Steel Manufacturing CO2 Emission Optimization Method
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Solution Overview
Problem
The steel industry faces challenges in reducing the overall carbon footprint of steel products beyond direct manufacturing emissions, as customers require steel products that meet both quality and carbon footprint standards.
Innovation Solution
A method involving the definition of CO2 emission targets for steelmaking units, calculation of expected emissions, comparison with predefined maximum levels, and optimization of raw materials and processes to minimize CO2 emissions, with optional steps for certifying reduced emissions and allocating unemitted CO2 to 'green' products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional steelmaking processes are used to maintain production capacity and quality standards, then steel products meet customer quality requirements, but CO2 emissions exceed the reduced carbon footprint requirements
Solution Approach 1:
The patent applies preliminary action by calculating and comparing CO2 emissions against target levels before actual steelmaking production. The method defines maximum CO2 emission levels for each steelmaking unit and determines optimized manufacturing routes in advance, allowing the system to prevent excessive emissions before they occur while maintaining production capacity.
Solution Approach 2:
The patent applies parameter changes by modifying manufacturing parameters such as raw material selection, energy sources, and process choices to reduce CO2 emissions. The system calculates expected emissions for different parameter combinations and selects optimized parameters that meet both quality standards and carbon footprint requirements.
2Object-affected harmful factors
If CO2 emissions are reduced by modifying manufacturing routes, then carbon footprint standards are met, but process complexity increases due to multiple calculation and optimization steps
Solution Approach 1:
The patent applies segmentation by dividing the overall CO2 emission reduction problem into unit-specific calculations. Each steelmaking unit has its own maximum CO2 emission level and optimized manufacturing route determined independently, allowing complex optimization to be managed through modular, unit-by-unit analysis rather than system-wide complexity.
Solution Approach 2:
The patent applies feedback by implementing a comparison step where calculated CO2 emissions are compared against predefined target levels. This feedback mechanism guides the selection of optimized manufacturing routes, creating a closed-loop system that automatically adjusts processes to meet emission targets without requiring complex manual intervention.
3Productivity
If multiple steelmaking units are used to produce steel products, then production capacity is maintained, but total CO2 emissions increase requiring more complex emission management
Solution Approach 1:
The patent applies segmentation by assigning specific maximum CO2 emission levels to each steelmaking unit and determining optimized manufacturing routes for each unit independently. This segmented approach allows multiple units to operate in parallel while maintaining control over cumulative emissions through individual unit optimization.
Solution Approach 2:
The patent applies merging by combining the optimized manufacturing routes of multiple steelmaking units to achieve overall CO2 emission reduction. The system integrates the individual unit optimizations into a coordinated production strategy that maintains total production capacity while reducing cumulative emissions across all units.
Data Source
AI summary
A method to manufacture a global tonnage of steel products in at least two steelmaking units wherein expected level emissions are calculated and compared with pre-defined targets.