Segmented Particulate Filter with Independent Regeneration

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Solution Overview

Problem

Existing flow devices for exhaust gas purification in internal combustion engines, particularly those using heavy oil or solid-loaded fuels, face challenges in being simple, reliable, and energy-efficient, especially in separating soot particles and regenerating flow segments.

Innovation Solution

A flow device with multiple segments and a regeneration system that uses a separate heating device to regenerate flow segments by reversing the gas flow direction, incorporating a fan and receiving device for ash separation and storage, and utilizing clean gas for energy efficiency, along with optional sonic or pulse cleaning methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a flow device is used for exhaust gas purification in internal combustion engines, then soot particles can be separated from combustion exhaust gas, but the device becomes complex and energy-consuming due to the need for continuous operation and regeneration

Engineering Contradiction:

Improvecontinuous operation reliabilityVSAvoiddevice structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The flow device is divided into multiple flow segments that can be operated independently. Each segment can be alternately used for cleaning and regeneration, allowing continuous operation while simplifying the regeneration process. The segmentation enables one segment to handle exhaust gas purification while another undergoes regeneration without requiring the entire device to be shut down or complex coordinated regeneration systems.

Inventive Principle:

Principle #1Segmentation

2Productivity

If a flow device separates soot particles from exhaust gas, then cleaning efficiency is improved, but energy consumption increases due to the need for heating and regenerating the flow segments

Engineering Contradiction:

Improvecleaning efficiencyVSAvoidenergy consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The flow device maintains continuous cleaning operation by having multiple flow segments that can be alternately used for cleaning and regeneration. While one segment is being regenerated, another segment continues to clean the exhaust gas, ensuring uninterrupted purification service and maintaining high productivity without continuous energy-intensive regeneration of the entire device.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The regeneration process utilizes parameter changes by switching between different temperature and flow conditions. During regeneration, the flow segment is heated to high temperatures to burn off accumulated soot, then cooled and returned to service. This parameter cycling enables effective regeneration while minimizing energy consumption by only heating the specific segment being regenerated rather than the entire device.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If the flow device is designed for simple operation, then ease of operation is improved, but the ability to regenerate flow segments effectively is reduced

Engineering Contradiction:

Improveoperational simplicityVSAvoidregeneration effectiveness

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

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 solution enables reliable and energy-efficient operation by regenerating flow segments independently while maintaining continuous cleaning, effectively removing impurities and ash, and preventing exhaust gas escape through controlled pressure and flow management.

Implementation Method 1

a heating device (116) for generating the hot gas flow

Methodology Applied

Scientific EffectCombustion: Combustion

Implementation Method 2

a fan (122) for driving the hot gas flow

Methodology Applied

Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 3

The receiving device preferably comprises a solids separator, in particular a cyclone, for separating impurities, in particular ash, from the gas stream

Methodology Applied

Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 4

for separating soot particles from combustion exhaust gas

Methodology Applied

Scientific EffectInertial impaction:

Data Source

PatentEP3528921B1Particulate filter and process of operating same

Publication Date: 2021.03.31 HUG ENG

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AI summary

The aim of the invention is to provide a flow device with a simple design which is reliable and energy efficient to operate. To achieve this, the flow device comprises the following: multiple flow segments, each of which has one or more flow bodies and through which the uncleaned gas stream can flow in a cleaning mode in order to remove pollutants, wherein said uncleaned gas can be supplied to the flow segments via an uncleaned gas supply and wherein an uncleaned gas stream that has been cleaned by means of the flow segments can be discharged by means of a clean gas discharge; a regeneration device for regenerating the flow segments, the regeneration device having a heating device which can be supplied with, in particular, clean gas from the clean gas discharge, in order to produce a hot gas stream.