Petroleum Coke Asphalt Composition for Durable Low-Emission Paving
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Solution Overview
Problem
Petroleum coke's physical and chemical characteristics pose processing challenges, limiting its broader adoption and integration into other materials, and environmental concerns constrain its use due to combustion-related pollutant release.
Innovation Solution
Incorporating petroleum coke into asphalt compositions as a filler, binder, fine aggregate, and coarse aggregate, with specific weight percentages and particle sizes, to enhance its utilization in paving, roofing, and waterproofing applications, while mitigating environmental impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If petroleum coke is used as a filler in asphalt composition, then the utilization of petroleum coke is expanded and CO2 emissions are reduced, but the processing challenges due to its physical and chemical characteristics remain
Solution Approach 1:
The patent applies parameter changes by controlling the particle size of petroleum coke to specific ranges (0.075mm to 50mm) and adjusting its content in the asphalt composition (5-50 wt%). These parameter modifications transform the refractory petroleum coke into a processable filler that can be effectively integrated into asphalt mixes while maintaining desired performance characteristics.
Solution Approach 2:
The patent creates a composite material system by combining petroleum coke with asphalt binder and aggregates. This composite approach leverages the high carbon content and fine particle nature of petroleum coke to enhance asphalt properties while the asphalt matrix provides a suitable environment that mitigates the processing difficulties of pure petroleum coke.
2Strength
If petroleum coke is incorporated into asphalt with specific particle sizes and compositions, then the durability and mechanical properties of asphalt mixes are improved, but the complexity of composition formulation increases
Solution Approach 1:
The patent systematically adjusts multiple parameters including petroleum coke particle size (0.075mm to 50mm), content (5-50 wt%), and chemical composition (carbon content 80-95%) to optimize mechanical properties. This structured parameter optimization improves durability while providing a clear formulation framework that reduces complexity.
Solution Approach 2:
The patent applies local quality by specifying different particle size distributions and chemical compositions for petroleum coke based on their functional roles. Finer particles (0.075mm to 4.75mm) are used to fill voids and improve cohesion, while larger particles provide structural support, allowing each component to contribute optimally to overall strength.
3Use of energy by moving object
If petroleum coke is used as an energy source, then high carbon content provides energy potential, but environmental concerns due to combustion-related pollutant release constrain its use
Solution Approach 1:
The patent converts the harmful aspect of petroleum coke (high carbon content leading to pollutant release during combustion) into a beneficial property. The high carbon content, which would normally be a source of CO2 emissions when burned, is instead utilized as a filler material in asphalt that enhances durability and provides long-term carbon sequestration in pavement structures.
Solution Approach 2:
The patent recovers petroleum coke, a byproduct of oil refining that would otherwise be discarded or burned, and transforms it into a valuable construction material. This recovery process eliminates the need for combustion, thereby preventing pollutant release while maintaining the material's high carbon content as a functional advantage in asphalt applications.
Data Source
AI summary
The disclosure relates to a petroleum coke-containing asphalt composition and a method paving a surface using the petroleum coke-containing asphalt composition. A petroleum coke-containing roof coating composition and a method of treating a building surface using the petroleum coke-containing roof coating composition are also disclosed.