Nested Ash Hopper Cooling Frame for High-Temperature Dedusting
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Solution Overview
Problem
Existing high-temperature dedusting apparatuses require separate support structures for ash hoppers, which complicate the design and do not effectively manage temperature fluctuations, leading to potential safety issues and reduced efficiency.
Innovation Solution
A nested ash discharge structure with inner and outer ash hoppers and cooling medium pipes that provide integrated support and cooling, allowing for natural circulation of cooling medium to manage temperature and ensure structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate support structure is provided for the ash hopper, then the ash hopper can be supported independently, but the device complexity increases and the structure becomes more complicated
Solution Approach 1:
The support structure and cooling structure are merged into a single integrated framework. The support columns serve dual functions: providing structural support for the ash hopper and housing cooling water pipes for thermal management. This eliminates the need for separate support structures while maintaining both mechanical stability and temperature control.
Solution Approach 2:
The support columns are designed as multi-functional elements that simultaneously perform structural support and cooling functions. By embedding cooling water pipes within the support columns, the same structural component serves both mechanical and thermal management purposes, reducing overall system complexity.
2Temperature
If cooling water pipes are extended outside the housing for separate support, then cooling function is provided, but the device complexity increases
Solution Approach 1:
The cooling water pipes are merged with the support columns, forming an integrated structure where the pipes are embedded within or attached to the load-bearing elements. This eliminates the need for separate external piping systems while maintaining effective cooling of the ash hopper.
3Productivity
If the ash hopper is subjected to high temperature fluctuations, then the operating conditions are maintained, but the reliability and safety are compromised
Solution Approach 1:
Cooling water pipes are pre-installed within the support structure and ash hopper assembly before operation begins. The cooling system is prepared in advance to immediately counteract high temperature fluctuations when they occur, preventing thermal damage before it can compromise safety or reliability.
Solution Approach 2:
The high temperature fluctuations, which initially appear harmful, are converted into an opportunity for waste heat recovery. The cooling water system captures the thermal energy from the ash hopper and support structure, transforming the harmful heat into a useful resource that can be reused elsewhere in the steelmaking process.
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 solution ensures safe operation by combining support and ash discharge, preventing cross-flow of gases, and enhancing waste heat recovery while maintaining dedusting efficiency.
Implementation Method 1
the inner cooling medium pipes cool and support the inner ash hopper, the outer cooling medium pipes cool and support the outer ash hopper
Implementation Method 2
allowing for natural circulation of cooling medium to manage temperature
Data Source
Figure 1
AI summary
The present disclosure discloses a nested ash discharge structure and an ash discharge method in a high-temperature dedusting apparatus. The nested ash discharge structure includes a nested ash hopper structure and a cooling frame structure. The nested ash hopper structure at least includes an inner ash hopper and an outer ash hopper which are nested in the high-temperature dedusting apparatus. An inner ash flow cavity penetrating the inner ash hopper in an axial direction is disposed in the inner ash hopper, and an annular space between the inner ash hopper and the outer ash hopper forms an outer ash flow cavity. The cooling frame structure includes inner cooling medium pipes and outer cooling medium pipes which are disposed as a frame in the high-temperature dedusting apparatus. The inner cooling medium pipes cool and support the inner ash hopper, and the outer cooling medium pipes cool and support the outer ash hopper. An overall flow direction of cooling medium in the inner cooling medium pipes and the outer cooling medium pipes is from bottom to top. The present disclosure eliminates the need for separately providing a support structure for the nested ash hopper structure, effectively overcomes the high temperature in the apparatus, achieves a combination of the support and ash discharge, and has a simple whole structure, thereby providing favourable conditions for the safe operation of the apparatus.