In-Line Air Separator for Eductor Systems
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Solution Overview
Problem
Conventional eductor systems fail to separate water from entrained air downstream, leading to increased hydraulic force and the need for additional equipment like holding tanks to manage the air-liquid mixture.
Innovation Solution
An in-line two-phase separator is integrated downstream of the eductor, utilizing changes in velocity and pressure, along with internal baffles, to separate air from water, thereby eliminating the need for a separate fluid discharge tank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional eductor systems are used without air separation, then the system structure is simple, but air-entrained water exits with increased hydraulic force requiring additional equipment
Solution Approach 1:
The patent extracts and removes air from the water stream using a separator device positioned downstream of the eductor. The separator isolates the air separation function from the mixing function, allowing air to be removed while water continues to the discharge point, thereby reducing hydraulic force without complicating the eductor itself
Solution Approach 2:
The separator acts as an intermediary device between the eductor and the discharge point. It mediates the air-entrained water stream by separating the air phase from the liquid phase, allowing the water to be discharged with reduced hydraulic force while the air is vented separately
2Device complexity
If air is not separated from water downstream, then no additional equipment is needed, but holding tanks are required to manage air-liquid mixture
Solution Approach 1:
The separator extracts air from the water stream, eliminating the need for holding tanks that would otherwise be required to manage air-liquid mixtures. By removing air at the point of separation, the system avoids the operational complexity of managing air pockets in holding tanks
3Force
If in-line separator is integrated downstream, then air is effectively removed reducing hydraulic force, but device complexity increases
Solution Approach 1:
The separator utilizes pneumatic and hydraulic principles to separate air from water. By exploiting the density difference between air and water, the device uses flow dynamics and pressure changes to achieve separation without mechanical moving parts, reducing complexity while effectively reducing hydraulic force
Solution Approach 2:
The separator changes physical parameters of the flowing stream, including velocity, pressure, and flow direction, to facilitate air-water separation. These parameter changes occur naturally through the separator's geometry, allowing effective air removal without adding complex control mechanisms
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 in-line separator effectively removes entrained air, reducing hydraulic force and allowing direct discharge into a pump suction or mixing tank, thereby reducing space requirements, operational power, and maintenance needs.
Implementation Method 1
utilizing changes in velocity and pressure, along with internal baffles, to separate air from water
Implementation Method 2
An in-line two-phase separator is integrated downstream of the eductor
Implementation Method 3
The accelerated water flow in the venturi section creates a vacuum due to the principle of the Venturi effect. The vacuum created by the venturi effect pulls the powder into the eductor
Implementation Method 4
the entrained air travels with the water powder mixture to the discharge outlet
Data Source
AI summary
A gas-liquid separator is described, for use in sequence with an eductor or other mechanism for mixing dry chemicals into a carrier fluid such as water, where such mechanisms often entrain air into the fluid. The separator comprises an inlet port directing fluid towards a turbulent zone (created by an internal baffle with at least one gap at the bottom). The gas and liquid are separated in the turbulent zone, and collected by outlets positioned above and below the gap in the baffle, respectively.