Refractory Wall Gas Distribution Channel Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing refractory walls in incinerators and fluidized bed furnaces face challenges in preventing corrosive flue gases from penetrating the protective cladding, requiring additional design efforts and suboptimal gas distribution due to the need for transverse channels and multiple inlet openings.
Innovation Solution
A refractory wall design featuring a gas distribution channel arranged at the lower end of the rear-ventilated section, which extends across the width and communicates with the space between the protective cladding and the boiler wall, allowing for direct and optimal distribution of protective gas from below, potentially using a gas distribution box or integrated refractory plates, reducing the need for additional construction elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If transverse channels are added to distribute gas laterally, then gas distribution improves, but device complexity increases
Solution Approach 1:
The patent transitions from lateral gas distribution (horizontal dimension) to bottom-up gas distribution (vertical dimension). The gas distribution channel is positioned at the lower end of the refractory wall, feeding protective gas upward into the gap between the boiler wall and protective cladding. This dimensional change eliminates the need for complex transverse channels while achieving uniform gas distribution across the wall width.
2Manufacturing precision
If multiple inlet openings are created in the boiler wall, then gas supply coverage improves, but manufacturing complexity increases
Solution Approach 1:
Instead of creating multiple discrete inlet openings distributed across the boiler wall, the patent uses a single continuous gas distribution channel positioned at the lower end of the refractory wall. This channel spans the width of the wall and provides gas supply through a unified structure, reducing the number of penetration points and simplifying boiler wall fabrication.
3Manufacturing precision
If gas is fed from the side into grooves, then gas distribution is achieved, but design complexity increases
Solution Approach 1:
The patent inverts the conventional approach of feeding gas from the side into grooves. Instead, the gas distribution channel is positioned at the lower end and feeds gas upward from below. This inversion simplifies the panel design by eliminating the need for side-fed grooves and transverse channels, while still achieving effective gas distribution across the entire wall width.
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 enhances the distribution of protective gas over the entire wall width, reducing corrosion risks and design complexity by eliminating the need for transverse channels and optimizing gas supply routes, thus improving the protection of the boiler wall.
Implementation Method 1
The gas or air is under a slight overpressure compared to the combustion chamber, which prevents the flue gases from penetrating the combustion chamber into the space between the walls
Implementation Method 2
The gas or air is under a slight overpressure compared to the combustion chamber, which prevents the flue gases from penetrating the combustion chamber into the space between the walls and attacking the boiler wall or other metal parts
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a fireproof wall, comprising a boiler wall (1) and a protective cladding (2) positioned in front thereof made of a plurality of fireproof plates (21, 22). The fireproof wall has a rear-ventilated wall section, in the region of which an intermediate space (3) is present between the boiler wall (1) and the protective cladding (2). Gas supply means for supplying a protective gas to the intermediate space (3) comprise a gas distribution channel (K) and at least one gas supply line (52) for supplying protective gas to the gas distribution channel. The gas distribution channel (K) is arranged at the lower end of the rear-ventilated wall section, and below the gas distribution channel (K), there is no rear-ventilated wall section. The gas distribution channel (K) is arranged on the same side as the protective cladding (2) with respect to the boiler wall (1), and extends transversely across the protective cladding (2). The gas distribution channel (K) is communicatively connected to the intermediate space (3), continuously over the length of the gas distribution channel, or at several discrete points communicatively with the intermediate space (3), between the part of the protective cladding (2) located above the same and the boiler wall (1).