Multi-level furnace material column gas separation
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Solution Overview
Problem
Existing multi-level furnaces for thermal treatment of materials, such as carbon-containing flows, face complexity in gas-technical separation between process spaces, often requiring separate ovens and intricate transfer devices.
Innovation Solution
A multi-level furnace design with process spaces arranged one above the other, utilizing a transfer device that forms a material column for gas-technical separation, comprising a conveyor unit or chute, which also functions as a discharge or input device, allowing for simplified construction and operation within a single furnace.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate ovens are used for each process room to achieve gas-technical separation, then gas separation between process spaces is improved, but device complexity increases
Solution Approach 1:
The transfer device is integrated directly into the furnace structure, merging the material transfer function with the gas separation function. The transfer device includes a transfer chamber that is gas-tightly connected to both upper and lower process chambers, eliminating the need for separate external ovens while maintaining effective gas separation between process spaces.
Solution Approach 2:
The transfer device serves multiple functions simultaneously: it transfers material between process chambers, maintains gas separation between chambers, and provides a sealed transition zone. This multi-functionality reduces the overall number of components needed while achieving the same gas separation effect that would otherwise require separate ovens.
2Reliability
If intricate transfer devices are used for gas-technical separation, then gas separation between process spaces is improved, but device complexity increases
Solution Approach 1:
The transfer device is integrated directly into the furnace structure, merging the material transfer function with the gas separation function. The transfer device includes a transfer chamber that is gas-tightly connected to both upper and lower process chambers, eliminating the need for separate external ovens while maintaining effective gas separation between process spaces.
3Reliability
If multiple separate components are used for material transfer and gas separation, then gas separation between process spaces is improved, but ease of manufacture decreases
Solution Approach 1:
The transfer device is integrated directly into the furnace structure, merging the material transfer function with the gas separation function. The transfer device includes a transfer chamber that is gas-tightly connected to both upper and lower process chambers, eliminating the need for separate external ovens while maintaining effective gas separation between process spaces.
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 design simplifies the gas-technical separation and allows for flexible material handling, enabling efficient transfer and treatment of materials while reducing structural complexity, allowing for individual adjustment of temperature, humidity, and pressure in each space, and enabling cocurrent or countercurrent treatment gas flow.
Implementation Method 1
the means for forming a material column comprise at least one conveyor unit or at least one chute or a slide
Implementation Method 2
torrefaction, in which biomass is thermally treated in the absence of air at relatively low temperatures of 250° to 450° C. by pyrolytic decomposition
Data Source
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AI summary
The invention relates to a multi-level furnace for thermal treatment of the material flow which has at least two process chambers arranged one above another, each providing at least two level floors, and is equipped with one or more transfer devices for transferring the treated material flow from an upper process chamber to a lower process chamber. In order to separate the two process chambers in terms of gas flow, the transfer device has means for forming a material column in the transition region between the upper and the lower process spaces, wherein said means for forming a material column comprise at least one conveying unit or at least one chute, and the at least one conveying unit or at least one chute also forms a material removal device for the upper process chamber and/or a material input device for the lower process chamber.