3D-Printed Smart Catalyst Support for In-Situ Temperature Control
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Solution Overview
Problem
Microreactor technology faces challenges in dynamically controlling localized reaction temperatures due to significant temperature gradients and limited effective temperature sensing methods, leading to the 'black box' dilemma in fine chemical engineering applications.
Innovation Solution
A smart catalyst support with a three-dimensional porous structure formed by multi-material 3D printing and selective carbonization, incorporating a thermoelectric phase, conductor phase, and structural phase, utilizing the Seebeck effect for temperature sensing and Joule heating for regulation, enabling real-time monitoring and control of the temperature field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heating rods are used for external heating, then heat can be supplied to the reaction zone, but significant temperature gradients occur within the reaction zone and localized temperature control cannot be achieved
Solution Approach 1:
The patent extracts the heating function from external heating rods and relocates it directly into the reaction zone by incorporating a heating element within the catalyst support structure. This allows heat to be generated at the source rather than transmitted from outside, eliminating the temperature gradients that plague external heating methods.
Solution Approach 2:
The catalyst support acts as an intermediary structure that simultaneously provides mechanical support, catalytic activity, and localized heating. By integrating the heating element within the porous catalyst support, the system achieves uniform heat distribution through the support's structure while maintaining catalytic function.
2Measurement precision
If invasive devices like thermocouples and thermistors are used for temperature measurement, then temperature data can be obtained, but the devices interfere with the actual reaction process and measurement deviation increases with scale
Solution Approach 1:
The patent replaces mechanical/invasive temperature sensing devices (thermocouples, thermistors) with an optical sensing system. Fiber optic sensors are used to measure temperature through non-contact means, eliminating the physical interference that traditional sensors cause in the reaction zone while maintaining measurement accuracy.
3Object-affected harmful factors
If fiber optic sensors are used for temperature sensing, then measurement interference is reduced, but chemical compatibility is poor, application temperature range is limited, and local heat transfer is affected
Solution Approach 1:
The patent utilizes the porous structure of the catalyst support to accommodate temperature sensing elements. The porous material allows for integration of sensors within the support matrix while maintaining the support's catalytic and heat transfer functions. The porous structure enables better thermal contact and chemical environment compatibility compared to solid fiber optic sensors.
4Loss of information
If multiple measurement points are used to reduce measurement distortion, then temperature field information improves, but the complexity of the measurement system increases
Solution Approach 1:
The patent combines multiple temperature sensing points into a single integrated sensing system embedded within the catalyst support. Rather than using separate measurement devices at multiple locations, the sensing elements are merged into the support structure itself, allowing simultaneous measurement at multiple points without proportionally increasing system complexity.
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
Enhances the dynamic controllability of chemical reactions by providing real-time temperature field monitoring and regulation, reducing temperature gradients, and achieving precise temperature control in microreactors.
Implementation Method 1
The temperature field sensing is realized by the combination of the thermoelectric phase and the conductor to form a thermocouple using the Seebeck effect
Implementation Method 2
The temperature field regulation is achieved by generating Joule heat through the input current of the conductor phase
Data Source
AI summary
A smart catalyst support with real-time temperature field monitoring and dynamic regulation in the reaction zone is provided. Specifically for a variety of different properties of the material composition of the three-dimensional porous structure; three-dimensional porous structure using multi-material 3D printing technology and selective carbonization process manufacturing and forming; the three-dimensional porous structure consists of three parts: thermoelectric phase, conductor phase and structural phase, responsible for temperature field perception, temperature field regulation and electrical isolation, respectively; temperature field sensing is realized by the combination of thermoelectric phase and conductor to form a thermocouple using the Seebeck effect; temperature field regulation is realized by generating joule heat to the input current of the conductor phase; the temperature field sensing and temperature field regulation process are interconnected from electrical isolation by structural phase, using the insulation properties of the structural phase to achieve.