Plasma Reactor Uniform Temperature Distribution via Segmented Torch Array
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Solution Overview
Problem
Existing plasma reactors face issues with non-uniform temperature distribution, leading to dead spaces and material deposition, which affects their operation and lifetime, and struggle to efficiently convert waste materials into desired end products while ensuring hazardous components are contained.
Innovation Solution
A plasma reactor design with a cylindrical reaction volume and multiple plasma torches of different types and power outputs, ensuring uniform high-temperature distribution across the reaction volume, and real-time process monitoring and control to achieve efficient thermal decomposition and separation of waste constituents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single plasma torch is used in conventional plasma reactors, then the device complexity is reduced, but the temperature distribution becomes non-uniform creating dead spaces and material deposition
Solution Approach 1:
The invention divides the heating function into multiple segments by using several plasma torches (at least two) distributed around the reaction chamber. Each torch contributes to heating a specific zone, and their combined effect creates uniform temperature distribution throughout the chamber, eliminating dead spaces and material deposition problems associated with single-torch configurations.
2Temperature
If multiple plasma torches of different types and power outputs are used, then the temperature distribution uniformity is improved, but the device complexity increases
Solution Approach 1:
The invention applies local quality by using plasma torches with different power outputs and characteristics in different locations around the reaction chamber. Each torch is selected and positioned to address the specific heating requirements of its local zone, ensuring that hot spots and cold zones are minimized while achieving overall uniform temperature distribution.
Solution Approach 2:
The invention incorporates sensors that continuously monitor temperature and other parameters within the reaction chamber, feeding this information back to a control system. The control system adjusts the power output of individual plasma torches in real-time based on the feedback signals, maintaining uniform temperature distribution dynamically even as processing conditions change.
3Productivity
If real-time monitoring and control of physical/chemical parameters is implemented, then the conversion efficiency into desired end products is improved, but the device complexity increases
Solution Approach 1:
The invention implements comprehensive feedback control by placing sensors throughout the reaction chamber that monitor physical and chemical parameters (temperature, pressure, gas composition, etc.). These sensors provide real-time data to a control system that automatically adjusts plasma torch power, feedstock addition rates, and other process parameters to optimize conversion efficiency and ensure hazardous components are contained.
Solution Approach 2:
The control system operates autonomously, using feedback from sensors to self-adjust process parameters without continuous human intervention. The system automatically maintains optimal conditions for converting waste materials into desired end products while ensuring safety constraints are met, reducing the need for manual monitoring and control.
4Temperature
If the reaction volume is designed with uniform cross-section, then the temperature distribution uniformity is improved, but the device complexity increases
Solution Approach 1:
The invention employs a reaction chamber with uniform cross-sectional geometry (cylindrical or spherical design) rather than varying cross-sections. This curved, symmetric geometry ensures that heat from multiple plasma torches distributes evenly throughout the volume, eliminating temperature gradients that would occur in chambers with varying cross-sections, while the simplicity of the geometric form actually reduces manufacturing complexity.
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 solution enables nearly 100% recycling of waste materials into marketable products, maintaining a stable and homogeneous temperature of at least 3000°C, effectively decomposing hazardous components and preventing environmental contamination.
Implementation Method 1
Thermal plasmas, particularly high temperature thermal plasmas are highly promising for waste treatment/processing due to their advantageous physical and chemical properties, because they have sufficiently high energy to decompose the treated material
Implementation Method 2
The plasma reactor is suitable for converting wastes and byproducts into one or more predefined end products through thermal decomposition
Implementation Method 3
ensuring uniform high-temperature distribution across the reaction volume
Implementation Method 4
maintaining a stable and homogeneous temperature of at least 3000°C
Implementation Method 5
efficient thermal decomposition and separation of waste constituents
Implementation Method 6
the metallic and non-metallic constituents of said slag separate from each other due to the difference in the specific weights
Data Source
Figure 1
Figure 2A~2B
Figure 2C~3
AI summary
The object of the present invention is a plasma reactor (10) to convert waste material by thermal plasma into desired end product. The plasma reactor (10) comprises a reaction volume (5) delimited by walling (14), a gas outlet port (19) and a melt treatment unit (13), wherein said gas outlet port (19) delimits the reaction volume (5) from the top and said melt treatment unit (13) delimits the reaction volume (5) from the bottom, and wherein - when the plasma reactor (10) is in operation - the reaction volume (5) is connected to both the gas outlet port (19) and the melt treatment unit (13) to maintain a free flow of material there through, and wherein the reaction volume (5) includes agaseous material treatment region (5C), a gasification region (5B) and a melt treatment region (5 A), the gaseous material treatment region opens directly to the gas outlet port (19), the melt treatment region (5 A) at least partially forms part of the melt treatment unit (13) and the gasification region (5B) is located between the gaseous material treatment region (5C) and the melt treatment region (5 A); a waste material supply mechanism passing through the walling (14) and opening into the gasification region (5B) of the reaction volume (5); plasma torches arranged to generate thermal plasma in each of said regions (5 A, 5B, 5C) of the reaction volume (5) separately, wherein at least one plasma torch is provided for generating the thermal plasma in each region (5 A, 5B, 5C); sensors (11, 11') arranged in said regions (5 A, 5B, 5C) of the reaction volume (5), the sensors (11, 11') are configured to monitor physical and/or chemical conditions prevailing within said regions (5 A, 5B, 5C) and to measure physical/chemical parameters representative of said conditions at given instances when the plasma reactor (10) is in operation; a data collecting and control unit, wherein said sensors (11, 11') are in data communication connection with the data collecting and control unit for transferring measurement data obtained by measurements performed by the sensors, the measurement date being representative of the instantaneous physical and/or chemical conditions prevailing within said regions (5 A, 5B, 5C) when the plasma reactor (10) is in operation. In the plasma reactor (10) according to the invention, each plasma torch comprises an arc forming material supply inlet (D) for introducing arc forming material into the reaction volume (5) and an additive supply inlet (C) for introducing additive into the reaction volume (5), wherein the additive is provided by a substance that is necessary for the conversion of the waste material into desired end product, and wherein at least some of said additive supply inlets (C) is configured to allow real-time control of feeding of said substance into the thermal plasma in the reaction volume (5) by the respective plasma torch upon a control signal produced and outputted by the data collecting and control unit based on the measurement data of said sensors (11, 11') and preset operational parameters for the operation of the plasma reactor (10).