Resistive Thermal Reactor Control Using Catalyst Resistance Signals
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Solution Overview
Problem
Traditional thermal reactor systems face challenges with inefficient heat transfer and temperature control due to parabolic temperature profiles and large variations in catalyst temperature, leading to limited single-pass reactant conversion and low efficiency.
Innovation Solution
A system and method utilizing electrically-driven reactors with high surface area catalytic elements, leveraging resistance signals for precise control and degradation monitoring, enabling faster response times and more accurate temperature estimation without direct temperature measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional combustion heating is used to heat the reactor, then the reactor can be heated to required temperature, but large variations in catalyst temperature occur and heat transfer resistance increases
Solution Approach 1:
The patent replaces the mechanical/chemical combustion heating system with an electrical heating system. Electrical heating elements are integrated directly into the reactor structure, allowing precise control of heat generation and elimination of the parabolic temperature profile caused by combustion. This substitution enables uniform temperature distribution across the catalyst bed while maintaining the required heating temperature.
2Use of energy by moving object
If combustion chamber heats multiple components simultaneously, then energy utilization improves, but temperature control precision deteriorates
Solution Approach 1:
The patent divides the heating system into separate, independently controllable heating zones within the reactor. Each zone can be controlled individually through electrical heating elements, allowing precise temperature control in different regions while maintaining overall energy efficiency. This segmentation eliminates the temperature averaging effect that occurs when a single combustion chamber heats multiple components.
Solution Approach 2:
The patent implements feedback control systems with temperature sensors positioned throughout the reactor to monitor temperature distribution. The control system adjusts electrical heating power in real-time based on measured temperature deviations, maintaining precise temperature control while optimizing energy utilization through adaptive power distribution.
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 process control precision, reduces resistance to heat transfer, and allows for real-time monitoring of reactor health, improving single-pass reactant conversion and overall reactor efficiency.
Implementation Method 1
resistively heating a porous catalytic element (e.g., via Joule heating by passing an electric current therethrough)
Data Source
AI summary
The method can include receiving a baseline signal curve, operating a thermal reactor, measuring a signal, optionally determining a state (e.g., state of health) of the thermal reactor, and controlling the thermal reactor based on the signal. The method can include receiving (e.g., determining, measuring, etc.) a resistance-temperature and/or resistance-time curve; operating a thermal reactor comprising resistively heating a porous catalytic element; measuring an electrical signal (e.g., resistance, current, voltage, etc.) of the thermal reactor; optionally inferring a temperature of the thermal reactor based on the electrical signal and the resistance-temperature; and controlling the thermal reactor based on the electrical signal. The system can include one or more of a reaction module (e.g., an electrical coupler or electrode and catalytic element, etc.), inlet and outlet valves, power source, electrical feedthroughs (e.g., leads, supports, etc.), sensors, and computing system (e.g. controller).