Vacuum Cracking Electronic Waste Processing Apparatus
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Solution Overview
Problem
Conventional high-temperature combustion methods for electronic waste generate toxic gases like dioxin and hydrogen chloride, leading to safety concerns, increased costs, and environmental pollution, with limited recyclability of residues.
Innovation Solution
A method and apparatus involving a vacuum cracking process with high-frequency heating, followed by recovery and separation steps to extract gaseous and liquid metals, filtering out hydrogen chloride, and utilizing the resulting materials for further processing, eliminating the need for air pollution treatment devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-temperature combustion is used to treat electronic waste, then the waste can be processed, but toxic gases such as dioxin and hydrogen chloride are generated causing environmental pollution and safety concerns
Solution Approach 1:
The patent applies vacuum environment (inert atmosphere) in the cracking chamber to prevent oxygen from reacting with decomposed organic materials. The vacuum pump creates and maintains a vacuum state, eliminating the formation of toxic gases like dioxin and hydrogen chloride that would otherwise form in atmospheric combustion, while still enabling effective waste treatment through thermal decomposition.
Solution Approach 2:
The patent changes the operating parameters from atmospheric high-temperature combustion to vacuum low-temperature cracking. By controlling the vacuum degree and heating temperature (maintaining below 200°C for plastic decomposition), the process transforms the chemical reaction pathways to avoid toxic gas formation while achieving complete waste decomposition and resource recovery.
2Productivity
If high-temperature combustion is used, then electronic waste can be treated, but the risk of gas explosion increases due to instantaneous high pressure generation
Solution Approach 1:
The vacuum environment eliminates oxygen, preventing the formation of explosive gas mixtures. Without oxygen present, the decomposed gases cannot ignite or explode, fundamentally removing the explosion hazard while maintaining effective waste treatment capability through controlled thermal decomposition.
3Object-generated harmful factors
If air pollution treatment devices are added to handle toxic gases, then environmental pollution can be reduced, but operational costs and device complexity increase
Solution Approach 1:
The patent extracts and removes oxygen from the system by creating a vacuum environment. By taking out the oxygen that enables toxic gas formation and explosion hazards, the process eliminates the need for downstream air pollution treatment devices, simplifying the overall system while achieving complete emission control.
4Productivity
If high-temperature combustion is used, then electronic waste can be processed, but valuable metals are lost and recyclability is limited
Solution Approach 1:
The patent changes the temperature parameter from high-temperature combustion (>1500°C) to controlled low-temperature vacuum cracking (plastic decomposition below 200°C, metal melting at appropriate temperatures). This parameter change enables selective decomposition: plastics decompose at lower temperatures releasing recoverable oils and gases, while metals melt and collect separately, maximizing resource recovery and eliminating substance loss.
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
This approach safely recycles electronic waste, reduces the risk of gas explosions, lowers operational costs, and enhances environmental sustainability by avoiding toxic gas generation and enabling the recovery of valuable metals.
Implementation Method 1
The vacuum pump is driven by the power supply device and is connected to the vacuum chamber, and this enables an interior of the vacuum chamber to be in a vacuum state via the vacuum pump and the power supply device
Implementation Method 2
The high-frequency furnace body is disposed in the vacuum chamber and is supplied with power required for high-frequency heating from the power supply device
Implementation Method 3
After the filtered gaseous oil and gas is cooled in the condensation cylinder of the separation device, a portion of the filtered gaseous oil and gas generates liquid oil and is stored therein
Data Source
AI summary
An electronic waste processing apparatus has a power supply device, a vacuum cracking device, a filter device, and a separation device. The vacuum device is electrically connected to the power supply device, and has a vacuum pump, a vacuum chamber, and a high-frequency furnace body. The vacuum chamber is connected to and communicates with the vacuum pump. The high-frequency furnace body is disposed in the vacuum chamber. The filter device is electrically connected to the power supply device, and is connected to and communicates with the high-frequency furnace body of the vacuum cracking device. The separation device is electrically connected to the power supply device, is connected to and communicates with the vacuum pump and the filter device, and has a condensation cylinder, a cooling cylinder, and an oil storage tank.