Segmented Piping System for High-Temperature Gas Handling
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Solution Overview
Problem
Current pipeline systems for high process gas temperatures either cannot be heated externally or cannot handle process gas streams involved in heat and mass transport, limiting their application in high-temperature processes.
Innovation Solution
A pipeline system with a metallic process gas inlet and outlet part, and a non-metallic intermediate part made of a high-thermal-conductivity material, allowing for external heating and efficient heat management, along with a centering device and sealing mechanisms for stability and reduced heat loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If metallic piping systems with heat-resistant linings or cooling jackets are used for process gas temperatures exceeding 1,200°C, then the piping material temperature is reduced to below 1,200°C, but the system cannot be heated externally
Solution Approach 1:
The piping system is divided into multiple sections with different material properties: metallic inlet/outlet sections for structural stability and connection, and non-metallic intermediate sections for high-temperature resistance and external heating capability. This segmentation allows each section to fulfill its specific function without compromising the overall system performance.
Solution Approach 2:
The piping system uses a composite structure combining metallic and non-metallic materials in a single system. The non-metallic intermediate sections (e.g., ceramic) provide high-temperature resistance and external heating capability, while the metallic sections provide structural stability and connection interfaces, creating a hybrid system that overcomes the limitations of pure metallic or pure non-metallic piping.
2Temperature
If ceramic piping systems are used for process gas temperatures up to 1,700°C, then external heating is possible, but the system cannot be supplied with process gas streams for heat and mass transfer
Solution Approach 1:
The piping system is segmented into metallic inlet/outlet sections that interface with process gas streams and non-metallic intermediate sections that handle high-temperature zones. This allows the system to simultaneously support process gas flow for heat and mass transfer while enabling external heating in the ceramic sections.
Solution Approach 2:
By combining metallic and non-metallic materials, the system achieves both process gas stream supply capability (through metallic sections) and external heating capability at high temperatures (through non-metallic sections), resolving the contradiction between these two functions.
3Temperature
If a piping system uses multiple different materials for different sections, then high-temperature handling and external heating are enabled, but the system complexity increases
Solution Approach 1:
The piping system is divided into standardized modular sections (metallic inlet section, non-metallic intermediate sections, metallic outlet section) that can be assembled in a systematic way. While the materials differ, the segmented modular design simplifies the overall system integration and maintenance compared to a fully custom multi-material design.
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
Enables the handling of high-temperature process gas streams up to 1700°C, facilitating processes like drying, calcination, and pyrolysis while maintaining thermal efficiency and structural stability.
Implementation Method 1
at least one intermediate part (7) made of a non-metallic material, in particular of a non-weldable material, having a thermal conductivity of ≥ 1.0 W/(mK) at the manufacturing and/or treatment temperature
Implementation Method 2
a centering device (12) further arranged on an end section (11) of a piping unit (4) of piping units (4) assigned to each other in pairs, which is suitable for receiving an end section (11) of the other piping unit (4)
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a piping system (1) for the production and/or treatment of particles (P) in a process gas stream, in particular in a pulsating process gas stream, at very high process gas temperatures of greater than 1,200 °C, and its use.