Dual-Mode Direct Flame Burner for Galvanizing Furnace Pre-Oxidation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing galvanizing furnaces face challenges in controlling combustion systems for pre-oxidation processes in AHSS steels, leading to inefficiencies, high fuel consumption, safety risks, and inflexibility due to the use of premixed burners with non-preheated air, which are not adaptable to varying steel types and process requirements.
Innovation Solution
A direct flame burner unit with dual operation modes, allowing diffusive and premixed combustion, using preheated and non-preheated air and fuel sources, enabling precise control of combustion ratios and adaptability to different steel types, reducing fuel consumption and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If premixed burners with non-preheated air are used for pre-oxidation processes, then combustion control is simplified, but fuel consumption increases and safety risks arise
Solution Approach 1:
The patent changes the parameter of air temperature from ambient to preheated (500-800°C), which fundamentally alters the combustion characteristics. This enables the burner to operate with preheated air instead of ambient air, improving combustion efficiency and reducing fuel consumption while maintaining control capability through the dual-mode design.
Solution Approach 2:
The burner is designed with dynamic switching capability between two operating modes (premixed and diffusive) through controlled valve operations. This allows the system to adapt its combustion mode based on process requirements, optimizing fuel consumption in pre-oxidation processes while maintaining flexibility for other steel types.
2Device complexity
If premixed burners with non-preheated air are used, then device structure is simplified, but adaptability to varying steel types decreases
Solution Approach 1:
The burner unit is designed with multi-functionality, capable of operating in two distinct modes (premixed and diffusive) to handle different steel types and process requirements. The premixed mode is optimized for pre-oxidation processes with AHSS steels, while the diffusive mode provides flexibility for other steel types, making a single burner unit adaptable to varying production needs.
Solution Approach 2:
The burner incorporates dynamic valve control mechanisms that enable real-time switching between operating modes based on the type of steel being processed. This dynamic adaptability allows the same burner structure to optimize combustion for different steel types without requiring multiple dedicated burners.
3Device complexity
If premixed burners with non-preheated air are used, then combustion ratio control is easier, but rapid control accuracy for pre-oxidation processes is reduced
Solution Approach 1:
By changing the air temperature parameter to preheated air (500-800°C), the combustion reaction characteristics are enhanced, allowing for more rapid and accurate control of the pre-oxidation process. The preheated air ensures consistent combustion speed and temperature, improving the precision and responsiveness of the control system.
Solution Approach 2:
The burner system incorporates control mechanisms that monitor combustion parameters and adjust the air-fuel mixture ratio in real-time. This feedback control enables rapid and accurate adjustment of the combustion ratio to achieve the desired pre-oxidation conditions, improving manufacturing precision.
4Device complexity
If single-mode burners are used, then device complexity is reduced, but flexibility for different process requirements is lost
Solution Approach 1:
The burner unit is designed with multi-functionality, capable of operating in two distinct modes (premixed and diffusive) to handle different steel types and process requirements. The premixed mode is optimized for pre-oxidation processes with AHSS steels, while the diffusive mode provides flexibility for other steel types, making a single burner unit adaptable to varying production needs.
Solution Approach 2:
The burner incorporates dynamic valve control mechanisms that enable real-time switching between operating modes based on the type of steel being processed. This dynamic adaptability allows the same burner structure to optimize combustion for different steel types without requiring multiple dedicated burners.
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 burner unit ensures rapid and accurate control of pre-oxidation processes, optimizes fuel consumption, increases safety, and enhances flexibility and adaptability of furnaces to varying steel types, while maintaining energy efficiency.
Implementation Method 1
a burner (10) comprising: a combustion head (11) wherein a combustion chamber (12) is obtained, said combustion chamber being provided with an exit opening (13) for the combustion flame
Implementation Method 2
a first chamber (16) provided with at least an inlet opening (17) which is connectable to a supply source (SA1) of a pre-heated comburent
Data Source
AI summary
A direct flame furnace burner unit for furnaces for the thermo-chemical treatment of steel strips in continuous hot-dip galvanizing plants includes a burner with a combustion head provided with a combustion chamber having an outlet opening of the combustion flame, and a body to which the combustion head is fixed. The body includes a first chamber which is in communication with the combustion chamber, a first lance for the injection of a fuel into the combustion chamber, a mixing chamber provided with at least a first inlet and a second inlet opening which is connectable to a second supply source, at least a second lance for the injection of the mixture into the combustion chamber. The burner is operable in two distinct operating modes, a diffusive flame combustion mode and a premixed flame combustion mode.