Cyclone Pre-Separator for Vane Diffuser Capacity
Solution Overview
Problem
Existing vane diffusers are limited in capacity and separation efficiency when handling gas/liquid/particulate mixtures, leading to overloading and reduced separation quality, as they struggle to effectively separate gas and liquid/particulate phases in high-flow conditions.
Innovation Solution
Incorporating a cyclone pre-separator that uses centrifugal separation to pre-separate the gas/liquid/particulate mixture into lighter and heavier fractions before the vane diffuser, increasing the capacity and separation efficiency by reducing the load on the vane diffuser and enhancing subsequent separation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional vane diffuser is used for separating gas/liquid/particulate mixtures, then the structure remains simple and maintenance-free, but the capacity and separation efficiency are limited when handling high-flow conditions
Solution Approach 1:
The vane diffuser is segmented into multiple functional zones: an inlet zone with curved vanes for initial flow distribution, a separation zone with straight vanes for gravity-based separation, and outlets positioned at different heights. This segmentation allows each zone to perform a specific separation function, increasing overall capacity and efficiency without proportionally increasing complexity
Solution Approach 2:
The patent transitions from conventional two-dimensional planar vanes to three-dimensional curved vanes with specific geometric profiles. The curved vanes create spiral flow patterns that utilize centrifugal forces in addition to gravity, adding a rotational dimension to the separation process and significantly enhancing capacity for handling gas/liquid/particulate mixtures
2Productivity
If the vane diffuser handles maximum flow rates, then productivity increases, but liquid and particles are drawn up to the upward zone reducing separation quality
Solution Approach 1:
The curved vanes at the inlet perform preliminary separation by creating spiral flow that throws heavier liquid and particulate matter toward the outer walls before the mixture enters the main separation zone. This preliminary action reduces the load on subsequent separation stages, allowing higher overall flow rates to be handled while maintaining separation quality
Solution Approach 2:
The vane diffuser utilizes dynamic spiral flow patterns created by the curved vanes, where the flow velocity and direction continuously change as mixture moves through the separator. This dynamic flow regime enhances separation efficiency across a wider range of flow rates compared to static separation mechanisms
3Quantity of substance
If flow dividers are overloaded beyond maximum capacity, then more gas can be processed, but significant volumes of liquid and particles are drawn up into the upward zone
Solution Approach 1:
The curved vanes generate centrifugal forces that act as a counterweight to gravity, creating an outward radial flow component that prevents liquid and particles from being drawn upward against the gas flow. This counteracting force allows the separator to handle higher gas volumes without compromising separation effectiveness
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 cyclone pre-separator increases the maximum volume handling capacity of the vane diffuser and improves separation quality by reducing the average particle size of liquids, minimizing the risk of overloading downstream separation equipment, and maintaining a compact, low-maintenance design.
Implementation Method 1
The pre-separation of the single gas/liquid/particulate-mixture flow in the cyclone pre-separator into two different material fractions located in a central zone and an outer annular zone is realised by centrifugal separation
Implementation Method 2
This is realised by diverting the direction of the inflowing pre-separated mixture by vanes (normally about 90 degrees in two horizontal directions)
Implementation Method 3
The initial separation process in the separator is realised by gravity. Larger droplets and particles will fall down into a reservoir in the lower part of the separator
Data Source
AI summary
The invention relates to a vane diffuser for separating a gas/liquid/particulate-mixture flow in a gas phase fraction and a liquid/particulate phase fraction, comprising: a distribution chamber holding a plurality of curved vanes and an inlet for the gas/liquid/particulate-mixture wherein the vane diffuser also comprises a cyclone pre-separator located before the distribution chamber. The invention also relates to a method for separating a gas/liquid/particulate-mixture.