Nozzle Centrifuge Interface Layer Control via Heavy Phase Flow Monitoring
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Solution Overview
Problem
Nozzle centrifuges face challenges in maintaining the interface layer between light and heavy phases during separation, leading to suboptimal separation results due to uncontrollable heavy liquid discharge and nozzle wear, especially in processes like oil recovery from tar sands, where existing control systems are complex, costly, and inefficient.
Innovation Solution
A sensor is placed in the flow path of the heavy phase outlet to monitor the flow rate and adjust the supply of additional heavy phase, ensuring the interface layer is maintained within a predetermined range, reducing water consumption and erosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional heavy phase is continuously supplied to compensate for nozzle wear and uncontrollable discharge, then the interface layer position is maintained, but water consumption and power consumption increase
Solution Approach 1:
A sensor monitors the actual flow rate of heavy phase discharge and provides feedback to a control unit. The control unit adjusts the supply of additional heavy phase based on this feedback, ensuring the interface layer remains at the desired position while minimizing unnecessary water consumption and power usage.
2Manufacturing precision
If complex control equipment with pressure vessels is used to maintain interface layer position, then separation precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical control systems (pressure vessels, continuous pressure control mechanisms) with a simpler electronic control system comprising a flow rate sensor and a control unit that regulates the additional heavy phase supply based on monitored flow conditions.
3Device complexity
If nozzle centrifuge operates without interface layer control, then device simplicity is maintained, but separation efficiency deteriorates
Solution Approach 1:
The system monitors its own operating conditions through the flow rate sensor and automatically adjusts the additional heavy phase supply to maintain optimal interface layer position, enabling self-regulation without complex external control systems.
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 provides precise control of the interface layer, minimizing water waste and power consumption, and improving separation efficiency by directly responding to the monitored flow rate, thus maintaining optimal separation results.
Implementation Method 1
a sensor is arranged in the flow path of the heavy phase leaving the centrifuge for monitoring the magnitude of the flow
Implementation Method 2
a three-phase nozzle centrifuge for separating a light phase having a relatively low density, a heavy phase having a relatively high density and a solid phase from a mixture containing these three phases
Data Source
AI summary
Device for monitoring and adjusting, in particular for fixing and securing, the radial position of an interface layer in a nozzle centrifuge for separating a light phase having a relatively low density and a heavy phase having a relatively high density from a mixture containing these two liquids and a solid, the nozzle centrifuge including a rotor 1-3 which is rotatable around a rotational axis R and which forms an inlet 9 for said mixture, a separating chamber 7 communicating with said inlet 9 and having a radially inner part 7a and a radially outer part 7b, nozzles 12 at the separating chamber distributed around the rotational axis R for throwing out the heavy phase and the solid, an outlet 13a, 13b, 14 for discharging the light phase, an overflow outlet 19 being radially delimited by a cover or level ring 20 for discharging the heavy phase, and an inlet 9; 25, 26 for supplying additional heavy phase to the centrifuge, characterized in that a sensor 24 is arranged in the flow path of the heavy phase 23 leaving the centrifuge for monitoring the magnitude of the flow and transmitting a corresponding signal such that the supply of additional heavy phase via the inlet 9 or 25, 26 can be adjusted in reply to the signal.