Staggered Adsorbent Bed Layout for Lower-Energy Gas Separation
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Solution Overview
Problem
Existing gas separation processes using solid sorbents are energy-intensive, and there is a need for improved efficiency and productivity to reduce energy consumption while enhancing the separation of targeted molecules.
Innovation Solution
A staggered bed system is employed, comprising multiple layers of adsorbent beds configured in parallel and series configurations, with optimized volume and feed ratios, and optionally incorporating a mixing section to enhance the separation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If existing gas separation processes using solid sorbents are employed, then gas separation is achieved, but energy consumption is high
Solution Approach 1:
The adsorbent bed is divided into multiple zones with different sorbent materials optimized for different stages of the separation process. The first zone contains sorbent for initial capture, the second zone for intermediate processing, and the third zone for final polishing, allowing each segment to operate at optimal conditions and reduce overall energy requirements
Solution Approach 2:
The system implements periodic switching between adsorption and desorption cycles in different zones. While one zone is adsorbing target molecules, another zone is being regenerated, enabling continuous operation with reduced peak energy demands compared to single-bed systems
2Productivity
If single-layer adsorbent beds are used, then device complexity is low, but productivity is insufficient
Solution Approach 1:
The patent transitions from a single-layer horizontal bed configuration to a multi-layer vertical stacked configuration. This dimensional change allows multiple adsorption zones to be arranged vertically, increasing throughput capacity without proportionally increasing the horizontal footprint and managing complexity through modular vertical stacking
3Manufacturing precision
If adsorbent beds are configured in series only, then separation purity is improved, but energy consumption increases
Solution Approach 1:
The series configuration is segmented into distinct functional zones where the first zone performsç² separation, the second zone performs intermediate purification, and the third zone performs final polishing. This segmentation allows each zone to operate at optimized conditions, reducing the energy penalty of series configuration by avoiding redundant processing in all zones
Solution Approach 2:
Different sorbent materials and operating conditions are applied to different zones based on local requirements. The first zone uses sorbent optimized for high-capacity initial capture, the second zone uses sorbent for intermediate purification, and the third zone uses sorbent for final high-purity polishing, with each zone's properties locally optimized rather than uniform throughout
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 staggered bed system increases the productivity of gas separation by optimizing the configuration and ratios of adsorbent beds, leading to higher efficiency and reduced energy consumption.
Implementation Method 1
first adsorbent beds that are (i) include respective solid sorbents configured to adsorb target molecules from a fluid stream that is subject to the gas separation
Data Source
AI summary
A system for gas separation includes a first housing, a first reactor section that includes first adsorbent beds that are disposed within the first housing, a second housing, and a second reactor section that includes a second adsorbent bed disposed within the second housing. The first adsorbent beds (i) include respective solid sorbents configured to adsorb target molecules from a fluid stream that is subject to the gas separation and (ii) are arranged in parallel with respect to each other and relative to a flow direction of the fluid stream. The second adsorbent bed (i) includes a respective solid sorbent configured to adsorb the target molecules from the fluid stream and (ii) is staged in series relative to the first adsorbent beds and the flow direction. Each of the first adsorbent beds has a volume that is different from a volume of the second adsorbent bed.