Infrared Camera Bed Detection in Rotary Reactors
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Solution Overview
Problem
Current methods lack the ability to monitor and optimize endothermic processes in rotary tube reactors, as they cannot provide real-time data on the chemical-physical properties of the material bed, which are crucial for process control and product quality, due to the similarity in temperature distribution between the material bed and gas phase in these processes.
Innovation Solution
A method utilizing a sequence of infrared images to differentiate and evaluate the temperature dynamics of the material bed and gas phase, allowing for online detection and regulation of the material bed properties through image processing algorithms, which distinguishes between the two phases based on their thermal variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If infrared cameras are used to monitor temperature distribution in rotary tube reactors, then real-time temperature data can be obtained, but the material bed and gas phase cannot be distinguished in endothermic processes due to similar temperature distributions
Solution Approach 1:
The patent applies dynamics by analyzing temporal variations in temperature data. Instead of relying on static temperature differences, the method captures time-series temperature measurements and evaluates dynamic behavior patterns that differ between material bed and gas phase, enabling phase differentiation despite similar instantaneous temperature distributions.
Solution Approach 2:
The patent changes the measurement parameter from static temperature to dynamic temperature variation. By monitoring how temperature changes over time rather than just the temperature value itself, the method reveals distinct behavioral patterns that allow differentiation between material bed and gas phase regions.
2Measurement precision
If regular laboratory sampling is used to determine material bed properties, then chemical-physical properties can be analyzed, but real-time process optimization is prevented due to time delays
Solution Approach 1:
The patent replaces mechanical sampling and laboratory analysis with a non-contact infrared measurement system. This substitution eliminates the time-consuming physical sampling, transport, and laboratory analysis steps, enabling real-time monitoring and immediate process optimization.
Solution Approach 2:
The patent creates a virtual copy of the material bed properties through infrared temperature field measurements and mathematical evaluation. Instead of physically sampling the material, the system captures thermal radiation patterns and processes them to derive material bed properties, enabling real-time analysis without physical contact or time delays.
3Loss of information
If image processing algorithms are used to filter particles and flames from infrared images, then combustion bed visibility is improved, but the method is not applicable to endothermic processes without combustion
Solution Approach 1:
The patent fundamentally changes the evaluation parameter from visual image filtering to dynamic temperature variation analysis. This parameter change makes the method universally applicable to both exothermic combustion processes and endothermic processes, as it relies on thermal dynamics rather than visual characteristics specific to combustion.
Solution Approach 2:
Instead of filtering out disturbances from the image as in conventional methods, the patent inverts the approach by using the temperature field dynamics themselves as the distinguishing feature. Rather than removing particles and flames to see the combustion bed, the method directly analyzes temporal temperature patterns to identify material bed regions regardless of combustion presence.
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
Enables real-time monitoring and control of endothermic processes in rotary tube reactors by accurately determining the material bed properties, such as position, shape, and discharge behavior, thereby optimizing process conditions and preventing agglomeration issues that affect yield and product quality.
Implementation Method 1
a sequence of successively recorded infrared images is created using an infrared camera
Implementation Method 2
the differences in the temperature dynamics of the bed of material and the gas phase are determined from this
Data Source
Figure 1~3
Figure 4~6
AI summary
To determine and evaluate the properties of the material bed in a rotary reactor, during continuous reactions, an infra red camera takes a sequence of infra red images to show differences in the temperature dynamics in the material bed (2) and the gas phase (3). The camera also registers the position and shape of the bed in the reactor.