Exhaust Treatment Component Cleaning With Oxyhydrogen Burnout
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Solution Overview
Problem
Existing methods for cleaning components of exhaust gas treatment systems, such as catalytic converters and diesel particulate filters, are inefficient, leaving uncleaned areas and are either slow or energy-intensive, failing to completely remove soot and ash deposits.
Innovation Solution
A method utilizing an oxyhydrogen burner and controlled suction system to heat and clean exhaust gas treatment components, with real-time temperature monitoring and controlled gas extraction, ensuring thorough burning-out of deposits at high temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional cleaning methods (flushing with heated cleaning agent) are used, then some soot particles are removed, but uncleaned areas remain and cleaning effectiveness is insufficient
Solution Approach 1:
The invention changes the temperature parameter from conventional low-temperature flushing (85°C) to high-temperature burning-out (850-1200°C), fundamentally transforming the cleaning mechanism from mechanical flushing to thermal combustion, thereby achieving complete removal of all deposit types including soot, ash, and organic residues
Solution Approach 2:
The invention introduces pure oxygen to the burning chamber, creating a strong oxidizing environment that accelerates the combustion of deposits. The oxygen-enriched atmosphere ensures complete oxidation of carbon-containing deposits, converting them to CO2 and H2O, and preventing formation of harmful byproducts
2Reliability
If baking or blowing-out methods are used to clean exhaust gas treatment components, then complete cleaning is achieved, but the process becomes very slow and energy-intensive
Solution Approach 1:
The invention employs periodic alternation between heating phases (burning-out deposits) and cooling/extraction phases (removing combustion products). This rhythmic cycle allows sustained high temperatures for complete cleaning while periodically removing heat and deposits, preventing thermal runaway and maintaining efficient processing speed
Solution Approach 2:
The invention continuously extracts combustion gases and loose deposits through a suction system during the burning-out process. This extraction prevents re-deposition, maintains oxygen supply to the combustion zone, and accelerates the overall cleaning rate by removing reaction products that would otherwise slow down the combustion process
3Reliability
If high temperature burning-out is applied to remove all deposits, then complete cleaning is achieved, but thermal damage to the component may occur
Solution Approach 1:
The invention incorporates temperature sensors positioned at multiple locations within the exhaust gas treatment component to provide real-time feedback on the thermal state. This feedback is used by the control system to dynamically adjust the heating power, ensuring temperatures remain within the safe range (850-1200°C) for complete deposit removal without exceeding the thermal tolerance of the substrate material
Solution Approach 2:
The invention applies a protective coating to the substrate before the burning-out process, or uses the substrate's own thermal mass and heat capacity as a buffer. This pre-established protection absorbs excess heat and prevents direct thermal damage to the substrate, allowing the use of higher temperatures for more effective cleaning
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 method achieves complete removal of soot, ash, and other deposits over the entire component area, ensuring efficient and uniform cleaning without thermal damage.
Implementation Method 1
concentrated burning-out of said pure oxyhydrogen gas mixture, by means of said oxyhydrogen burner and feeding a flame towards the front side of said component
Implementation Method 2
heat transfer from the front side of said component along the entire length of the channels by means of a controlled suction by a suction system
Implementation Method 3
provision of a pure oxyhydrogen gas mixture obtained from electrolysis of water in an electrolyser
Data Source
Figure 1
AI summary
The method for cleaning components of treated gas systems according to the invention is used for catalytic converters or filter elements for exhaust gases for gasoline and diesel vehicles, such as, for example, diesel particulate filters (DPF) and catalytic converters of the type CAT, COD, SCR. The method comprises the steps of analysis and pre-assessment of said treated component (1), and the subsequent cleaning thereof using an oxyhydrogen burner (2) heating entirely said treated component (1). The process is controlled by means of an exhaust gas extraction system comprising a fan (5) capable of measuring and regulating the gas flow.