Multi-Layer Filtration System for Droplet Separation

Solution Overview

Problem

Existing filtration systems face challenges in separating liquid fractions in droplet form from gaseous material streams, as droplets coagulate in filter layers, leading to impassable cavities and high pressure losses, requiring large filter volumes or costly replacements, especially with viscous liquids.

Innovation Solution

A filtration system with a multi-layered filter insert where at least two filter layers have parallel boundary surfaces acting as separation planes, with fiber filaments oriented 40-55% parallel to the flow direction, and integrated drainage elements to manage liquid discharge, reducing pressure loss and extending filter operation time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If high-volume filter inserts are used to achieve sufficiently high filter service life, then filter operation time is extended, but system dimensions and costs increase

Engineering Contradiction:

Improvefilter service lifeVSAvoidfilter volume

Core Design Contradiction:

Duration of action of stationary objectVSVolume of stationary object

Solution Approach 1:

The filter insert is divided into multiple filter layers with different pore sizes arranged in sequence. Coarse filter layers are positioned before fine filter layers to capture larger droplets first, then progressively finer layers capture smaller droplets. This segmentation allows each layer to be optimized for its specific function, achieving high separation efficiency without requiring excessive filter volume.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the filter insert have different structural characteristics tailored to local requirements. The coarse filter layers have larger pores suitable for capturing bigger droplets, while fine filter layers have smaller pores for capturing finer droplets. This local optimization of filter structure allows efficient use of filter volume across different stages of the filtration process.

Inventive Principle:

Principle #3Local quality

2Reliability

If viscous liquids are separated from gaseous material streams, then separation effectiveness is achieved, but droplets coagulate in filter layers forming impassable sectors

Engineering Contradiction:

Improveseparation effectivenessVSAvoidliquid coagulation blocking cavities

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The filter insert is divided into multiple filter layers with different pore sizes arranged in sequence. Coarse filter layers are positioned before fine filter layers to capture larger droplets first, then progressively finer layers capture smaller droplets. This segmentation allows each layer to be optimized for its specific function, achieving high separation efficiency without requiring excessive filter volume.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of using a single fine-filter structure that easily blocks from liquid coagulation, the patent inverts the conventional approach by placing coarse filter layers before fine filter layers. This reverse sequencing allows liquid to be progressively captured without overwhelming the fine filter structure, preventing premature blocking while maintaining separation effectiveness.

Inventive Principle:

Principle #13The other way round (Inversion)

3Productivity

If fine-meshed filter layers are used to separate small droplets, then separation rate increases, but liquid discharge becomes extremely difficult and pressure loss increases

Engineering Contradiction:

Improveseparation rateVSAvoidliquid discharge difficulty

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The filter insert is divided into multiple filter layers with different pore sizes arranged in sequence. Coarse filter layers are positioned before fine filter layers to capture larger droplets first, then progressively finer layers capture smaller droplets. This segmentation allows each layer to be optimized for its specific function, achieving high separation efficiency without requiring excessive filter volume.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Coarse filter layers are positioned upstream to perform preliminary filtration by capturing larger droplets before the gas stream reaches the fine filter layers. This preliminary action removes the bulk of liquid content that would otherwise quickly saturate and block the fine filter layers, extending their operational life and maintaining ease of liquid discharge.

Inventive Principle:

Principle #10Preliminary action

4Reliability

If filter layers are made densely packed to improve separation efficiency, then separation effectiveness increases, but liquid discharge becomes more difficult

Engineering Contradiction:

Improveseparation effectivenessVSAvoidliquid discharge difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The filter insert is divided into multiple filter layers with different pore sizes arranged in sequence. Coarse filter layers are positioned before fine filter layers to capture larger droplets first, then progressively finer layers capture smaller droplets. This segmentation allows each layer to be optimized for its specific function, achieving high separation efficiency without requiring excessive filter volume.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the filter insert have different structural characteristics tailored to local requirements. The coarse filter layers have larger pores suitable for capturing bigger droplets and facilitating liquid discharge, while fine filter layers have smaller pores for capturing finer droplets. This local optimization balances separation effectiveness with liquid discharge capability across different stages of filtration.

Inventive Principle:

Principle #3Local quality

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 configuration achieves high separation rates with minimal pressure loss and extended filter operation time, while maintaining separation efficiency and reducing system complexity.

Implementation Method 1

a filtration system for separating accompanying substances, present in liquid, droplet or mist form, from a gaseous material stream

Methodology Applied

Scientific EffectPhysical filtration: Filter (physical)

Implementation Method 2

integrated drainage elements to manage liquid discharge

Methodology Applied

Scientific EffectGravity drainage: Gravitation

Data Source

PatentUS9272236B2Filtration system

Publication Date: 2016.03.01 INSTITUTE FOR TOURISM STUDIES

AI summary

A filtration system for separating accompanying substances, present in liquid, droplet or mist form, from a gaseous material stream, comprisinga housing, in which there is arranged a filter insert,wherein the housing has an inlet and an outlet for said material stream,wherein the filter insert comprises at least two filter layers,wherein one boundary surface of the first filter layer is essentially in parallel with a boundary surface of the second filter layer,wherein at least one boundary surface forms a barrier for said material stream.