Multi-Stage Waste Vaporization and Magnetic Separation

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Solution Overview

Problem

Current waste processing methods are inefficient for handling heterogeneous industrial waste, which includes liquids and solids with varying temperatures and compositions, posing challenges due to oxidation, condensation, and separation of ferrous and non-ferrous metals.

Innovation Solution

A multi-step processing system with temperature-controlled chambers and separation techniques, including vibrating screens and cross-belt magnet configurations, to efficiently vaporize and separate waste materials, reducing oxidation and enabling effective handling of hazardous waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single high-temperature chamber is used to vaporize all waste materials, then vaporization efficiency is improved, but harmful oxidation reactions and condensation issues occur

Engineering Contradiction:
Improvevaporization efficiencyVSAvoidoxidation and condensation
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The waste processing system is divided into multiple chambers with progressively increasing temperatures. The first chamber operates at a lower temperature to vaporize volatile components without oxidation, while subsequent chambers operate at higher temperatures to vaporize less volatile materials. This segmentation allows different waste components to be processed at optimal temperatures, preventing harmful oxidation and condensation while maintaining high overall vaporization efficiency.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If heterogeneous waste materials are processed together, then processing simplicity is improved, but separation and treatment efficiency deteriorates

Engineering Contradiction:
Improveprocessing simplicityVSAvoidseparation and treatment efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The system processes heterogeneous waste materials by segmenting them through multiple chambers, each designed to vaporize specific components based on their volatility. The first chamber handles highly volatile materials, while subsequent chambers handle progressively less volatile materials. This approach maintains processing simplicity by handling all materials together through a unified multi-chamber system while achieving efficient separation and treatment of different waste components.

Inventive Principle:
Principle #1Segmentation

3Productivity

If magnetic separation is continuously activated, then ferromagnetic substance removal is improved, but energy consumption and operational complexity increase

Engineering Contradiction:
Improveferromagnetic substance removal efficiencyVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The magnetic separator employs periodic action by alternately activating and deactivating the magnetic field. During the active phase, ferromagnetic substances are attracted to the separator. During the inactive phase, the magnetic field is deactivated, allowing accumulated ferromagnetic materials to be discharged. This periodic operation achieves efficient ferromagnetic substance removal while minimizing energy consumption compared to continuous activation.

Inventive Principle:
Principle #19Periodic action

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 achieves efficient vaporization and separation of waste materials, allowing for the recycling of valuable components and reducing disposal costs by progressively heating waste to different temperatures and using magnetic separation to isolate ferromagnetic substances.

Implementation Method 1

The first chamber heats waste material to approximately the first temperature. The heating of the waste material produces vapors, which are output through a vapor outlet of the first chamber.

Methodology Applied
Scientific EffectVaporization: Evaporation

Implementation Method 2

The second chamber heats the remaining waste material to approximately the second temperature. The heating of the remaining waste material produces additional vapors, which are output through a vapor outlet of the second chamber.

Methodology Applied
Scientific EffectVaporization: Evaporation

Implementation Method 3

The magnet is located in proximity to the first conveyor belt such that the first conveyor belt is within range of the attractive force of the magnet. The magnet attracts the ferromagnetic substances.

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Implementation Method 4

The system includes a vibrating screen that operates at above approximately 750 vibrations per minute. The vibrations cause separation of particles, similar to a sifting mechanism.

Methodology Applied
Scientific EffectVibration: Vibration

Data Source

PatentUS7421959B2Systems and methods for processing waste materials
Publication Date: 2008.09.09 ARCWOOD ENVIRONMENTAL LLC
  • US7421959B2 patent drawing
  • US7421959B2 patent drawing
  • US7421959B2 patent drawing

AI summary

A multi-step process is provided in which waste material is processed in two or more steps. Specifically, an earlier step of the process heats the waste material at a first temperature. This results in a release of vapors for materials having a boiling point that is lower than the first temperature. A subsequent step of the process heats some or all of the remaining waste material at a second temperature, which is preferably higher than the first temperature. The subsequent heating results in a release of additional vapors for those materials having a boiling point that is lower than the second temperature. A system configured to carry out the process is also disclosed.