Multi-Flame Furnace Heating for Uniform Slope Melting
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Solution Overview
Problem
In existing melting processes, the uneven distribution of thermal energy due to the orientation and geometry of flames leads to variations in the melting front position, resulting in incomplete melting and reduced productivity, particularly for materials with low thermal conductivity, and can cause mechanical degradation of the unmelted material.
Innovation Solution
A furnace design with multiple flames directed at different distances from the side wall to create distinct impact zones on the unmelted material's inclined free surface, regulating the power and impulse of each flame to optimize heating and prevent mechanical degradation, ensuring homogeneous melting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single or two flames are directed towards the free surface of the embankment, then the heating structure is simple, but the thermal energy distribution is uneven leading to imbalanced melting
Solution Approach 1:
The heating system is segmented into multiple independent flame sources (at least three flames) directed at different locations on the embankment free surface. Each flame can be independently controlled to deliver thermal energy to specific zones, ensuring uniform melting across the entire embankment width while maintaining a relatively simple overall structure.
Solution Approach 2:
Different regions of the embankment free surface are targeted with flames of varying intensities and positions. The flame power and orientation are locally adjusted according to the specific thermal needs of each zone, allowing precise control over the melting process in different areas while keeping the global system simple.
2Reliability
If the flame power is increased to ensure complete melting, then the melting completeness improves, but the mechanical degradation of the embankment slope increases
Solution Approach 1:
The total heating requirement is divided among multiple flame sources positioned at different locations. Each flame operates at a moderate power level rather than one or two high-power flames, distributing the thermal load and reducing localized mechanical stress on the embankment while ensuring complete melting through cumulative heating.
Solution Approach 2:
The flame parameters (power, orientation, position) are optimized to deliver effective heating while minimizing mechanical impact. By adjusting multiple parameters simultaneously across several flames, the system achieves complete melting with reduced mechanical degradation compared to high-power concentrated heating.
3Productivity
If the melting front is positioned closer to the furnace outlet to increase productivity, then the production efficiency improves, but the risk of incomplete melting and unmelted material in discharge increases
Solution Approach 1:
The embankment free surface is divided into multiple heating zones, each served by dedicated flame sources. This segmentation allows the melting front to be advanced closer to the furnace outlet while maintaining uniform and complete melting across all zones, as each zone receives adequate thermal energy from its corresponding flame.
Solution Approach 2:
The flame heating characteristics are locally optimized for each zone of the embankment. By tailoring the heating approach to specific locations, the system can safely advance the melting front closer to the outlet while ensuring that no area suffers from incomplete melting, thus increasing productivity without compromising reliability.
4Manufacturing precision
If the loading rate is reduced to allow complete melting, then the melting quality improves, but the production output decreases
Solution Approach 1:
The embankment is divided into multiple heating zones with dedicated flame sources. This segmentation enables the system to handle higher loading rates by distributing the thermal processing load across multiple zones simultaneously, maintaining complete and uniform melting while increasing overall production capacity.
Solution Approach 2:
Each zone of the embankment receives customized heating appropriate to its local conditions and load. This local optimization allows the system to process larger quantities of material while maintaining high melting quality in each zone, thereby increasing production output without sacrificing melting quality.
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 approach enhances melting uniformity, increases production efficiency, reduces the risk of mechanical degradation, and ensures the absence of unmelted material in the discharged molten charge, leading to energy savings and improved product quality.
Implementation Method 1
the thermal energy transferred to the embankment by each of these flames in its impact zone is regulated
Implementation Method 2
Thermal energy is primarily imparted by the flame to unmelted material at the point where the flame intersects the free surface
Implementation Method 3
the thermal energy required for the progressive melting of the solid charge in the slab is supplied by one or more burners mounted within the furnace
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a melting process, in which unmelted material forms a slope 30 resting on one side against the upstream wall 11 of the furnace 10 and presenting on the opposite side a free surface 40; the unmelted material is heated by means of at least three flames 51, 52, 53 with regulated power and impulse directed towards the free surface 40 so as to define, on this free surface 40, impact zones 41, 42, 43 at at least three different distances 11, 12, 13 from one of the lateral walls 13, 13' of the furnace 10.