HFC-143 Azeotropic Refrigerant Composition for Reduced Ozone Depletion
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Solution Overview
Problem
Current compositions containing HFC-143 lack stability and high ozone depletion potential, and existing separation methods are inefficient for refrigerant mixtures.
Innovation Solution
A composition comprising HFC-143 combined with additional compounds such as HFO-1132a, HFO-1123, and others, forming an azeotropic or azeotrope-like mixture for improved stability and reduced ozone depletion potential, along with a method for separating components using distillation columns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If HFC-143 is used as a refrigerant or expansion agent, then it provides useful functional properties, but it has high ozone depletion potential and lacks stability
Solution Approach 1:
The patent combines HFC-143 with other compounds (such as HFO-1132a, HFO-1123, or other fluorocarbons) to create a mixed composition. This merging approach allows the mixture to achieve lower ozone depletion potential while the synergistic interaction between components provides enhanced stability, resolving the contradiction between reducing harmful effects and maintaining reliability.
Solution Approach 2:
The invention creates a composite refrigerant composition by combining HFC-143 with additional compounds in specific proportions. This composite material approach enables the mixture to exhibit properties that neither component possesses alone, specifically achieving both low ozone depletion potential and high stability simultaneously.
2Productivity
If conventional separation methods are used for refrigerant mixtures, then separation can be performed, but the process is inefficient
Solution Approach 1:
The patent utilizes azeotropic distillation, which exploits phase transition properties of the mixture. By forming an azeotropic mixture with specific boiling point characteristics, the separation process becomes more efficient as the phase transition behavior enables better separation of components, reducing both time and energy consumption compared to conventional methods.
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 composition exhibits enhanced stability and lower ozone depletion potential, enabling effective use as a refrigerant and intermediate in organic synthesis, with efficient separation of components through azeotropic distillation.
Implementation Method 1
forming an azeotropic or azeotrope-like mixture for improved stability and reduced ozone depletion potential, along with a method for separating components using distillation columns
Data Source
AI summary
Provided is a novel composition containing HFC-143. The composition contains HFC-143 and at least one additional compound selected from the group consisting of HFO-1132a, HFO-1123, HFC-143a, CTFE, HCFO-1131a, HFC-152a, HFC-152, HCFO-1131(E), HCFO-1131(Z), HFC-134a, HFC-161, HCFC-141, HCFC-123, HCFC-142, HCFC-142a, HCFO-1122, HCFO-1122a, HFO-1141, HCFC-21, HCFC-22, HFC-23, ethylene, and acetylene.