Vertical Pipe Pressure Equilibrium for Liquid-Liquid Extraction Interface Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid-liquid extraction columns face challenges in precisely maintaining the interface level between fluids of different specific gravities due to complex control systems, electromagnetic interference, and increased maintenance demands, leading to inefficiencies and shortened control valve lifespan.
Innovation Solution
A device using a vertical pipe outside the extraction column to achieve pressure equilibrium between the internal pressures of the column and the pipe, allowing for simple control of the interface level by balancing pressures and adjusting fluid levels within the pipe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a control valve is used to maintain the interface level between two fluids, then the interface level can be controlled, but the control system becomes complex and maintenance requirements increase
Solution Approach 1:
The patent extracts the control function from the main extraction column by introducing a separate vertical pipe system. The vertical pipe is connected to the lower tank and extends upward, allowing the interface level to be controlled through the pipe's fluid level rather than directly through complex control valves in the main column. This separates the measurement and control functions into a distinct, simpler subsystem.
Solution Approach 2:
The vertical pipe acts as an intermediary element between the lower tank and the interface level control system. By using the fluid level in the vertical pipe as an indicator and control mechanism, the patent avoids direct complex sensing and control within the main extraction column, simplifying the overall control architecture.
2Measurement precision
If complex control systems are used to maintain interface level, then control precision improves, but reliability decreases due to electromagnetic interference and component failure
Solution Approach 1:
The vertical pipe system is essentially self-regulating. The interface level in the lower tank automatically corresponds to the fluid level in the vertical pipe due to pressure equilibrium, eliminating the need for active control mechanisms, sensors, or power sources. This passive self-regulating mechanism greatly enhances reliability by removing vulnerable electronic and mechanical control components.
3Measurement precision
If control valves are continuously adjusted to maintain interface level, then interface control is achieved, but the control valve lifespan is shortened
Solution Approach 1:
The patent removes the control valve from the interface level control function entirely. Instead of using a control valve that requires continuous adjustment, the system uses the vertical pipe's passive fluid level indication, which requires no moving parts or active control, thereby eliminating wear and extending component lifespan.
4Measurement precision
If conventional control methods are used, then interface level can be monitored, but maintenance demands increase
Solution Approach 1:
The vertical pipe system requires no maintenance because it has no moving parts, sensors, or electronic components. The interface level is visually indicated by the fluid level in the vertical pipe, and control is achieved by simple adjustments to the pipe's configuration or connection, eliminating the need for complex maintenance 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
This approach enables steady maintenance of the interface level with a reduced need for complex control systems and maintenance, enhancing operational efficiency and extending the life of control components.
Implementation Method 1
a vertical pipe 100 provided outside the extraction column 1, and enabling an internal pressure of the extraction column 1 and an internal pressure of the vertical pipe 100 to be balanced with each other
Implementation Method 2
the level of an interface between fluids having different specific gravities in an upper tank 20
Data Source
AI summary
Disclosed is a device for controlling an interface of a liquid-liquid extraction column using pressure equilibrium. The device includes a vertical pipe provided beside an extraction column parallel thereto. The device enables internal pressures of the extraction column and the vertical pipe to be balanced with each other by moving fluid from the extraction column into the vertical pipe. Therefore, the device can maintain the level of an interface between fluids having different specific gravities with a simple control system. The device includes the liquid-liquid extraction column having a column body; and upper and lower tanks having respective inlet pipes and respective outlet pipes, wherein a pipeline is connected to the outlet pipe of the lower tank, and the internal pressures are balanced by controlling a level of the fluid in the pipeline, thereby maintaining the level of the interface.