Advances in Pressure Swing Adsorption for Gas Separation

ISRN Chemical Engineering ◽

10.5402/2012/982934 ◽

2012 ◽

Vol 2012 ◽

pp. 1-13 ◽

Cited By ~ 79

Author(s):

Carlos A. Grande

Keyword(s):

Gas Separation ◽

Continuous Improvement ◽

Pressure Swing Adsorption ◽

Process Engineering ◽

Air Separation ◽

Separation Technique ◽

Hydrogen Purification ◽

Pressure Swing

Pressure swing adsorption (PSA) is a well-established gas separation technique in air separation, gas drying, and hydrogen purification separation. Recently, PSA technology has been applied in other areas like methane purification from natural and biogas and has a tremendous potential to expand its utilization. It is known that the adsorbent material employed in a PSA process is extremely important in defining its properties, but it has also been demonstrated that process engineering can improve the performance of PSA units significantly. This paper aims to provide an overview of the fundamentals of PSA process while focusing specifically on different innovative engineering approaches that contributed to continuous improvement of PSA performance.

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Pressure Swing Adsorption Based Air Filtration/Purification Systems for NBC Collective Protection

Defence Life Science Journal ◽

10.14429/dlsj.1.10737 ◽

2016 ◽

Vol 1 (2) ◽

pp. 127 ◽

Cited By ~ 2

Author(s):

Beer Singh ◽

Virendra V Singh ◽

M Boopathi ◽

D Shah

Keyword(s):

Pressure Swing Adsorption ◽

Chemical Warfare Agents ◽

Air Separation ◽

Real Field ◽

Hydrogen Purification ◽

Respiratory Protection ◽

Air Filtration ◽

Warfare Agents ◽

Pressure Swing ◽

The Many

The respiratory protection against chemical warfare agents (CWA) has become a worldwide security concern in light of the many recent international threats utilising CWA. Till date the carbon filtration was adequate to protect the soldiers from the threats of CWA. With the advent of further advancements in the CWA a new threat is looming large that is known as the carbon breakers. pressure swing adsorption (PSA) is a well-established gas separation technique in air separation, gas drying, and hydrogen purification separation. Recently, PSA technology has been applied in the area of chem-bio defence by virtue of its unique advantages. This article reviews recent advances and developments in the field of PSA based purification, separation, and its use in defense sector. This emerging and advanced PSA technology can provide regenerative nuclear, biological and chemical (NBC) collective protection for ground vehicles, aircraft, ships and shelters. This PSA technology challenges threat scenario developed which includes nerve, blood and blister agents, as well as a “carbon breaker” agent, and proved that this technology will be a viable concept for future NBC collective protection systems. New technological breakthroughs and greater sophistication of PSA technologies will transform the collective protection based PSA technology in real field sense, addressing the escalating threat of CWA. We conclude this review with future prospects and challenges associated with PSA technology.

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Chemical Plant Utility – Nitrogen System Design

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.39047 ◽

2021 ◽

Vol 9 (11) ◽

pp. 1560-1567

Author(s):

Prasad J. Parulekar

Keyword(s):

High Purity ◽

Pressure Swing Adsorption ◽

Membrane Separation ◽

Hollow Fibre ◽

Air Separation ◽

Separation Technique ◽

Flow Diagram ◽

Efficient Technology ◽

Atmospheric Air ◽

Pressure Swing

Abstract: The study is been conducted to understand the different techniques to separate nitrogen from atmospheric air. Separation of nitrogen takes place by following techniques: Cryogenic air separation, Pressure swing adsorption and Membrane separation technique. Cryogenic air separation operates at a very low temperature, which uses the principle of rectification to separate nitrogen at a very high purity (99.999%). Pressure swing adsorption rely on the fact that higher the pressure, more the gas is adsorbed which results in high purity (95-99.99%) of nitrogen. Membrane separation technology is the process that uses hollow fibre membranes to separate the constituent gases in air, which gives the purity in the range of 93%-99.5%. After the comparative study, it is understood that membrane separation technique is the most efficient technology based on the cost, purity, flexibility in terms of adjusting the purity, maintenance, availability; it operates without heating and therefore uses less energy than conventional thermal separation processes. Different step designs of membrane separation techniques are discussed. A Process Flow Diagram and Piping Instrumentation Diagram is been added for single step membrane separation technique. Keywords: Atmospheric air, nitrogen, Cryogenic air separation, Pressure swing adsorption, Membrane separation technique.

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