Engineered Fuel Production Through Controlled Waste Separation
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Solution Overview
Problem
Existing technologies for converting landfill-bound waste into fuel products are inefficient and result in heterogeneous, low-quality fuel with high emissions and contamination, failing to meet customer specifications for composition and combustion characteristics.
Innovation Solution
A multi-step process involving mechanical separation, spectroscopic analysis, and recombination of fibers and clean plastics from municipal solid waste to produce a homogeneous engineered fuel product with precise control over composition and combustion characteristics, including the use of NIR/HIS sorters and densification to achieve consistent fuel properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If municipal solid waste is processed using existing technologies, then fuel product can be produced, but the fuel is heterogeneous with high emissions and contamination, failing to meet customer specifications
Solution Approach 1:
The waste stream is divided into distinct weight categories (heavy, medium, light) through mechanical separation, allowing each segment to be processed and recombined in controlled proportions to achieve homogeneous fuel composition with consistent combustion characteristics
Solution Approach 2:
The invention controls the proportion of different weight materials in the recombined stream to achieve target fuel specifications, adjusting material ratios to optimize heat content, biogenic content, and combustion properties while reducing emissions
2Manufacturing precision
If heavy weight materials are removed from municipal solid waste, then fuel quality improves, but processing complexity increases
Solution Approach 1:
The invention replaces complex spectroscopic analysis and sorting systems with a simpler mechanical separation system based on weight-based classification, achieving fuel composition control through mechanical means rather than sophisticated optical detection and sorting equipment
3Stability of the object's composition
If medium weight materials are separated from light weight materials, then fuel homogeneity improves, but processing time increases
Solution Approach 1:
The waste stream is divided into distinct weight categories (heavy, medium, light) through mechanical separation, allowing each segment to be processed and recombined in controlled proportions to achieve homogeneous fuel composition with consistent combustion characteristics
Solution Approach 2:
The invention controls the proportion of different weight materials in the recombined stream to achieve target fuel specifications, adjusting material ratios to optimize heat content, biogenic content, and combustion properties while reducing emissions
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 process produces a high-BTU, low-emission fuel with consistent composition and combustion properties, meeting customer specifications and reducing landfill waste by up to 65%, suitable for use in coal-fired boilers and kilns, with reduced criteria pollutants and GHG emissions.
Implementation Method 1
NIR/HIS sorters
Implementation Method 2
NIR/HIS sorters
Implementation Method 3
The fine-tuned recombined stream can be densified to form the engineered fuel product
Data Source
AI summary
A process and system for producing an engineered fuel product that meets customer specifications for composition and combustion characteristics is provided. The engineered fuel product is preferably a high-BTU, alternative fuel that burns cleaner than coal or petroleum coke (petcoke) and has significantly reduced NOx, SO2 and GHG emissions.