Salvage Vehicle Olefin Resin Recovery With Fiber Separation
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Solution Overview
Problem
Existing methods for recovering olefin resin from salvage vehicles result in low recovery rates and concentrations due to entanglement with fibers during air sorting, leading to increased low-specific-gravity dust.
Innovation Solution
A method involving dismantling the vehicle to separate interior components containing fibers, shredding the vehicle shell and interior components separately, followed by magnetic and air sorting, and then wet gravitational sorting to enhance the recovery of olefin resin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If air sorting is performed on shredder dust containing fibers, then sorting by specific gravity is achieved, but olefin resin gets tangled with fibers causing decreased recovery rate and concentration
Solution Approach 1:
The invention divides the shredder dust into two separate streams: one containing fibers and another containing non-fiber materials including olefin resin. This segmentation is achieved by first separating fibers from the shredder dust through a fiber separation device, then performing air sorting on the non-fiber stream. By segmenting the mixture, the harmful entanglement between olefin resin and fibers is eliminated, allowing for improved recovery rate and concentration of olefin resin.
2Quantity of substance
If fibers are included in the shredder dust, then complete material recovery is achieved, but low-specific-gravity dust increases reducing olefin resin recovery quality
Solution Approach 1:
The invention extracts and removes fibers from the shredder dust before performing air sorting. By taking out the fiber component, the invention prevents fibers from interfering with the air sorting process and from forming low-specific-gravity dust that would reduce olefin resin recovery quality. The extracted fibers can be processed separately, while the non-fiber stream undergoes efficient air sorting to recover olefin resin with high purity and concentration.
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
Improves the recovery rate and concentration of olefin resin by reducing the amount of low-specific-gravity dust and increasing the recovery of high-specific-gravity dust, particularly through enhanced air and water gravitational sorting techniques.
Implementation Method 1
air sorting the first shredder dust to obtain first low-specific-gravity dust and first high-specific-gravity dust which is higher specific gravity than the first low-specific-gravity dust
Implementation Method 2
the first high-specific-gravity dust is water gravitational sorted to obtain a dust having specific gravity less than 1, and dust having a specific gravity of at least 1
Implementation Method 3
iron is recovered by magnetic sorting the shredded salvage vehicle shell, upon obtaining the first shredder dust
Data Source
AI summary
A method for recovering resin from a salvage vehicle is provided that includes the steps of: dismantling the salvage vehicle to obtain a salvage vehicle shell; shredding the salvage vehicle shell to obtain a first shredder dust; air sorting the first shredder dust to obtain first low-specific-gravity dust and first high-specific-gravity dust which is higher specific gravity than the first low-specific-gravity dust; and wet gravitational sorting the first high-specific-gravity dust, in which interior components containing fiber are removed upon dismantling the salvage vehicle, and further including steps of shredding the interior components to obtain second shredder dust; and air sorting the second shredder dust to obtain second low-specific-gravity dust and second high-specific-gravity dust which is higher specific gravity than the second low-specific-gravity dust.