PSA Unit Adsorber Isolation and Reconfiguration
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Solution Overview
Problem
Pressure swing adsorption units with multiple adsorbers face inefficiencies when two adsorbers from different pairs become defective, requiring configuration changes that reduce unit efficiency and result in unused, operational adsorbers.
Innovation Solution
A method for managing a PSA unit with selective isolation and reconfiguration of adsorbers, allowing continued operation with isolated pairs and independent fluidic isolation of defective adsorbers using hermetic plugs and control device reconfiguration, ensuring uninterrupted production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pairs of adsorbers are isolated when defects occur, then unit reliability is improved, but device complexity increases due to configuration changes and unused operational adsorbers
Solution Approach 1:
The patent divides the adsorber system into independent pairs that can be isolated from each other. Each pair has its own isolation valves and can be independently controlled, allowing defective adsorbers to be segregated without affecting the entire unit. This segmentation enables selective isolation of problematic components while maintaining operation of healthy segments.
Solution Approach 2:
The patent implements dynamic reconfiguration capabilities where the control device can adaptively adjust the operational configuration based on defect detection. The system transitions between different operational modes (full operation, pair isolation, individual adsorber isolation) depending on the defect status, allowing the unit to maintain optimal performance under varying conditions rather than static configuration.
2Productivity
If adsorbers are isolated from pairs independently, then productivity is improved by utilizing more operational adsorbers, but device complexity increases due to additional isolation mechanisms
Solution Approach 1:
The isolation valves serve multiple functions: they can isolate entire pairs of adsorbers, isolate individual adsorbers within a pair, and be integrated with the existing cycle valve system. This multi-functionality allows the same hardware components to handle different isolation scenarios without requiring separate dedicated mechanisms for each case, thereby improving productivity without proportionally increasing complexity.
Solution Approach 2:
The control device automatically detects defects and triggers appropriate isolation actions without requiring manual intervention. The system self-manages the reconfiguration process by detecting defective adsorbers, activating the necessary isolation valves, and updating the operational configuration, thereby maintaining high productivity while minimizing the operational burden of the additional isolation capabilities.
3Adaptability or versatility
If control device reconfiguration is performed, then adaptability is improved for handling multiple defects, but ease of operation decreases due to manual configuration changes
Solution Approach 1:
The control device continuously monitors the status of adsorbers through sensors and detection systems. When defects are detected, the control device receives feedback signals and automatically initiates reconfiguration by activating the appropriate isolation valves. This closed-loop feedback system enables the unit to adapt to multiple defect scenarios automatically, maintaining high adaptability while eliminating the need for manual configuration changes and preserving ease of operation.
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
Optimizes gas production by enabling the unit to operate efficiently even with multiple adsorber failures, utilizing operational adsorbers and maintaining continuous production without stopping the unit.
Implementation Method 1
a gas phase adsorption process makes it possible to separate one or more molecules from a gas mixture containing them, by exploiting the difference in affinity of one or more adsorbents for the different constituent molecules of the mixture
Implementation Method 2
the adsorbent at the end of the production phase is regenerated by the desorption of impurities obtained by means of a reduction in their partial pressure
Implementation Method 3
This pressure reduction can be obtained by a reduction in the total pressure and/or by flushing with a gas free of or containing few impurities
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a method for managing a PSA unit (100) comprising: - at least N adsorbers (1-12) arranged in pairs (21-26), - each pair (21-26) being arranged for selective isolation, - a control device, - a plurality of interfaces for accessing instrumentation means for each adsorber (1-12), characterized in that when a first pair (21-26) is fluidically isolated, the first pair (21-26) comprising a first and a second adsorber, the isolation of a third adsorber comprises the steps of: - parameterizing the control device to control N-4 adsorbers, - fluidly isolating a second pair (21-26) comprising the third and a fourth adsorber, - isolating one of the first and second adsorbers and the third adsorber, - configuring the interfaces so as to interchange the instrumentation means of the other of the first and second adsorbers adsorbers and the instrumentation means of the fourth adsorber,- Establish fluidic communication between the first and second pairs, - Configure the control device to control N-2 adsorbers.