Removable Lance Assembly with Rotating Turbulence Blades
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Solution Overview
Problem
Existing dry sorbent injection systems face challenges in achieving thorough mixing and dispersion of alkaline materials into fluid streams due to limited turbulence and buildup issues, requiring multiple lance systems and structures that can create transient turbulent zones without increasing pressure drop.
Innovation Solution
A removable lance assembly with a expandable or rotating blade/barrier that increases its diameter beyond the access point, creating a larger turbulence zone for improved dispersion of particulates, and preventing buildup by retracting when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If simple ejection of particles from nozzles is used, then the device complexity is low, but the mixing effectiveness and dispersion quality are insufficient
Solution Approach 1:
The lance assembly employs movable wings that can transition between retracted and deployed positions. When deployed, the wings create turbulence zones that significantly improve particle dispersion and mixing effectiveness. This dynamic configuration allows the system to adapt its turbulence-generating capability based on operational requirements while maintaining a relatively simple base structure.
Solution Approach 2:
The lance assembly is divided into functional segments: the lance body, the shroud with access ports, and the movable wings. This segmentation allows each component to perform its specific function independently - the lance delivers particles, the shroud provides access and structural support, and the wings generate turbulence when needed.
2Reliability
If multiple permanently deployed baffles are added to create turbulent flow, then the dispersion effectiveness is improved, but the pressure drop increases cumulatively
Solution Approach 1:
The movable wings can be deployed only when and where turbulence is needed for particle dispersion, rather than permanently blocking the flow path. This dynamic deployment minimizes the time the wings are in the flow path, reducing cumulative pressure drop while still achieving effective dispersion when activated.
Solution Approach 2:
The wings are deployed periodically or transiently during the particle injection process to create turbulence, then retracted when not needed. This periodic action provides turbulence only during the critical dispersion phase rather than continuously, reducing energy loss.
3Area of stationary object
If the lance assembly includes a blade or barrier expanded beyond the port diameter, then the turbulence zone diameter is increased for better dispersion, but the device complexity increases
Solution Approach 1:
The wings are designed to rotate from a retracted position (aligned with the lance) to a deployed position where they extend beyond the shroud diameter. This rotational movement allows the turbulence zone to expand beyond the access port diameter without requiring a permanently complex structure.
Solution Approach 2:
The same movable wing structure serves multiple functions: it provides structural support for the shroud, acts as a turbulence-generating barrier when deployed, and can be retracted to minimize its impact on flow. This multi-functionality reduces the need for separate components.
4Adaptability or versatility
If removable lance structures are used for transient injection needs, then the adaptability is improved, but the reliability of maintaining turbulent flow decreases
Solution Approach 1:
The movable wings provide a reliable mechanism for maintaining turbulent flow during particle injection by automatically deploying when the lance is in position and retracting when removed. This dynamic response ensures consistent turbulence generation throughout the injection process while allowing easy adaptation to different operational conditions.
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
Enhances the efficiency of pollutant treatment by ensuring thorough mixing and dispersion of sorbent materials, reducing the need for multiple lance systems and minimizing pressure drop, while allowing for flexible placement and removal of turbulence-inducing structures.
Implementation Method 1
the rotation of the blade or barrier creates a larger diameter for assembly than the diameter of the port through which the lance was inserted... creating a higher degree of turbulence and dispersion
Data Source
AI summary
The system and method for preventing air leakage from the process side to the bearing side of a mill. The system includes a labyrinth seal ring comprising a series of knives defining first and second labyrinth paths from an air inlet to the process side and the bearing side of the system, respectively. The differences in the two paths such as provided by the number of knives used in each path creates a differential pressure drop which biases air from the air inlet to the process side. The labyrinth seal thus provides a reliable and superior method for reducing the potential for particulate in the process side of the mill from damaging the bearing system.