Titanium Oxide Granule Optimization for Waste Pyrolysis
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Solution Overview
Problem
Conventional titanium oxide catalysts used in plastic and organic waste decomposition are prone to pulverization, leading to reduced pyrolysis efficiency, inability to separate from metals and inorganic substances, and poor flowability, resulting in inefficient waste treatment and catalyst wastage.
Innovation Solution
Optimized titanium oxide granules with specific characteristics, including spherical shape, particle diameter, tap density, and specific surface area, are used for efficient decomposition, separation from metals and inorganic substances, and resistance to fine powder formation during pyrolysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional titanium oxide is used as catalyst, then it can decompose plastic waste, but it pulverizes into fine powder during pyrolysis, reducing pyrolysis efficiency over time
Solution Approach 1:
The patent changes the particle size parameter of titanium oxide from conventional fine powder to granules with specific diameter ranges (0.1-1.0mm, preferably 0.3-0.6mm). This parameter change prevents pulverization during pyrolysis, maintains catalytic activity, and resolves the contradiction between reliability and composition stability.
Solution Approach 2:
The patent uses composite granules consisting of titanium oxide particles aggregated into granular form with specific physical properties (density 2.5-3.5g/cm³, porosity 30-70%). This composite structure combines the catalytic properties of titanium oxide with the mechanical stability of granular morphology, resolving the contradiction between maintaining decomposition efficiency and preventing pulverization.
2Ease of manufacture
If conventional titanium oxide is used, then it can catalyze decomposition, but it cannot be easily separated from metals and inorganic substances mixed with plastic waste
Solution Approach 1:
The patent changes the physical state parameter from fine powder to granules with specific size (0.1-1.0mm) and density characteristics. This parameter change enables easy separation from metals and inorganic substances through screening and density-based separation methods, resolving the contradiction between ease of manufacture and quantity of substance recovery.
3Reliability
If conventional titanium oxide granules with larger particle size are used to prevent pulverization, then fine powder formation is reduced, but pyrolysis efficiency becomes inferior
Solution Approach 1:
The patent optimizes the particle size parameter to a specific range (0.1-1.0mm, preferably 0.3-0.6mm) that balances two opposing requirements: large enough to prevent pulverization and maintain structural stability, but small enough to maintain high surface area for catalytic activity. This precise parameter optimization resolves the contradiction between reliability and shape.
Solution Approach 2:
The patent creates composite granules with specific porosity (30-70%) and density (2.5-3.5g/cm³) that provide both mechanical stability and high catalytic surface area. The porous structure within the granules maintains active catalytic sites while the granular outer structure prevents pulverization, resolving the contradiction between efficiency and particle size.
4Ease of operation
If powdered catalyst is used, then it can mix with plastic and organic waste, but it has poor flowability and is wasted instead of being returned to reaction tank
Solution Approach 1:
The patent changes the physical form parameter from fine powder to granules with specific size (0.1-1.0mm) and density characteristics. This parameter change provides good flowability for easy return to reaction tank while maintaining adequate mixing capability with waste materials, resolving the contradiction between ease of operation and loss of substance.
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 optimized titanium oxide granules demonstrate significantly higher waste treatment capability, efficient separation from foreign materials, and improved durability, leading to enhanced decomposition efficiency and reduced catalyst wastage compared to conventional methods.
Implementation Method 1
converting plastic and/or organic waste to gas by heating the plastic and/or organic waste in a range of 420°C to 560°C together with a catalyst formed of titanium oxide granules
Implementation Method 2
heating the plastic and/or organic waste in a range of 420°C to 560°C together with a catalyst formed of titanium oxide granules containing titanium oxide as an active component
Data Source
Figure 1
Figure 2A~2C
Figure 3A~3C
AI summary
Provided is a method of decomposing plastic and organic waste by using titanium oxide granules which are easily separated from metals and inorganic substances, have a highly efficient decomposing capability, and have a characteristic of fine powder formation resistance during pyrolysis. More specifically, the method of decomposing plastic and organic waste by using titanium oxide granules which are easily separated from metals and inorganic substances, have a highly efficient decomposing capability, and have a characteristic of fine powder formation resistance during pyrolysis has been established by optimizing the characteristics of titanium oxide granules.