Filter Candle with Zeolite Additive for Radial Stability
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Solution Overview
Problem
Filter candle elements used for dedusting industrial gases face instability and environmental compatibility issues due to pressure loads and the toxicity of traditional catalysts, which affect their performance and handling.
Innovation Solution
A filter candle element composed of inorganic fibers with a mineral additive, such as zeolite, that enhances radial pressure stability and bending moment while being environmentally friendly, and incorporates a catalytically active component for denitrification, improving mechanical and thermal stability and reducing pressure loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the length of filter candle elements is increased to increase throughput, then productivity is improved, but the weight and tensile stresses increase adversely affecting stability
Solution Approach 1:
The patent applies composite materials by combining inorganic fibers with mineral additives (such as corundum, alumina, or magnesia) to create a filter candle element with enhanced mechanical properties. This composite structure increases radial pressure stability and bending moment resistance while maintaining acceptable weight, allowing longer filter elements that can increase throughput without sacrificing stability.
2Adaptability or versatility
If traditional catalysts such as vanadium pentoxide are used for denitrification, then catalytic activity is achieved, but environmental compatibility deteriorates due to toxicity
Solution Approach 1:
The patent changes the chemical composition parameters of the catalyst by replacing toxic vanadium pentoxide with mineral additives such as corundum (Al2O3), alumina, or magnesia (MgO). These alternative materials maintain catalytic activity for denitrification while eliminating the toxicity associated with traditional catalysts, thereby improving environmental compatibility without sacrificing functional performance.
3Temperature
If filter cartridge elements are made from inorganic fibers for high-temperature filtration, then temperature resistance is improved, but susceptibility to pressure loads and bending moments increases
Solution Approach 1:
The patent employs composite materials by integrating mineral additives (corundum, alumina, magnesia) into the inorganic fiber matrix. This composite construction enhances the radial pressure stability and bending moment resistance of the filter element while preserving its high-temperature resistance, allowing the filter to withstand both thermal and mechanical stresses during operation.
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 increases the stability and environmental compatibility of filter candle elements, maintaining filtration performance and enabling effective denitrification at high temperatures without the toxicity of traditional catalysts.
Implementation Method 1
a mineral additive which is attached to the inorganic fibers
Implementation Method 2
incorporates a catalytically active component for denitrification
Data Source
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AI summary
The present invention relates to a filter candle element (1) for removing dust from industrial gases, having improved stability properties and environmental compatibility properties. Said filter candle element (1) comprises a filter body composed of inorganic fibers (5) and a mineral additive (6) attached to the inorganic fibers (5). The mineral additive (6) preferably comprises zeolite. A further aspect of the invention relates to a method for producing a filter candle element (1) for removing dust from industrial gases. The method comprises the following steps: producing a slurry comprising inorganic fibers (5) and a mineral additive (6); suctioning the slurry onto an absorbent core to form the filter candle element (1); drying the formed filter candle element (1).