If decomposition simulation is added to the extrusion simulation, then comprehensive raw material analysis is achieved, but calculation complexity increases
Solution Approach 1:
The simulation system is divided into distinct functional modules: an extrusion simulation module that handles pressure, temperature, and filling rate calculations, and a decomposition simulation module that handles chemical composition changes. Each module operates independently with its own calculation algorithms and data requirements. The modules exchange necessary data through defined interfaces, allowing the complex overall simulation to be managed as separate, more tractable sub-problems that can be developed, tested, and maintained independently.
Data Source
AI summary
A simulation device calculating a predetermined physical quantity for an extruder, comprises: an acquisition unit that acquires, in a case where a raw material to be fed into the extruder is a material decomposing in an extrusion process, an initial amount of a to-be-decomposed component contained in the raw material; and a processing unit that calculates an amount of a to-be-decomposed component in a raw material or an amount of decomposed substance for each region in an axial direction of the extruder based on an acquired initial amount.