Radial Flow Vessel Particle Loading Assembly
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Solution Overview
Problem
Radial flow vessels pose challenges in loading distinct, concentric layers of particles due to the radial disposition of particles and the parallel orientation of layer interfaces with gravity, which complicates the formation of uniform and high packing density particle beds without the use of screens or barriers.
Innovation Solution
A particle loading assembly and method that utilizes a sliding barrier and particle distributors to segregate and distribute particles radially and concentrically within the vessel, achieving a clean and sharp interface between layers without screens, and ensuring uniform packing density through controlled particle distribution and lifting mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If screens or barriers are used to segregate particle layers during loading, then particle layer segregation is improved, but device complexity and capital cost increase
Solution Approach 1:
The patent applies preliminary action by pre-positioning a sliding barrier at the interface location between particle layers before loading begins. The barrier is initially held in place to define the boundary, then selectively removed or lowered to allow particles to form the desired radial layers without requiring permanent screens or barriers throughout the vessel structure
Solution Approach 2:
The sliding barrier is made movable rather than fixed, allowing it to be positioned dynamically during the loading process. The barrier can slide vertically to accommodate different loading stages, enabling particle segregation during loading while maintaining vessel simplicity during operation, thus resolving the contradiction between segregation precision and device complexity
2Productivity
If particles are loaded simultaneously into radial flow vessel, then productivity is improved, but particle layer interface quality deteriorates
Solution Approach 1:
The loading process is segmented into distinct zones using the sliding barrier, which divides the vessel into regions for different particle types. This allows simultaneous loading of multiple particle types while maintaining clear separation at the interface, achieving both high productivity and sharp interface quality without requiring sequential loading
Solution Approach 2:
The sliding barrier acts as a temporary intermediary element during loading that enables simultaneous particle introduction while preventing mixing at the interface. Once loading is complete, the barrier is removed, leaving no permanent structure that would interfere with vessel operation, thus maintaining both loading efficiency and interface sharpness
3Quantity of substance
If particle distributors are positioned close to particle bed, then packing density is improved, but difficulty of operation increases
Solution Approach 1:
The particle distributors are made adjustable rather than fixed, allowing their position to be dynamically changed during operation. The distributors can be raised or lowered to optimize packing density for different particle sizes and loading stages, while the adjustment mechanism is designed to be simple and accessible, resolving the contradiction between achieving high packing density and maintaining ease of operation
Data Source
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AI summary
Particle loading assembly and method for loading particles into a vessel to form a densely packed particle bed comprising an inner layer of particles and an outer layer of particles. The inner layer of particles is arranged radially and concentric with the outer layer of particles. The inner layer of particles contains at least a first type of particle of different granulometry or range of composition or both granulometry and range of composition from a second type of particles contained in the outer layer.