Radial Flow Adsorption Vessel Conical Loading Device
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Solution Overview
Problem
Radial flow adsorption vessels face challenges in achieving uniform high-density adsorbent particle packing and efficient filling operations, leading to potential settling issues due to loose packing and the need for complex equipment installation and alignment.
Innovation Solution
A radial flow adsorption vessel with an integrated conical loading device that controls the flow rate and distribution of adsorbent particles, ensuring they fall individually and uniformly across the adsorption space, eliminating the need for external equipment and improving packing density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rotary loading devices are used to load adsorbent particles into radial flow vessels, then the loading operation can be performed, but shadowing of the inner porous wall occurs and unfilled space remains around the outside of the inner porous wall
Solution Approach 1:
The loading device is segmented into multiple independent loading zones with separate nozzles, each targeting specific radial positions. This allows particles to be deposited uniformly across the entire adsorption space without shadowing effects, as each segment independently controls particle flow to its designated area.
Solution Approach 2:
The loading mechanism transitions from a single rotary element to a multi-dimensional array of fixed nozzles positioned at different radial and axial locations. This spatial distribution enables simultaneous multi-point particle introduction, eliminating the shadowing problem inherent in single-point rotary loading while maintaining efficient loading operations.
2Productivity
If rotary loading devices are installed inside the vessel head, then loading can be performed, but complex installation and alignment procedures are required to ensure concentricity
Solution Approach 1:
The loading device is merged with the vessel head structure itself, with nozzles integrated directly into the head assembly. This integration eliminates the need for separate rotary device installation and complex concentricity alignment procedures, as the loading mechanism becomes an inherent part of the vessel structure rather than an external component requiring precise positioning.
Solution Approach 2:
The vessel head structure itself provides the loading functionality through integrated nozzles, eliminating the need for external rotary loading devices. The vessel head serves dual purposes: containing the adsorption space and providing the particle introduction mechanism, thereby simplifying installation and removing alignment requirements.
3Speed
If adsorbent particles are loaded at high velocity, then loading speed is improved, but particles hit the top of the inner porous wall and create unfilled shadow areas
Solution Approach 1:
Different nozzle positions and angles are optimized for local deposition requirements. Nozzles are positioned and angled to deliver particles at appropriate velocities for their specific locations, ensuring uniform distribution across the adsorption space. This localized optimization prevents high-velocity impacts that would cause shadowing while maintaining efficient loading rates.
Solution Approach 2:
The particle introduction is distributed across multiple spatial dimensions with nozzles positioned at various radial distances and angles. This multi-dimensional approach allows particles to be delivered at optimized velocities for each location, preventing the shadowing effect caused by uniform high-velocity radial flow while maintaining overall loading efficiency.
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 solution enables efficient and uniform loading of adsorbent particles, reducing operational time and preventing settling issues by ensuring a dense and uniform adsorbent layer, thus enhancing the performance and reliability of the adsorption process.
Implementation Method 1
ensuring they fall individually and uniformly across the adsorption space
Data Source
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AI summary
A radial flow adsorption vessel comprising a cylindrical outer shell having a top end and a bottom end, the top end is enclosed by a vessel head that provides a centrical opening usable as a port to introduce or remove adsorbent particles into or from the vessel; at least one annular adsorption space disposed inside the shell, the at least one annular adsorption space defined by an outer and inner cylindrical porous wall, both co-axially disposed inside the shell; and a loading device for the adsorbent particles positioned above the at least one annular adsorption space at the top end of the vessel, the loading device comprises at least one conical element that extends radially to the outer cylindrical porous wall, the at least one conical element provides a plurality of orifices arranged at least in a region sitting above the at least one annular adsorption space.