High-Shear Emulsification Simulator with Thermal Expansion Seals
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Solution Overview
Problem
Current methods for simulating emulsification and demulsification in industrial processes fail to accurately replicate the high-shear, short-duration, and high-temperature conditions found in mix valves and pressure chokes, leading to unrealistic emulsion formation and separation results.
Innovation Solution
A small-scale, batch-wise device with an internally-threaded, transparent tube capable of withstanding high temperatures and pressures, featuring a sealed shaft and mixing blades, which is heated and inverted to simulate the conditions, allowing for realistic emulsification and demulsification under controlled temperature and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional glass bottles or jars are shaken to simulate emulsification, then the equipment is simple and easy to operate, but the simulation fails to replicate high-shear, short-duration conditions of industrial processes
Solution Approach 1:
The patent changes the key parameters of emulsification by implementing a high-speed rotating shaft (10,000-16,000 rpm) with mixing blades inside a sealed tube, transforming the low-shear, long-duration shaking of conventional bottles into high-shear, short-duration mixing that replicates industrial valve conditions. This parameter change resolves the contradiction by achieving accurate simulation while maintaining equipment simplicity.
2Temperature
If the mixing tube is heated to high temperatures to simulate process conditions, then the temperature realism is improved, but the sealing reliability deteriorates due to thermal expansion
Solution Approach 1:
The patent utilizes thermal expansion by making the externally-threaded closure (metal or plastic) have a higher coefficient of thermal expansion than the glass mixing tube. When heated to process temperatures (up to 220°C), the closure expands more than the tube, tightening the seal and preventing leakage. This resolves the contradiction by converting the potential problem of thermal expansion into a beneficial sealing mechanism.
3Stress or pressure
If the shaft is sealed gas-tight at both ends to maintain pressure, then the pressure containment is improved, but the device complexity increases
Solution Approach 1:
The patent implements self-service sealing where the rotating shaft seals against the tube wall through its own rotation and centrifugal force, and the closure seals against the tube through thermal expansion. The spring-loaded seals automatically engage and maintain sealing without external intervention. This resolves the contradiction by achieving reliable pressure containment through self-actuating sealing mechanisms rather than complex external sealing systems.
4Stress or pressure
If the closure is tightly sealed to hold pressure at high temperature, then the pressure containment is improved, but the ease of opening after cooling deteriorates
Solution Approach 1:
The patent applies thermal expansion differentially: during heating, the closure expands more than the tube to tighten the seal and hold pressure; during cooling, the closure contracts more than the tube to loosen the seal and enable easy opening. This resolves the contradiction by using the same thermal expansion principle to achieve both tight sealing during operation and easy opening after operation.
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 device effectively simulates the emulsification and demulsification processes, enabling the evaluation of chemical additives and operating parameters to optimize industrial processes by replicating the turbulent energy dissipation rate and phase separation characteristics of industrial processes.
Implementation Method 1
a low degree of turbulence for a long period of time is in no way equivalent, and indeed often has the opposite effect, as a high degree of turbulence for a short period of time
Implementation Method 2
Drop breakup and coalescence are known functions of the internal phase viscosity, the interfacial viscosity, and the interfacial tension
Implementation Method 3
heated to the temperature of the process and pressurized enough to prevent boiling
Implementation Method 4
pressurized enough to prevent boiling
Implementation Method 5
allowing the laden bubbles to grow, rise, and break into a trough at the top
Implementation Method 6
the turbulence is a known function of the external phase density and viscosity
Data Source
AI summary
A small-scale, batch-wise device to simulate high-shear, short-duration emulsification of fluids from various industrial processes at elevated temperatures and pressures for the purpose of determining the quality and stability of those emulsions under different conditions and with different additives. A threaded, transparent tube capable high temperature and pressure is fitted with a threaded bearing with a shaft sealed gas tight at two points with spring-loaded, internally-facing, open rings. A socket head on the external end of the shaft held on a high-speed motor-drive rotates mixing blades on the internal end of the shaft. Process fluids and additives are added to the tube with a vaporizing liquid. The tube is sealed, heated to the process temperature under pressure, then inverted onto the motor drive, by which the blades are rotated at high-speed for a short duration. The tube is righted and the emulsion observed over time at process temperature under pressure.