Fixed Orifice Flow Regulation in Pressure Swing Adsorption
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Solution Overview
Problem
Traditional pressure swing adsorption (PSA) systems rely on variable flow resistance valves for regulating gas flow during equalization and purge steps, which increase system complexity and cost, require lengthy commissioning times, and are prone to improper adjustments affecting performance.
Innovation Solution
The PSA system employs a network of piping with fixed orifices to regulate gas flow between adsorber beds during equalization and purge steps, eliminating the need for adjustable valves and reducing post-commissioning tampering risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If variable flow resistance valves are used to regulate gas flow during equalization and purge steps, then flow rate control is achieved, but system complexity and cost increase
Solution Approach 1:
The patent extracts the flow control function from complex adjustable valves and implements it through simple fixed orifices with predetermined flow characteristics. This removes the unnecessary complexity of adjustable mechanisms while retaining the essential flow regulation capability needed for equalization and purge operations.
Solution Approach 2:
The patent replaces expensive, complex variable flow resistance valves with inexpensive fixed orifices that have predetermined flow characteristics. These simple orifices are easier to manufacture, install, and maintain, significantly reducing system cost and complexity while achieving the required flow control during PSA operations.
2Ease of operation
If variable flow resistance valves are used for flow regulation, then flow control is achieved, but commissioning time increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-setting the orifice dimensions during the design phase to achieve the desired flow characteristics. This eliminates the need for time-consuming field adjustments and tuning during commissioning, as the flow control is already optimized before the system is installed and operated.
Solution Approach 2:
By using simple fixed orifices instead of complex adjustable valves, the patent dramatically reduces commissioning time. The orifices require no tuning or calibration - they simply work as designed, transforming a multi-day commissioning process into a much quicker installation and startup procedure.
3Adaptability or versatility
If adjustable valves are used in PSA systems, then flow adjustment is possible, but post-commissioning tampering risks increase
Solution Approach 1:
The patent extracts the adjustability feature from the flow control mechanism and replaces it with fixed orifices having predetermined flow characteristics. This removes the vulnerability to tampering while maintaining sufficient flow control capability through proper orifice sizing, thereby improving reliability and performance consistency.
Solution Approach 2:
The patent replaces adjustable valves with simple fixed orifices that cannot be easily tampered with or misadjusted. These orifices provide reliable, consistent flow control throughout the system's operational life, eliminating the risk of performance degradation from improper field adjustments or unauthorized modifications.
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
This configuration simplifies system design, reduces commissioning time, enhances performance consistency, and prevents unfavorable adjustments, leading to more reproducible and efficient operation.
Implementation Method 1
Pressure swing adsorption (PSA) is a technology used to separate some gas fractions from a mixture of gases under pressure based on the fractions' molecular characteristics and affinity for an adsorbent material
Implementation Method 2
a first orifice configured to regulate a flow rate of gas between the first adsorber bed and the second adsorber bed during at least one of the pressure equalization step and the purge step
Data Source
AI summary
A pressure swing adsorption (PSA) system for purifying a feed gas is provided. The PSA system may have a first adsorber bed and a second adsorber bed, each having a feed port, a product port, and adsorbent material designed to adsorb one or more impurities from the feed gas to produce a product gas. The PSA system may also have a first valve configured to direct flows of the feed gas and the product gas through a network of piping. The PSA system may further have a first orifice configured to regulate a flow rate of gas between the first adsorber bed and the second adsorber bed during the pressure equalization step and a second orifice configured to regulate a flow rate of gas between the first adsorber bed and the second adsorber bed during the purge step.