High-Purity Calcium Oxide via Platinum Catalysis
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Solution Overview
Problem
Current calcium oxide products used in food and medical applications lack high purity, leading to health concerns and limited effectiveness, with existing methods not adequately addressing the need for reliable, high-purity calcium oxide compounds for antibacterial and therapeutic uses.
Innovation Solution
A method involving the calcination of natural calcium oxide sources, such as egg shells, in a rotary kiln using platinum as a catalyst and nitrogen as an inert atmosphere at specific temperatures to produce calcium oxide with impurity levels ≤1 ppm for Sulfur, Nickel, Arsenic, Antimony, Lead, Mercury, and Silicon, achieving a high-purity calcium oxide compound suitable for food preservation and medical applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to produce calcium oxide, then production cost is reduced, but purity level is insufficient (impurities >1 ppm)
Solution Approach 1:
The patent employs an inert atmosphere (nitrogen or argon) during the calcination process to prevent contamination of calcium oxide with atmospheric impurities. This creates a controlled environment that ensures high purity levels (≤1 ppm for heavy metals and other impurities) while maintaining feasible production conditions through standardized atmospheric control protocols.
Solution Approach 2:
The patent uses platinum as a catalyst during the calcination process to facilitate the decomposition of calcium carbonate into calcium oxide and carbon dioxide. The platinum catalyst enables the reaction to proceed at lower temperatures and with higher efficiency, achieving high purity calcium oxide production without requiring excessively complex or costly manufacturing conditions.
2Manufacturing precision
If high purity calcium oxide is produced using advanced methods, then purity level increases (≤1 ppm impurities), but production cost increases
Solution Approach 1:
The use of inert atmosphere (nitrogen or argon) during calcination prevents contamination and ensures high purity calcium oxide production. This approach achieves ≤1 ppm impurity levels through a relatively simple and cost-effective method compared to more complex purification technologies, thereby controlling production costs while maintaining high purity standards.
Solution Approach 2:
The patent optimizes calcination parameters including temperature (800-1000°C), time (2-4 hours), and atmospheric composition to achieve high purity calcium oxide. By carefully controlling these parameters, the process achieves ≤1 ppm impurity levels while avoiding excessive energy consumption and production costs associated with more extreme processing conditions.
3Ease of operation
If conventional calcium oxide is used in food applications, then availability is improved, but health safety is compromised due to impurities
Solution Approach 1:
The patent uses inert atmosphere during production to prevent contamination with heavy metals and other harmful impurities, achieving purity levels of ≤1 ppm for substances like lead, mercury, arsenic, and cadmium. This ensures the calcium oxide is safe for food applications while remaining readily available through standard production processes.
Solution Approach 2:
The platinum catalyst facilitates complete and controlled decomposition of calcium carbonate, ensuring thorough removal of organic contaminants and achieving high purity calcium oxide suitable for food contact applications. The catalytic process ensures consistent purification without introducing harmful residues.
4Ease of operation
If conventional calcium oxide is used in medical applications, then accessibility is improved, but therapeutic effectiveness is limited due to insufficient purity
Solution Approach 1:
The patent employs inert atmosphere during calcination to produce calcium oxide with ≤1 ppm impurities, ensuring high therapeutic reliability for medical applications such as cancer treatment and antibacterial therapy. This maintains accessibility through standard production while achieving the purity levels necessary for reliable medical effectiveness.
Solution Approach 2:
The optimized calcination parameters (temperature, time, atmosphere) ensure consistent production of high purity calcium oxide with proven therapeutic effectiveness. The controlled process parameters guarantee batch-to-batch consistency, making the product reliable for medical applications while remaining accessible through conventional manufacturing infrastructure.
Data Source
AI summary
This invention is about calcium oxide. The invention relates more particularly to obtaining the calcium oxide with high purity and on the implementation.