Multi-Pipe Lance and Baffle for Fluid Mixing
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Solution Overview
Problem
Existing fluid treatment systems face inefficiencies in distributing and mixing injected treating agents, such as solid particles, into gas or liquid streams due to inadequate turbulence, leading to uneven surface area distribution and reduced removal efficiency in mass-transfer-limited reactions.
Innovation Solution
A multi-pipe lance with a baffle system is introduced, featuring parallel pipes with feed discharge nozzles and a baffle that generates a low pressure zone to enhance turbulence, ensuring uniform distribution and intermixing of the treating agent by redirecting sorbent particles and allocating them evenly across the nozzle-feed pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If simple ejection of particles from nozzles is used, then the device complexity is reduced, but the mixing effectiveness deteriorates
Solution Approach 1:
The injection system is segmented into multiple nozzles arranged along the lance, with each nozzle injecting particles at different positions. This segmentation creates multiple injection points that distribute particles more effectively throughout the fluid stream, improving mixing without requiring a completely complex system.
Solution Approach 2:
The lance is positioned at an angle relative to the fluid stream direction, creating a three-dimensional injection pattern. Particles are injected both upstream and downstream of the lance, and the angled configuration causes particles to disperse in multiple directions, adding spatial dimensionality to the mixing process.
2Productivity
If turbulence is increased to enhance mixing, then the mixing effectiveness is improved, but the energy consumption increases
Solution Approach 1:
The lance configuration and nozzle positioning are designed to create turbulence and enhance mixing in advance, before the particles fully enter the fluid stream. The angled lance and multiple nozzles are positioned to generate turbulent flow patterns that promote mixing from the outset, reducing the need for additional energy input downstream.
3Stability of the object's composition
If particles are injected upstream of the lance, then the distribution uniformity is improved, but the particle momentum is reduced
Solution Approach 1:
The injection system is segmented into multiple nozzles at different positions along the lance, with some nozzles positioned upstream and others downstream. This segmentation allows particles to be injected at multiple locations, creating a more uniform distribution pattern while maintaining sufficient momentum through the distributed injection approach.
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 multi-pipe lance improves the distribution of the injected medium's surface area along the length, achieving better utilization and dispersion of the treating agent, resulting in enhanced mixing and removal efficiency by creating a highly turbulent environment that spreads particles uniformly throughout the fluid stream.
Implementation Method 1
The baffle acts to generate a low pressure zone on its downstream side, which enhances turbulence in the fluid
Implementation Method 2
The baffle acts to generate a low pressure zone on its downstream side
Implementation Method 3
a dispersion lance or other device or collection of devices may be used, the function of which is to disperse the solid particles of treating agent into the gaseous stream
Implementation Method 4
it is also known to use baffles, usually positioned directly downstream of the injection point to encourage turbulence, thereby enhancing the mixing of particles with the gas stream
Data Source
AI summary
A dispersion apparatus for dispersing a treating agent into a fluid treatment system that includes a flow duct in which a fluid stream flowing through the duct is mixed with the treating agent. The apparatus is based on a multi-pipe lance positioned in the stream flow, where each pipe supplies a minimum of feed discharge nozzles (typically one to four), and the individual pipes branch off from the same location. Use of the multi-pipe lance, in combination with a suitable baffle, results in better overall dispersion/distribution of the injected medium by surface area. By improving the surface area distribution, better utilization of the injected sorbent can be achieved. The baffle acts to generate a low pressure zone on its downstream side and creates a high-intensity turbulence plume in the fluid. The orifices of the pipe are located to inject the treating agent into the turbulence plume to better distribute and intermix the injected treating agent into the surrounding fluid.