Methyl fluoride production method
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Solution Overview
Problem
Current methods for producing methyl fluoride require complex separation processes involving cooling and washing to isolate methyl fluoride from acid fluoride, leading to inefficient operations and industrial waste production.
Innovation Solution
A method involving pyrolysis of a starting compound to produce a mixed gas, followed by direct rectification of the gas mixture to selectively obtain methyl fluoride, eliminating the need for pre-separation steps and reducing waste generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cooling and washing methods are used to separate methyl fluoride from acid fluoride, then separation can be achieved, but the process becomes complex and produces industrial waste
Solution Approach 1:
The invention extracts and removes the acid fluoride component from the mixed gas through selective absorption using alkaline solution, isolating it from the methyl fluoride. This extraction approach simplifies the overall process by directly removing the problematic component rather than using complex cooling and washing sequences, thereby reducing process complexity while maintaining separation efficiency
Solution Approach 2:
The invention changes the chemical parameter of the absorption medium by using alkaline solution instead of water or neutral solutions. This parameter change enables selective reaction with acid fluoride through neutralization, enhancing separation efficiency while simplifying the process by eliminating the need for multiple washing stages and reducing waste production
2Manufacturing precision
If water or aqueous alkaline solution is used to dissolve acid fluoride, then acid fluoride removal is achieved, but industrial waste is produced
Solution Approach 1:
The invention changes the chemical composition parameter of the absorption medium by using alkaline solution with specific pH and composition. This parameter optimization enables complete neutralization of acid fluoride, converting it into non-harmful salts that can be easily disposed of or reused, thereby eliminating industrial waste while maintaining high removal efficiency
Solution Approach 2:
The invention converts the harmful acid fluoride component into beneficial or neutral substances through alkaline neutralization. The acid fluoride reacts with the alkaline solution to form harmless salts and water, transforming a waste problem into a beneficial byproduct that can be potentially reused or safely disposed of, thus eliminating industrial waste production
3Manufacturing precision
If rectification operation is performed on mixed gas containing large amount of methyl fluoride, then purification is achieved, but the process becomes more complex
Solution Approach 1:
The invention performs preliminary removal of acid fluoride using alkaline absorption before the rectification step. This preliminary action eliminates the main impurity that would interfere with rectification, allowing the rectification process to focus solely on methyl fluoride purification. This sequential approach reduces overall process complexity while achieving high purity methyl fluoride
Solution Approach 2:
The invention segments the purification process into two distinct stages: first, chemical removal of acid fluoride through alkaline absorption; second, physical purification of methyl fluoride through rectification. This segmentation allows each stage to be optimized independently, simplifying the overall process design and operation while achieving the desired purification outcome
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 approach simplifies the purification process, enhances the efficiency of methyl fluoride separation, and avoids the production of industrial waste by directly rectifying the mixed gas, resulting in high-purity methyl fluoride with reduced operational complexity.
Implementation Method 1
pyrolyzing a starting compound in a gas phase to thereby obtain a mixed gas containing methyl fluoride and acid fluoride
Implementation Method 2
rectifying the mixed gas obtained in step (1) to thereby obtain methyl fluoride
Data Source
AI summary
A method for producing methyl fluoride, comprising the steps of: (1) pyrolyzing a starting compound in a gas phase to thereby obtain a mixed gas containing methyl fluoride and acid fluoride; and (2) rectifying the mixed gas obtained in step (1) to thereby obtain methyl fluoride.