Continuous Feeding Device for Waste Polymer Pyrolysis
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Solution Overview
Problem
Current methods for treating waste flexible polymer materials like rubber and plastic through high-temperature pyrolysis face challenges in continuous feeding due to material densification, high energy consumption, and device losses, particularly in sealing and preheating, which restrict the efficiency and application of the technology.
Innovation Solution
A continuous feeding device comprising a feeding apparatus, material dispersion apparatus, and screw feeder that compresses, cuts, and disperses waste flexible polymer materials, utilizing pyrolysis oil-gas for preheating and self-lubrication, allowing for continuous sealing and efficient heat transfer, reducing energy consumption and device losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If waste flexible polymer material is directly crushed by mechanical force at the initial stage, then the material can be dispersed, but energy consumption increases and the feed end becomes difficult to seal
Solution Approach 1:
The patent applies preliminary action by pre-heating the waste flexible polymer material before mechanical crushing. The material is heated to a temperature where it becomes softer and more pliable, which facilitates subsequent mechanical dispersion while reducing the energy required for crushing. This pre-heating step transforms the material properties beforehand, making the overall process more energy-efficient.
Solution Approach 2:
The patent changes the temperature parameter of the material before mechanical processing. By heating the waste flexible polymer material to an optimal temperature range, the material's physical properties change - it becomes softer and easier to disperse mechanically. This parameter change reduces the mechanical energy needed for crushing and improves sealing at the feed end.
2Temperature
If a separate preheating unit is used to preheat the material, then the material can be preheated, but energy consumption increases and device loss increases
Solution Approach 1:
The patent merges the preheating function with the existing pyrolysis system by utilizing pyrolysis oil-gas that would otherwise be wasted. The oil-gas generated during pyrolysis is redirected to preheat the feed material, combining two functions (pyrolysis and preheating) into an integrated system. This eliminates the need for a separate preheating unit and reduces overall energy loss.
Solution Approach 2:
The patent converts the harmful waste heat from pyrolysis oil-gas into a beneficial preheating source. The hot oil-gas that would normally be discarded or require additional energy to manage is instead utilized to preheat the incoming material, transforming a waste stream into a useful energy source and reducing total energy consumption.
3Quantity of substance
If waste flexible polymer material is compressed, then the material becomes denser, but it becomes more difficult to disperse and feed
Solution Approach 1:
The patent applies preliminary heating before compression and dispersion. By pre-heating the material first, it becomes softer and more pliable, which allows for easier compression into dense forms that can subsequently be more easily dispersed. The pre-heating prepares the material in advance, making subsequent processing steps more effective.
Solution Approach 2:
The patent changes the temperature parameter to alter the material's physical properties before compression. Heating the material changes its viscosity and flexibility, allowing it to be compressed into dense forms that maintain dispersibility. The temperature parameter adjustment enables the material to achieve both density and ease of dispersion.
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
Enables continuous and efficient pyrolysis of waste flexible polymer materials by maximizing heat utilization, improving pyrolysis efficiency, reducing energy consumption, and enhancing device sealing, thereby overcoming previous limitations in treating waste rubber and plastic.
Implementation Method 1
a pyrolysis oil gas is used for preheating and self-lubricating the device
Implementation Method 2
the high-temperature oil-gas of the pyrolysis machine passes through the subsequent feeding device to enter into the cutting and dispersing section with counter-current
Implementation Method 3
as heat of the oil-gas is released in this section, part of the oil-gas condenses into oil fluid and returns to the subsequent feeding device, which achieves self-lubrication of the device
Implementation Method 4
the condensed oil fluid is utilized to carry out self-lubrication for the subsequent feeding device
Implementation Method 5
The waste flexible polymer material is pre-treated during compression, cutting and dispersion
Implementation Method 6
cut and disperse it after compression. During the dispersing process, the material is pre-heated
Implementation Method 7
the device used comprises a feeding apparatus, a material dispersion apparatus and a screw feeder
Data Source
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AI summary
The present invention relates to the technical field of waste pyrolysis, and specifically relates to a continuous feeding process and device for waste flexible polymer material. The process continuously feeds waste flexible polymer material into a subsequent pyrolysis apparatus following compression, cutting and dispersion; the waste flexible polymer material is pre-treated during compression, cutting and dispersion to achieve continuous sealing feeding, while a pyrolysis oil gas is used for preheating and self-lubricating the device; the device used comprises a feeding apparatus, a material dispersion apparatus and a screw feeder; the material is compressed, cut and dispersed in the feeding apparatus and the material dispersion apparatus, and then falls into the screw feeder, being preheated and thermally sealed by means of the pyrolysis oil-gas in the screw feeder; by using such a process, waste flexible polymer material from various sources may be continuously fed for pyrolysis, fully using the temperature of an oil-gas generated in a pyrolysis machine for preheating and device lubrication, thereby improving the efficiency of pyrolysis and reducing the loss and energy consumption of the device.