Optoelectronic Gas Analysis Ionizer Deflection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Optoelectronic apparatuses for gas analysis face interference from high particle loads such as smoke and dust, which cause light absorption and scattering, making it difficult to differentiate between gas constituents and particle-induced absorption in industrial emission measurements.
Innovation Solution
An optoelectronic apparatus with an ionizer and ion acceleration apparatus, using electric or magnetic fields to ionize particles and deflect them away from the measurement volume, ensuring that only the gas constituents are measured, thereby reducing interference from particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If extractive gas analysis with filters is used, then particle interference is reduced, but device complexity and maintenance requirements increase
Solution Approach 1:
The harmful particles are extracted and removed from the gas flow through an electrostatic precipitator that ionizes particles and collects them on charged electrodes, separating the measurement path from particle interference without requiring complex filtration systems
Solution Approach 2:
The mechanical filter system is replaced by an electrostatic field-based particle removal system that uses ionization and electrostatic attraction to remove particles, eliminating the need for mechanical filters and their associated maintenance
2Ease of operation
If in-situ gas analysis is performed, then maintenance is reduced, but particle interference increases
Solution Approach 1:
The measurement system is segmented into a particle-free measurement zone and a particle-containing gas flow zone, with an electrostatic precipitator creating a localized clean path for optical measurement while the gas flow continues undisturbed
Solution Approach 2:
An electrostatic precipitator acts as an intermediary device that selectively removes particles from the gas flow before measurement without requiring extraction or modification of the gas flow path, enabling in-situ analysis with reduced particle interference
3Measurement precision
If electric filters are used to remove particles, then measurement accuracy improves, but energy consumption increases
Solution Approach 1:
The electrostatic precipitator applies ionization and electrostatic collection only to the extent necessary to achieve adequate particle removal for accurate measurement, using minimal energy to create localized electric fields in the measurement path rather than treating the entire gas flow
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 effectively reduces particle interference, allowing for accurate measurement of gas constituents without the need for additional gas treatment, maintaining in-situ analysis capabilities and enabling the measurement of particle concentration and size distribution.
Implementation Method 1
an ionizer is further provided which is arranged upstream of the optical measurement path. The ionizer causes an ionization of the inferring particles
Implementation Method 2
The ion acceleration apparatus and/or its electromagnetic fields is/are designed such that the generated ions experience a deflection
Implementation Method 3
the ion acceleration apparatus and/or its electromagnetic fields is/are designed such that the generated ions experience a deflection so that they can flow past the measurement volume
Data Source
AI summary
The invention relates to an improved optoelectronic apparatus for optical gas analysis by means of which the interfering influence of the particles contained in the gas is reduced with regard to the intended measurement. For this purpose the optoelectronic apparatus in accordance with the invention has a light transmitter and a light receiver which define an optical measurement path including a measurement volume between one another. The received signals of the light receiver can be evaluated in an evaluation unit, to ultimately obtain the desired information therefrom, for example, the concentration of a specific gas content. In accordance with the invention an ionizer is further provided which is arranged upstream of the optical measurement path. The ionizer causes an ionization of the undesirable particles, i.e. e.g. the dust particles, smoke particles or such like aerosols so that the ionized particles can be deflected by electric fields or also magnetic fields by means of an ion acceleration apparatus. In this respect the ion acceleration apparatus and/or its electromagnetic fields is/are aligned such that the generated ions experience a deflection to be able to flow past the measurement volume.