LPG Reforming Combustion Control via Flame Temperature Feedback
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Solution Overview
Problem
The LPG reforming system faces challenges in maintaining optimal combustion efficiency and minimizing pollutant discharge due to varying compositions of fuel gas, which requires precise control of air flow rates to ensure complete combustion.
Innovation Solution
A combustion control apparatus and method that includes a burner, a flame temperature analyzer, an air flow rate calculator, and an air flow rate controller to determine and adjust the air flow rate for maximum flame temperature, ensuring optimal air flow for complete combustion, even with changes in fuel gas composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fuel gas composition varies due to seasonal and supplier changes, then the combustion efficiency decreases and pollutant discharge increases, but the air flow rate control becomes more difficult
Solution Approach 1:
The system uses a flame temperature analyzer to continuously monitor the actual flame temperature and feeds this information back to the air flow rate controller. The controller adjusts the air flow rate based on the deviation between actual and target flame temperatures, creating a closed-loop control system that automatically adapts to fuel gas composition changes and maintains optimal combustion efficiency.
Solution Approach 2:
The system dynamically changes the air flow rate parameter in response to varying fuel gas composition. By continuously adjusting the air flow rate based on real-time flame temperature measurements, the system adapts to different fuel conditions (seasonal and supplier variations) and maintains optimal combustion parameters throughout.
2Object-generated harmful factors
If the air flow rate is not precisely controlled, then complete combustion cannot be achieved, but increasing control precision requires more complex control systems
Solution Approach 1:
The system employs a feedback control mechanism where the flame temperature analyzer continuously measures the actual flame temperature and the air flow rate controller adjusts the air flow rate based on the deviation from the target temperature. This closed-loop approach achieves precise control of air flow rate for complete combustion without requiring overly complex control systems.
Solution Approach 2:
The system replaces complex mechanical flow control mechanisms with an automated control system that uses electrical signals from the flame temperature analyzer to adjust the air flow rate. This substitution simplifies the overall control architecture while achieving precise control for minimizing pollutant discharge.
3Productivity
If manual adjustment of air flow rate is used, then the system is simpler to operate, but the response time to composition changes is slow and combustion efficiency is reduced
Solution Approach 1:
The system performs self-adjustment of the air flow rate automatically based on real-time flame temperature measurements. The air flow rate controller continuously monitors the flame temperature and autonomously modifies the air flow rate to maintain optimal combustion conditions, eliminating the need for manual intervention while maintaining high combustion efficiency.
Solution Approach 2:
The closed-loop feedback system automatically responds to fuel gas composition changes by continuously monitoring flame temperature and adjusting air flow rate in real-time. This eliminates manual adjustment delays and maintains optimal combustion efficiency without complicating operation, as the system manages itself autonomously.
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
This solution maximizes combustion efficiency, reduces operational costs, and minimizes pollutant discharge from incomplete combustion by automatically adjusting air flow rates in response to changes in fuel gas composition.
Implementation Method 1
a flame temperature analyzer configured to analyze a flame temperature of the burner through measurement
Implementation Method 2
combusting the same using a burner... thermal energy generated due to combustion of the off-gas
Data Source
AI summary
A combustion control apparatus of an Liquefied Petroleum Gas (LPG) reforming system and a method for controlling the same may include a burner provided to supply heat to a reformer, a flame temperature analyzer configured to analyze a flame temperature of the burner, an air flow rate calculator configured to determine an initial value of a flow rate of air to be supplied to the burner depending on a flow rate of fuel gas supplied to the burner, and an air flow rate controller electrically connected to the air flow rate calculator and the flame temperature analyzer and configured to select the flow rate of the air at which the flame temperature transmitted by the flame temperature analyzer reaches a maximum while changing the flow rate of the air from the initial value and to control supply of the selected flow rate of the air to the burner.