Droplet Separator with Vortex Guide and Grid Structure

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Solution Overview

Problem

Existing droplet separators are inefficient in separating small droplets from fast-flowing gas streams, particularly in high-velocity environments, due to insufficient centrifugal force and complex, costly constructions.

Innovation Solution

A droplet separator design featuring a turbulence-generating apparatus with guide surfaces that induce a rotational movement, utilizing grid-like structures and a vortex-generating apparatus to deflect gas flow, creating radial and tangential velocity components that enhance centrifugal separation, and a mat for droplet coalescence to increase droplet size for improved separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If guide surfaces are assembled from individual pieces of sheet metal to form a complex welded construction, then the droplet separator can achieve rotational flow for separation, but the device complexity and manufacturing cost increase

Engineering Contradiction:
Improveseparation efficiencyVSAvoidconstruction complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple individual guide surfaces into a single integrated sheet metal component with laser-cut openings, eliminating the need for complex welding assemblies while maintaining the rotational flow generation capability for droplet separation

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces traditional mechanical welding connections with laser cutting technology, allowing guide surfaces to be formed directly from sheet metal with precise geometric control, thereby simplifying manufacturing and reducing assembly complexity

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If the separator uses traditional turbulence-generating parts without grid structures, then the construction is simpler, but small droplets cannot be effectively separated from fast-flowing gas streams

Engineering Contradiction:
Improvedroplet separation efficiencyVSAvoidseparator structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent introduces grid-like structures at specific locations within the flow channel to create localized turbulence zones that enhance droplet separation, while maintaining simpler constructions in other areas of the separator

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The separator is divided into functional zones including turbulence-generating sections with guide surfaces and grid structures, and separation sections with collection channels, allowing each zone to perform its specific function optimally

Inventive Principle:
Principle #1Segmentation

3Manufacturing precision

If the droplet separator is designed with high centrifugal force generation, then small droplets can be separated more effectively, but the pressure drop resistance increases

Engineering Contradiction:
Improvedroplet separation efficiencyVSAvoidpressure drop resistance
Core Design Contradiction:
Manufacturing precisionVSStress or pressure

Solution Approach 1:

The patent employs dynamically optimized guide surface angles and grid structure configurations that generate sufficient centrifugal force for droplet separation while controlling flow resistance through careful geometric design

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent optimizes geometric parameters including guide surface inclination angles, grid opening sizes, and channel dimensions to achieve the right balance between centrifugal separation effectiveness and acceptable pressure drop across the separator

Inventive Principle:
Principle #35Parameter changes

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 design effectively separates small droplets by increasing the radial velocity component and utilizing coalescence to enhance droplet size, improving separation efficiency and reducing the overall height and complexity of the separator, while maintaining low pressure drop resistance.

Implementation Method 1

a turbulence-generating apparatus part, by means of which the droplet-laden gas is guided in the direction of a separating element. The flow is forced to change direction by means of the vortex-generating part of the apparatus, as a result of which the speed of the gas and liquid particles acquires a radial component

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

The separating element extends at least over part of the length of the flow channel and comprises a plurality of grid-like structures

Methodology Applied
Scientific EffectCoalescence: Coagulation

Data Source

PatentEP1930059B1Droplet separator
Publication Date: 2013.05.15 SULZER CHEMTECH AG
  • EP1930059B1 patent drawingFigure 1
  • EP1930059B1 patent drawingFigure 2
  • EP1930059B1 patent drawingFigure 3

AI summary

A droplet separator (10) comprises a flow channel (5) through which a droplet-laden gas can be guided and flow through along a main flow direction (6), wherein a vortex-generating apparatus part (1) is provided by means of which the droplet-laden gas can be guided towards a separation element (8). The separation element (8) is arranged essentially in a ring shape around the flow channel (5), wherein its inner surface, which has essentially the diameter of the flow channel (5), includes openings (15, 19) for the entry of the droplet-laden gas into the separation element. The separation element (8) extends at least over a portion of the length of the flow channel, and the separation element (8) comprises a plurality of grid-like structures (9).The vortex-generating apparatus part (1) is arranged inside the flow channel (5) and contains a guide surface (2), whereby at least part of the gas can be deflected from the main flow direction (6) towards the openings (15,19).