Swing Adsorption Bed Valve Positioning for Maintenance Access
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Solution Overview
Problem
Conventional swing adsorption processes face challenges such as maintaining low pressure drop, ensuring good flow distribution, minimizing dispersion, and facilitating rapid cycling, which complicates maintenance and increases operational costs due to labor-intensive valve and equipment removal.
Innovation Solution
The cyclical swing adsorbent bed unit configures valves outside the interface cross-sectional area, allowing access to the adsorbent material without removing other equipment, thus reducing maintenance time and costs while managing dead volume effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If valves are disposed within the interface cross-sectional area of the adsorbent bed to minimize dead volume, then dead volume is reduced improving process efficiency, but maintenance becomes labor-intensive requiring removal of valves and equipment
Solution Approach 1:
The patent positions valves in the axial dimension outside the interface cross-sectional area of the adsorbent bed, rather than within it. This spatial reconfiguration allows valves to be accessed from the axial direction without interfering with the radial interface area, enabling maintenance without removing valves while still minimizing dead volume impact on process efficiency.
Solution Approach 2:
The patent separates the valve assembly from the adsorbent bed interface area, creating independent accessible zones. Valves are positioned in a separate spatial zone (outside the interface cross-sectional area) that can be serviced independently, allowing maintenance personnel to access and service valves without needing to remove them from within the interface area, thus reducing maintenance labor while preserving process efficiency.
2Productivity
If rapid cycling is implemented to increase productivity, then output per unit time is improved, but pressure drop and flow distribution challenges increase
Solution Approach 1:
The patent optimizes local flow characteristics at the valve-adsorbent bed interface by positioning valves outside the interface cross-sectional area. This local configuration reduces flow disturbances and pressure drop at the critical interface zone, enabling rapid cycling to proceed with minimal pressure loss and improved flow distribution throughout the adsorbent bed.
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing streams through adsorbent bed units to remove contaminants, such as water, from the stream. As part of the process, the adsorbent bed unit may provide access to the adsorbent material within the adsorbent bed unit without having to remove one or more of valves, conduits and manifolds.