Tunable Impingement Injector With Interchangeable Jets
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Solution Overview
Problem
Carbonaceous gasifier systems face inefficiencies in mixing carbonaceous material and oxidant due to variations in injection velocity and momentum, leading to suboptimal combustion efficiency, as existing injectors are not tunable to accommodate differences in carbonaceous material properties.
Innovation Solution
The development of a tunable impingement injector with replaceable jet tubes of varying diameters and materials, allowing on-site adjustment of velocity and momentum to match specific gasifier system requirements, featuring a cylindrical injector core and faceted geometry for easy assembly and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed injector design is used, then manufacturing simplicity is maintained, but adaptability to different carbonaceous material properties deteriorates
Solution Approach 1:
The injector is divided into a modular structure with a reusable injector body and interchangeable jet tubes. Each jet tube is a separate component that can be removed and replaced independently, allowing the system to adapt to different carbonaceous materials without redesigning the entire injector.
Solution Approach 2:
The injector body serves as a universal component that can accommodate multiple types of jet tubes with different diameters and materials. This multi-functional design allows a single injector body to handle various carbonaceous material properties by simply changing the jet tube.
2Productivity
If injector parameters are fixed, then manufacturing precision is maintained, but mixing efficiency deteriorates due to velocity and momentum variations
Solution Approach 1:
The injector transitions from a static design to a dynamic, adjustable system. The jet tubes can be interchanged to change injection velocity and momentum parameters, allowing the system to optimize mixing efficiency for different operating conditions and carbonaceous material properties.
Solution Approach 2:
The injection parameters (velocity, momentum) are changed by replacing jet tubes with different diameters. This parameter adjustment enables optimization of mixing efficiency without complex control systems, simply by selecting the appropriate jet tube for the specific application.
3Reliability
If single-material construction is used, then manufacturing simplicity is maintained, but performance optimization deteriorates due to material property limitations
Solution Approach 1:
Different parts of the injector system use different materials optimized for their specific functions. The jet tubes can be made from materials specifically suited for their exposure to carbonaceous materials and high-velocity injection, while the injector body uses materials optimized for structural integrity and thermal resistance.
Solution Approach 2:
The injector system employs composite construction with the injector body and jet tubes potentially made from different materials. This allows each component to be manufactured from the most suitable material for its specific operational requirements, improving overall reliability without requiring complex composite manufacturing processes.
Data Source
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AI summary
An impingement injector includes an injector core having a plurality of conduits. The conduits include a first conduit and second conduits disposed circumferentially around the first conduit. The second conduits are at an impinging angle with respect to the first conduit. Replaceable, tunable jets are disposed in corresponding ones of the second conduits.