Coaxial Gasifier with Venturi Air Compression
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Solution Overview
Problem
Existing devices for gasification, vaporization, and pyrolysis of combustible materials are inefficient, costly, and complex in structure, with challenges in achieving optimal combustion and minimizing emissions and particulates.
Innovation Solution
A modular device with a coaxial tubular structure and Venturi-like geometry that facilitates multi-stage air compression and vortex creation for efficient gasification and pyrolysis, allowing for rapid ignition and reduced ash emissions, with a simplified assembly and low production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional gasification devices are used, then combustion can be achieved, but efficiency is low and emissions are high
Solution Approach 1:
The combustion process is divided into multiple stages: an initial combustion stage that generates heat and a subsequent gasification stage that converts remaining fuel into syngas. This segmentation allows efficient combustion while minimizing emissions by progressively converting fuel rather than burning it all at once.
Solution Approach 2:
The device maintains continuous fuel conversion through a sustained gasification process where carbon reacts with steam and oxygen to produce syngas. This continuous action ensures complete fuel utilization and prevents emissions by constantly transforming fuel into usable gas products.
2Productivity
If complex structures are used to improve combustion, then combustion efficiency may increase, but device complexity and cost increase
Solution Approach 1:
The device combines multiple functions into a single integrated structure: the combustion chamber and gasification chamber are merged with a common fuel input system, heat transfer surfaces, and exhaust system. This integration achieves efficient combustion and gasification without requiring separate complex systems for each function.
Solution Approach 2:
The device performs multiple functions simultaneously: it combusts fuel for heat generation, gasifies remaining fuel for syngas production, transfers heat to the gasification zone, and manages exhaust. This multi-functionality eliminates the need for separate specialized components, reducing overall structural complexity.
3Loss of time
If rapid ignition is achieved, then operation time is reduced, but control precision may be compromised
Solution Approach 1:
The device pre-heats the fuel and air mixture in the combustion chamber before the main combustion event. This preliminary heating action reduces ignition time by bringing the fuel closer to combustion temperature in advance, while the controlled introduction of oxygen and steam ensures precise combustion characteristics.
Solution Approach 2:
The device rapidly changes key parameters including temperature, oxygen concentration, and steam injection rate to achieve quick ignition and sustained gasification. By dynamically adjusting these parameters, the system achieves rapid response while maintaining precise control over the combustion and gasification processes.
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 device achieves superior efficiency in gasification and pyrolysis with reduced emissions and particulates, enabling rapid ignition and sustained operation, while being cost-effective and easy to assemble and transport.
Implementation Method 1
A modular device with a coaxial tubular structure and Venturi-like geometry that facilitates multi-stage air compression
Implementation Method 2
A modular device with a coaxial tubular structure and Venturi-like geometry that facilitates multi-stage air compression and vortex creation
Implementation Method 3
combustion region
Implementation Method 4
gasification and/or pyrolysis, or vaporization of combustible materials
Data Source
AI summary
The device comprises: an inner chamber (56) which has an upper aperture or mouth (36) and is delimited by a lateral wall (20) and by a base wall (19), and which is intended to contain a primary fuel to be subjected to gasification and/or pyrolysis or vaporization to generate combustible gases; an outer chamber (58) delimited by an outer lateral wall (22) positioned coaxially with the outside of the lateral wall (20) of the inner chamber (56), by a base wall (14) which is located under the base wall (19) of the combustion chamber (56) and which has at least one aperture (28) communicating with the external environment, and by a top wall which unites the outer (22) and inner (20) lateral walls, in such a way that the outer chamber (58) comprises a lower portion positioned under the inner chamber (56) and an upper annular portion (59) which surrounds the inner chamber (56); a plurality of circumferentially staggered lower passages (50) through which the base of the inner chamber (56) communicates with the surrounding annular portion (59) of the outer chamber (58); and a plurality of circumferentially staggered upper passages (39) through which the top of the annular portion (59) of the outer chamber (58) communicates with the top of the inner chamber (56).