Adsorption Separation Unit for Light Noble Gas Recovery
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Solution Overview
Problem
Current methods for recovering light noble gases like helium, neon, and argon from gas mixtures face challenges in achieving efficient separation, especially when the concentration of these gases varies in feed streams, leading to suboptimal product gas concentration and recovery efficiency.
Innovation Solution
A process and apparatus involving an adsorption separation unit with multiple vessels containing adsorbent beds, combined with a purification unit, which includes a gas mixer and controller to regulate the flow of a secondary gas stream, ensuring efficient separation and product gas concentration by adjusting operating conditions based on real-time gas composition analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional separation methods (membrane, adsorption, or cryogenic units) are used, then separation capability is provided, but system complexity and operational difficulty increase when feed gas composition varies
Solution Approach 1:
The patent implements dynamic control of the separation process by continuously adjusting operating parameters (pressure, temperature, flow rates) based on real-time feed gas composition analysis. This allows a single integrated system to adapt to varying feed conditions without requiring multiple fixed-configuration separation units, thereby reducing overall system complexity while maintaining reliable separation capability.
Solution Approach 2:
The integrated separation system is designed to handle multiple feed gas compositions and produce consistent high-purity light noble gas output through a unified process configuration. The system combines membrane separation, adsorption, and purification units that work together to process various feed streams (natural gas, N2 rejection streams, CO2 liquefaction vents) without requiring separate dedicated units for each feed type.
2Ease of operation
If separation processes are designed for constant feed composition, then operational simplicity is maintained, but product concentration specifications cannot be met when feed varies
Solution Approach 1:
The system incorporates continuous online analysis of feed gas composition and uses this information as feedback to automatically adjust operating parameters. Composers meters and control systems monitor the light noble gas concentration in the feed stream and dynamically modify pressure, temperature, and flow rates to maintain consistent product concentration specifications despite feed variations.
Solution Approach 2:
The patent employs dynamic modification of process parameters (pressure, temperature, flow rates) in response to feed composition changes. By continuously adjusting these parameters, the system maintains product concentration within specifications without requiring complex manual intervention or multiple fixed-configuration units, thus preserving operational simplicity while achieving manufacturing precision.
3Adaptability or versatility
If multiple separate separation units are used to handle varying feed compositions, then adaptability improves, but device complexity and capital cost increase
Solution Approach 1:
The patent merges membrane separation units, adsorption units, and purification units into a single integrated system that processes various feed gas compositions. This combined configuration provides adaptability to different feed streams while reducing the total number of separate units required, thereby lowering capital cost and simplifying the overall device complexity compared to using multiple independent separation systems.
Solution Approach 2:
The integrated system incorporates dynamic control mechanisms that allow it to adapt to varying feed compositions through real-time parameter adjustments. This dynamic capability enables a single unified system to replace multiple fixed-configuration units, achieving the same versatility with reduced device complexity and lower capital investment.
4Ease of operation
If secondary gas streams are not utilized, then process simplicity is maintained, but light noble gas recovery efficiency decreases
Solution Approach 1:
The system recovers light noble gases from secondary gas streams that would otherwise be discarded. By integrating adsorption units and purification systems, the process captures light noble gases from purge streams, blowdown gases, and other byproduct streams, significantly improving overall recovery efficiency without substantially complicating the process through the addition of targeted recovery components.
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 the production of a light noble gas-rich product stream with improved concentration and recovery efficiency, even in feed streams with varying gas concentrations, by optimizing the adsorption and purification processes through dynamic control of gas flow and operating conditions.
Implementation Method 1
an adsorption separation unit (10), wherein the adsorption separation unit (10) comprises a plurality of vessels (100a, 100b, 100c, 100d, 100e) each containing a bed of adsorbent
Data Source
AI summary
Process and apparatus for producing helium, neon, or argon product gas using an adsorption separation unit having minimal dead end volumes. A purification unit receives a stream enriched in helium, neon, or argon, and a stream is recycled from the purification unit back to the adsorption separation unit in a controlled manner to maintain the concentration of the helium, neon, or argon in the feed to the separation unit within a targeted range.