Biochar Processing Tank with Integrated Grinding and Gas Recirculation
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Solution Overview
Problem
Current methods for converting agricultural waste into Biochar are economically costly and environmentally detrimental due to the need for separate charring, transportation, grinding, and packaging, which also inefficiently use fuel and result in air contamination.
Innovation Solution
A sealed processing tank with an agitator, conveyer belt, water sprayers, and a combustion unit that allows for simultaneous charring and grinding of agricultural waste in one furnace, followed by water cooling and gas recirculation to enhance fuel efficiency and reduce emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate charring, transportation, grinding, and packaging steps are used, then complete processing can be achieved, but fuel consumption increases and environmental impact worsens
Solution Approach 1:
The patent combines charring and grinding operations into a single integrated furnace system. The grinding mill is positioned inside the charring furnace, allowing agricultural waste to be charrred and ground in one continuous process, eliminating separate transportation and processing steps that would consume additional fuel.
Solution Approach 2:
The furnace serves multiple functions simultaneously: it acts as a charring chamber for thermal processing, a grinding mill for size reduction, and a heating chamber for thermal energy application. This multi-functional design eliminates the need for separate dedicated equipment for each operation, thereby reducing overall fuel consumption.
2Productivity
If separate charring, transportation, grinding, and packaging steps are used, then complete processing can be achieved, but environmental contamination increases
Solution Approach 1:
By integrating grinding into the charring furnace, the patent eliminates the transportation step between separate facilities. This closed-loop system prevents the release of harmful emissions during transportation and ensures that all processing occurs within a controlled environment with centralized emission management.
Solution Approach 2:
The system captures and recycles the gases produced during charring back into the combustion chamber for fuel combustion. This converts what would be harmful emissions into useful thermal energy, reducing both environmental contamination and fuel consumption simultaneously.
3Manufacturing precision
If multiple separate processing steps are used, then thorough processing can be achieved, but processing time increases
Solution Approach 1:
The patent merges charring and grinding into a single simultaneous operation within the same furnace. Agricultural waste undergoes both thermal decomposition and size reduction in one continuous process, dramatically reducing the total processing time compared to sequential operations while maintaining processing completeness.
Solution Approach 2:
The integrated system enables continuous processing where material flows continuously through the furnace for simultaneous charring and grinding. This eliminates idle time between operations and maintains productive action throughout the entire processing cycle, reducing overall processing duration while ensuring thorough transformation of the material.
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
This integrated system reduces fuel consumption, minimizes environmental impact, and streamlines the Biochar production process by eliminating the need for separate grinding and packaging steps, while ensuring uniform charring and efficient thermal management.
Implementation Method 1
The Biochar unit also contains a combustion unit consisting of a burner to burn the fuel adjacent to the container to heat the rice straw air free from all directions
Implementation Method 2
The machine is equipped with water sprayers to spray the hot Biochar with water directly before it comes out of the container
Implementation Method 3
The gases collected inside the container are drawn out to the combustion chamber by means of a vacuum ventilator operated by an electric motor
Data Source
Figure 1
AI summary
Biochar machine consist of sealed container for rice straw bales with two gates. The top gate for rice straw feeding and the bottom gate for Biochar. The Biochar unit equipped with stirrer operated with electric motor and speed reduction unit. The Biochar unit operated indirectly through combustion chamber with fuel burner to heat the sealed container from all sides indirectly. The gases produced as a result of heating the rice straw are collected and returned back to the combustion chamber through a blower.