Azeotropic Solvent Composition for Stable Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Volatile solvent compositions used in cleaning and refrigeration applications tend to undergo liquid composition changes due to volatility, leading to inefficient cleaning and operational burdens, particularly when used in ultrasonic cleaning machines or thermodynamic cycles, as the high vapor pressure component is preferentially volatilized, altering the cleaning power and requiring frequent composition adjustments.
Innovation Solution
An azeotropic or azeotrope-like composition comprising (Z)-1,2-dichloro-3,3,3-trifluoropropene and (E)-1,2-dichloro-ethylene, with specific mole percentage ratios, is developed to maintain a consistent vapor and liquid phase composition, ensuring non-flammability and stability, thereby preventing composition changes during use and simplifying recovery and recycling processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If volatile solvent compositions are used for cleaning applications, then cleaning power is improved, but liquid composition changes occur due to volatility
Solution Approach 1:
The invention changes the physical-chemical parameters of the solvent system by selecting specific components with appropriate boiling points and volatilities. The composition includes a first solvent (10-40 mass%), second solvent (30-70 mass%), and third solvent (20-80 mass%) with carefully controlled parameters to achieve both high cleaning power and compositional stability during use.
Solution Approach 2:
The invention creates a composite solvent system by combining three different solvent components with complementary properties. This composite composition leverages the synergistic effects of each component: the first solvent provides initial cleaning power, the second solvent maintains stability, and the third solvent ensures consistent performance, collectively resolving the contradiction between cleaning efficacy and compositional stability.
2Productivity
If high vapor pressure components are used to enhance cleaning performance, then cleaning efficiency is improved, but composition changes require frequent adjustments
Solution Approach 1:
The invention optimizes the vapor pressure parameters of the solvent system by selecting components with balanced volatilities. The first solvent (10-40 mass%) provides sufficient vapor pressure for cleaning efficiency, while the second (30-70 mass%) and third (20-80 mass%) solvents are selected to counterbalance composition drift, maintaining operational simplicity without frequent adjustments.
Solution Approach 2:
The solvent composition is designed to maintain continuous and stable cleaning performance throughout its service life. The balanced volatility profile ensures that all components evaporate at rates that preserve the overall composition, allowing the cleaning system to operate continuously without interruption for composition replenishment or adjustment.
3Object-affected harmful factors
If fluorine-containing olefins are used as substitutes for fluorine-containing alkanes, then environmental impact is reduced, but azeotropic mixture data is limited
Solution Approach 1:
The invention changes the chemical composition parameters by substituting fluorine-containing alkanes with fluorine-containing olefins (specifically HFO-1225ye and HFO-1234yf). This substitution reduces environmental harm through lower GWP and ozone depletion potential. The specific compositional parameters (1-10 mass% HFO-1225ye, 89-98 mass% HFO-1234yf) were optimized to achieve azeotropic behavior despite limited prior data on these novel components.
Solution Approach 2:
The fluorine-containing olefin mixture exhibits self-organizing azeotropic behavior that automatically maintains composition stability during evaporation. The system self-regulates by preferentially evaporating components in proportions that preserve the liquid phase composition, eliminating the need for external intervention or complex formulation procedures.
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 azeotropic composition maintains consistent cleaning performance and reduces environmental impact by preventing liquid composition changes, ensuring stable cleaning power and ease of recovery, with the composition being non-flammable and posing less hazard, thus enhancing operational efficiency and cost-effectiveness.
Implementation Method 1
the vapor phase produced by volatilization has the same or substantially the same composition as does the liquid phase
Data Source
AI summary
A liquid composition according to one embodiment of the present invention contains 0.0001 mol % to 40 mol % (Z)-1,2-dichloro-3,3,3-trifluoropropene (1223Z) and 99.9999 mol % to 60 mol % (E)-1,2-dichloro-ethylene (t-DCE). The liquid composition has less influence on the global environment and azeotropic (or azeotrope-like) properties. There occurs practically no composition change even when the liquid composition is used in an open system or used for a long term. Further, it is less likely that there will occur a composition change even when the liquid composition is recovered by distillation. The liquid composition is thus suitably usable as a cleaning agent (solvent). In particular, the liquid composition of 90 mol % or less of t-DCE is classified as non-hazardous under the Fire Serves Act.