Biofuel Pellets with Coal for Thermal Power Plants
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Solution Overview
Problem
Conventional biofuels for thermal power plants often have variable compositions that can lead to harmful environmental emissions, require significant modifications to power plants, and fail to achieve substantial reductions in greenhouse gas emissions while maintaining competitive costs with coal.
Innovation Solution
A biofuel composition comprising up to 30% coal and 60-70% agricultural products, processed into pellets with a specific density and humidity level, and coated with an anti-flying dust agent, which can be used without modifying existing thermal power plants, reducing greenhouse gas emissions by up to 70% and offering a competitive cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If pure agricultural products are used as biofuel, then greenhouse gas emissions are reduced, but energy density and combustion stability deteriorate compared to coal
Solution Approach 1:
The patent creates a composite fuel consisting of agricultural products (60-70% by weight) combined with coal or petroleum coke (30-40% by weight). This composite structure allows the fuel to maintain high energy density from the fossil fuel component while the agricultural component provides greenhouse gas reduction benefits, effectively resolving the contradiction between environmental performance and energy content.
2Adaptability or versatility
If variable composition biofuels are used, then adaptability to different sources is improved, but harmful environmental emissions increase
Solution Approach 1:
The patent establishes specific parameter ranges for the fuel composition: agricultural products at 60-70% by weight and coal/petroleum coke at 30-40% by weight. These controlled parameters ensure consistent combustion characteristics and emission profiles while maintaining flexibility in selecting different types of agricultural products, thus resolving the contradiction between adaptability and emission control.
3Ease of operation
If existing thermal power plants are used without modification, then operational simplicity is maintained, but compatibility with new biofuel composition is reduced
Solution Approach 1:
The patent formulates a homogeneous composite fuel where agricultural products and coal/petroleum coke are thoroughly mixed at controlled ratios (60-70% and 30-40% by weight respectively). This homogeneous composition ensures uniform combustion characteristics that are compatible with existing thermal power plant equipment, allowing direct use without modifications while maintaining fuel compatibility.
4Use of energy by moving object
If agricultural products are processed into pellets, then energy density is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines the pelletization process with the mixing of agricultural products and coal/petroleum coke into a single integrated manufacturing step. The mixture is formed into pellets during the granulation process, eliminating the need for separate mixing and pelletization equipment, thus improving energy density through pelletization while minimizing manufacturing complexity.
Data Source
Figure 1
AI summary
Biofuel in the form of pellets, comprises up to 30 wt.% of coal and 60-70 wt.% of a mixture of at least two exits of agricultural products obtained from sorting operations, calibration, screening of cereals, oilseeds and/or protein such as broken grains, glumes, glumellae, pods, leaves or stems. An independent claim is included for producing the biofuel comprising mixing the above components, grinding the components and performing a second phase of mixing the grinded mixture, and granulating the mixture.