Liquid Distributor Troughs and Splash Baffles
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Solution Overview
Problem
Existing liquid distributors in mass transfer columns face challenges with clogging and uneven liquid distribution at low flow rates, as smaller holes are prone to clogging and increased spacing between holes can lead to inadequate merging of liquid streams.
Innovation Solution
The design incorporates primary and secondary troughs with strategically placed liquid discharge holes and splash baffles, allowing for larger holes and increased spacing while ensuring uniform distribution through secondary troughs that act as flow multipliers, enhancing lateral spreading and reducing clogging risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If smaller holes are used in the trough side walls to reduce flow capacity at low liquid rates, then the liquid head can be sufficient to generate necessary force for liquid streams to reach splash baffles, but the holes are more likely to become clogged
Solution Approach 1:
The liquid distributor is divided into primary and secondary troughs with separate discharge hole systems. Primary troughs have first discharge holes while secondary troughs have second discharge holes, allowing the system to segment the liquid distribution function and reduce clogging risk in individual holes
Solution Approach 2:
The invention changes the physical parameters of the discharge holes by providing larger diameter holes compared to conventional distributors. This parameter change allows sufficient liquid head development without requiring small holes, thereby preventing clogging while maintaining reliable liquid distribution
2Ease of manufacture
If spacing between holes is increased to reduce total number of holes, then manufacturing and maintenance are simplified, but individual liquid streams may not merge adequately
Solution Approach 1:
The invention adds a vertical dimension to liquid distribution by using secondary troughs positioned below primary troughs. Liquid streams from primary troughs discharge into secondary troughs, creating a two-level distribution system that achieves uniform coverage without requiring closely spaced holes in a single plane
Solution Approach 2:
The distribution function is segmented between primary and secondary troughs. Primary troughs handle initial liquid discharge while secondary troughs distribute liquid at a lower level, allowing larger spacing between holes while maintaining uniform liquid distribution through the segmented approach
3Object-affected harmful factors
If larger holes are used to prevent clogging, then clogging risk is reduced, but sufficient liquid head may not develop to generate necessary force for liquid streams to reach splash baffles
Solution Approach 1:
The liquid discharge function is segmented into primary and secondary stages. Primary troughs with larger holes prevent clogging while secondary troughs provide additional liquid accumulation and discharge control, ensuring sufficient liquid head and momentum are maintained despite using larger hole diameters
Solution Approach 2:
Secondary troughs act as intermediary elements between primary troughs and splash baffles. They receive liquid from primary troughs through larger discharge holes, provide additional liquid head development space, and ensure sufficient momentum is achieved before liquid reaches the splash baffles
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 design ensures effective liquid distribution across mass transfer devices, maintaining uniform interaction between liquid and vapor streams even at low flow rates, reducing clogging and improving operational efficiency.
Implementation Method 1
the individual liquid streams then descend along and spread across the splash baffles before dripping off the lower edge of the baffles
Implementation Method 2
generate the necessary force to cause the individual liquid streams to exit the holes with enough momentum to reach the outwardly-spaced splash baffles
Data Source
AI summary
A liquid distributor is provided for receiving and distributing a liquid stream in a mass transfer column. The liquid distributor has a plurality of elongated primary troughs and a plurality of secondary troughs that are positioned adjacent the primary troughs at a location to receive at least some of the individual primary discharge streams from the primary troughs. Splash baffles are spaced a preselected distance from liquid discharge holes in the side walls of the secondary troughs to receive at least some of the individual secondary discharge streams and cause a lateral spreading thereof as the individual second discharge streams descend along the splash baffles and drip from lower edges thereof.